Set FROM field on emails (#55)

Fixes #54

Reviewed-on: data.coop/membersystem#55
Co-authored-by: Benjamin Bach <benjamin@overtag.dk>
Co-committed-by: Benjamin Bach <benjamin@overtag.dk>

.dockerignore

@@ -3,5 +3,8 @@
 */.*
 
 !src/
+!requirements.txt
 !requirements/
 !entrypoint.sh
+!pyproject.toml
+!README.md

.drone.yml

@@ -7,7 +7,6 @@ steps:
   - name: docker
     image: plugins/docker
     environment:
-      DJANGO_ENV: production
       BUILD: "${DRONE_COMMIT_SHA}"
     settings:
       repo: docker.data.coop/membersystem
@@ -17,7 +16,6 @@ steps:
       password:
         from_secret: DOCKER_PASSWORD
       build_args_from_env:
-        - DJANGO_ENV
         - BUILD
       tags:
         - "${DRONE_BUILD_NUMBER}"

.env.example

@@ -0,0 +1,10 @@
+SECRET_KEY=something-very-random
+POSTGRES_HOST=postgres
+POSTGRES_PASSWORD=postgres
+POSTGRES_PORT=5432
+DATABASE_URL=postgres://postgres:postgres@postgres:5432/postgres
+# Use something along the the following if you are not using docker
+# DATABASE_URL=postgres://postgres:postgres@localhost:5432/datacoop_membersystem
+DEBUG=True
+STRIPE_API_KEY=sk_test_
+STRIPE_ENDPOINT_SECRET=whsec_

.gitignore

@@ -5,3 +5,10 @@ db.sqlite3
 .pytest_cache
 .idea/
 *.mo
+.env
+venv/
+.venv/
+
+
+# collectstatic
+src/static/

.pre-commit-config.yaml

@@ -1,9 +1,9 @@
 default_language_version:
-  python: python3.11
+  python: python3
 exclude: ^.*\b(migrations)\b.*$
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: v4.6.0
     hooks:
       - id: check-ast
       - id: check-merge-conflict
@@ -15,49 +15,23 @@ repos:
       - id: check-toml
       - id: end-of-file-fixer
       - id: trailing-whitespace
-  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: 'v0.0.209'
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: 'v0.5.2'
     hooks:
       - id: ruff
         args:
-          - --force-exclude
           - --fix
-  - repo: https://github.com/asottile/reorder_python_imports
-    rev: v3.9.0
-    hooks:
-      - id: reorder-python-imports
-        args:
-          - --py310-plus
-          - --application-directories=.:src
-        exclude: migrations/
+      - id: ruff-format
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.3.1
+    rev: v3.16.0
     hooks:
       - id: pyupgrade
         args:
           - --py311-plus
         exclude: migrations/
   - repo: https://github.com/adamchainz/django-upgrade
-    rev: 1.12.0
+    rev: 1.19.0
     hooks:
       - id: django-upgrade
         args:
-          - --target-version=4.1
-  - repo: https://github.com/asottile/yesqa
-    rev: v1.4.0
-    hooks:
-      -   id: yesqa
-  - repo: https://github.com/asottile/add-trailing-comma
-    rev: v2.4.0
-    hooks:
-      -   id: add-trailing-comma
-          args:
-            - --py36-plus
-  - repo: https://github.com/hadialqattan/pycln
-    rev: v2.1.2
-    hooks:
-      -   id: pycln
-  - repo: https://github.com/psf/black
-    rev: 22.12.0
-    hooks:
-      - id: black
+          - --target-version=5.0

Dockerfile

@@ -1,18 +1,33 @@
-FROM python:3.11-slim-bullseye
+FROM python:3.12-slim-bookworm
 
+# PYTHONFAULTHANDLER: Propagate tracebacks from all threads.
+# PYTHONUNBUFFERED: Write terminal output straight to docker (to not confuse Docker Compose).
+# PYTHONDONTWRITEBYTECODE: Dont write *pyc files at all, making it possible for a 100% read-only container.
+# PIP_NO_CACHE_DIR: Disable PIP cache, we don't need pip's cache after building the image.
+# PIP_DISABLE_PIP_VERSION_CHECK: Build the image with the available pip, do not check for updates (faster!)
+# PIP_DEFAULT_TIMEOUT: Allow for longer timeouts.
 ENV PYTHONFAULTHANDLER=1 \
   PYTHONUNBUFFERED=1 \
   PYTHONDONTWRITEBYTECODE=1 \
-  PYTHONHASHSEED=random \
-  PIP_NO_CACHE_DIR=off \
+  PIP_NO_CACHE_DIR=1 \
   PIP_DISABLE_PIP_VERSION_CHECK=on \
   PIP_DEFAULT_TIMEOUT=100
-ARG DJANGO_ENV
 ARG BUILD
-ENV BUILD ${BUILD}
+ENV BUILD=${BUILD}
+ARG REQUIREMENTS_FILE=requirements.txt
 
-RUN apt-get update \
-  && apt-get install -y \
+WORKDIR /app
+
+RUN groupadd -g 1000 www && useradd -u 1000 -ms /bin/bash -g www www
+
+# Only copy the requirements file first to leverage Docker cache
+RUN mkdir requirements/
+COPY $REQUIREMENTS_FILE $REQUIREMENTS_FILE
+
+RUN mkdir -p /app/src/static && \
+    chown www:www /app/src/static && \
+    apt-get update && \
+    apt-get install -y \
      binutils \
      libpq-dev \
      build-essential \
@@ -23,15 +38,13 @@ RUN apt-get update \
      libgdk-pixbuf2.0-0 \
      libffi-dev \
      shared-mime-info \
-     gettext
+     gettext && \
+    pip install --no-cache-dir -r $REQUIREMENTS_FILE
 
-WORKDIR /app
+# Copy the rest of the application
+COPY . .
 
-RUN groupadd -g 1000 www && useradd -u 1000 -ms /bin/bash -g www www
-COPY --chown=www:www . /app/
-RUN mkdir /app/src/static && chown www:www /app/src/static
-RUN pip install -r requirements/$([ "$DJANGO_ENV" = "production" ] && echo "base.txt" || echo "dev.txt") &&\
-    django-admin compilemessages
+RUN django-admin compilemessages
 
 ENTRYPOINT ["./entrypoint.sh"]
 

Makefile

@@ -1,27 +1,12 @@
-DOCKER_COMPOSE = COMPOSE_DOCKER_CLI_BUILD=1 DOCKER_BUILDKIT=1 venv/bin/docker-compose
+.PHONY: run makemigrations migrate createsuperuser shell manage_command build requirements
+DOCKER_COMPOSE = COMPOSE_DOCKER_CLI_BUILD=1 DOCKER_BUILDKIT=1 docker compose
 DOCKER_RUN = ${DOCKER_COMPOSE} run -u `id -u`
-DOCKER_BUILD = DOCKER_BUILDKIT=1 docker build
-DOCKER_CONTAINER_NAME = backend
 MANAGE_EXEC = python /app/src/manage.py
-MANAGE_COMMAND = ${DOCKER_RUN} ${DOCKER_CONTAINER_NAME} ${MANAGE_EXEC}
-
-init: setup_venv pre_commit_install migrate
+MANAGE_COMMAND = ${DOCKER_RUN} app ${MANAGE_EXEC}
 
 run:
 	${DOCKER_COMPOSE} up
 
-setup_venv:
-	rm -rf venv
-	python3.11 -m venv venv;
-	venv/bin/python -m pip install wheel setuptools;
-	venv/bin/python -m pip install docker-compose pre-commit boto3 pip-tools;
-
-pre_commit_install:
-	venv/bin/pre-commit install
-
-pre_commit_run_all:
-	venv/bin/pre-commit run --all-files
-
 makemigrations:
 	${MANAGE_COMMAND} makemigrations ${ARGS}
 
@@ -37,22 +22,8 @@ shell:
 manage_command:
 	${MANAGE_COMMAND} ${ARGS}
 
-add_dependency:
-	${DOCKER_RUN} ${DOCKER_CONTAINER_NAME} poetry add --lock ${DEPENDENCY}
+build:
+	${DOCKER_COMPOSE} build
 
-add_dev_dependency:
-	${DOCKER_RUN} ${DOCKER_CONTAINER_NAME} poetry add -D --lock ${DEPENDENCY}
-
-poetry_lock:
-	${DOCKER_RUN} ${DOCKER_CONTAINER_NAME} poetry lock --no-update
-
-poetry_command:
-	${DOCKER_RUN} ${DOCKER_CONTAINER_NAME} poetry ${COMMAND}
-
-build_dev_docker_image: compile_requirements
-	${DOCKER_COMPOSE} build ${DOCKER_CONTAINER_NAME}
-
-compile_requirements:
-	./venv/bin/pip-compile --output-file requirements/base.txt requirements/base.in
-	./venv/bin/pip-compile --output-file requirements/test.txt requirements/test.in
-	./venv/bin/pip-compile --output-file requirements/dev.txt requirements/dev.in
+requirements:
+	hatch run requirements

README.md

@@ -1,35 +1,105 @@
-# member.data.coop
+# data.coop member system
 
-## Development requirements
+## Development setup
+
+There are two ways to setup the development environment.
+
+- Using the Docker Compose setup provided in this repository.
+- Using [hatch](https://hatch.pypa.io/) in your host OS.
+
+### Using Docker Compose
+
+Working with the Docker Compose setup is made easy with the `Makefile` provided in the repository.
+
+#### Requirements
 
 - Docker
-- Docker compose
-- pre-commit (preferred for contributions)
+- docker compose plugin
 
-## Start local server
+#### Setup
 
-Given that the requirements above are installed, it should be as easy as:
+1. Setup .env file
 
-    $ make migrate
+    An example .env file is provided in the repository. You can copy it to .env file using the following command:
 
-This will setup the database. Next run:
+    ```bash
+    cp .env.example .env
+    ```
 
-    $ make run
+    The default values in the .env file are suitable for the docker-compose setup.
 
-This will build the docker image and start the member system on http://localhost:8000.
+2. Migrate
 
-You can create a superuser by running:
+    ```bash
+    make migrate
+    ```
 
-    $ make createsuperuser
+3. Run the development server
 
-Make migrations:
+    ```bash
+    make run
+    ```
 
-    $ make makemigrations
+#### Building and running other things
 
-Make messages:
+```bash
+# Build the containers
+make build
 
-    $ make makemessages
+# Create a superuser
+make createsuperuser
 
-Running tests:
+# Create Django migrations (after this, maybe you need to change file permissions in volume)
+make makemigrations
+```
 
-    $ make test
+### Using hatch
+
+#### Requirements
+
+- Python 3.12 or higher
+- [hatch](https://hatch.pypa.io/) (Recommended way to install is using `pipx install hatch`)
+- A running PostgreSQL server
+
+#### Setup
+
+1. Setup .env file
+
+    An example .env file is provided in the repository. You can copy it to .env file using the following command:
+
+    ```bash
+    cp .env.example .env
+    ```
+
+    Edit the .env file and set the values for the environment variables, especially the database variables.
+
+2. Run migrate
+
+    ```bash
+    hatch run dev:migrate
+    ```
+
+3. Run the development server
+
+   ```bash
+   hatch run dev:server
+   ```
+
+### Updating requirements
+
+We use hatch-pip-compile. That means we have a set of loosely defined `dependencies` in `pyproject.toml` and then we can keep the exactly pinned version in our `requirements.txt` (auto-generated).
+
+To generate `requirements.txt` and `requirements/requirements-dev.txt`, run the following command:
+
+```bash
+# Build requirements.txt etc
+make requirements
+
+# Build Docker image with new Python requirements
+make build
+```
+
+## Important notes
+
+* This project uses [django-zen-queries](https://github.com/dabapps/django-zen-queries), which will sometimes raise a `QueriesDisabledError` in your templates. You can find a difference of opinion about that, but you can find a difference of opinion about many things, right?
+* If a linting error annoys you, please feel free to strike back by adding a `noqa` to the line that has displeased the linter and move on with life.

docker-compose.yml

@@ -1,11 +1,10 @@
-version: '3.7'
-
+---
 services:
-
-  backend:
-    image: data_coop_membersystem:dev
+  app:
     build:
       context: .
+      args:
+        - REQUIREMENTS_FILE=requirements/requirements-dev.txt
     command: python /app/src/manage.py runserver 0.0.0.0:8000
     tty: true
     ports:
@@ -14,9 +13,8 @@ services:
       - ./:/app/
     depends_on:
       - postgres
-      - keycloak
     env_file:
-      - env
+      - .env
 
   postgres:
     image: postgres:13-alpine
@@ -25,27 +23,8 @@ services:
     ports:
       - 5432:5432
     env_file:
-      - env
-
-  keycloak_db:
-    image: postgres:13-alpine
-    volumes:
-      - postgres_data:/var/lib/postgresql/data/
-    env_file:
-      - env
-
-  keycloak:
-    image: "quay.io/keycloak/keycloak:20.0"
-    restart: "unless-stopped"
-    command:
-      - "start-dev"
-      - "--db=postgres"
-      - "--db-url=jdbc:postgresql://keycloak_db:5432/postgres"
-      - "--db-username=postgres"
-      - "--db-password=postgres"
-      - "--hostname=localhost"
-      - "--http-relative-path=/auth"
-
+      - .env
 
 volumes:
   postgres_data:
+...

env

@@ -1,7 +0,0 @@
-SECRET_KEY=something-very-random
-POSTGRES_HOST=postgres
-POSTGRES_PASSWORD=postgres
-POSTGRES_PORT=5432
-DATABASE_URL=postgres://postgres:postgres@postgres:5432/postgres
-DEBUG=True
-DJANGO_ENV=development

