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|
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DefaultSignatures #-}
{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
module Server.ControlRoom (ControlRoom(..)) where
import Control.Monad (forM_, join)
import Control.Monad.Extra (maybeM)
import Control.Monad.IO.Class (MonadIO (liftIO))
import qualified Data.ByteString.Char8 as C8
import Data.Functor ((<&>))
import Data.List (lookup)
import Data.List.NonEmpty (nonEmpty)
import Data.Map (Map)
import qualified Data.Map as M
import Data.Pool (Pool)
import Data.Text (Text)
import qualified Data.Text as T
import Data.Time (UTCTime (..), getCurrentTime,
utctDay)
import Data.Time.Calendar (Day)
import Data.Time.Format.ISO8601 (iso8601Show)
import Data.UUID (UUID)
import qualified Data.UUID as UUID
import qualified Data.Vector as V
import Database.Persist (Entity (..), delete, entityVal, get,
insert, selectList, (==.))
import Database.Persist.Sql (PersistFieldSql, SqlBackend,
runSqlPool)
import Fmt ((+|), (|+))
import GHC.Float (int2Double)
import GHC.Generics (Generic)
import Server.Util (Service)
import Text.Blaze.Html (ToMarkup (..))
import Text.Blaze.Internal (MarkupM (Empty))
import Text.ProtocolBuffers (Default (defaultValue))
import Text.Read (readMaybe)
import Text.Shakespeare.Text
import Yesod
import Yesod.Form
import Extrapolation (Extrapolator (..),
LinearExtrapolator, secondsNow)
import GTFS
import Numeric (showFFloat)
import Persist
data ControlRoom = ControlRoom
{ getGtfs :: GTFS
, getPool :: Pool SqlBackend
}
mkMessage "ControlRoom" "messages" "en"
mkYesod "ControlRoom" [parseRoutes|
/ RootR GET
/trains TrainsR GET
/train/id/#TripID/#Day TrainViewR GET
/train/announce/#TripID/#Day AnnounceR POST
/train/del-announce/#UUID DelAnnounceR GET
/token/block/#Token TokenBlock GET
/trips TripsViewR GET
/trip/#TripID TripViewR GET
|]
emptyMarkup :: MarkupM a -> Bool
emptyMarkup (Empty _) = True
emptyMarkup _ = False
instance Yesod ControlRoom where
defaultLayout w = do
PageContent{..} <- widgetToPageContent w
msgs <- getMessages
withUrlRenderer [hamlet|
$newline never
$doctype 5
<html>
<head>
<title>
$if emptyMarkup pageTitle
Tracktrain
$else
#{pageTitle}
$maybe description <- pageDescription
<meta name="description" content="#{description}">
^{pageHead}
<style>
section {
border: 1px solid black;
padding: 1rem;
margin: 2rem;
padding-top: 0;
}
body {
max-width: 50rem;
margin: auto;
}
form {
width:100%;
display: grid;
gap: 1rem;
}
label {
grid-column: 1;
}
form div {
display: grid;
grid-template-columns: 50% 50%;
width:100%;
}
input {
grid-column: 2;
}
.blocked {
background-color: red;
}
<body>
$forall (status, msg) <- msgs
<p class="message #{status}">#{msg}
^{pageBody}
|]
instance RenderMessage ControlRoom FormMessage where
renderMessage _ _ = defaultFormMessage
instance YesodPersist ControlRoom where
type YesodPersistBackend ControlRoom = SqlBackend
runDB action = do
pool <- getYesod <&> getPool
runSqlPool action pool
getRootR :: Handler Html
getRootR = redirect TrainsR
getTrainsR :: Handler Html
