230 lines
6.8 KiB
Elm
230 lines
6.8 KiB
Elm
module Views.FilterView exposing (filterSidebar, applyFilters, parseFilterFromQuery, filterToQuery)
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-- Local modules
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import Messages exposing (Msg(..))
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import Models exposing (Model, EventInstance, Filter, Day, FilterQuery, Route(OverviewFilteredRoute), VideoRecordingFilter)
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import Routing exposing (routeToString)
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-- Core modules
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import Regex
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-- External modules
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import Html exposing (Html, text, div, ul, li, span, i, h4)
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import Html.Attributes exposing (class, classList)
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import Html.Events exposing (onClick)
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import Date.Extra exposing (Interval(..), equalBy)
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applyFilters : Day -> Model -> List EventInstance
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applyFilters day model =
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let
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types =
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List.map (\eventType -> eventType.slug)
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(if List.isEmpty model.filter.eventTypes then
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model.eventTypes
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else
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model.filter.eventTypes
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)
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locations =
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List.map (\eventLocation -> eventLocation.slug)
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(if List.isEmpty model.filter.eventLocations then
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model.eventLocations
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else
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model.filter.eventLocations
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)
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videoFilters =
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List.map (\filter -> filter.filter)
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(if List.isEmpty model.filter.videoRecording then
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videoRecordingFilters
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else
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model.filter.videoRecording
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)
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filteredEventInstances =
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List.filter
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(\eventInstance ->
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(Date.Extra.equalBy Month eventInstance.from day.date)
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&& (Date.Extra.equalBy Date.Extra.Day eventInstance.from day.date)
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&& List.member eventInstance.location locations
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&& List.member eventInstance.eventType types
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&& applyVideoRecordingFilters videoFilters eventInstance
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)
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model.eventInstances
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in
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filteredEventInstances
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filterSidebar : Model -> Html Msg
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filterSidebar model =
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div
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[ classList
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[ ( "col-sm-3", True )
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, ( "col-sm-push-9", True )
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, ( "schedule-sidebar", True )
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, ( "schedule-filter", True )
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, ( "sticky", True )
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]
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]
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[ h4 [] [ text "Filter" ]
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, div [ class "form-group" ]
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[ filterView "Type" model.eventTypes model.filter.eventTypes ToggleEventTypeFilter
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, filterView "Location" model.eventLocations model.filter.eventLocations ToggleEventLocationFilter
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, filterView "Video" videoRecordingFilters model.filter.videoRecording ToggleVideoRecordingFilter
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]
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]
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notRecordedFilter : EventInstance -> Bool
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notRecordedFilter eventInstance =
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eventInstance.videoRecording == False
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recordedFilter : EventInstance -> Bool
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recordedFilter eventInstance =
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eventInstance.videoRecording == True
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hasRecordingFilter : EventInstance -> Bool
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hasRecordingFilter eventInstance =
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eventInstance.videoUrl /= ""
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videoRecordingFilters : List VideoRecordingFilter
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videoRecordingFilters =
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[ { name = "Will not be recorded", slug = "not-to-be-recorded", filter = notRecordedFilter }
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, { name = "Will recorded", slug = "to-be-recorded", filter = recordedFilter }
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, { name = "Has recording", slug = "has-recording", filter = hasRecordingFilter }
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]
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applyVideoRecordingFilters : List (EventInstance -> Bool) -> EventInstance -> Bool
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applyVideoRecordingFilters filters eventInstance =
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let
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results =
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List.map (\filter -> filter eventInstance) filters
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in
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List.member True results
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filterView :
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String
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-> List { a | name : String }
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-> List { a | name : String }
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-> ({ a | name : String } -> Msg)
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-> Html Msg
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filterView name possibleFilters currentFilters action =
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div []
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[ text (name ++ ":")
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, ul [] (List.map (\filter -> filterChoiceView filter currentFilters action) possibleFilters)
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]
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filterChoiceView :
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{ a | name : String }
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-> List { a | name : String }
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-> ({ a | name : String } -> Msg)
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-> Html Msg
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filterChoiceView filter currentFilters action =
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let
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active =
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List.member filter currentFilters
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notActive =
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not active
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in
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li []
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[ div
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[ classList
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[ ( "btn", True )
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, ( "btn-default", True )
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, ( "filter-choice-active", active )
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]
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, onClick (action filter)
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]
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[ span []
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[ i [ classList [ ( "fa", True ), ( "fa-minus", active ), ( "fa-plus", notActive ) ] ] []
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, text (" " ++ filter.name)
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]
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]
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]
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findFilter : List { a | slug : String } -> String -> Maybe { a | slug : String }
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findFilter modelItems filterSlug =
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List.head (List.filter (\x -> x.slug == filterSlug) modelItems)
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getFilter : String -> List { a | slug : String } -> String -> List { a | slug : String }
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getFilter filterType modelItems query =
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let
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filterMatch =
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query
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|> Regex.find (Regex.AtMost 1) (Regex.regex (filterType ++ "=([\\w,_-]+)&*"))
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|> List.concatMap .submatches
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|> List.head
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|> Maybe.withDefault Nothing
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|> Maybe.withDefault ""
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filterSlugs =
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String.split "," filterMatch
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in
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List.filterMap (\x -> findFilter modelItems x) filterSlugs
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parseFilterFromQuery : FilterQuery -> Model -> Filter
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parseFilterFromQuery query model =
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let
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types =
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getFilter "type" model.eventTypes query
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locations =
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getFilter "location" model.eventLocations query
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videoFilters =
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getFilter "video" videoRecordingFilters query
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in
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{ eventTypes = types
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, eventLocations = locations
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, videoRecording = videoFilters
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}
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filterToQuery : Filter -> FilterQuery
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filterToQuery filter =
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let
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typePart =
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case String.join "," (List.map .slug filter.eventTypes) of
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"" ->
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""
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types ->
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"type=" ++ types
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locationPart =
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case String.join "," (List.map .slug filter.eventLocations) of
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"" ->
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""
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locations ->
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"location=" ++ locations
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videoPart =
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case String.join "," (List.map .slug filter.videoRecording) of
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"" ->
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""
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video ->
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"video=" ++ video
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result =
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String.join "&" (List.filter (\x -> x /= "") [ typePart, locationPart, videoPart ])
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in
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routeToString <| OverviewFilteredRoute result
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