From 403c2c7ade31861c36334f0185b644e38d2dd71f Mon Sep 17 00:00:00 2001
From: stuebinm
Date: Thu, 16 May 2024 22:07:35 +0200
Subject: new feature: Server.Frontend.Ticker

A simple way to have "announcements" available via API, and otherwise
distinct from the service announcements which show up in Gtfs Realtime.

These are meant to go e.g. be embedded on the operator's website, or in
other places where it's not as easy to display per-trip specific messages.
---
 lib/Server/Frontend.hs         |  1 +
 lib/Server/Frontend/Routes.hs  |  3 ++
 lib/Server/Frontend/Ticker.hs  | 63 ++++++++++++++++++++++++++++++++++++++++++
 lib/Server/Frontend/Tickets.hs |  5 ++++
 4 files changed, 72 insertions(+)
 create mode 100644 lib/Server/Frontend/Ticker.hs

(limited to 'lib/Server')

diff --git a/lib/Server/Frontend.hs b/lib/Server/Frontend.hs
index cec4fa7..a9c2f69 100644
--- a/lib/Server/Frontend.hs
+++ b/lib/Server/Frontend.hs
@@ -6,6 +6,7 @@ import           Server.Frontend.Gtfs
 import           Server.Frontend.OnboardUnit
 import           Server.Frontend.Routes
 import           Server.Frontend.SpaceTime
+import           Server.Frontend.Ticker
 import           Server.Frontend.Tickets
 
 import           Yesod
diff --git a/lib/Server/Frontend/Routes.hs b/lib/Server/Frontend/Routes.hs
index 8dceda5..18cf0a1 100644
--- a/lib/Server/Frontend/Routes.hs
+++ b/lib/Server/Frontend/Routes.hs
@@ -45,6 +45,9 @@ mkYesodData "Frontend" [parseRoutes|
 /ticket/announce/#UUID AnnounceR POST
 /ticket/del-announce/#UUID DelAnnounceR GET
 
+/ticker/announce TickerAnnounceR POST
+/ticker/delete TickerDeleteR POST
+
 /spacetime SpaceTimeDiagramR GET
 
 /token/block/#Token TokenBlock GET
diff --git a/lib/Server/Frontend/Ticker.hs b/lib/Server/Frontend/Ticker.hs
new file mode 100644
index 0000000..8861daa
--- /dev/null
+++ b/lib/Server/Frontend/Ticker.hs
@@ -0,0 +1,63 @@
+{-# LANGUAGE QuasiQuotes #-}
+
+module Server.Frontend.Ticker (tickerWidget, postTickerAnnounceR, postTickerDeleteR) where
+import           Data.Functor           ((<&>))
+import           Data.Time              (getCurrentTime)
+import           Persist                (EntityField (TickerAnnouncementArchived),
+                                         TickerAnnouncement (..))
+import           Server.Frontend.Routes (FrontendMessage (..), Handler,
+                                         Route (..), Widget)
+import           Yesod
+
+
+tickerAnnounceForm
+  :: Maybe TickerAnnouncement
+  -> Html
+  -> MForm Handler (FormResult TickerAnnouncement, Widget)
+tickerAnnounceForm maybeCurrent = renderDivs $ TickerAnnouncement
+  <$> areq textField (fieldSettingsLabel MsgHeader)
+        (maybeCurrent <&> tickerAnnouncementHeader)
+  <*> fmap unTextarea (areq textareaField (fieldSettingsLabel MsgText)
+        (maybeCurrent <&> (Textarea . tickerAnnouncementMessage)))
+  <*> pure False
+  <*> lift (liftIO getCurrentTime)
+
+tickerWidget :: Handler Html
+tickerWidget = do
+  current <- runDB $ selectFirst [ TickerAnnouncementArchived ==. False ] []
+
+  (widget, enctype) <-
+    generateFormPost (tickerAnnounceForm (current <&> entityVal))
+
+  defaultLayout [whamlet|
+     <h2>_{MsgTicker}
+     <form method=post action=@{TickerAnnounceR} enctype=#{enctype}>
+       ^{widget}
+       <button>_{MsgSubmit}
+     <form method=post action=@{TickerDeleteR}>
+       <button>_{Msgdelete}
+  |]
+
+postTickerAnnounceR :: Handler Html
+postTickerAnnounceR = do
+  current <- runDB $ selectFirst [ TickerAnnouncementArchived ==. False ] []
+  ((result, widget), enctype) <-
+    runFormPost (tickerAnnounceForm (current <&> entityVal))
+  case result of
+    FormSuccess ann -> do
+      runDB $ do
+        updateWhere [] [ TickerAnnouncementArchived =. True ]
+        insert ann
+      redirect RootR
+    _ -> defaultLayout
+        [whamlet|
+            <p>_{MsgInvalidInput}.
+            <form method=post action=@{TickerAnnounceR} enctype=#{enctype}>
+                ^{widget}
+                <button>_{MsgSubmit}
+        |]
+
+postTickerDeleteR :: Handler Html
+postTickerDeleteR = do
+  runDB $ updateWhere [] [ TickerAnnouncementArchived =. True ]
+  redirect RootR
diff --git a/lib/Server/Frontend/Tickets.hs b/lib/Server/Frontend/Tickets.hs
index 1f4ad3f..9b88a48 100644
--- a/lib/Server/Frontend/Tickets.hs
+++ b/lib/Server/Frontend/Tickets.hs
@@ -45,6 +45,7 @@ import           Numeric                   (showFFloat)
 import           Persist
 import           Server.Frontend.SpaceTime (mkSpaceTimeDiagram,
                                             mkSpaceTimeDiagramHandler)
+import           Server.Frontend.Ticker    (tickerWidget)
 import           Server.Util               (Service, secondsNow)
 import           Text.Read                 (readMaybe)
 import           Yesod
@@ -77,6 +78,8 @@ getTicketsR = do
 
   let trips = GTFS.tripsOnDay gtfs day
 
+  tickerAnnounceWidget <- tickerWidget
+
   (widget, enctype) <- generateFormPost (tripImportForm (fmap (,day) (M.elems trips)))
   defaultLayout $ do
     [whamlet|
@@ -90,6 +93,8 @@ $maybe name <- mdisplayname
   $else
     <a href="@{TicketsR}">_{Msgtoday}
   <a class="nav-right" href="@?{(TicketsR, [("day", nextday)])}">#{nextday} →
+<section>
+  ^{tickerAnnounceWidget}
 <section>
   <h2>_{MsgTickets}
   <ol>
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