pyproject.toml

@@ -0,0 +1,166 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "membersystem"
+description = ''
+readme = "README.md"
+requires-python = ">=3.11"
+keywords = []
+authors = [
+    { name = "Víðir Valberg Guðmundsson", email = "valberg@orn.li" },
+]
+dependencies = [
+    "Django~=5.1",
+    "django-allauth~=0.63",
+    "django-money~=3.5",
+    "django-oauth-toolkit~=2.4",
+    "django-registries==0.0.3",
+    "django-view-decorator==0.0.4",
+    "django-oauth-toolkit~=2.4",
+    "django-ratelimit~=4.1",
+    "django-zen-queries~=2.1",
+    "django_stubs_ext~=5.0",
+    "environs[django]>=11,<12",
+    "psycopg[binary]~=3.2",
+    "stripe~=10.5",
+    "uvicorn~=0.30",
+    "whitenoise~=6.7",
+]
+version = "0.0.1"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src"]
+
+[tool.hatch.env]
+requires = ["hatch-pip-compile"]
+
+[tool.hatch.envs.default]
+type = "pip-compile"
+pip-compile-resolver = "uv"
+
+[tool.hatch.envs.dev]
+type = "pip-compile"
+pip-compile-resolver = "uv"
+dependencies = [
+    "coverage[toml]==7.3.0",
+    "pytest==7.2.2",
+    "pytest-cov",
+    "pytest-django==4.5.2",
+    "mypy==1.1.1",
+    "django-stubs==1.16.0",
+    "pip-tools==7.3.0",
+    "django-debug-toolbar==4.2.0",
+    "django-browser-reload==1.7.0",
+    "model-bakery==1.17.0",
+]
+
+[[tool.hatch.envs.tests.matrix]]
+python = ["3.12"]
+django = ["5.1"]
+
+[tool.hatch.envs.tests.overrides]
+matrix.django.dependencies = [
+    { value = "django~={matrix:django}" },
+]
+
+[tool.hatch.envs.default.scripts]
+cov = "pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=src --cov=tests --cov=append {args}"
+no-cov = "cov --no-cov {args}"
+typecheck = "mypy --config-file=pyproject.toml ."
+requirements = "hatch env run --env default -- python --version; hatch env run --env dev -- python --version"
+server = "./src/manage.py runserver 0.0.0.0:8000"
+migrate = "./src/manage.py migrate"
+makemigrations = "./src/manage.py makemigrations"
+createsuperuser = "./src/manage.py createsuperuser"
+shell = "./src/manage.py shell"
+# You need to install Stripe CLI from here to run this: https://github.com/stripe/stripe-cli/releases
+stripe_cli = "stripe listen --forward-to 0.0.0.0:8000/order/stripe/webhook/"
+
+[tool.pytest.ini_options]
+DJANGO_SETTINGS_MODULE="tests.settings"
+addopts = "--reuse-db"
+norecursedirs = "build dist docs .eggs/* *.egg-info htmlcov .git"
+python_files = "test*.py"
+testpaths = "tests"
+pythonpath = ". tests"
+
+[tool.coverage.run]
+branch = true
+parallel = true
+
+[tool.coverage.report]
+exclude_lines = [
+    "no cov",
+    "if __name__ == .__main__.:",
+    "if TYPE_CHECKING:",
+]
+
+[tool.mypy]
+mypy_path = "src/"
+exclude = [
+    "venv/",
+    "dist/",
+    "docs/",
+]
+namespace_packages = false
+show_error_codes = true
+strict = true
+warn_unreachable = true
+follow_imports = "normal"
+plugins = ["mypy_django_plugin.main"]
+
+[tool.django-stubs]
+django_settings_module = "project.settings"
+
+[[tool.mypy.overrides]]
+module = "tests.*"
+allow_untyped_defs = true
+
+[tool.ruff]
+target-version = "py312"
+extend-exclude = [
+    ".git",
+    "__pycache__",
+    "manage.py",
+    "asgi.py",
+    "wsgi.py",
+]
+line-length = 120
+
+[tool.ruff.lint]
+select = ["ALL"]
+ignore = [
+    "G004", # Logging statement uses f-string
+    "ANN101", # Missing type annotation for `self` in method
+    "ANN102", # Missing type annotation for `cls` in classmethod
+    "EM101", # Exception must not use a string literal, assign to variable first
+    "EM102", # Exception must not use a f-string literal, assign to variable first
+    "COM812", # missing-trailing-comma (https://docs.astral.sh/ruff/formatter/#conflicting-lint-rules)
+    "ISC001", # single-line-implicit-string-concatenation (https://docs.astral.sh/ruff/formatter/#conflicting-lint-rules)
+    "D100", # Missing docstring in public module
+    "D101", # Missing docstring in public class
+    "D102", # Missing docstring in public method
+    "D105", # Missing docstring in magic method
+    "D106", # Missing docstring in public nested class
+    "D107", # Missing docstring in `__init__`
+    "FIX", # TODO, FIXME, XXX
+    "TD", # TODO, FIXME, XXX
+    "ANN002", # Missing type annotation for `*args`
+    "ANN003", # Missing type annotation for `**kwargs`
+    "FBT001", # Misbehaves: Boolean-typed positional argument in function definition
+    "FBT002", # Misbehaves: Boolean-typed positional argument in function definition
+    "TRY003", # Avoid specifying long messages outside the exception class
+]
+
+[tool.ruff.lint.isort]
+force-single-line = true
+
+[tool.ruff.lint.per-file-ignores]
+"tests.py" = [
+    "S101",  # Use of assert
+    "SLF001",  # Private member access
+    "D100", # Docstrings
+    "D103", # Docstrings
+]

requirements.txt

@@ -0,0 +1,116 @@
+#
+# This file is autogenerated by hatch-pip-compile with Python 3.12
+#
+# - django-allauth~=0.63
+# - django-money~=3.5
+# - django-oauth-toolkit~=2.4
+# - django-ratelimit~=4.1
+# - django-registries==0.0.3
+# - django-stubs-ext~=5.0
+# - django-view-decorator==0.0.4
+# - django-zen-queries~=2.1
+# - django<5.2,>=5.1b1
+# - environs[django]<12,>=11
+# - psycopg[binary]~=3.2
+# - stripe~=10.5
+# - uvicorn~=0.30
+# - whitenoise~=6.7
+#
+
+asgiref==3.8.1
+    # via django
+babel==2.15.0
+    # via py-moneyed
+certifi==2024.7.4
+    # via requests
+cffi==1.16.0
+    # via cryptography
+charset-normalizer==3.3.2
+    # via requests
+click==8.1.7
+    # via uvicorn
+cryptography==43.0.0
+    # via jwcrypto
+dj-database-url==2.2.0
+    # via environs
+dj-email-url==1.0.6
+    # via environs
+django==5.1rc1
+    # via
+    #   hatch.envs.default
+    #   dj-database-url
+    #   django-allauth
+    #   django-money
+    #   django-oauth-toolkit
+    #   django-registries
+    #   django-stubs-ext
+    #   django-view-decorator
+    #   django-zen-queries
+django-allauth==0.63.6
+    # via hatch.envs.default
+django-cache-url==3.4.5
+    # via environs
+django-money==3.5.3
+    # via hatch.envs.default
+django-oauth-toolkit==2.4.0
+    # via hatch.envs.default
+django-ratelimit==4.1.0
+    # via hatch.envs.default
+django-registries==0.0.3
+    # via hatch.envs.default
+django-stubs-ext==5.0.4
+    # via hatch.envs.default
+django-view-decorator==0.0.4
+    # via hatch.envs.default
+django-zen-queries==2.1.0
+    # via hatch.envs.default
+environs==11.0.0
+    # via hatch.envs.default
+h11==0.14.0
+    # via uvicorn
+idna==3.7
+    # via requests
+jwcrypto==1.5.6
+    # via django-oauth-toolkit
+marshmallow==3.21.3
+    # via environs
+oauthlib==3.2.2
+    # via django-oauth-toolkit
+packaging==24.1
+    # via marshmallow
+psycopg==3.2.1
+    # via hatch.envs.default
+psycopg-binary==3.2.1
+    # via psycopg
+py-moneyed==3.0
+    # via django-money
+pycparser==2.22
+    # via cffi
+python-dotenv==1.0.1
+    # via environs
+pytz==2024.1
+    # via django-oauth-toolkit
+requests==2.32.3
+    # via
+    #   django-oauth-toolkit
+    #   stripe
+setuptools==72.1.0
+    # via django-money
+sqlparse==0.5.1
+    # via django
+stripe==10.6.0
+    # via hatch.envs.default
+typing-extensions==4.12.2
+    # via
+    #   dj-database-url
+    #   django-stubs-ext
+    #   jwcrypto
+    #   psycopg
+    #   py-moneyed
+    #   stripe
+urllib3==2.2.2
+    # via requests
+uvicorn==0.30.5
+    # via hatch.envs.default
+whitenoise==6.7.0
+    # via hatch.envs.default

requirements/base.in

@@ -1,8 +0,0 @@
-Django==4.1.5
-django-money==1.3
-django-allauth==0.46
-psycopg2-binary==2.9.5
-environs[django]==9.3
-uvicorn==0.13
-whitenoise==5.2
-django-zen-queries==2.1.0

requirements/base.txt

@@ -1,82 +0,0 @@
-#
-# This file is autogenerated by pip-compile with Python 3.10
-# by the following command:
-#
-#    pip-compile --output-file=requirements/base.txt requirements/base.in
-#
-asgiref==3.5.2
-    # via django
-certifi==2022.9.24
-    # via requests
-cffi==1.15.1
-    # via cryptography
-charset-normalizer==2.1.1
-    # via requests
-click==7.1.2
-    # via uvicorn
-cryptography==38.0.3
-    # via pyjwt
-defusedxml==0.7.1
-    # via python3-openid
-dj-database-url==1.0.0
-    # via environs
-dj-email-url==1.0.6
-    # via environs
-django==4.1.5
-    # via
-    #   -r requirements/base.in
-    #   dj-database-url
-    #   django-allauth
-    #   django-money
-    #   django-zen-queries
-django-allauth==0.46
-    # via -r requirements/base.in
-django-cache-url==3.4.2
-    # via environs
-django-money==1.3
-    # via -r requirements/base.in
-django-zen-queries==2.1.0
-    # via -r requirements/base.in
-environs[django]==9.3
-    # via -r requirements/base.in
-h11==0.14.0
-    # via uvicorn
-idna==3.4
-    # via requests
-marshmallow==3.19.0
-    # via environs
-oauthlib==3.2.2
-    # via requests-oauthlib
-packaging==21.3
-    # via marshmallow
-psycopg2-binary==2.9.5
-    # via -r requirements/base.in
-py-moneyed==0.8.0
-    # via django-money
-pycparser==2.21
-    # via cffi
-pyjwt[crypto]==2.6.0
-    # via django-allauth
-pyparsing==3.0.9
-    # via packaging
-python-dotenv==0.21.0
-    # via environs
-python3-openid==3.2.0
-    # via django-allauth
-requests==2.28.1
-    # via
-    #   django-allauth
-    #   requests-oauthlib
-requests-oauthlib==1.3.1
-    # via django-allauth
-sqlparse==0.4.3
-    # via django
-urllib3==1.26.12
-    # via requests
-uvicorn==0.13
-    # via -r requirements/base.in
-whitenoise==5.2
-    # via -r requirements/base.in
-
-# The following packages are considered to be unsafe in a requirements file:
-# setuptools

requirements/dev.in

@@ -1,8 +0,0 @@
--r test.txt
-
-django-browser-reload==1.6.0
-django-debug-toolbar==3.7.0
-django-extensions==3.2.1
-django-stubs==1.12.0
-ipython==8.6.0
-mypy==0.990

requirements/dev.txt

@@ -1,214 +0,0 @@
-#
-# This file is autogenerated by pip-compile with Python 3.10
-# by the following command:
-#
-#    pip-compile --output-file=requirements/dev.txt requirements/dev.in
-#
-asgiref==3.5.2
-    # via
-    #   -r requirements/test.txt
-    #   django
-asttokens==2.1.0
-    # via stack-data
-backcall==0.2.0
-    # via ipython
-certifi==2022.9.24
-    # via
-    #   -r requirements/test.txt
-    #   requests
-cffi==1.15.1
-    # via
-    #   -r requirements/test.txt
-    #   cryptography
-charset-normalizer==2.1.1
-    # via
-    #   -r requirements/test.txt
-    #   requests
-click==7.1.2
-    # via
-    #   -r requirements/test.txt
-    #   uvicorn
-coverage==6.5.0
-    # via -r requirements/test.txt
-cryptography==38.0.3
-    # via
-    #   -r requirements/test.txt
-    #   pyjwt
-decorator==5.1.1
-    # via ipython
-defusedxml==0.7.1
-    # via
-    #   -r requirements/test.txt
-    #   python3-openid
-dj-database-url==1.0.0
-    # via
-    #   -r requirements/test.txt
-    #   environs
-dj-email-url==1.0.6
-    # via
-    #   -r requirements/test.txt
-    #   environs
-django==4.1.5
-    # via
-    #   -r requirements/test.txt
-    #   dj-database-url
-    #   django-allauth
-    #   django-browser-reload
-    #   django-debug-toolbar
-    #   django-extensions
-    #   django-money
-    #   django-stubs
-    #   django-stubs-ext
-    #   django-zen-queries
-django-allauth==0.46
-    # via -r requirements/test.txt
-django-browser-reload==1.6.0
-    # via -r requirements/dev.in
-django-cache-url==3.4.2
-    # via
-    #   -r requirements/test.txt
-    #   environs
-django-debug-toolbar==3.7.0
-    # via -r requirements/dev.in
-django-extensions==3.2.1
-    # via -r requirements/dev.in
-django-money==1.3
-    # via -r requirements/test.txt
-django-stubs==1.12.0
-    # via -r requirements/dev.in
-django-stubs-ext==0.7.0
-    # via django-stubs
-django-zen-queries==2.1.0
-    # via -r requirements/test.txt
-environs[django]==9.3
-    # via -r requirements/test.txt
-executing==1.2.0
-    # via stack-data
-h11==0.14.0
-    # via
-    #   -r requirements/test.txt
-    #   uvicorn
-idna==3.4
-    # via
-    #   -r requirements/test.txt
-    #   requests
-ipython==8.6.0
-    # via -r requirements/dev.in
-jedi==0.18.1
-    # via ipython
-lxml==4.9.1
-    # via
-    #   -r requirements/test.txt
-    #   unittest-xml-reporting
-marshmallow==3.19.0
-    # via
-    #   -r requirements/test.txt
-    #   environs
-matplotlib-inline==0.1.6
-    # via ipython
-mypy==0.990
-    # via
-    #   -r requirements/dev.in
-    #   django-stubs
-mypy-extensions==0.4.3
-    # via mypy
-oauthlib==3.2.2
-    # via
-    #   -r requirements/test.txt
-    #   requests-oauthlib
-packaging==21.3
-    # via
-    #   -r requirements/test.txt
-    #   marshmallow
-parso==0.8.3
-    # via jedi
-pexpect==4.8.0
-    # via ipython
-pickleshare==0.7.5
-    # via ipython
-prompt-toolkit==3.0.32
-    # via ipython
-psycopg2-binary==2.9.5
-    # via -r requirements/test.txt
-ptyprocess==0.7.0
-    # via pexpect
-pure-eval==0.2.2
-    # via stack-data
-py-moneyed==0.8.0
-    # via
-    #   -r requirements/test.txt
-    #   django-money
-pycparser==2.21
-    # via
-    #   -r requirements/test.txt
-    #   cffi
-pygments==2.13.0
-    # via ipython
-pyjwt[crypto]==2.6.0
-    # via
-    #   -r requirements/test.txt
-    #   django-allauth
-pyparsing==3.0.9
-    # via
-    #   -r requirements/test.txt
-    #   packaging
-python-dotenv==0.21.0
-    # via
-    #   -r requirements/test.txt
-    #   environs
-python3-openid==3.2.0
-    # via
-    #   -r requirements/test.txt
-    #   django-allauth
-requests==2.28.1
-    # via
-    #   -r requirements/test.txt
-    #   django-allauth
-    #   requests-oauthlib
-requests-oauthlib==1.3.1
-    # via
-    #   -r requirements/test.txt
-    #   django-allauth
-six==1.16.0
-    # via asttokens
-sqlparse==0.4.3
-    # via
-    #   -r requirements/test.txt
-    #   django
-    #   django-debug-toolbar
-stack-data==0.6.1
-    # via ipython
-tblib==1.7.0
-    # via -r requirements/test.txt
-tomli==2.0.1
-    # via
-    #   django-stubs
-    #   mypy
-traitlets==5.5.0
-    # via
-    #   ipython
-    #   matplotlib-inline
-types-pytz==2022.6.0.1
-    # via django-stubs
-types-pyyaml==6.0.12.2
-    # via django-stubs
-typing-extensions==4.4.0
-    # via
-    #   django-stubs
-    #   django-stubs-ext
-    #   mypy
-unittest-xml-reporting==3.2.0
-    # via -r requirements/test.txt
-urllib3==1.26.12
-    # via
-    #   -r requirements/test.txt
-    #   requests
-uvicorn==0.13
-    # via -r requirements/test.txt
-wcwidth==0.2.5
-    # via prompt-toolkit
-whitenoise==5.2
-    # via -r requirements/test.txt
-
-# The following packages are considered to be unsafe in a requirements file:
-# setuptools