getTrainsR = do
req <- getRequest
let maybeDay = lookup "day" (reqGetParams req) >>= (readMaybe . T.unpack)
day <- liftIO $ maybeM (getCurrentTime <&> utctDay) pure (pure maybeDay)
gtfs <- getYesod <&> getGtfs
let trips = tripsOnDay gtfs day
defaultLayout $ do
[whamlet|
<h1>Trains on #{day}
<section><ol>
$forall Trip{..} <- trips
<li><a href="@{TrainViewR tripTripID day}">#{tripTripID}</a>
: #{stopDeparture (V.head tripStops)} #{stationName (stopStation (V.head tripStops))}
|]
getTrainViewR :: TripID -> Day -> Handler Html
getTrainViewR trip day = do
GTFS{..} <- getYesod <&> getGtfs
(widget, enctype) <- generateFormPost (announceForm day trip)
case M.lookup trip trips of
Nothing -> notFound
Just res@Trip{..} -> do
anns <- runDB $ selectList [ AnnouncementTrip ==. trip, AnnouncementDay ==. day ] []
tokens <- runDB $ selectList [ RunningTrip ==. trip, RunningDay ==. day ] [Asc RunningExpires]
lastPing <- runDB $ selectFirst [ TrainPingToken <-. fmap entityKey tokens ] [Desc TrainPingTimestamp]
anchors <- runDB $ selectList [ TrainAnchorTrip ==. trip, TrainAnchorDay ==. day ] []
<&> nonEmpty . (fmap entityVal)
nowSeconds <- secondsNow day
defaultLayout $ do
mr <- getMessageRender
setTitle (toHtml (""+|mr MsgTrip|+" "+|tripTripID|+" "+|mr Msgon|+" "+|day|+"" :: Text))
[whamlet|
<h1>_{MsgTrip} <a href="@{TripViewR tripTripID}">#{tripTripID}</a> _{Msgon} <a href="@?{(TrainsR, [("day", T.pack (iso8601Show day))])}">#{day}</a>
<section>
<h2>_{MsgLive}
<p><strong>_{MsgLastPing}: </strong>
$maybe Entity _ TrainPing{..} <- lastPing
_{MsgTrainPing trainPingLat trainPingLong trainPingTimestamp}
(<a href="/api/debug/pings/#{trip}/#{day}">_{Msgraw}</a>)
$nothing
<em>(_{MsgNoTrainPing})
<p><strong>_{MsgEstimatedDelay}</strong>:
$maybe history <- anchors
$maybe TrainAnchor{..} <- guessAtSeconds history nowSeconds
\ #{trainAnchorDelay} (_{MsgOnStationSequence (showFFloat (Just 3) trainAnchorSequence "")})
$nothing
<em> (_{MsgNone})
<section>
<h2>_{MsgStops}
<ol>
$forall Stop{..} <- tripStops
<li value="#{stopSequence}"> #{stopArrival} #{stationName stopStation}
$maybe history <- anchors
$maybe delay <- guessDelay history (int2Double stopSequence)
\ (#{delay})
<section>
<h2>_{MsgAnnouncements}
<ul>
$forall Entity (AnnouncementKey uuid) Announcement{..} <- anns
<li><em>#{announcementHeader}: #{announcementMessage}</em> <a href="@{DelAnnounceR uuid}">delete</a>
$if null anns
<li><em>(_{MsgNone})</em>
<h3>_{MsgNewAnnouncement}
<form method=post action=@{AnnounceR trip day} enctype=#{enctype}>
^{widget}
<button>Submit
<section>
<h2>_{MsgTokens}
<table>
<tr><th style="width: 20%">_{MsgAgent}</th><th style="width: 50%">_{MsgToken}</th><th>_{MsgExpires}</th><th>_{MsgStatus}</th>
$if null tokens
<tr><td></td><td style="text-align:center"><em>(_{MsgNone})
$forall Entity (RunningKey key) Running{..} <- tokens
<tr :runningBlocked:.blocked>
<td title="#{runningAgent}">#{runningAgent}
<td title="#{key}">#{key}
<td title="#{runningExpires}">#{runningExpires}
$if runningBlocked
<td title="_{MsgUnblockToken}"><a href="@?{(TokenBlock key, [("unblock", "true")])}">_{MsgUnblockToken}</a>
