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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.Aeson as A
import qualified Data.ByteString.Char8 as C8
import qualified Data.ByteString.Lazy as LB
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, addDays)
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, secondsNow)
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.Auth
import Yesod.Auth.OAuth2.Prelude
import Yesod.Form
import Config (ServerConfig (..), UffdConfig (..))
import Extrapolation (Extrapolator (..),
LinearExtrapolator (..))
import GTFS
import Numeric (showFFloat)
import Persist
import Yesod.Auth.OpenId (IdentifierType (..), authOpenId)
import Yesod.Auth.Uffd (UffdUser (..), uffdClient)
import Yesod.Orphans ()
data ControlRoom = ControlRoom
{ getGtfs :: GTFS
, getPool :: Pool SqlBackend
, getSettings :: ServerConfig
}
mkMessage "ControlRoom" "messages" "en"
mkYesod "ControlRoom" [parseRoutes|
/ RootR GET
/auth AuthR Auth getAuth
/trains TrainsR GET
/train/id/#TripID/#Day TrainViewR GET
/train/map/#TripID/#Day TrainMapViewR 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
/obu OnboardUnitMenuR GET
/obu/#TripID/#Day OnboardUnitR GET
|]
emptyMarkup :: MarkupM a -> Bool
emptyMarkup (Empty _) = True
emptyMarkup _ = False
instance Yesod ControlRoom where
authRoute _ = Just $ AuthR LoginR
isAuthorized OnboardUnitMenuR _ = pure Authorized
isAuthorized (OnboardUnitR _ _) _ = pure Authorized
isAuthorized (AuthR _) _ = pure Authorized
isAuthorized _ _ = do
UffdConfig{..} <- getYesod <&> getSettings <&> serverConfigLogin
if uffdConfigEnable then maybeAuthId >>= \case
Just _ -> pure Authorized
Nothing -> pure AuthenticationRequired
else pure Authorized
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}
<link rel="stylesheet" href="/assets/style.css">
<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
-- this instance is only slightly cursed (it keeps login information
-- as json in a session cookie and hopes nothing will ever go wrong)
instance YesodAuth ControlRoom where
type AuthId ControlRoom = UffdUser
authPlugins cr = case config of
UffdConfig {..} -> if uffdConfigEnable
then [ uffdClient uffdConfigUrl uffdConfigClientName uffdConfigClientSecret ]
else []
where config = serverConfigLogin (getSettings cr)
maybeAuthId = do
e <- lookupSession "json"
pure $ case e of
Nothing -> Nothing
Just extra -> A.decode (LB.fromStrict $ C8.pack $ T.unpack extra)
authenticate creds = do
forM_ (credsExtra creds) (uncurry setSession)
-- extra <- lookupSession "extra"
-- pure (Authenticated ( undefined))
e <- lookupSession "json"
case e of
Nothing -> error "no session information"
Just extra -> case A.decode (LB.fromStrict $ C8.pack $ T.unpack extra) of
Nothing -> error "malformed session information"
Just user -> pure $ Authenticated user
loginDest _ = RootR
logoutDest _ = RootR
-- hardcode redirecting to uffd directly; showing the normal login
-- screen is kinda pointless when there's only one option
loginHandler = do
redirect ("/auth/page/uffd/forward" :: Text)
onLogout = do
clearSession
getRootR :: Handler Html
getRootR = redirect TrainsR
getTrainsR :: Handler Html
getTrainsR = do
req <- getRequest
let maybeDay = lookup "day" (reqGetParams req) >>= (readMaybe . T.unpack)
mdisplayname <- maybeAuthId <&> fmap uffdDisplayName
(day, isToday) <- liftIO $ getCurrentTime <&> utctDay <&> \today ->
case maybeDay of
Just day -> (day, day == today)
Nothing -> (today, True)
let prevday = (T.pack . iso8601Show . addDays (-1)) day
let nextday = (T.pack . iso8601Show . addDays 1) day
gtfs <- getYesod <&> getGtfs
let trips = tripsOnDay gtfs day
defaultLayout $ do
[whamlet|
<h1> _{MsgTrainsOnDay (iso8601Show day)}
$maybe name <- mdisplayname
<p>_{MsgLoggedInAs name} - <a href="@{AuthR LogoutR}">_{MsgLogout}</a>
<nav>