requirements/requirements-dev.txt

@@ -0,0 +1,192 @@
+#
+# This file is autogenerated by hatch-pip-compile with Python 3.12
+#
+# - coverage[toml]==7.3.0
+# - pytest==7.2.2
+# - pytest-cov
+# - pytest-django==4.5.2
+# - mypy==1.1.1
+# - django-stubs==1.16.0
+# - pip-tools==7.3.0
+# - django-debug-toolbar==4.2.0
+# - django-browser-reload==1.7.0
+# - model-bakery==1.17.0
+# - django-allauth~=0.63
+# - django-money~=3.5
+# - django-oauth-toolkit~=2.4
+# - django-ratelimit~=4.1
+# - django-registries==0.0.3
+# - django-stubs-ext~=5.0
+# - django-view-decorator==0.0.4
+# - django-zen-queries~=2.1
+# - django<5.2,>=5.1b1
+# - environs[django]<12,>=11
+# - psycopg[binary]~=3.2
+# - stripe~=10.5
+# - uvicorn~=0.30
+# - whitenoise~=6.7
+#
+
+asgiref==3.8.1
+    # via django
+attrs==23.2.0
+    # via pytest
+babel==2.15.0
+    # via py-moneyed
+build==1.2.1
+    # via pip-tools
+certifi==2024.7.4
+    # via requests
+cffi==1.16.0
+    # via cryptography
+charset-normalizer==3.3.2
+    # via requests
+click==8.1.7
+    # via
+    #   pip-tools
+    #   uvicorn
+coverage==7.3.0
+    # via
+    #   hatch.envs.dev
+    #   pytest-cov
+cryptography==43.0.0
+    # via jwcrypto
+dj-database-url==2.2.0
+    # via environs
+dj-email-url==1.0.6
+    # via environs
+django==5.1rc1
+    # via
+    #   hatch.envs.dev
+    #   dj-database-url
+    #   django-allauth
+    #   django-browser-reload
+    #   django-debug-toolbar
+    #   django-money
+    #   django-oauth-toolkit
+    #   django-registries
+    #   django-stubs
+    #   django-stubs-ext
+    #   django-view-decorator
+    #   django-zen-queries
+    #   model-bakery
+django-allauth==0.63.6
+    # via hatch.envs.dev
+django-browser-reload==1.7.0
+    # via hatch.envs.dev
+django-cache-url==3.4.5
+    # via environs
+django-debug-toolbar==4.2.0
+    # via hatch.envs.dev
+django-money==3.5.3
+    # via hatch.envs.dev
+django-oauth-toolkit==2.4.0
+    # via hatch.envs.dev
+django-ratelimit==4.1.0
+    # via hatch.envs.dev
+django-registries==0.0.3
+    # via hatch.envs.dev
+django-stubs==1.16.0
+    # via hatch.envs.dev
+django-stubs-ext==5.0.4
+    # via
+    #   hatch.envs.dev
+    #   django-stubs
+django-view-decorator==0.0.4
+    # via hatch.envs.dev
+django-zen-queries==2.1.0
+    # via hatch.envs.dev
+environs==11.0.0
+    # via hatch.envs.dev
+h11==0.14.0
+    # via uvicorn
+idna==3.7
+    # via requests
+iniconfig==2.0.0
+    # via pytest
+jwcrypto==1.5.6
+    # via django-oauth-toolkit
+marshmallow==3.21.3
+    # via environs
+model-bakery==1.17.0
+    # via hatch.envs.dev
+mypy==1.1.1
+    # via
+    #   hatch.envs.dev
+    #   django-stubs
+mypy-extensions==1.0.0
+    # via mypy
+oauthlib==3.2.2
+    # via django-oauth-toolkit
+packaging==24.1
+    # via
+    #   build
+    #   marshmallow
+    #   pytest
+pip==24.2
+    # via pip-tools
+pip-tools==7.3.0
+    # via hatch.envs.dev
+pluggy==1.5.0
+    # via pytest
+psycopg==3.2.1
+    # via hatch.envs.dev
+psycopg-binary==3.2.1
+    # via psycopg
+py-moneyed==3.0
+    # via django-money
+pycparser==2.22
+    # via cffi
+pyproject-hooks==1.1.0
+    # via build
+pytest==7.2.2
+    # via
+    #   hatch.envs.dev
+    #   pytest-cov
+    #   pytest-django
+pytest-cov==5.0.0
+    # via hatch.envs.dev
+pytest-django==4.5.2
+    # via hatch.envs.dev
+python-dotenv==1.0.1
+    # via environs
+pytz==2024.1
+    # via django-oauth-toolkit
+requests==2.32.3
+    # via
+    #   django-oauth-toolkit
+    #   stripe
+setuptools==72.1.0
+    # via
+    #   django-money
+    #   pip-tools
+sqlparse==0.5.1
+    # via
+    #   django
+    #   django-debug-toolbar
+stripe==10.6.0
+    # via hatch.envs.dev
+tomli==2.0.1
+    # via django-stubs
+types-pytz==2024.1.0.20240417
+    # via django-stubs
+types-pyyaml==6.0.12.20240724
+    # via django-stubs
+typing-extensions==4.12.2
+    # via
+    #   dj-database-url
+    #   django-stubs
+    #   django-stubs-ext
+    #   jwcrypto
+    #   mypy
+    #   psycopg
+    #   py-moneyed
+    #   stripe
+urllib3==2.2.2
+    # via requests
+uvicorn==0.30.5
+    # via hatch.envs.dev
+wheel==0.43.0
+    # via pip-tools
+whitenoise==6.7.0
+    # via hatch.envs.dev

requirements/test.in

@@ -1,5 +0,0 @@
--r base.txt
-
-coverage==6.5.0
-tblib==1.7.0
-unittest-xml-reporting==3.2.0

requirements/test.txt

@@ -1,139 +0,0 @@
-#
-# This file is autogenerated by pip-compile with Python 3.10
-# by the following command:
-#
-#    pip-compile --output-file=requirements/test.txt requirements/test.in
-#
-asgiref==3.5.2
-    # via
-    #   -r requirements/base.txt
-    #   django
-certifi==2022.9.24
-    # via
-    #   -r requirements/base.txt
-    #   requests
-cffi==1.15.1
-    # via
-    #   -r requirements/base.txt
-    #   cryptography
-charset-normalizer==2.1.1
-    # via
-    #   -r requirements/base.txt
-    #   requests
-click==7.1.2
-    # via
-    #   -r requirements/base.txt
-    #   uvicorn
-coverage==6.5.0
-    # via -r requirements/test.in
-cryptography==38.0.3
-    # via
-    #   -r requirements/base.txt
-    #   pyjwt
-defusedxml==0.7.1
-    # via
-    #   -r requirements/base.txt
-    #   python3-openid
-dj-database-url==1.0.0
-    # via
-    #   -r requirements/base.txt
-    #   environs
-dj-email-url==1.0.6
-    # via
-    #   -r requirements/base.txt
-    #   environs
-django==4.1.5
-    # via
-    #   -r requirements/base.txt
-    #   dj-database-url
-    #   django-allauth
-    #   django-money
-    #   django-zen-queries
-django-allauth==0.46
-    # via -r requirements/base.txt
-django-cache-url==3.4.2
-    # via
-    #   -r requirements/base.txt
-    #   environs
-django-money==1.3
-    # via -r requirements/base.txt
-django-zen-queries==2.1.0
-    # via -r requirements/base.txt
-environs[django]==9.3
-    # via -r requirements/base.txt
-h11==0.14.0
-    # via
-    #   -r requirements/base.txt
-    #   uvicorn
-idna==3.4
-    # via
-    #   -r requirements/base.txt
-    #   requests
-lxml==4.9.1
-    # via unittest-xml-reporting
-marshmallow==3.19.0
-    # via
-    #   -r requirements/base.txt
-    #   environs
-oauthlib==3.2.2
-    # via
-    #   -r requirements/base.txt
-    #   requests-oauthlib
-packaging==21.3
-    # via
-    #   -r requirements/base.txt
-    #   marshmallow
-psycopg2-binary==2.9.5
-    # via -r requirements/base.txt
-py-moneyed==0.8.0
-    # via
-    #   -r requirements/base.txt
-    #   django-money
-pycparser==2.21
-    # via
-    #   -r requirements/base.txt
-    #   cffi
-pyjwt[crypto]==2.6.0
-    # via
-    #   -r requirements/base.txt
-    #   django-allauth
-pyparsing==3.0.9
-    # via
-    #   -r requirements/base.txt
-    #   packaging
-python-dotenv==0.21.0
-    # via
-    #   -r requirements/base.txt
-    #   environs
-python3-openid==3.2.0
-    # via
-    #   -r requirements/base.txt
-    #   django-allauth
-requests==2.28.1
-    # via
-    #   -r requirements/base.txt
-    #   django-allauth
-    #   requests-oauthlib
-requests-oauthlib==1.3.1
-    # via
-    #   -r requirements/base.txt
-    #   django-allauth
-sqlparse==0.4.3
-    # via
-    #   -r requirements/base.txt
-    #   django
-tblib==1.7.0
-    # via -r requirements/test.in
-unittest-xml-reporting==3.2.0
-    # via -r requirements/test.in
-urllib3==1.26.12
-    # via
-    #   -r requirements/base.txt
-    #   requests
-uvicorn==0.13
-    # via -r requirements/base.txt
-whitenoise==5.2
-    # via -r requirements/base.txt
-
-# The following packages are considered to be unsafe in a requirements file:
-# setuptools

src/accounting/__init__.py

@@ -0,0 +1 @@
+"""Accounting app."""

src/accounting/admin.py

@@ -1,28 +1,94 @@
+"""Admin for the accounting app."""
+
+from django import forms
 from django.contrib import admin
+from django.contrib import messages
+from django.db.models import QuerySet
+from django.http import HttpRequest
 from django.utils.translation import gettext_lazy as _
+from membership.emails import OrderEmail
 
 from . import models
 
 
+class OrderProductInline(admin.TabularInline):
+    """Administer contents of an order inline."""
+
+    model = models.OrderProduct
+
+
+class OrderAdminForm(forms.ModelForm):
+    """Special Form for the OrderAdmin so we don't need to require the account field."""
+
+    account = forms.ModelChoiceField(
+        required=False,
+        queryset=models.Account.objects.all(),
+        help_text=_("Leave empty to auto-choose the member's own account or to create one."),
+    )
+
+    class Meta:
+        model = models.Order
+        exclude = ()  # noqa: DJ006
+
+    def clean(self):  # noqa: ANN201
+        cd = super().clean()
+        if not cd["account"] and cd["member"]:
+            try:
+                cd["account"] = models.Account.objects.get_or_create(owner=cd["member"])[0]
+            except models.Account.MultipleObjectsReturned:
+                cd["account"] = models.Account.objects.filter(owner=cd["member"]).first()
+        return cd
+
+
 @admin.register(models.Order)
 class OrderAdmin(admin.ModelAdmin):
+    """Admin for the Order model."""
 
-    list_display = ("who", "description", "created", "is_paid")
+    inlines = (OrderProductInline,)
+    form = OrderAdminForm
 
-    @admin.display(description=_("Customer"))
-    def who(self, instance):
-        return instance.user.get_full_name()
+    actions = ("send_order",)
+
+    list_display = ("member", "description", "created", "is_paid", "total_with_vat")
+    search_fields = ("member__email", "membership__membership_type__name", "description")
+    list_filter = ("is_paid", "membership__membership_type")
+
+    @admin.action(description="Send order link to selected unpaid orders")
+    def send_order(self, request: HttpRequest, queryset: QuerySet[models.Order]) -> None:
+        for order in queryset:
+            if order.is_paid:
+                messages.error(
+                    request,
+                    f"Order pk={order.id} is already marked paid, not sending email to: {order.member.email}",
+                )
+                continue
+            email = OrderEmail(order, request)
+            email.send()
+            messages.success(request, f"Sent an order for order pk={order.id} link to: {order.member.email}")
 
 
 @admin.register(models.Payment)
 class PaymentAdmin(admin.ModelAdmin):
+    """Admin for the Payment model."""
 
-    list_display = ("who", "description", "order_id", "created")
-
-    @admin.display(description=_("Customer"))
-    def who(self, instance):
-        return instance.order.user.get_full_name()
+    list_display = ("order__member", "description", "order_id", "created")
 
     @admin.display(description=_("Order ID"))
-    def order_id(self, instance):
+    def order_id(self, instance: models.Payment) -> int:
+        """Return the ID of the order."""
         return instance.order.id
+
+
+@admin.register(models.Product)
+class ProductAdmin(admin.ModelAdmin):
+    list_display = ("name", "price", "vat")
+
+
+class TransactionInline(admin.TabularInline):
+    model = models.Transaction
+
+
+@admin.register(models.Account)
+class AccountAdmin(admin.ModelAdmin):
+    list_display = ("owner", "balance")
+    inlines = (TransactionInline,)

src/accounting/apps.py

@@ -1,5 +1,13 @@
+"""Accounting app configuration."""
+
 from django.apps import AppConfig
 
 
 class AccountingConfig(AppConfig):
+    """Accounting app config."""
+
     name = "accounting"
+
+    def ready(self) -> None:
+        """Implicitly connect a signal handlers decorated with @receiver."""
+        from . import signals  # noqa: F401

src/accounting/migrations/0001_initial.py

@@ -7,7 +7,6 @@ from django.db import models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
@@ -99,9 +98,7 @@ class Migration(migrations.Migration):
                 ),
                 (
                     "vat",
-                    djmoney.models.fields.MoneyField(
-                        decimal_places=2, max_digits=16, verbose_name="VAT"
-                    ),
+                    djmoney.models.fields.MoneyField(decimal_places=2, max_digits=16, verbose_name="VAT"),
                 ),
                 ("is_paid", models.BooleanField(default=False, verbose_name="is paid")),
                 (

src/accounting/migrations/0002_alter_order_price_currency_alter_order_vat_currency_and_more.py

@@ -0,0 +1,41 @@
+# Generated by Django 5.0.1 on 2024-01-14 11:14
+
+import djmoney.models.fields
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("accounting", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="order",
+            name="price_currency",
+            field=djmoney.models.fields.CurrencyField(
+                choices=[("DKK", "DKK")], default=None, editable=False, max_length=3
+            ),
+        ),
+        migrations.AlterField(
+            model_name="order",
+            name="vat_currency",
+            field=djmoney.models.fields.CurrencyField(
+                choices=[("DKK", "DKK")], default=None, editable=False, max_length=3
+            ),
+        ),
+        migrations.AlterField(
+            model_name="payment",
+            name="amount_currency",
+            field=djmoney.models.fields.CurrencyField(
+                choices=[("DKK", "DKK")], default=None, editable=False, max_length=3
+            ),
+        ),
+        migrations.AlterField(
+            model_name="transaction",
+            name="amount_currency",
+            field=djmoney.models.fields.CurrencyField(
+                choices=[("DKK", "DKK")], default=None, editable=False, max_length=3
+            ),
+        ),
+    ]

src/accounting/migrations/0003_alter_payment_stripe_charge_id.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.0.6 on 2024-07-14 22:16
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounting', '0002_alter_order_price_currency_alter_order_vat_currency_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='payment',
+            name='stripe_charge_id',
+            field=models.CharField(blank=True, default='', max_length=255),
+            preserve_default=False,
+        ),
+    ]

src/accounting/migrations/0004_paymenttype_product_payment_external_transaction_id_and_more.py

