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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DefaultSignatures #-}
{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeOperators #-}
module Server.ControlRoom (ControlRoomAPI, controlRoomServer) where
import Control.Monad (unless, when)
import Control.Monad.IO.Class (MonadIO (liftIO))
import qualified Data.ByteString.Char8 as C8
import qualified Data.Map as M
import Data.Swagger (ToSchema (..))
import Data.Text (Text)
import qualified Data.Text as T
import Lucid (Html, HtmlT, ToHtml (toHtml), a_,
action_, class_, div_, em_, for_,
form_, h1_, h2_, h3_, href_, id_,
input_, label_, li_, main_,
method_, name_, ol_, placeholder_,
type_, ul_, value_)
import Servant (Capture, EmptyAPI, FormUrlEncoded,
Get, Handler, JSON,
NoContent (..), PlainText, Post,
Proxy (Proxy), QueryParam,
ReqBody, ServerError, err302,
err404, errHeaders, throwError,
type (:<|>) (..), type (:>))
import Servant.HTML.Lucid (HTML)
import Web.FormUrlEncoded (ToForm)
import Web.Internal.FormUrlEncoded (Form)
import Control.Monad (forM_)
import Control.Monad.Extra (maybeM, whenM)
import Data.Functor ((<&>))
import Data.Map (Map)
import Data.Pool (Pool)
import Data.Time (getCurrentTime, utctDay)
import Data.Time.Calendar (Day)
import Data.Time.Format.ISO8601 (iso8601Show)
import Data.UUID (UUID)
import qualified Data.UUID as UUID
import Database.Persist (Entity (..), delete, entityVal,
get, insert, selectList, (==.))
import Database.Persist.Sql (SqlBackend)
import GHC.Generics (Generic)
import Lucid.Forms (ToHtmlForm (..),
ToHtmlFormInput (..), formAction)
import Persist (Announcement (..),
EntityField (..), Key (..),
runSql)
import Server.Util (Service, redirect)
import Text.ProtocolBuffers (Default (defaultValue))
import Web.FormUrlEncoded (FromForm)
import GTFS
data TrainView = TrainView
{ tvDay :: Day
, tvTrip :: Trip Deep Deep
, tvAnnouncements :: [Entity Announcement]
, tvRunning :: Bool
} deriving Show
type ControlRoomAPI =
"main" :> QueryParam "day" Day :> Get '[HTML] (Day, Map TripID (Trip Deep Deep))
:<|> "train" :> Capture "tripID" TripID :> Capture "day" Day :> Get '[HTML] TrainView
:<|> ControlRoomCranks
-- | train infra seems to involve turning lots of cranks, so here have some!
type ControlRoomCranks =
"train" :> "cancel" :> ReqBody '[FormUrlEncoded] Form :> Post '[PlainText] NoContent
:<|> "train" :> "del-announce" :> Capture "uuid" UUID :> Get '[PlainText] NoContent
:<|> "train" :> "announce" :> Capture "tripId" TripID :> Capture "day" Day :> ReqBody '[FormUrlEncoded] TrainAnnounceF :> Post '[PlainText] NoContent
:<|> "train" :> "date" :> ReqBody '[FormUrlEncoded] Form :> Post '[PlainText] NoContent
:<|> "train" :> "delay" :> ReqBody '[FormUrlEncoded] Form :> Post '[PlainText] NoContent
:<|> "train" :> "metainfo" :> ReqBody '[FormUrlEncoded] Form :> EmptyAPI
:<|> "trip" :> "new" :> ReqBody '[FormUrlEncoded] Form :> EmptyAPI
data TrainAnnounceF = TrainAnnounceF
{ taHeader :: Text
, taMsg :: Text
, taLogTime :: Maybe Bool
} deriving (Generic, ToHtmlForm, FromForm)
controlRoomServer :: GTFS -> Pool SqlBackend -> Service ControlRoomAPI
controlRoomServer gtfs@GTFS{..} dbpool = handleTimetable :<|> handleTrip
:<|> controlRoomCranks dbpool
where handleTrip trip day = case M.lookup trip trips of
Just res -> do
as <- runSql dbpool
$ selectList [ AnnouncementTrip ==. trip, AnnouncementDay ==. day ] []
pure (TrainView day res as True) -- TODO: can't just assume it runs that day …
Nothing -> throwError err404
handleTimetable maybeDay = do
-- TODO: resolve "overlay" trips (perhaps just additional CalendarDates?)
day <- liftIO $ maybeM (getCurrentTime <&> utctDay) pure (pure maybeDay)
pure $ (day, tripsOnDay gtfs day)
controlRoomCranks :: Pool SqlBackend -> Service ControlRoomCranks
controlRoomCranks dbpool = undefined :<|> handleAnnounceDel :<|> handleAnnounce :<|> undefined
where handleAnnounce tripID day TrainAnnounceF{..} = do
now <- liftIO $ getCurrentTime
AnnouncementKey uuid <- runSql dbpool $ insert $ Announcement
{ announcementTrip = tripID
, announcementMessage = taMsg
, announcementHeader = taHeader
, announcementDay = day
, announcementUrl = Nothing
, announcementAnnouncedAt =
fmap (const now) taLogTime
}
redirect ("/cr/train/"<>C8.pack (T.unpack tripID)<>"/"<>C8.pack (iso8601Show day))
handleAnnounceDel uuid = do
ann <- runSql dbpool $ do
a <- get (AnnouncementKey uuid)
delete (AnnouncementKey uuid)
pure a
case ann of
Nothing -> throwError err404
Just Announcement{..} ->
redirect ("/cr/train/"<>C8.pack (T.unpack announcementTrip)<>"/"<>C8.pack (iso8601Show announcementDay))
instance ToHtmlFormInput CalendarExceptionType
instance ToHtmlForm CalendarDate
instance ToHtml TrainView where
toHtml (TrainView day Trip{..} as running) = crPage tripTripID $ do
unless running $ do
div_ [class_ "warning"] "Warning: Trip not running on this day!"
h2_ "Announcements"
ul_ $ do
unless (null as) $ forM_ as $ \(Entity (AnnouncementKey uuid) Announcement{..}) -> do
li_ $ do
em_ (toHtml announcementHeader); ": "; toHtml announcementMessage
" "; a_ [href_ $ "/cr/train/del-announce/"<>UUID.toText uuid] "delete"
li_ $ do
"Add Announcement:"
toHtmlForm (defaultValue {formAction = Just ("/cr/train/announce/"<>tripTripID<>"/"<>(T.pack . iso8601Show) day) })
(Proxy @TrainAnnounceF)
h2_ "Stops"
ol_ $ forM_ tripStops $ \Stop{..} -> do
div_ (toHtml (stationName stopStation))
h2_ "Vehicle Position"
div_ "todo!"
instance ToHtml (Day, Map TripID (Trip Deep Deep)) where
toHtml (day, trips) = crPage ("trips on " <> shownDay) $ do
ol_ $ forM_ trips $ \Trip{..} -> li_ $ do
a_ [href_ ("/cr/train/"<>tripTripID<>"/"<>shownDay)] (toHtml tripTripID)
when (null trips) $ do
em_ "(none)"
where shownDay = T.pack (iso8601Show day)
-- | control room page
crPage :: Monad m => Text -> HtmlT m () -> HtmlT m ()
crPage title content = do
h1_ (toHtml title)
main_ content
|