<a class="nav-left" href="@?{(TrainsR, [("day", prevday)])}">← #{prevday}
$if isToday
_{Msgtoday}
$else
<a href="@{TrainsR}">_{Msgtoday}
<a class="nav-right" href="@?{(TrainsR, [("day", nextday)])}">#{nextday} →
<section>
<ol>
$forall trip@Trip{..} <- trips
<li><a href="@{TrainViewR tripTripID day}">_{MsgTrip} #{tripName trip}</a>
: _{Msgdep} #{stopDeparture (V.head tripStops)} #{stationName (stopStation (V.head tripStops))}
$if null trips
<li style="text-align: center"><em>(_{MsgNone})
|]
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}">#{tripName res}</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})
<p><a href="@{TrainMapViewR tripTripID day}">_{MsgMap}</a>
<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}">_{Msgdelete}</a>
$if null anns
<li><em>(_{MsgNone})</em>
<h3>_{MsgNewAnnouncement}
<form method=post action=@{AnnounceR trip day} enctype=#{enctype}>
^{widget}
<button>_{MsgSubmit}
<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
getTrainMapViewR :: TripID -> Day -> Handler Html
getTrainMapViewR tripId day = do
GTFS{..} <- getYesod <&> getGtfs
(widget, enctype) <- generateFormPost (announceForm day tripId)
case M.lookup tripId trips of
Nothing -> notFound
Just res@Trip{..} -> do defaultLayout [whamlet|
<h1>_{MsgTrip} <a href="@{TrainViewR tripTripID day}">#{tripName res} _{Msgon} #{day}</a>
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.3/dist/leaflet.css"
integrity="sha256-kLaT2GOSpHechhsozzB+flnD+zUyjE2LlfWPgU04xyI="
crossorigin=""/>
<script src="https://unpkg.com/leaflet@1.9.3/dist/leaflet.js"
integrity="sha256-WBkoXOwTeyKclOHuWtc+i2uENFpDZ9YPdf5Hf+D7ewM="
crossorigin=""></script>
<div id="map">
<p id="status">
<script>
let map = L.map('map');
L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
}).addTo(map);
ws = new WebSocket((location.protocol == "http:" ? "ws" : "wss") + "://" + location.host + "/api/train/subscribe/#{tripTripID}/#{day}");
var marker = null;
ws.onmessage = (msg) => {
let json = JSON.parse(msg.data);
if (marker === null) {
marker = L.marker([json.lat, json.long]);
marker.addTo(map);
} else {
marker.setLatLng([json.lat, json.long]);
}
map.setView([json.lat, json.long], 13);
document.getElementById("status").innerText = "_{MsgLastPing}: "+json.lat+","+json.long+" ("+json.timestamp+")";
}
|]
getTripsViewR :: Handler Html
getTripsViewR = do
GTFS{..} <- getYesod <&> getGtfs
defaultLayout $ do
setTitle "List of Trips"
[whamlet|
<h1>List of Trips
<section><ul>
$forall trip@Trip{..} <- trips
<li><a href="@{TripViewR tripTripID}">#{tripName trip}</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@Trip{..} -> defaultLayout [whamlet|
<h1>_{MsgTrip} #{tripName trip}
<section>
<h2>_{MsgInfo}
<p><strong>_{MsgtripId}:</strong> #{tripTripID}
<p><strong>_{MsgtripHeadsign}:</strong> #{mightbe tripHeadsign}
<p><strong>_{MsgtripShortname}:</strong> #{mightbe tripShortName}
<section>
<h2>_{MsgStops}
<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>_{MsgInvalidInput}.
<form method=post action=@{AnnounceR trip day} enctype=#{enctype}>
^{widget}
<button>_{MsgSubmit}
|]
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
getOnboardUnitMenuR :: Handler Html
getOnboardUnitMenuR = do
day <- liftIO getCurrentTime <&> utctDay
gtfs <- getYesod <&> getGtfs
let trips = tripsOnDay gtfs day
defaultLayout $ do
[whamlet|
<h1>_{MsgOBU}
<section>
_{MsgChooseTrain}
$forall Trip{..} <- trips
<hr>
<a href="@{OnboardUnitR tripTripID day}">
#{tripTripID}: #{stationName (stopStation (V.head tripStops))} #{stopDeparture (V.head tripStops)}
|]
getOnboardUnitR :: TripID -> Day -> Handler Html
getOnboardUnitR tripId day =
defaultLayout $(whamletFile "site/obu.hamlet")
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)
mightbe :: Maybe Text -> Text
mightbe (Just a) = a
mightbe Nothing = ""
|