@@ -0,0 +1,78 @@
+# Generated by Django 5.0.7 on 2024-07-21 14:12
+
+import django.db.models.deletion
+import djmoney.models.fields
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounting', '0003_alter_payment_stripe_charge_id'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='PaymentType',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('modified', models.DateTimeField(auto_now=True, verbose_name='modified')),
+                ('created', models.DateTimeField(auto_now_add=True, verbose_name='oprettet')),
+                ('name', models.CharField(max_length=1024, verbose_name='description')),
+                ('description', models.TextField(blank=True, max_length=2048)),
+                ('enabled', models.BooleanField(default=True)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.CreateModel(
+            name='Product',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('modified', models.DateTimeField(auto_now=True, verbose_name='modified')),
+                ('created', models.DateTimeField(auto_now_add=True, verbose_name='oprettet')),
+                ('name', models.CharField(max_length=512)),
+                ('price_currency', djmoney.models.fields.CurrencyField(choices=[('DKK', 'DKK')], default=None, editable=False, max_length=3)),
+                ('price', djmoney.models.fields.MoneyField(decimal_places=2, max_digits=16)),
+                ('vat_currency', djmoney.models.fields.CurrencyField(choices=[('DKK', 'DKK')], default=None, editable=False, max_length=3)),
+                ('vat', djmoney.models.fields.MoneyField(decimal_places=2, max_digits=16)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.AddField(
+            model_name='payment',
+            name='external_transaction_id',
+            field=models.CharField(blank=True, default='', max_length=255),
+        ),
+        migrations.AlterField(
+            model_name='payment',
+            name='stripe_charge_id',
+            field=models.CharField(blank=True, default='', max_length=255),
+        ),
+        migrations.AddField(
+            model_name='payment',
+            name='payment_type',
+            field=models.ForeignKey(default=1, on_delete=django.db.models.deletion.PROTECT, to='accounting.paymenttype'),
+            preserve_default=False,
+        ),
+        migrations.CreateModel(
+            name='OrderProduct',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('modified', models.DateTimeField(auto_now=True, verbose_name='modified')),
+                ('created', models.DateTimeField(auto_now_add=True, verbose_name='oprettet')),
+                ('price_currency', djmoney.models.fields.CurrencyField(choices=[('DKK', 'DKK')], default=None, editable=False, max_length=3)),
+                ('price', djmoney.models.fields.MoneyField(decimal_places=2, max_digits=16)),
+                ('vat_currency', djmoney.models.fields.CurrencyField(choices=[('DKK', 'DKK')], default=None, editable=False, max_length=3)),
+                ('vat', djmoney.models.fields.MoneyField(decimal_places=2, max_digits=16)),
+                ('order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='ordered_products', to='accounting.order')),
+                ('product', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='ordered_products', to='accounting.product')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]

src/accounting/migrations/0005_remove_order_price_remove_order_price_currency_and_more.py

@@ -0,0 +1,40 @@
+# Generated by Django 5.0.7 on 2024-07-21 14:53
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounting', '0004_paymenttype_product_payment_external_transaction_id_and_more'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='order',
+            name='price',
+        ),
+        migrations.RemoveField(
+            model_name='order',
+            name='price_currency',
+        ),
+        migrations.RemoveField(
+            model_name='order',
+            name='vat',
+        ),
+        migrations.RemoveField(
+            model_name='order',
+            name='vat_currency',
+        ),
+        migrations.AlterField(
+            model_name='orderproduct',
+            name='order',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='order_products', to='accounting.order'),
+        ),
+        migrations.AlterField(
+            model_name='orderproduct',
+            name='product',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='order_products', to='accounting.product'),
+        ),
+    ]

src/accounting/migrations/0006_alter_account_owner_alter_order_user.py

@@ -0,0 +1,25 @@
+# Generated by Django 5.0.7 on 2024-07-21 15:17
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounting', '0005_remove_order_price_remove_order_price_currency_and_more'),
+        ('membership', '0006_waitinglistentry_alter_membership_options'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='account',
+            name='owner',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='membership.member'),
+        ),
+        migrations.AlterField(
+            model_name='order',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='membership.member'),
+        ),
+    ]

src/accounting/migrations/0007_alter_orderproduct_options_rename_user_order_member_and_more.py

@@ -0,0 +1,42 @@
+# Generated by Django 5.1b1 on 2024-08-01 10:50
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounting', '0006_alter_account_owner_alter_order_user'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='orderproduct',
+            options={'verbose_name': 'ordered product', 'verbose_name_plural': 'ordered products'},
+        ),
+        migrations.RenameField(
+            model_name='order',
+            old_name='user',
+            new_name='member',
+        ),
+        migrations.RemoveField(
+            model_name='payment',
+            name='stripe_charge_id',
+        ),
+        migrations.AddField(
+            model_name='orderproduct',
+            name='quantity',
+            field=models.PositiveSmallIntegerField(default=1),
+        ),
+        migrations.AlterField(
+            model_name='orderproduct',
+            name='order',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='items', to='accounting.order'),
+        ),
+        migrations.AlterField(
+            model_name='orderproduct',
+            name='product',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='accounting.product'),
+        ),
+    ]

src/accounting/models.py

@@ -1,14 +1,20 @@
+"""Models for the accounting app."""
+
 from hashlib import md5
+from typing import Self
 
 from django.conf import settings
+from django.contrib import admin
 from django.db import models
 from django.db.models.aggregates import Sum
 from django.utils.translation import gettext as _
 from django.utils.translation import pgettext_lazy
 from djmoney.models.fields import MoneyField
+from djmoney.money import Money
 
 
 class CreatedModifiedAbstract(models.Model):
+    """Abstract model to track creation and modification of objects."""
 
     modified = models.DateTimeField(auto_now=True, verbose_name=_("modified"))
     created = models.DateTimeField(auto_now_add=True, verbose_name=_("created"))
@@ -18,20 +24,26 @@ class CreatedModifiedAbstract(models.Model):
 
 
 class Account(CreatedModifiedAbstract):
-    """
+    """An account for a user.
+
     This is the model where we can give access to several users, such that they
     can decide which account to use to pay for something.
     """
 
-    owner = models.ForeignKey("auth.User", on_delete=models.PROTECT)
+    owner = models.ForeignKey("membership.Member", on_delete=models.PROTECT)
+
+    def __str__(self) -> str:
+        return f"Account of {self.owner}"
 
     @property
-    def balance(self):
+    def balance(self) -> Money:
+        """Return the balance of the account."""
         return self.transactions.all().aggregate(Sum("amount")).get("amount", 0)
 
 
 class Transaction(CreatedModifiedAbstract):
-    """
+    """A transaction.
+
     Tracks in and outgoing events of an account. When an order is received, an
     amount is subtracted, when a payment is received, an amount is added.
     """
@@ -49,78 +61,149 @@ class Transaction(CreatedModifiedAbstract):
     )
     description = models.CharField(max_length=1024, verbose_name=_("description"))
 
+    def __str__(self) -> str:
+        return f"Transaction of {self.amount} for {self.account}"
+
 
 class Order(CreatedModifiedAbstract):
-    """
-    Scoped out: Contents of invoices will have to be tracked either here or in
-    a separate Invoice model. This is undecided because we are not generating
-    invoices at the moment.
+    """An order.
+
+    We assemble the order from a number of products. Once an order is paid, the contents should be
+    considered locked.
     """
 
-    user = models.ForeignKey("auth.User", on_delete=models.PROTECT)
+    member = models.ForeignKey("membership.Member", on_delete=models.PROTECT)
     account = models.ForeignKey(Account, on_delete=models.PROTECT)
 
     description = models.CharField(max_length=1024, verbose_name=_("description"))
 
-    price = MoneyField(
-        verbose_name=_("price (excl. VAT)"),
-        max_digits=16,
-        decimal_places=2,
-    )
-    vat = MoneyField(verbose_name=_("VAT"), max_digits=16, decimal_places=2)
-
     is_paid = models.BooleanField(default=False, verbose_name=_("is paid"))
 
-    @property
-    def total(self):
-        return self.price + self.vat
+    class Meta:
+        verbose_name = pgettext_lazy("accounting", "Order")
+        verbose_name_plural = pgettext_lazy("accounting", "Orders")
+
+    def __str__(self) -> str:
+        return f"Order ID {self.display_id}"
 
     @property
-    def display_id(self):
+    def total(self) -> Money:
+        """Return the total price of the order (excl VAT)."""
+        return sum(item.price * item.quantity for item in self.items.all())
+
+    @property
+    def total_vat(self) -> Money:
+        """Return the total VAT of the order."""
+        return sum(item.vat * item.quantity for item in self.items.all())
+
+    @property
+    @admin.display(
+        ordering=None,
+        description="Total (incl. VAT)",
+        boolean=False,
+    )
+    def total_with_vat(self) -> Money:
+        """Return the TOTAL amount WITH VAT."""
+        return self.total + self.total_vat
+
+    @property
+    def display_id(self) -> str:
+        """Return an id for the order."""
         return str(self.id).zfill(6)
 
     @property
-    def payment_token(self):
+    def payment_token(self) -> str:
+        """Return a token for the payment."""
         pk = str(self.pk).encode("utf-8")
-        x = md5()
+        x = md5()  # noqa: S324
         x.update(pk)
         extra_hash = (settings.SECRET_KEY + "blah").encode("utf-8")
         x.update(extra_hash)
         return x.hexdigest()
 
-    class Meta:
-        verbose_name = pgettext_lazy("accounting term", "Order")
-        verbose_name_plural = pgettext_lazy("accounting term", "Orders")
 
-    def __str__(self):
-        return f"Order ID {self.display_id}"
+class Product(CreatedModifiedAbstract):
+    """A generic product, for instance a membership or a service fee."""
+
+    name = models.CharField(max_length=512)
+    price = MoneyField(max_digits=16, decimal_places=2)
+    vat = MoneyField(max_digits=16, decimal_places=2)
+
+    def __str__(self) -> str:
+        return self.name
+
+
+class OrderProduct(CreatedModifiedAbstract):
+    """When a product is ordered, we store the product on the order.
+
+    This includes pricing information.
+    """
+
+    order = models.ForeignKey(Order, on_delete=models.CASCADE, related_name="items")
+    product = models.ForeignKey(Product, on_delete=models.PROTECT)
+    price = MoneyField(max_digits=16, decimal_places=2)
+    vat = MoneyField(max_digits=16, decimal_places=2)
+    quantity = models.PositiveSmallIntegerField(default=1)
+
+    class Meta:
+        verbose_name = _("ordered product")
+        verbose_name_plural = _("ordered products")
+
+    def __str__(self) -> str:
+        return f"{self.product.name}"
+
+    @property
+    def total_with_vat(self) -> Money:
+        """Total price of this item."""
+        return (self.price + self.vat) * self.quantity
 
 
 class Payment(CreatedModifiedAbstract):
+    """A payment is a transaction that is made to pay for an order."""
 
     amount = MoneyField(max_digits=16, decimal_places=2)
     order = models.ForeignKey(Order, on_delete=models.PROTECT)
 
     description = models.CharField(max_length=1024, verbose_name=_("description"))
 
-    stripe_charge_id = models.CharField(max_length=255, null=True, blank=True)
-
-    @property
-    def display_id(self):
-        return str(self.id).zfill(6)
-
-    @classmethod
-    def from_order(cls, order):
-        return cls.objects.create(
-            order=order,
-            user=order.user,
-            amount=order.total,
-            description=order.description,
-        )
-
-    def __str__(self):
-        return f"Payment ID {self.display_id}"
+    payment_type = models.ForeignKey("PaymentType", on_delete=models.PROTECT)
+    external_transaction_id = models.CharField(max_length=255, default="", blank=True)
 
     class Meta:
         verbose_name = _("payment")
         verbose_name_plural = _("payments")
+
+    def __str__(self) -> str:
+        return f"Payment ID {self.display_id}"
+
+    @property
+    def display_id(self) -> str:
+        """Return an id for the payment."""
+        return str(self.id).zfill(6)
+
+    @classmethod
+    def from_order(cls, order: Order, payment_type: "PaymentType") -> Self:
+        """Create a payment from an order."""
+        return cls.objects.create(
+            order=order,
+            user=order.user,
+            amount=order.total + order.total_vat,
+            description=order.description,
+            payment_type=payment_type,
+        )
+
+
+class PaymentType(CreatedModifiedAbstract):
+    """Types of payments available in the system.
+
+    - bank transfer
+    - card payment (specific provider)
+    """
+
+    name = models.CharField(max_length=1024, verbose_name=_("description"))
+    description = models.TextField(max_length=2048, blank=True)
+
+    enabled = models.BooleanField(default=True)
+
+    def __str__(self) -> str:
+        return f"{self.name}"

src/accounting/signals.py

@@ -0,0 +1,36 @@
+"""Loaded with the AppConfig.ready() method."""
+
+from django.core.mail import mail_admins
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+from django.utils import timezone
+from membership.models import Membership
+
+from . import models
+
+
+# method for updating
+@receiver(post_save, sender=models.Payment)
+def check_total_amount(sender: models.Payment, instance: models.Payment, **kwargs: dict) -> None:  # noqa: ARG001
+    """Check that we receive Payments with the correct amount."""
+    if instance.amount != instance.order.total_with_vat:
+        mail_admins(
+            "Payment received: wrong amount",
+            f"Please check payment ID {instance.pk}",
+        )
+
+
+@receiver(post_save, sender=models.Payment)
+def mark_order_paid(sender: models.Payment, instance: models.Payment, **kwargs: dict) -> None:  # noqa: ARG001
+    """Mark an order as paid when payment is received."""
+    instance.order.is_paid = True
+    instance.order.save()
+
+
+@receiver(post_save, sender=models.Order)
+def activate_membership(sender: models.Order, instance: models.Order, **kwargs: dict) -> None:  # noqa: ARG001
+    """Mark a membership as activated when its order is marked as paid."""
+    if instance.is_paid:
+        Membership.objects.filter(order=instance, activated=False, activated_on=None).update(
+            activated=True, activated_on=timezone.now()
+        )

src/accounting/templates/accounting/order/cancel.html

@@ -0,0 +1,18 @@
+{% extends "base.html" %}
+{% load i18n %}
+
+{% block head_title %}
+    {% trans "Payment cancelled" %}
+{% endblock %}
+
+{% block content %}
+
+    <div class="content-view">
+        <h2>{% trans "Payment canceled" %}</h2>
+
+        <p>
+            <a href="{% order:detail order_id=order.id %}">{% trans "Return to order page" %}</a>
+        </p>
+
+    </div>
+{% endblock %}

src/accounting/templates/accounting/order/detail.html

@@ -0,0 +1,49 @@
+{% extends "base.html" %}
+{% load i18n %}
+
+{% block head_title %}
+    {% trans "Order" context "accounting" %}
+{% endblock %}
+
+{% block content %}
+
+    <div class="content-view">
+        <h2>Order: {{ order.id }}</h2>
+
+        <p>
+          {% trans "Ordered" context "accounting" %}: {{ order.created }}<br>
+          {% trans "Status" context "accounting" %}: {{ order.is_paid|yesno:_("paid,unpaid") }}
+        </p>
+
+        <table class="table">
+            <thead>
+            <tr>
+                <th>{% trans "Item" context "accounting" %}</th>
+                <th>{% trans "Quantity" %}</th>
+                <th>{% trans "Price" %}</th>
+                <th>{% trans "VAT" %}</th>
+                <th>{% trans "Total" %}</th>
+            </tr>
+            </thead>
+            <tbody>
+            {% for item in order.items.all %}
+                <tr>
+                    <td>{{ item.product.name }}</td>
+                    <td>{{ item.quantity }}</td>
+                    <td>{{ item.price }}</td>
+                    <td>{{ item.vat }}</td>
+                    <td>{{ item.total_with_vat }}</td>
+                </tr>
+            {% endfor %}
+            </tbody>
+        </table>
+
+        <h2>{% trans "Total price" %}: {{ order.total_with_vat }}</h2>
+
+        {% if not order.is_paid %}
+        <p>
+          <a href="{% url "order:pay" order_id=order.pk %}" class="button">{% trans "Pay now" %}</a>
+        </p>
+        {% endif %}
+    </div>
+{% endblock %}

src/accounting/templates/accounting/order/success.html

@@ -0,0 +1,20 @@
+{% extends "base.html" %}
+{% load i18n %}
+
+{% block head_title %}
+    {% trans "Payment received" %}
+{% endblock %}
+
+{% block content %}
+
+    <div class="content-view">
+        <h2>{% trans "Payment received" %}</h2>
+
+        <p>
+        {% blocktrans trimmed with order.id as order_id %}
+            Thanks fellow member! We received your payment for Order {{ order_id }}. We're adding more features to the site, so expect to see a confirmation email (receipt) for the order soon.
+        {% endblocktrans %}
+        </p>
+
+    </div>
+{% endblock %}