$else
<td title="_{MsgBlockToken}"><a href="@{TokenBlock key}">_{MsgBlockToken}</a>
|]
where guessDelay history = fmap trainAnchorDelay . extrapolateAtPosition @LinearExtrapolator history
guessAtSeconds = extrapolateAtSeconds @LinearExtrapolator
getTripsViewR :: Handler Html
getTripsViewR = do
GTFS{..} <- getYesod <&> getGtfs
defaultLayout $ do
setTitle "List of Trips"
[whamlet|
<h1>List of Trips
<section><ul>
$forall Trip{..} <- trips
<li><a href="@{TripViewR tripTripID}">#{tripTripID}</a>
: #{stopDeparture (V.head tripStops)} #{stationName (stopStation (V.head tripStops))}
|]
getTripViewR :: TripID -> Handler Html
getTripViewR tripId = do
GTFS{..} <- getYesod <&> getGtfs
case M.lookup tripId trips of
Nothing -> notFound
Just Trip{..} -> defaultLayout [whamlet|
<h1>Trip #{tripTripID}
<section>
<h2>Stops
<ol>
$forall Stop{..} <- tripStops
<div>(#{stopSequence}) #{stopArrival} #{stationName stopStation}
<section>
<h2>Dates
<ul>
TODO!
|]
postAnnounceR :: TripID -> Day -> Handler Html
postAnnounceR trip day = do
((result, widget), enctype) <- runFormPost (announceForm day trip)
case result of
FormSuccess ann -> do
runDB $ insert ann
redirect (TrainViewR trip day)
_ -> defaultLayout
[whamlet|
<p>Invalid input, let's try again.
<form method=post action=@{AnnounceR trip day} enctype=#{enctype}>
^{widget}
<button>Submit
|]
getDelAnnounceR :: UUID -> Handler Html
getDelAnnounceR uuid = do
ann <- runDB $ do
a <- get (AnnouncementKey uuid)
delete (AnnouncementKey uuid)
pure a
case ann of
Nothing -> notFound
Just Announcement{..} ->
redirect (TrainViewR announcementTrip announcementDay)
getTokenBlock :: Token -> Handler Html
getTokenBlock token = do
YesodRequest{..} <- getRequest
let blocked = lookup "unblock" reqGetParams /= Just "true"
maybe <- runDB $ do
update (RunningKey token) [ RunningBlocked =. blocked ]
get (RunningKey token)
case maybe of
Just r@Running{..} -> do
liftIO $ print r
redirect (TrainViewR runningTrip runningDay)
Nothing -> notFound
announceForm :: Day -> TripID -> Html -> MForm Handler (FormResult Announcement, Widget)
announceForm day tripId = renderDivs $ Announcement
<$> pure tripId
<*> areq textField (fieldSettingsLabel MsgHeader) Nothing
<*> areq textField (fieldSettingsLabel MsgText) Nothing
<*> pure day
<*> aopt urlField (fieldSettingsLabel MsgMaybeWeblink) Nothing
<*> lift (liftIO getCurrentTime <&> Just)
--- some orphans to make hamlet easier to deal with
instance ToMarkup Time where
toMarkup time =
toMarkup (show time)
instance ToMarkup Day where
toMarkup day = toMarkup (iso8601Show day)
instance ToMessage UTCTime where
toMessage = formatW3
instance ToMessage Token where
toMessage (Token uuid) = UUID.toText uuid
instance ToMarkup UTCTime where
toMarkup = toMarkup . formatW3
instance ToMarkup Token where
toMarkup (Token uuid) = toMarkup (UUID.toText uuid)
instance ToMessage Double where
toMessage = T.pack . show
instance ToMarkup Seconds where
toMarkup (Seconds s) =
if s > 0 then toMarkup ("+"+|s `div` 60|+"" :: Text)
else toMarkup (s `div` 60)
|
