#!/bin/bash

ISO_DATE=$(date -u +"%Y-%m-%dT%H:%M:%SZ")

# Ensure registry repository is up-to-date
#git -C ../registry/ pull upstream master:master --quiet 2>&1

# Checkout master branch in dn42/repository
git -C ../registry/ checkout master --quiet

# Do a git pull beforehand to ensure our repository is up-to-date
#git checkout master --quiet
#git pull origin master:master --quiet --rebase

if ! [ -d roa ] ; then mkdir -p roa ; fi

for file in README.md {bird,bird4,bird6}_{route,roa}_dn42.conf export{_rfc8416,}_dn42.json ; do
  if ! [ -f roa/$file ] ; then touch roa/$file ; fi
done

# Do the same for sub-repo if exists
if [ -d roa/.git ] ; then
  git -C roa/ checkout master --quiet
  if [ $(git -C roa/ remote | grep origin) ] ; then
    git -C roa/ pull origin master:master --quiet --rebase
  fi
fi

# Ensure sub-repo is created to track roa file udpates
if [ ! -d roa/ ] ; then mkdir roa ; fi
if [ ! -f roa/.git/config ] ; then
  git -C roa/ init
  if [ ! -f roa/README.md ] ; then
    touch roa/README.md
    echo '## roas' | tee roa/README.md ; fi
  git -C roa/ commit --allow-empty -m "Initial commit"
  git -C roa/ commit README.md -m "Add README.md" ; fi

# Update with data from registry
php roagen.php
php rfc8416.php

# Write out last commit to file
echo "## Notes

- These files are Bird 1.x compatible:
  - [bird_roa_dn42.conf](bird_roa_dn42.conf)
  - [bird4_roa_dn42.conf](bird4_roa_dn42.conf)
  - [bird6_roa_dn42.conf](bird6_roa_dn42.conf)
- These files are Bird 2.x compatible:
  - [bird_route_dn42.conf](bird_route_dn42.conf)
  - [bird4_route_dn42.conf](bird4_route_dn42.conf)
  - [bird6_route_dn42.conf](bird6_route_dn42.conf)
- These files are [Routinator][2] and [gortr][3] ([src][6]) compatible:
  - [export_rfc8416_dn42.json](export_rfc8416_dn42.json) _(SLURM standard, format specified in [RFC 8416][4])_
- These files are [gortr][3] compatible:
  - [export_dn42.json](export_dn42.json)

Note the gortr source file is DateTime stamped only, it is not signed with any certificaty. So you will need to add
\`-verify=false\` as a runtime parameter when loading the cache file. Alternatively, use gortr with a slurm file
instead (e.g. \`-slurm export_rfc8416_dn42.json\`) as a command-line parameter.

## [Last merge commit][0] at [dn42 registry][1]

\`\`\`
$(git -C ../registry/ log -n 1 --date=iso8601 --merges | grep -v Reviewed- | grep -v Author | sed -E -e 's/^[Cc]ommit ([a-f0-9]+).*/Commit \1/' -e 's/[ ]+$//g')
\`\`\`

## crontab

You can setup a [cronjob][5] to check in with updates to the ROA files listed
above on regular intervals.

Currently the ROA files published here is refreshed every 10th hour if
updates has been made to the [DN42 registry][1].

## Misc statistics

- ROAs IPv4:  $(cat roa/bird4_route_dn42.conf | grep -v '^#' | grep -v '^$' | wc -l)
- ROAs IPv6:  $(cat roa/bird6_route_dn42.conf | grep -v '^#' | grep -v '^$' | wc -l)
- ROAs total: $(cat roa/bird_route_dn42.conf  | grep -v '^#' | grep -v '^$' | wc -l)

[0]: https://git.dn42.dev/dn42/registry/commit/$(git -C ../registry/ log -n 1 --merges --pretty='format:%H')
[1]: https://git.dn42.dev/dn42/registry
[2]: https://github.com/NLnetLabs/routinator
[3]: https://github.com/cloudflare/gortr
[4]: https://tools.ietf.org/html/rfc8416
[5]: doc/crontab.md
[6]: https://github.com/cloudflare/gortr/#configure-filters-and-overrides-slurm
" > roa/README.md

# computer checksums
for FILE in $(ls -1 roa/{bird*.conf,export*.json,README.md} | sed -e 's_roa/__g' | xargs) ; do
  #md5sum roa/${FILE} > roa/${FILE}.md5
  #sha1sum roa/${FILE} > roa/${FILE}.sha1
  sha256sum roa/${FILE} > roa/${FILE}.sha256
  #sha512sum roa/${FILE} > roa/${FILE}.sha512
done

# Commit latest version of ROA files
git -C roa/ add README.md *.conf *.json *.sha256
git -C roa/ commit -m "Updated ROA files - $ISO_DATE" --quiet

# Push ROA repository to every remote configured
if [ $(git -C roa/ remote | grep -vi upstream | wc -l) > 0 ] ; then
  for REMOTE in $(git -C roa/ remote | grep -vi upstream | paste -sd " " -) ; do
    git -C roa/ push $REMOTE master:master --quiet
  done
fi