src/accounting/tests.py

@@ -8,8 +8,8 @@ from . import models
 # do stuff
 
 
-@pytest.mark.django_db
-def test_balance():
+@pytest.mark.django_db()
+def test_balance() -> None:
     user = User.objects.create_user("test", "lala@adas.com", "1234")
     account = models.Account.objects.create(owner=user)
     assert account.balance == 0

src/accounting/views.py

@@ -0,0 +1,177 @@
+"""Views for the membership app."""
+
+import stripe
+from django.conf import settings
+from django.contrib.sites.models import Site
+from django.core.mail import mail_admins
+from django.db import transaction
+from django.http import HttpRequest
+from django.http import HttpResponse
+from django.shortcuts import get_object_or_404
+from django.shortcuts import redirect
+from django.shortcuts import render
+from django.urls import reverse
+from django.views.decorators.csrf import csrf_exempt
+from django_view_decorator import namespaced_decorator_factory
+from djmoney.money import Money
+
+from . import models
+
+order_view = namespaced_decorator_factory(namespace="order", base_path="order")
+
+stripe.api_key = settings.STRIPE_API_KEY
+
+
+@order_view(
+    paths="<int:order_id>/",
+    name="detail",
+    login_required=True,
+)
+def order_detail(request: HttpRequest, order_id: int) -> HttpResponse:
+    """View to show the details of a member."""
+    user = request.user  # People just need to login to pay something, not necessarily be a member
+    order = models.Order.objects.get(pk=order_id, member=user)
+
+    context = {
+        "order": order,
+    }
+
+    return render(
+        request=request,
+        template_name="accounting/order/detail.html",
+        context=context,
+    )
+
+
+@order_view(
+    paths="<int:order_id>/pay/",
+    name="pay",
+    login_required=True,
+)
+def order_pay(request: HttpRequest, order_id: int) -> HttpResponse:
+    """Create a Stripe session and redirects to Stripe Checkout."""
+    user = request.user  # People just need to login to pay something, not necessarily be a member
+    order = models.Order.objects.get(pk=order_id, member=user)
+    current_site = Site.objects.get_current(request)
+    base_domain = f"https://{current_site.domain}"
+    if settings.DEBUG:
+        f"http://{current_site.domain}"
+
+    try:
+        line_items = []
+        for item in order.items.all():
+            line_items.append(  # noqa: PERF401
+                {
+                    "price_data": {
+                        "currency": item.total_with_vat.currency,
+                        "unit_amount": int((item.price + item.vat).amount * 100),
+                        "product_data": {
+                            "name": item.product.name,
+                        },
+                    },
+                    "quantity": item.quantity,
+                }
+            )
+        checkout_session = stripe.checkout.Session.create(
+            line_items=line_items,
+            metadata={"order_id": order.id},
+            mode="payment",
+            success_url=base_domain + reverse("order:success", kwargs={"order_id": order.id}),
+            cancel_url=base_domain + "/cancel",
+        )
+    except Exception as e:
+        mail_admins("Error in checkout", str(e))
+        raise
+
+    # TODO: Redirect with status=303
+    return redirect(checkout_session.url)
+
+
+@transaction.atomic
+@order_view(
+    paths="<int:order_id>/pay/success/",
+    name="success",
+    login_required=True,
+)
+def success(request: HttpRequest, order_id: int) -> HttpResponse:
+    """Create a Stripe session and redirects to Stripe Checkout.
+
+    From Stripe docs: When you have a webhook endpoint set up to listen for checkout.session.completed events and
+    you set a success_url, Checkout waits for your server to respond to the webhook event delivery before redirecting
+    your customer. If you use this approach, make sure your server responds to checkout.session.completed events as
+    quickly as possible.
+    """
+    user = request.user  # People just need to login to pay something, not necessarily be a member
+    order = get_object_or_404(models.Order, pk=order_id, member=user)
+
+    context = {
+        "order": order,
+    }
+
+    return render(
+        request=request,
+        template_name="accounting/order/success.html",
+        context=context,
+    )
+
+
+@transaction.atomic
+@order_view(
+    paths="<int:order_id>/pay/cancel/",
+    name="cancel",
+    login_required=True,
+)
+def cancel(request: HttpRequest, order_id: int) -> HttpResponse:
+    """Page to display when a payment is canceled."""
+    user = request.user  # People just need to login to pay something, not necessarily be a member
+    order = models.Order.objects.get(pk=order_id, member=user)
+
+    context = {
+        "order": order,
+    }
+
+    return render(
+        request=request,
+        template_name="accounting/order/cancel.html",
+        context=context,
+    )
+
+
+@transaction.atomic
+@order_view(
+    paths="stripe/webhook/",
+    name="webhook",
+)
+@csrf_exempt
+def stripe_webhook(request: HttpRequest) -> HttpResponse:
+    """Handle Stripe webhook.
+
+    https://docs.stripe.com/metadata/use-cases
+    """
+    payload = request.body
+    sig_header = request.headers["stripe-signature"]
+    event = None
+
+    try:
+        event = stripe.Webhook.construct_event(payload, sig_header, settings.STRIPE_ENDPOINT_SECRET)
+    except ValueError:
+        # Invalid payload
+        return HttpResponse(status=400)
+    except stripe.error.SignatureVerificationError:
+        # Invalid signature
+        return HttpResponse(status=400)
+
+    if event["type"] == "checkout.session.completed" or event["type"] == "checkout.session.async_payment_succeeded":
+        # Order is marked paid via signals, Membership is activated via signals.
+        order_id = event["data"]["object"]["metadata"]["order_id"]
+        order = get_object_or_404(models.Order, pk=order_id)
+        if not models.Payment.objects.filter(order=order).exists():
+            models.Payment.objects.create(
+                order=order,
+                amount=Money(event["data"]["object"]["amount_total"] / 100.0, event["data"]["object"]["currency"]),
+                description="Paid via Stripe",
+                payment_type=models.PaymentType.objects.get_or_create(name="Stripe")[0],
+                external_transaction_id=event["id"],
+            )
+
+    return HttpResponse(status=200)

src/membership/__init__.py

@@ -1,8 +1,5 @@
-"""
-Membership application
-======================
+"""Membership application.
 
 This application's domain relate to organizational structures and
 implementation of statutes, policies etc.
-
 """

src/membership/admin.py

@@ -1,20 +1,168 @@
-from django.contrib import admin
+"""Admin configuration for membership app."""
 
+from collections.abc import Callable
+
+from accounting.models import Account
+from accounting.models import Order
+from accounting.models import OrderProduct
+from django.contrib import admin
+from django.contrib import messages
+from django.contrib.admin import ModelAdmin
+from django.contrib.auth.admin import UserAdmin
+from django.contrib.auth.models import User
+from django.db import transaction
+from django.db.models import QuerySet
+from django.http import HttpRequest
+from django.http import HttpResponse
+from django.utils.text import slugify
+
+from .emails import InviteEmail
+from .models import Member
 from .models import Membership
 from .models import MembershipType
 from .models import SubscriptionPeriod
+from .models import WaitingListEntry
+
+# Do not use existing user admin
+admin.site.unregister(User)
 
 
 @admin.register(Membership)
 class MembershipAdmin(admin.ModelAdmin):
-    pass
+    """Admin for Membership model."""
+
+    list_display = ("user", "period", "membership_type", "activated", "revoked")
+    list_filter = ("period", "membership_type", "activated", "revoked")
+    search_fields = ("membership_type__name", "user__email", "user__first_name", "user__last_name")
 
 
 @admin.register(MembershipType)
 class MembershipTypeAdmin(admin.ModelAdmin):
-    pass
+    """Admin for MembershipType model."""
 
 
 @admin.register(SubscriptionPeriod)
 class SubscriptionPeriodAdmin(admin.ModelAdmin):
-    pass
+    """Admin for SubscriptionPeriod model."""
+
+
+class MembershipInlineAdmin(admin.TabularInline):
+    """Inline admin."""
+
+    model = Membership
+
+
+def decorate_ensure_membership_type_exists(membership_type: MembershipType, label: str) -> Callable:
+    """Generate an admin action for given membership type and label."""
+
+    @admin.action(description=label)
+    def admin_action(modeladmin: ModelAdmin, request: HttpRequest, queryset: QuerySet) -> HttpResponse:  # noqa: ARG001
+        return ensure_membership_type_exists(request, queryset, membership_type)
+
+    return admin_action
+
+
+@transaction.atomic
+def ensure_membership_type_exists(
+    request: HttpRequest,
+    queryset: QuerySet[Member],
+    membership_type: MembershipType,
+) -> HttpResponse:
+    """Inner function that ensures that a membership exists for a given queryset of Member objects."""
+    for member in queryset:
+        if member.memberships.filter(membership_type=membership_type).current():
+            messages.info(request, f"{member} already has a membership {membership_type}")
+        else:
+            # Get the default account of the member. We don't really know what to do if a person owns multiple accounts.
+            account, __ = Account.objects.get_or_create(owner=member)
+            # Create an Order for the products in the membership
+            order = Order.objects.create(member=member, account=account, description=membership_type.name)
+            # Add stuff to the order
+            for product in membership_type.products.all():
+                OrderProduct.objects.create(order=order, product=product, price=product.price, vat=product.vat)
+            # Create the Membership
+            Membership.objects.create(
+                membership_type=membership_type,
+                user=member,
+                period=SubscriptionPeriod.objects.current(),
+                order=order,
+            )
+
+            # Associate the order with that membership
+            messages.success(request, f"{member} has ordered a '{membership_type}' (unpaid)")
+
+
+@admin.register(Member)
+class MemberAdmin(UserAdmin):
+    """Member admin is actually an admin for User objects."""
+
+    inlines = (MembershipInlineAdmin,)
+    actions: list[str | Callable] = ["send_invite"]  # noqa: RUF012
+    list_display = ("email", "current_membership", "username", "is_staff", "is_active", "date_joined")
+
+    @admin.display(description="membership")
+    def current_membership(self, instance: Member) -> Membership | None:
+        return instance.memberships.current()
+
+    def get_actions(self, request: HttpRequest) -> dict:
+        """Populate actions with dynamic data (MembershipType)."""
+        current_period = SubscriptionPeriod.objects.current()
+
+        super_dict = super().get_actions(request)
+
+        if current_period:
+            for i, mtype in enumerate(MembershipType.objects.filter(active=True)):
+                action_label = f"Ensure membership {mtype.name}, {current_period.period}, {mtype.total_including_vat}"
+                action_func = decorate_ensure_membership_type_exists(mtype, action_label)
+                # Django ModelAdmin uses the non-unique __name__ property, so we need to suffix it to make it unique
+                action_func.__name__ += f"_{i}"
+                self.actions.append(action_func)
+
+        return super_dict
+
+    @admin.action(description="Send invite email to selected inactive accounts")
+    def send_invite(self, request: HttpRequest, queryset: QuerySet[Member]) -> None:
+        for member in queryset:
+            if member.is_active:
+                messages.error(
+                    request,
+                    f"Computer says no! This member will not receive an invite because the account is marked "
+                    f"as active: {member.email}. That means the member has probably created a password and a username "
+                    f"already, please tell them to use the password reminder function.",
+                )
+                continue
+            if not member.memberships.current():
+                messages.error(
+                    request,
+                    f"Computer says no! This member will not receive an invite because it has no current "
+                    f"membership: {member.email}. You need to create a current membership before sending the invite.",
+                )
+                continue
+            membership = member.memberships.current()
+            email = InviteEmail(membership, request)
+            email.send()
+            messages.success(request, f"Sent an invitation to: {member.email}")
+
+
+@admin.register(WaitingListEntry)
+class WaitingListEntryAdmin(admin.ModelAdmin):
+    """Admin for WaitingList model."""
+
+    list_display = ("email", "member")
+    actions = ("create_member",)
+
+    @admin.action(description="Create member account for entries")
+    def create_member(self, request: HttpRequest, queryset: QuerySet[WaitingListEntry]) -> None:
+        """Create a user account for this entry.
+
+        Note that actions can soon be made available from the edit page, too:
+        https://github.com/django/django/pull/16012
+        """
+        for entry in queryset:
+            member = Member.objects.create_user(email=entry.email, username=slugify(entry.email), is_active=False)
+            entry.member = member
+            entry.save()
+            messages.info(
+                request,
+                f"Added user for {entry.email} - ensure they have a membership and send an invite email.",
+            )

src/membership/apps.py

@@ -1,11 +1,16 @@
+"""Membership app configuration."""
+
 from django.apps import AppConfig
 from django.db.models.signals import post_migrate
 
 
 class MembershipConfig(AppConfig):
+    """Membership app config."""
+
     name = "membership"
 
-    def ready(self):
+    def ready(self) -> None:
+        """Ready method."""
         from .permissions import persist_permissions
 
         post_migrate.connect(persist_permissions, sender=self)

src/membership/emails.py

@@ -0,0 +1,128 @@
+"""Send email to members, using templates and contexts for the emails.
+
+* We keep everything as plain text for now.
+* Notice that emails can be multilingual
+* Generally, an email consists of templates (for body and subject) and a get_context() method.
+"""
+
+from accounting.models import Order
+from django.contrib import messages
+from django.contrib.auth.tokens import default_token_generator
+from django.contrib.sites.shortcuts import get_current_site
+from django.core.mail.message import EmailMessage
+from django.http import HttpRequest
+from django.template import loader
+from django.utils import translation
+from django.utils.translation import gettext_lazy as _
+
+from .models import Membership
+
+
+class BaseEmail(EmailMessage):
+    """Send emails via templated body and subjects.
+
+    This base class is extended for all email functionality.
+    Because all emails are sent to the Member object, we can keep them gathered here, even when they are generated by
+    other apps (like the accounting app).
+    """
+
+    template = "membership/email/base.txt"
+    # Optional: Set to a template path for subject
+    template_subject = None
+    default_subject = "SET SUBJECT HERE"
+
+    def __init__(self, request: HttpRequest, *args, **kwargs) -> None:
+        self.context = kwargs.pop("context", {})
+        self.user = kwargs.pop("user", None)
+        if self.user:
+            kwargs["to"] = [self.user.email]
+            self.context["user"] = self.user
+            self.context["recipient_name"] = self.user.get_display_name()
+
+        # Necessary to set request before instantiating body and subject
+        self.request = request
+        kwargs.setdefault("subject", self.get_subject())
+        kwargs.setdefault("body", self.get_body())
+
+        super().__init__(*args, **kwargs)
+
+    def get_context_data(self) -> dict:
+        """Resolve common context for sending emails.
+
+        When overwriting, remember to call this via super().
+        """
+        c = self.context
+        site = get_current_site(self.request)
+        c["request"] = self.request
+        c["domain"] = site.domain
+        c["site_name"] = site.name
+        c["protocol"] = "https"  # if self.request and not self.request.is_secure() else "https"
+        return c
+
+    def get_body(self) -> str:
+        """Build the email body from template and context."""
+        if self.user and self.user.language_code:
+            with translation.override(self.user.language_code):
+                body = loader.render_to_string(self.template, self.get_context_data())
+        else:
+            body = loader.render_to_string(self.template, self.get_context_data())
+        return body
+
+    def get_subject(self) -> str:
+        """Build the email subject from template or self.default_subject."""
+        if self.user and self.user.language_code:
+            with translation.override(self.user.language_code):
+                if self.template_subject:
+                    subject = loader.render_to_string(self.template_subject, self.get_context_data()).strip()
+                else:
+                    subject = str(self.default_subject)
+        elif self.template_subject:
+            subject = loader.render_to_string(self.template_subject, self.get_context_data()).strip()
+        else:
+            subject = str(self.default_subject)
+        return subject
+
+    def send_with_feedback(self, *, success_msg: str | None = None, no_message: bool = False) -> None:
+        """Send email, possibly adding feedback via django.contrib.messages."""
+        if not success_msg:
+            success_msg = _("Email successfully sent to {}").format(", ".join(self.to))
+        try:
+            self.send(fail_silently=False)
+            if not no_message:
+                messages.success(self.request, success_msg)
+        except RuntimeError:
+            messages.error(self.request, _("Not sent, something wrong with the mail server."))
+
+
+class InviteEmail(BaseEmail):
+    template = "membership/emails/invite.txt"
+    default_subject = _("Invite to data.coop membership")
+
+    def __init__(self, membership: Membership, request: HttpRequest, *args, **kwargs) -> None:
+        self.membership = membership
+        kwargs["user"] = membership.user
+        kwargs["from_email"] = "kasserer@data.coop"
+        super().__init__(request, *args, **kwargs)
+
+    def get_context_data(self) -> dict:
+        c = super().get_context_data()
+        c["membership"] = self.membership
+        c["token"] = default_token_generator.make_token(self.membership.user)
+        c["referral_code"] = self.membership.referral_code
+        return c
+
+
+class OrderEmail(BaseEmail):
+    template = "membership/emails/order.txt"
+    default_subject = _("Your data.coop order and payment")
+
+    def __init__(self, order: Order, request: HttpRequest, *args, **kwargs) -> None:
+        self.order = order
+        kwargs["user"] = order.member
+        kwargs["from_email"] = "kasserer@data.coop"
+        super().__init__(request, *args, **kwargs)
+
+    def get_context_data(self) -> dict:
+        c = super().get_context_data()
+        c["order"] = self.order
+        return c

src/membership/forms.py

@@ -0,0 +1,39 @@
+from allauth.account.adapter import get_adapter as get_allauth_adapter
+from allauth.account.forms import SetPasswordForm
+from django import forms
+from django.utils.translation import gettext_lazy as _
+
+
+class InviteForm(SetPasswordForm):
+    """Create a new password for a user account that is created through an invite."""
+
+    username = forms.CharField(
+        label=_("Username"),
+        widget=forms.TextInput(attrs={"placeholder": _("Username"), "autocomplete": "username"}),
+    )
+
+    def __init__(self, *args, **kwargs) -> None:
+        self.membership = kwargs.pop("membership")
+        kwargs["user"] = self.membership.user
+        super().__init__(*args, **kwargs)
+
+    def clean_username(self) -> str:
+        """Clean the username value.
+
+        Taken from the allauth Signup form - we should consider that data can be leaked here.
+        """
+        value = self.cleaned_data["username"]
+        # The allauth adapter ensures the username is unique.
+        return get_allauth_adapter().clean_username(value)
+
+    def save(self) -> None:
+        """Save instance to db.
+
+        Note: You can hack a re-activation of a deactivated account
+        by getting a valid token before deactivation (from the reset password form).
+        We can block this by also setting Membership.revoked=False when deactivating someone's account.
+        """
+        self.user.username = self.cleaned_data["username"]
+        self.user.is_active = True
+        self.user.save()
+        super().save()

src/membership/migrations/0001_initial.py

@@ -7,7 +7,6 @@ from django.db import models
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [

src/membership/migrations/0002_subscriptionperiod_remove_membership_period_and_more.py

@@ -2,11 +2,11 @@
 
 import django.contrib.postgres.constraints
 import django.contrib.postgres.fields.ranges
-from django.db import migrations, models
+from django.db import migrations
+from django.db import models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("membership", "0001_initial"),
     ]
@@ -34,9 +34,7 @@ class Migration(migrations.Migration):
                 ),
                 (
                     "period",
-                    django.contrib.postgres.fields.ranges.DateRangeField(
-                        verbose_name="period"
-                    ),
+                    django.contrib.postgres.fields.ranges.DateRangeField(verbose_name="period"),
                 ),
             ],
         ),

src/membership/migrations/0003_membership_period.py

@@ -1,11 +1,11 @@
 # Generated by Django 4.1 on 2023-01-02 21:05
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations
+from django.db import models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("membership", "0002_subscriptionperiod_remove_membership_period_and_more"),
     ]

src/membership/migrations/0004_alter_membership_period.py

@@ -1,11 +1,11 @@
 # Generated by Django 4.1 on 2023-01-02 21:06
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations
+from django.db import models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("membership", "0003_membership_period"),
     ]

src/membership/migrations/0005_member.py

@@ -0,0 +1,23 @@
+# Generated by Django 4.1.5 on 2023-09-16 14:09
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("auth", "0012_alter_user_first_name_max_length"),
+        ("membership", "0004_alter_membership_period"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Member",
+            fields=[],
+            options={
+                "proxy": True,
+                "indexes": [],
+                "constraints": [],
+            },
+            bases=("auth.user",),
+        ),
+    ]

src/membership/migrations/0006_waitinglistentry_alter_membership_options.py

@@ -0,0 +1,32 @@
+# Generated by Django 5.0.7 on 2024-07-20 20:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('membership', '0005_member'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='WaitingListEntry',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('modified', models.DateTimeField(auto_now=True, verbose_name='modified')),
+                ('created', models.DateTimeField(auto_now_add=True, verbose_name='created')),
+                ('email', models.EmailField(max_length=254)),
+                ('geography', models.CharField(blank=True, default='', verbose_name='geography')),
+                ('comment', models.TextField(blank=True)),
+            ],
+            options={
+                'verbose_name': 'waiting list entry',
+                'verbose_name_plural': 'waiting list entries',
+            },
+        ),
+        migrations.AlterModelOptions(
+            name='membership',
+            options={'verbose_name': 'medlemskab', 'verbose_name_plural': 'medlemskaber'},
+        ),
+    ]

src/membership/migrations/0007_membership_activated_membership_activated_on_and_more.py

@@ -0,0 +1,62 @@
+# Generated by Django 5.1b1 on 2024-08-01 10:50
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounting', '0007_alter_orderproduct_options_rename_user_order_member_and_more'),
+        ('membership', '0006_waitinglistentry_alter_membership_options'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='membership',
+            name='activated',
+            field=models.BooleanField(default=False, help_text='Membership was activated.', verbose_name='activated'),
+        ),
+        migrations.AddField(
+            model_name='membership',
+            name='activated_on',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='membership',
+            name='order',
+            field=models.ForeignKey(blank=True, help_text='The order filled in for paying this membership.', null=True, on_delete=django.db.models.deletion.PROTECT, to='accounting.order', verbose_name='order'),
+        ),
+        migrations.AddField(
+            model_name='membership',
+            name='revoked',
+            field=models.BooleanField(default=False, help_text='Membership has explicitly been revoked. Revoking a membership is not associated with regular expiration of the membership period.', verbose_name='revoked'),
+        ),
+        migrations.AddField(
+            model_name='membership',
+            name='revoked_on',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='membership',
+            name='revoked_reason',
+            field=models.TextField(blank=True),
+        ),
+        migrations.AddField(
+            model_name='membershiptype',
+            name='active',
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name='membershiptype',
+            name='products',
+            field=models.ManyToManyField(to='accounting.product'),
+        ),
+        migrations.AlterField(
+            model_name='membership',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='memberships', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

src/membership/migrations/0008_alter_membership_membership_type.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.1b1 on 2024-08-04 10:26
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('membership', '0007_membership_activated_membership_activated_on_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='membership',
+            name='membership_type',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='memberships', to='membership.membershiptype', verbose_name='membership type'),
+        ),
+    ]

src/membership/migrations/0009_membership_referral_code.py

@@ -0,0 +1,32 @@
+# Generated by Django 5.1rc1 on 2024-08-07 22:32
+
+import uuid
+from django.db import migrations, models
+
+
+def create_uuid(apps, schema_editor):
+    Membership = apps.get_model('membership', 'Membership')
+    for membership in Membership.objects.all():
+        membership.referral_code = uuid.uuid4()
+        membership.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('membership', '0008_alter_membership_membership_type'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='membership',
+            name='referral_code',
+            field=models.UUIDField(blank=True, null=True, default=uuid.uuid4, editable=False),
+        ),
+        migrations.RunPython(create_uuid),
+        migrations.AlterField(
+            model_name='membership',
+            name='referral_code',
+            field=models.UUIDField(unique=True, default=uuid.uuid4, editable=False),
+        ),
+    ]

src/membership/migrations/0010_waitinglistentry_member.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.1rc1 on 2024-08-14 08:05
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('membership', '0009_membership_referral_code'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='waitinglistentry',
+            name='member',
+            field=models.ForeignKey(help_text='Once a member account is generated (use the admin action), this field will be marked.', null=True, blank=True, on_delete=django.db.models.deletion.CASCADE, to='membership.member', verbose_name='has member'),
+        ),
+    ]

src/membership/models.py

@@ -1,43 +1,97 @@
+"""Models for the membership app."""
+
+import uuid
+from typing import ClassVar
+from typing import Self
+
 from django.contrib.auth.models import User
+from django.contrib.auth.models import UserManager
 from django.contrib.postgres.constraints import ExclusionConstraint
 from django.contrib.postgres.fields import DateRangeField
 from django.contrib.postgres.fields import RangeOperators
 from django.db import models
 from django.utils import timezone
 from django.utils.translation import gettext as _
-
+from djmoney.money import Money
 from utils.mixins import CreatedModifiedAbstract
 
 
+class NoSubscriptionPeriodFoundError(Exception):
+    """Raised when no subscription period is found."""
+
+
 class Member(User):
+    """Proxy model for the User model to add some convenience methods."""
+
     class QuerySet(models.QuerySet):
-        def annotate_membership(self):
-            from membership.selectors import get_current_subscription_period
+        """QuerySet for the Member model."""
+
+        def annotate_membership(self) -> Self:
+            """Annotate whether the user has an active membership."""
+            from .selectors import get_current_subscription_period
+
+            current_subscription_period = get_current_subscription_period()
+
+            if not current_subscription_period:
+                raise NoSubscriptionPeriodFoundError
 
             return self.annotate(
                 active_membership=models.Exists(
                     Membership.objects.filter(
                         user=models.OuterRef("pk"),
-                        period=get_current_subscription_period().id,
+                        period=current_subscription_period.id,
                     ),
                 ),
             )
 
-    objects = QuerySet.as_manager()
+    objects = UserManager.from_queryset(QuerySet)()
+
+    def get_display_name(self) -> str:
+        """Choose how to display the user in emails and UI and ultimately to other users.
+
+        It's crucial that we currently don't have a good solution for this.
+        We should allow the user to define their own nick.
+        """
+        return self.username
+
+    @property
+    def language_code(self) -> str:
+        """Returns the user's preferred language code.
+
+        We don't have an actual setting for this... because this is a proxy table.
+        """
+        return "da-dk"
 
     class Meta:
         proxy = True
 
 
 class SubscriptionPeriod(CreatedModifiedAbstract):
-    """
+    """A subscription period.
+
     Denotes a period for which members should pay their membership fee for.
     """
 
+    class QuerySet(models.QuerySet):
+        """QuerySet for the Membership model."""
+
+        def _current(self) -> Self:
+            """Filter memberships for the current period."""
+            return self.filter(period__contains=timezone.now())
+
+        def current(self) -> "Membership | None":
+            """Get the current membership."""
+            try:
+                return self._current().get()
+            except self.model.DoesNotExist:
+                return None
+
+    objects = QuerySet.as_manager()
+
     period = DateRangeField(verbose_name=_("period"))
 
     class Meta:
-        constraints = [
+        constraints: ClassVar = [
             ExclusionConstraint(
                 name="exclude_overlapping_periods",
                 expressions=[
@@ -46,31 +100,37 @@ class SubscriptionPeriod(CreatedModifiedAbstract):
             ),
         ]
 
-    def __str__(self):
-        return (
-            f"{self.period.lower} - {self.period.upper or _('next general assembly')}"
-        )
+    def __str__(self) -> str:
+        return f"{self.period.lower} - {self.period.upper or _('next general assembly')}"
 
 
 class Membership(CreatedModifiedAbstract):
-    """
+    """A membership.
+
     Tracks that a user has membership of a given type for a given period.
     """
 
     class QuerySet(models.QuerySet):
-        def for_member(self, member: Member):
+        """QuerySet for the Membership model."""
+
+        def for_member(self, member: Member) -> Self:
+            """Filter memberships for a given member."""
             return self.filter(user=member)
 
-        def _current(self):
+        def active(self) -> Self:
+            """Get only activated, non-revoked memberships (may have expired so use also current())."""
+            return self.filter(activated=True, revoked=False)
+
+        def _current(self) -> Self:
+            """Filter memberships for the current period."""
             return self.filter(period__period__contains=timezone.now())
 
         def current(self) -> "Membership | None":
-            try:
-                return self._current().get()
-            except self.model.DoesNotExist:
-                return None
+            """Get the current membership."""
+            return self._current().first()
 
         def previous(self) -> list["Membership"]:
+            """Get previous memberships."""
             # A naïve way to get previous by just excluding the current. This
             # means that there must be some protection against "future"
             # memberships.
@@ -78,16 +138,15 @@ class Membership(CreatedModifiedAbstract):
 
     objects = QuerySet.as_manager()
 
-    class Meta:
-        verbose_name = _("membership")
-        verbose_name_plural = _("memberships")
+    user = models.ForeignKey("auth.User", on_delete=models.PROTECT, related_name="memberships")
 
-    user = models.ForeignKey("auth.User", on_delete=models.PROTECT)
+    # This code is used for inviting a user to create an account for this membership.
+    referral_code = models.UUIDField(unique=True, default=uuid.uuid4, editable=False)
 
     membership_type = models.ForeignKey(
         "membership.MembershipType",
         related_name="memberships",
-        verbose_name=_("subscription type"),
+        verbose_name=_("membership type"),
         on_delete=models.PROTECT,
     )
 
@@ -96,21 +155,93 @@ class Membership(CreatedModifiedAbstract):
         on_delete=models.PROTECT,
     )
 
-    def __str__(self):
+    order = models.ForeignKey(
+        "accounting.Order",
+        null=True,
+        blank=True,
+        verbose_name=_("order"),
+        help_text=_("The order filled in for paying this membership."),
+        on_delete=models.PROTECT,
+    )
+
+    activated = models.BooleanField(
+        default=False, verbose_name=_("activated"), help_text=_("Membership was activated.")
+    )
+    activated_on = models.DateTimeField(null=True, blank=True)
+
+    revoked = models.BooleanField(
+        default=False,
+        verbose_name=_("revoked"),
+        help_text=_(
+            "Membership has explicitly been revoked. Revoking a membership is not associated with regular expiration "
+            "of the membership period."
+        ),
+    )
+    revoked_reason = models.TextField(blank=True)
+    revoked_on = models.DateTimeField(null=True, blank=True)
+
+    class Meta:
+        verbose_name = _("membership")
+        verbose_name_plural = _("memberships")
+
+    def __str__(self) -> str:
         return f"{self.user} - {self.period}"
 
 
 class MembershipType(CreatedModifiedAbstract):
-    """
+    """A membership type.
+
     Models membership types. Currently only a name, but will in the future
     possibly contain more information like fees.
     """
 
+    name = models.CharField(verbose_name=_("name"), max_length=64)
+
+    products = models.ManyToManyField("accounting.Product")
+
+    active = models.BooleanField(default=True)
+
     class Meta:
         verbose_name = _("membership type")
         verbose_name_plural = _("membership types")
 
-    name = models.CharField(verbose_name=_("name"), max_length=64)
-
-    def __str__(self):
+    def __str__(self) -> str:
         return self.name
+
+    def create_membership(self, user: User) -> Membership:
+        """Create a current membership for this type."""
+        from .selectors import get_current_subscription_period
+
+        return Membership.objects.create(
+            membership_type=self,
+            user=user,
+            period=get_current_subscription_period(),
+        )
+
+    @property
+    def total_including_vat(self) -> Money:
+        """Calculate the total price of this membership (including VAT)."""
+        return sum(product.price + product.vat for product in self.products.all())
+
+
+class WaitingListEntry(CreatedModifiedAbstract):
+    """People who for some reason could want to be added to a waiting list and invited to join later."""
+
+    email = models.EmailField()
+    geography = models.CharField(verbose_name=_("geography"), blank=True, default="")
+    comment = models.TextField(blank=True)
+    member = models.ForeignKey(
+        Member,
+        null=True,
+        blank=True,
+        verbose_name=_("has member"),
+        help_text=_("Once a member account is generated (use the admin action), this field will be marked."),
+        on_delete=models.CASCADE,
+    )
+
+    def __str__(self) -> str:
+        return self.email
+
+    class Meta:
+        verbose_name = _("waiting list entry")
+        verbose_name_plural = _("waiting list entries")

src/membership/permissions.py

@@ -1,3 +1,5 @@
+"""Permissions for the membership app."""
+
 from dataclasses import dataclass
 
 from django.contrib.auth.models import Permission as DjangoPermission
@@ -7,27 +9,32 @@ from django.utils.translation import gettext_lazy as _
 PERMISSIONS = []
 
 
-def persist_permissions(sender, **kwargs):
+def persist_permissions(*args, **kwargs) -> None:  # type: ignore[no-untyped-def] # noqa: ARG001
+    """Persist all permissions."""
     for permission in PERMISSIONS:
         permission.persist_permission()
 
 
 @dataclass
 class Permission:
+    """Dataclass to define a permission."""
+
     name: str
     codename: str
     app_label: str
     model: str
 
-    def __post_init__(self, *args, **kwargs):
+    def __post_init__(self, *args, **kwargs) -> None:
+        """Post init method."""
         PERMISSIONS.append(self)
 
     @property
-    def path(self):
+    def path(self) -> str:
+        """Return the path of the permission."""
         return f"{self.app_label}.{self.codename}"
 
-    def persist_permission(self):
-
+    def persist_permission(self) -> None:
+        """Persist the permission."""
         content_type, _ = ContentType.objects.get_or_create(
             app_label=self.app_label,
             model=self.model,

src/membership/selectors.py

@@ -1,4 +1,9 @@
+"""Selectors for the membership app."""
+
+from __future__ import annotations
+
 import contextlib
+from typing import TYPE_CHECKING
 
 from django.db.models import Exists
 from django.db.models import OuterRef
@@ -8,8 +13,12 @@ from membership.models import Member
 from membership.models import Membership
 from membership.models import SubscriptionPeriod
 
+if TYPE_CHECKING:
+    from django.db.models.query import QuerySet
+
 
 def get_subscription_periods(member: Member | None = None) -> list[SubscriptionPeriod]:
+    """Get all subscription periods."""
     subscription_periods = SubscriptionPeriod.objects.prefetch_related(
         "membership_set",
         "membership_set__user",
@@ -23,12 +32,13 @@ def get_subscription_periods(member: Member | None = None) -> list[SubscriptionP
                     period=OuterRef("pk"),
                 ),
             ),
-        )
+        ).filter(membership_exists=True)
 
     return list(subscription_periods)
 
 
 def get_current_subscription_period() -> SubscriptionPeriod | None:
+    """Get the current subscription period."""
     with contextlib.suppress(SubscriptionPeriod.DoesNotExist):
         return SubscriptionPeriod.objects.prefetch_related(
             "membership_set",
@@ -41,6 +51,7 @@ def get_memberships(
     member: Member | None = None,
     period: SubscriptionPeriod | None = None,
 ) -> Membership.QuerySet:
+    """Get memberships."""
     memberships = Membership.objects.select_related("membership_type").all()
 
     if member:
@@ -52,9 +63,11 @@ def get_memberships(
     return memberships
 
 
-def get_members():
+def get_members() -> QuerySet[Member]:
+    """Get all members."""
     return Member.objects.all().annotate_membership().order_by("username")
 
 
 def get_member(*, member_id: int) -> Member:
+    """Get a member by id."""
     return get_members().get(id=member_id)

src/membership/templates/membership/emails/base.txt

@@ -0,0 +1,9 @@
+{% load i18n %}{% block greeting %}{% blocktrans %}Dear {{ recipient_name }},{% endblocktrans %}{% endblock %}
+
+{% block content %}{% endblock %}
+
+
+{% trans "Cooperatively yours," %}
+{{ site_name }}
+
+{{ protocol }}://{{ domain }}

src/membership/templates/membership/emails/invite.txt

@@ -0,0 +1,7 @@
+{% extends "membership/emails/base.txt" %}{% load i18n %}
+
+{% block content %}{% url 'member:membership-invite' token=token referral_code=referral_code as invite_url %}{% blocktrans %}Here is your secret URL for creating an account with us:
+
+{{ protocol }}://{{ domain }}{{ invite_url }}
+
+If you did not request this account, get in touch with us.{% endblocktrans %}{% endblock %}

src/membership/templates/membership/emails/order.txt

@@ -0,0 +1,17 @@
+{% extends "membership/emails/base.txt" %}{% load i18n %}
+
+{% block content %}{% url 'order:detail' order_id=order.id as order_url %}{% blocktrans %}You have an order in our system, which you can pay here:
+
+{{ protocol }}://{{ domain }}{{ order_url }}
+
+We used to handle membership stuff in a spreadsheet and via bank transfers. This is now all handled with our custom-made membership system. We hope you like it.
+
+If you received this email and no longer want a membership, you can ignore it. But please let us know by writing board@data.coop, so we can erase any personal data we have about your previous membership.
+
+Dansk:
+
+Hej! Så kører medlemsystemet endeligt! Det er mega-fedt, fordi vi længe har haft besvær med manuelle procedurer. Nu har vi flyttet medlemsdata over på member.data.coop, og betalingen fungerer. Vi kan dermed fremover arbejde stille og roligt på at integrere systemet, så man kan styre sine services via medlemssystemet.
+
+Hvis du ikke længere vil være medlem, kan du ignorere mailen her; men du må meget gerne informere os via board@data.coop, så vi kan slette evt. personlige data og services, du har kørende på dit tidligere medlemskab.
+
+{% endblocktrans %}{% endblock %}

src/membership/templates/membership/invite.html

@@ -0,0 +1,21 @@
+{% extends "base.html" %}
+{% load i18n %}
+
+{% block head_title %}
+    {% trans "Membership" %}
+{% endblock %}
+
+{% block content %}
+
+    <div class="content-view">
+        <h2>{% trans "Create account" %}</h2>
+        <p>{% trans "Congratulations! You've been invited to create an account with us:" %}</p>
+        <p>Email: <strong>{{ membership.user.email }}</strong></p>
+        <form method="POST">
+            {% csrf_token %}
+            {{ form.as_p }}
+            <button type="submit" class="btn">{% trans "Create account" %}</button>
+        </form>
+
+    </div>
+{% endblock %}

src/membership/templates/membership/members_admin_detail.html

@@ -1,9 +1,13 @@
 {% extends "base.html" %}
 {% load i18n %}
 
+{% block head_title %}
+    {% trans "Member detail" %}
+{% endblock %}
+
 {% block content %}
 
-
+    <div class="content-view">
     <h1>
         {{ member.username }}
     </h1>
@@ -12,28 +16,30 @@
 
     <h3>{% trans "Membership" %}</h3>
 
-    <table class="table">
-        <thead>
-        <tr>
-            <th>{% trans "Start" %}</th>
-            <th>{% trans "End" %}</th>
-            <th>{% trans "Has membership" %}</th>
-            <th>{% trans "Actions" %}</th>
-        </tr>
-        </thead>
-        <tbody>
-        {% for period in subscription_periods %}
-            <tr {% if not period.period.upper %}class="table-active"{% endif %}>
-                <td>{{ period.period.lower }}</td>
-                <td>{{ period.period.upper }}</td>
-                <td>{{ period.membership_exists }}</td>
-                <td></td>
+    {% if subscription_periods %}
+        <table class="table">
+            <thead>
+            <tr>
+                <th>{% trans "Start" %}</th>
+                <th>{% trans "End" %}</th>
+                <th>{% trans "Has membership" %}</th>
+                <th>{% trans "Actions" %}</th>
             </tr>
-        {% endfor %}
-        </tbody>
-    </table>
-
-
-
+            </thead>
+            <tbody>
+            {% for period in subscription_periods %}
+                <tr {% if not period.period.upper %}class="table-active"{% endif %}>
+                    <td>{{ period.period.lower }}</td>
+                    <td>{{ period.period.upper }}</td>
+                    <td>{{ period.membership_exists }}</td>
+                    <td></td>
+                </tr>
+            {% endfor %}
+            </tbody>
+        </table>
+    {% else %}
+        {% trans "No memberships" %}
+    {% endif %}
+    </div>
 
 {% endblock %}

src/membership/templates/membership/membership_overview.html

@@ -1,8 +1,14 @@
 {% extends "base.html" %}
 {% load i18n %}
 
+{% block head_title %}
+    {% trans "Membership" %}
+{% endblock %}
+
 {% block content %}
 
+    <div class="content-view">
+        <h2>Membership settings</h2>
     {% if not current_membership %}
         <p>{% trans "You do not have an active membership!" %}</p>
 
@@ -20,4 +26,38 @@
         <p>{% trans "Period" %}: {{ current_period.lower|date:"SHORT_DATE_FORMAT" }} to {{ current_period.upper|date:"SHORT_DATE_FORMAT"|default:next_general_assembly }}</p>
         <p>{% trans "Type" %}: {{ current_membership.membership_type }}</p>
     {% endif %}
-    {% endblock %}
+    </div>
+
+    <div class="content-view">
+        <h2>Profile settings</h2>
+        <form>
+            <div>
+                <label for="username">
+                Username
+                </label>
+                <input id="username" type="text" value="{{user}}" />
+            </div>
+
+            <div>
+                <label for="first_name">
+                First name
+                </label>
+                <input id="first_name" type="text" value="{{user.first_name}}" />
+            </div>
+
+            <div>
+                <label for="last_name">
+                Last name
+                </label>
+                <input id="last_name" type="text" value="{{user.last_name}}" />
+            </div>
+
+            <button>Update Profile</button>
+        </form>
+    </div>
+
+    <div class="view-list">
+        <h2>Email settings</h2>
+        <button>Update Email</button>
+    </div>
+{% endblock %}

src/membership/views.py

@@ -1,20 +1,44 @@
-from django.contrib.auth.decorators import login_required
-from django.contrib.auth.decorators import permission_required
-from django.utils.translation import gettext_lazy as _
-from zen_queries import render
+"""Views for the membership app."""
 
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from django.contrib import messages
+from django.contrib.auth.tokens import default_token_generator
+from django.http import HttpResponseForbidden
+from django.shortcuts import get_object_or_404
+from django.shortcuts import redirect
+from django.utils.translation import gettext_lazy as _
+from django_ratelimit.decorators import ratelimit
+from django_view_decorator import namespaced_decorator_factory
+from utils.view_utils import RenderConfig
+from utils.view_utils import RowAction
+from utils.view_utils import render
+
+from .forms import InviteForm
+from .models import Membership
 from .permissions import ADMINISTRATE_MEMBERS
 from .selectors import get_member
 from .selectors import get_members
 from .selectors import get_memberships
 from .selectors import get_subscription_periods
-from utils.view_utils import render_list
-from utils.view_utils import RowAction
+
+if TYPE_CHECKING:
+    from django.http import HttpRequest
+    from django.http import HttpResponse
+
+member_view = namespaced_decorator_factory(namespace="member", base_path="membership")
 
 
-@login_required
-def membership_overview(request):
-    memberships = get_memberships(user=request.user)
+@member_view(
+    paths="",
+    name="membership-overview",
+    login_required=True,
+)
+def membership_overview(request: HttpRequest) -> HttpResponse:
+    """View to show the membership overview."""
+    memberships = get_memberships(member=request.user)
     current_membership = memberships.current()
     previous_memberships = memberships.previous()
 
@@ -33,13 +57,25 @@ def membership_overview(request):
     )
 
 
-@login_required
-@permission_required(ADMINISTRATE_MEMBERS.path)
-def members_admin(request):
+admin_members_view = namespaced_decorator_factory(
+    namespace="admin-members",
+    base_path="admin",
+)
+
+
+@admin_members_view(
+    paths="members/",
+    name="list",
+    login_required=True,
+    permissions=[ADMINISTRATE_MEMBERS.path],
+)
+def members_admin(request: HttpRequest) -> HttpResponse:
+    """View to list all members."""
     users = get_members()
 
-    return render_list(
-        request=request,
+    render_config = RenderConfig(
+        entity_name="member",
+        entity_name_plural="members",
         paginate_by=20,
         objects=users,
         columns=[
@@ -52,22 +88,32 @@ def members_admin(request):
         row_actions=[
             RowAction(
                 label=_("View"),
-                url_name="admin-members-detail",
+                url_name="admin-members:detail",
                 url_kwargs={"member_id": "id"},
             ),
         ],
     )
 
+    return render_config.render_list(
+        request=request,
+    )
 
-@login_required
-@permission_required(ADMINISTRATE_MEMBERS.path)
-def members_admin_detail(request, member_id):
+
+@admin_members_view(
+    paths="<int:member_id>/",
+    name="detail",
+    login_required=True,
+    permissions=[ADMINISTRATE_MEMBERS.path],
+)
+def members_admin_detail(request: HttpRequest, member_id: int) -> HttpResponse:
+    """View to show the details of a member."""
     member = get_member(member_id=member_id)
     subscription_periods = get_subscription_periods(member=member)
 
     context = {
         "member": member,
         "subscription_periods": subscription_periods,
+        "base_path": "admin-members:list",
     }
 
     return render(
@@ -75,3 +121,49 @@ def members_admin_detail(request, member_id):
         template_name="membership/members_admin_detail.html",
         context=context,
     )
+
+
+@ratelimit(group="membership", key="ip", rate="10/d", method="ALL", block=True)
+@member_view(
+    paths="invite/<str:referral_code>/<str:token>/",
+    name="membership-invite",
+    login_required=False,
+)
+def invite(request: HttpRequest, referral_code: str, token: str) -> HttpResponse:
+    """View to invite a member to create a membership.
+
+    The token belongs to a non-active Member object. If the token is valid,
+    the caller is allowed to create a membership.
+
+    We ratelimit this view so it's not possible to brute-force tokens.
+    """
+    if request.user.is_authenticated:
+        return HttpResponseForbidden("You're already logged in. So you cannot receive an invite.")
+
+    # Firstly, we get the membership by the referral code.
+    membership = get_object_or_404(Membership, referral_code=referral_code, user__is_active=False, revoked=False)
+
+    token_valid = default_token_generator.check_token(membership.user, token)
+
+    if not token_valid:
+        raise HttpResponseForbidden("Token not valid - maybe it expired?")
+
+    if request.method == "POST":
+        form = InviteForm(membership=membership, data=request.POST)
+        if form.is_valid():
+            form.save()
+            messages.info(request, _("Password is set for your account and you can now login."))
+            return redirect("account_login")
+    else:
+        form = InviteForm(membership=membership)
+
+    context = {
+        "token": token,
+        "membership": membership,
+        "form": form,
+    }
+    return render(
+        request=request,
+        template_name="membership/invite.html",
+        context=context,
+    )

src/project/__init__.py

@@ -0,0 +1 @@
+"""data.coop member system."""

src/project/context_processors.py

@@ -1,5 +0,0 @@
-from django.contrib.sites.shortcuts import get_current_site
-
-
-def current_site(request):
-    return {"site": get_current_site(request)}

src/project/settings.py

@@ -1,8 +1,13 @@
+"""Settings for the project."""
+
 from pathlib import Path
 
+import django_stubs_ext
 from django.utils.translation import gettext_lazy as _
 from environs import Env
 
+django_stubs_ext.monkeypatch()
+
 env = Env()
 env.read_env()
 
@@ -40,6 +45,7 @@ DJANGO_APPS = [
 THIRD_PARTY_APPS = [
     "allauth",
     "allauth.account",
+    "django_view_decorator",
 ]
 
 LOCAL_APPS = [
@@ -65,6 +71,7 @@ MIDDLEWARE = [
     "django.contrib.auth.middleware.AuthenticationMiddleware",
     "django.contrib.messages.middleware.MessageMiddleware",
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
+    "allauth.account.middleware.AccountMiddleware",
 ]
 
 ROOT_URLCONF = "project.urls"
@@ -80,7 +87,9 @@ TEMPLATES = [
                 "django.template.context_processors.request",
                 "django.contrib.auth.context_processors.auth",
                 "django.contrib.messages.context_processors.messages",
-                "project.context_processors.current_site",
+            ],
+            "builtins": [
+                "django.templatetags.i18n",
             ],
         },
     },
@@ -118,6 +127,7 @@ EMAIL_BACKEND = env.str(
     default="django.core.mail.backends.console.EmailBackend",
 )
 DEFAULT_FROM_EMAIL = env.str("DEFAULT_FROM_EMAIL", default="")
+SERVER_EMAIL = env.str("SERVER_EMAIL", default=DEFAULT_FROM_EMAIL)
 # Parse email URLs, e.g. "smtp://"
 email = env.dj_email_url("EMAIL_URL", default="smtp://")
 EMAIL_HOST = email["EMAIL_HOST"]
@@ -150,6 +160,32 @@ ACCOUNT_EMAIL_REQUIRED = True
 ACCOUNT_SIGNUP_PASSWORD_ENTER_TWICE = False
 ACCOUNT_USERNAME_REQUIRED = False
 
+# Logging
+# We want to log everything to stdout in docker
+LOGGING = {
+    "version": 1,
+    "disable_existing_loggers": False,
+    "handlers": {
+        "console": {
+            "level": "DEBUG",
+            "class": "logging.StreamHandler",
+        },
+    },
+    "loggers": {
+        "": {
+            "handlers": ["console"],
+            "level": "DEBUG",
+        },
+    },
+}
+
+STRIPE_API_KEY = env.str("STRIPE_API_KEY")
+STRIPE_ENDPOINT_SECRET = env.str("STRIPE_ENDPOINT_SECRET")
+
+# The number of seconds a password reset link is valid for (default: 3 days).
+# We've extended this to 7 days because invites then last for 1 week.
+PASSWORD_RESET_TIMEOUT = 60 * 60 * 24 * 7
+
 if DEBUG:
     INSTALLED_APPS += ["debug_toolbar", "django_browser_reload"]
     MIDDLEWARE += [

src/project/static/css/dark-style.css

@@ -0,0 +1,67 @@
+html.dark body {
+  --splash: #5b47e0;
+  background: var(--dark-dark);
+  color: var(--medium-dust)
+}
+
+html.dark h1,
+html.dark h2,
+html.dark h3,
+html.dark h4,
+html.dark h5,
+html.dark h6,
+html.dark footer,
+html.dark nav ol li a {
+  color: var(--medium-dust);
+}
+
+html.dark nav ol li a:not(.current):hover {
+  border-color: var(--medium-dust);
+}
+
+html.dark header,
+html.dark main aside,
+html.dark nav {
+  background: #1d1d1d;
+}
+
+html.dark nav {
+  border: none;
+}
+
+html.dark hr {
+  border-color: var(--twilight);
+}
+
+html.dark main aside div,
+html.dark article div.content-view {
+  background: var(--dark-twilight);
+}
+
+html.dark article table tbody {
+  background: var(--dark-twilight);
+}
+
+html.dark article table tbody tr:nth-child(2n+1) {
+  background: var(--dark);
+}
+
+html.dark article table tbody tr:nth-child(2n+1) td {
+  border-top: 1px solid var(--dark-dark);
+  border-bottom: 1px solid var(--dark-dark);
+}
+
+html.dark article table tbody tr:last-child td {
+  border-bottom: var(--half-space) solid var(--twilight);
+}
+
+html.dark form>div>input[type="text"],
+html.dark form>div>input[type="password"],
+html.dark input[type="email"] {
+  border: 2px solid var(--twilight);
+  border-radius: 6px;
+  padding: 8px;
+  background: var(--dark-dark);
+  width: 100%;
+  color: var(--light-dust);
+}

src/project/static/css/style.css

@@ -0,0 +1,564 @@
+/* Reset */
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+* {
+  margin: 0;
+}
+
+body {
+  line-height: 1.5;
+}
+
+img,
+picture,
+video,
+canvas,
+svg {
+  display: block;
+  max-width: 100%;
+}
+
+input,
+button,
+textarea,
+select {
+  font: inherit;
+}
+
+p,
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  overflow-wrap: break-word;
+}
+
+#root,
+#__next {
+  isolation: isolate;
+}
+
+/* Variables */
+:root {
+  /* Colors */
+  --light: #ffffff;
+  --light-dust: #fefef9;
+  --dust: #f4f1ef;
+  --medium-dust: #dadada;
+  --dark-dust: #bfbfbf;
+  --fade: #878787;
+  --twilight: #4a4a4a;
+  --dark-twilight: #2f2f2f;
+  --dark: #2a2a2a;
+  --dark-dark: #121212;
+  --light-custard: #eee7d5;
+  --custard: #f0dcac;
+  --dark-custard: #d4c7a9;
+  --water: #a8f3f4;
+  --splash: #4b3aba;
+
+  /* Sizes */
+  --space: 12px;
+  --double-space: calc(var(--space) * 2);
+  --half-space: calc(var(--space) / 2);
+  --quarter-space: calc(var(--space) / 4);
+  --outer-space: var(--double-space);
+}
+
+@media (min-width: 1380px) {
+  :root {
+    --outer-space: 15%;
+  }
+}
+
+html,
+body {
+  height: 100%;
+  font-size: 1.05em;
+}
+
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  font-weight: 600;
+  color: var(--twilight);
+}
+
+a {
+  font-weight: 500;
+  color: var(--splash);
+  text-decoration: none;
+  cursor: pointer;
+}
+
+hr {
+  margin: var(--double-space) 0;
+  height: 0;
+  border: 0;
+  border-bottom: 1px solid var(--dark-custard);
+}
+
+body {
+  margin: 0;
+  padding: 0;
+  background: var(--custard);
+  font-family: Inter;
+  font-weight: 400;
+  line-height: 1.6;
+  color: var(--dark);
+}
+
+header {
+  display: flex;
+  padding: var(--double-space) var(--outer-space);
+  background: var(--light);
+  justify-content: space-between;
+  align-items: center;
+}
+
+header>h1 {
+  font-size: 1.44em;
+}
+
+#switch-icon {
+  width: 30px;
+  height: 30px;
+  display: inline-block;
+  vertical-align: middle;
+  margin: 0 var(--space);
+  top: -2px;
+  position: relative;
+}
+
+#switch-icon #layer1 path {
+  fill: var(--twilight);
+}
+
+header>div>a#logout {
+  padding: 6px 12px;
+  border-radius: 6px;
+  background: var(--twilight);
+  text-decoration: none;
+  color: var(--dust);
+  transition: background 0.2s;
+}
+
+header>div>a#logout:hover {
+  background: var(--splash);
+  color: var(--light);
+}
+
+aside {
+  padding: 0 var(--outer-space) var(--double-space) var(--outer-space);
+  background: var(--light);
+}
+
+aside>div {
+  background: var(--dust);
+  padding: var(--double-space);
+  border-radius: var(--quarter-space);
+  overflow: hidden;
+}
+
+aside>div>h2 {
+  font-size: 1.22em;
+  margin: 0 0 6px 0;
+}
+
+aside>div>figure {
+  width: 100px;
+  height: 100px;
+  border: 1px solid var(--dark-dust);
+  float: left;
+  margin-right: var(--double-space);
+}
+
+aside>div>dl {
+  overflow: hidden;
+}
+
+aside>div>dl>dt {
+  float: left;
+  clear: left;
+  margin: 0 var(--double-space) 0 0;
+  width: 180px;
+  font-weight: 600;
+  color: var(--twilight);
+}
+
+nav {
+  display: block;
+  border-bottom: 1px solid var(--dark-custard);
+  background: var(--light);
+}
+
+nav ol {
+  margin: 0 calc(var(--outer-space));
+  padding: 0;
+  list-style-type: none;
+  overflow: hidden;
+}
+
+nav ol li {
+  margin: 0;
+  padding: 0;
+  float: left;
+}
+
+nav>ol>li>a {
+  display: block;
+  padding: var(--half-space) var(--half-space) var(--quarter-space);
+  margin: 0 var(--space);
+  border-bottom: var(--half-space) solid transparent;
+  text-decoration: none;
+  color: var(--dark);
+  cursor: pointer;
+  font-weight: 500;
+  letter-spacing: 0.04em;
+}
+
+nav>ol>li:first-child>a {
+  margin-left: 0;
+}
+
+nav ol li a:hover {
+  border-color: rgba(0, 0, 0, 0.6);
+}
+
+nav ol li a.current {
+  font-weight: bold;
+  border-color: var(--splash);
+  color: var(--splash);
+}
+
+article {
+  padding: var(--double-space) var(--outer-space);
+}
+
+article div.content-view {
+  background: var(--dust);
+  padding: var(--double-space);
+  margin-bottom: var(--space);
+}
+
+div.content-view>h2 {
+  margin: 0 0 var(--space) 0;
+}
+
+div.services {
+  display: flex;
+  justify-content: space-between;
+  gap: var(--double-space);
+  flex-wrap: wrap;
+}
+
+div.services>div,
+div.infobox {
+  background: var(--light);
+  padding: var(--double-space);
+  border-radius: 6px;
+  flex: 240px;
+  max-width: 420px;
+  display: flex;
+  flex-flow: column;
+  justify-content: space-between;
+}
+
+div.infobox button {
+  margin-top: var(--double-space);
+}
+
+div.services>div>div.description {
+  margin-bottom: var(--double-space);
+}
+
+div.services>div>div.description>p {
+  margin-top: var(--half-space);
+}
+
+div.services>div>a,
+a.button,
+button {
+  display: block;
+  color: var(--light);
+  background: var(--splash);
+  padding: var(--space) var(--double-space);
+  border-radius: var(--quarter-space);
+  opacity: 0.85;
+  cursor: pointer;
+  text-align: center;
+  border: 0;
+  font-weight: 600;
+  text-decoration: none;
+
+  transition: opacity 0.15s;
+}
+
+button.small {
+  font-size: 0.78em;
+  padding: var(--half-space) var(--space);
+}
+
+div.services>div>a:hover,
+a.button:hover,
+button:hover {
+  opacity: 1.0;
+}
+
+button:disabled {
+  opacity: 0.6;
+  background: var(--twilight);
+  cursor: default;
+}
+
+button.secondary {
+  background: var(--twilight);
+}
+
+article table {
+  width: 100%;
+  border-spacing: 0;
+  margin: var(--space) 0;
+}
+
+article table thead th {
+  background: var(--twilight);
+  color: var(--medium-dust);
+}
+
+article table thead th a {
+  color: var(--light);
+}
+
+article table thead th:first-child {
+  border-radius: var(--half-space) 0 0 0;
+}
+
+article table thead th:last-child {
+  border-radius: 0 var(--half-space) 0 0;
+}
+
+article table tbody {
+  background: var(--light-dust);
+}
+
+article table tbody tr:nth-child(odd) {
+  background: var(--light-custard);
+}
+
+article table tbody tr:nth-child(odd) td {
+  border-top: 1px solid var(--dark-custard);
+  border-bottom: 1px solid var(--dark-custard);
+}
+
+article table tbody tr:last-child td {
+  border-bottom: var(--half-space) solid var(--twilight);
+}
+
+article table thead th,
+article table tbody td {
+  padding: var(--space);
+  text-align: left;
+}
+
+article table#user_email_table tbody tr td:first-child {
+  text-align: center;
+}
+
+form>div {
+  margin: 0 0 var(--double-space);
+}
+
+form>div>label {
+  display: block;
+  margin: 0 0 6px;
+}
+
+form>div>input[type="text"],
+form>div>input[type="password"],
+input[type="email"] {
+  border: 2px solid var(--twilight);
+  border-radius: 6px;
+  padding: 8px;
+  background: var(--light-dust);
+  width: 100%;
+  color: var(--dark);
+}
+
+form fieldset {
+  border: 0;
+  padding: 0;
+  margin: 0;
+}
+
+form div.buttonHolder button {
+  display: inline-block;
+}
+
+#email-add-overlay {
+  display: none;
+  position: fixed;
+  left: 0;
+  top: 0;
+  bottom: 0;
+  right: 0;
+  background: rgba(0, 0, 0, 0.8);
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+}
+
+#email-add-overlay .content-view {
+  width: 600px;
+  padding: var(--double-space);
+}
+
+#email-add-overlay .content-view p {
+  margin: var(--double-space) 0;
+}
+
+#login {
+  height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+#loginbox {
+  border-radius: var(--space);
+  border: 6px solid white;
+  width: 800px;
+  height: 500px;
+
+  display: flex;
+  flex-flow: row;
+}
+
+#loginbox>div {
+  padding: var(--double-space);
+  flex: 1;
+}
+
+#loginbox label {
+  color: var(--twilight);
+}
+
+#loginbox>div.login {
+  background: var(--light-dust);
+  display: flex;
+  flex-flow: column;
+  justify-content: space-between;
+}
+
+#loginbox>div.signup {
+  background: var(--water);
+  display: flex;
+  flex-flow: column;
+  align-items: center;
+}
+
+#loginbox>div:first-child {
+  border-radius: var(--half-space) 0 0 var(--half-space);
+}
+
+#loginbox>div:last-child {
+  border-radius: 0 var(--half-space) var(--half-space) 0;
+}
+
+#loginbox>div:last-child>* {
+  flex: 1;
+}
+
+#loginbox div.new_here {
+  margin-top: var(--double-space);
+}
+
+#loginbox div.new_here h2 {
+  margin: var(--double-space) 0;
+}
+
+#loginbox button {
+  width: 100%;
+}
+
+#loginbox img {
+  padding: 0 var(--double-space);
+}
+
+footer {
+  margin: var(--space) var(--outer-space);
+  padding: var(--space);
+  border-radius: var(--quarter-space);
+  background: var(--dark);
+  color: var(--dust);
+  font-size: 0.78em;
+  opacity: 0.8;
+}
+
+footer a, footer a:visited, footer a:active {
+  color: var(--dust);
+  text-decoration: underline;
+}
+
+span.time_remaining {
+  color: var(--fade);
+}
+
+.pagination {
+  display: flex;
+  justify-content: center;
+  list-style: none;
+  padding: var(--half-space) 0;
+  margin: 0;
+}
+
+.pagination>li {
+  margin: 0 var(--half-space);
+}
+
+.pagination>li:first-child {
+  margin-right: var(--double-space);
+}
+
+.pagination>li:last-child {
+  margin-left: var(--double-space);
+}
+
+.pagination .page-item {
+  border: 1px solid var(--fade);
+  padding: var(--quarter-space) var(--half-space);
+  border-radius: var(--half-space);
+  background: var(--light-dust);
+  font-size: 0.78em;
+}
+
+.pagination .page-link {
+  padding: var(--half-space);
+  color: var(--twilight);
+}
+
+.pagination .page-item.active {
+  background: var(--twilight);
+}
+
+.pagination .page-item.active .page-link {
+  color: var(--light-dust);
+  font-weight: bold;
+}
+
+.pagination .page-item.disabled {
+  opacity: 0.6;
+}
+
+.pagination .page-item.disabled .page-link {
+  cursor: default;
+}