Fixed some bugs and added some stuff

app/Commands.hs

@@ -7,7 +7,7 @@ import Discord              ( restCall, DiscordHandler )
 import Discord.Types        ( ChannelId
                             , User(..)
                             , GuildMember(..)
-                            , GuildId
+                            , GuildId, UTCTime, Snowflake
                             )
 import Discord.Interactions ( interactionResponseBasic
                             , createApplicationCommandChatInput
@@ -116,6 +116,13 @@ remindCommand =
         ]
     }
 
+data Remind = Remind { rmdWhen :: UTCTime
+                     , rmdWhat :: T.Text
+                     , rmdWhere :: Snowflake
+                     , rmdWho :: Snowflake 
+                     }
+  deriving (Read, Show, Eq)
+
 remindResponse :: Maybe InteractionDataApplicationCommandOptions
                -> EventSystem
                -> ChannelId
@@ -127,7 +134,7 @@ remindResponse (Just (InteractionDataApplicationCommandOptionsValues opts)) evts
         MemberOrUser (Right User{userId = uid}) -> uid
         _ -> error "Couldnt get user id"
   let d = delay'
-  now <- liftIO $ getCurrentTime
+  now <- liftIO getCurrentTime
   let remindDateTime =
         case T.last d of
           's' -> addUTCTime ( fromInteger
@@ -169,6 +176,7 @@ remindResponse (Just (InteractionDataApplicationCommandOptionsValues opts)) evts
                       )
               return ()
           )
+        liftIO $ appendFile "reminds.data" $ show (Remind remindDateTime message ch userid) ++ "\n"
         return
           $ interactionResponseBasic
           $ "Reminder registered sucessfully for "
@@ -239,3 +247,17 @@ groupResponse c
 groupResponse _ _ _ _ =
   return $ interactionResponseBasic
   "the group command has mandatory params, yet you managed not to give any, WOW"
+
+helpCommand :: Maybe CreateApplicationCommand
+helpCommand =
+  createApplicationCommandChatInput
+    "help"
+    "help"
+
+helpResponse :: IO InteractionResponse
+helpResponse = return . interactionResponseBasic
+  $ "**__Help for Bot IUT__**\n\n"
+  `T.append` "`/help` shows this help message\n"
+  `T.append` "`/group <group>` join a group\n"
+  `T.append` "`/remind <time><s|m|h|d> <message>` reminds you of something in the future\n"
+  `T.append` "`/edt <group> [week|today|tomorrow|dd/mm/yyyy]` get the planning for group `group` on `day` (`day` defaults to `week`)"

app/Commands/EDT.hs

@@ -37,7 +37,9 @@ getEdt conf@Config{..} opts = do
   tz <- DT.getTimeZone
     $ DT.UTCTime (head dates)
     $ DT.secondsToDiffTime 43200
-  let message = case cal of
+  let
+    message =
+      case cal of
         Left _ -> "I don't know this group, alternatively ADE doesn't work"
         Right (vcal@IT.VCalendar{IT.vcEvents = evm}:_, _) ->
           TS.unlines . map (\d ->
@@ -46,7 +48,7 @@ getEdt conf@Config{..} opts = do
                                 `TS.append` TS.pack (show d)
                                 `TS.append` "**\n"
                                 `TS.append` renderEvents tz (ev d)
-                              else ""
+                              else "No classes for the selected dates"
                            )
           $ dates
           where

app/Main.hs

@@ -26,7 +26,10 @@ import           Discord.Interactions    ( interactionResponseBasic
 import qualified Discord.Requests     as R
 import           Commands                ( edtResponse, edtCommand
                                          , pingResponse, pingCommand
-                                         , remindResponse, remindCommand, groupCommand, groupResponse
+                                         , remindResponse, remindCommand
+                                         , groupCommand, groupResponse
+                                         , helpCommand, helpResponse
+                                         , Remind(..)
                                          )
 import           Conf                    ( Config(..), Group(..), readConfig )
 import qualified System.Cron.Schedule as Cron
@@ -34,16 +37,17 @@ import qualified Data.Map.Strict      as Map
 import           Commands.EDT            (getEdt)
 import qualified Control.Concurrent
 import qualified Control.Event        as E
-
+import UnliftIO.Directory (doesFileExist, removeFile)
 
 main :: IO ()
 main = do
   tok <- TIO.readFile "./auth.secret"
   conf <- readConfig "./conf.yaml"
   eventSystem <- E.initEventSystem
-  print conf
+  
+    
   err <- runDiscord $ def { discordToken = tok
-                          , discordOnStart = onDiscordStart conf
+                          , discordOnStart = onDiscordStart conf eventSystem
                           , discordOnEnd = liftIO $ putStrLn "Ended"
                           , discordOnEvent = onDiscordEvent conf eventSystem
                           , discordOnLog =
@@ -51,8 +55,8 @@ main = do
                           }
   TIO.putStrLn err
 
-onDiscordStart :: Config -> DiscordHandler ()
-onDiscordStart conf = do
+onDiscordStart :: Config -> E.EventSystem  -> DiscordHandler ()
+onDiscordStart conf eventSystem = do
   let
     activity :: Activity
     activity = def { activityName = "Doing stuff"
@@ -66,6 +70,26 @@ onDiscordStart conf = do
                             , updateStatusOptsAFK = False
                             }
   sendCommand (UpdateStatus opts)
+  remindDataExist <- liftIO $ doesFileExist "reminds.data"
+  when remindDataExist $ do
+    remindfile <- liftIO $ readFile "reminds.data"
+    let reminddata :: [Remind]
+        reminddata = map read $ lines remindfile
+    mapM_ (\r -> do
+             withRunInIO $ \runInIO ->
+               E.addEvent eventSystem (rmdWhen r)
+               ( do
+                   runInIO ( restCall
+                             $ R.CreateMessage (rmdWhere r)
+                             $ "<@"
+                             `T.append` T.pack (show $rmdWho r)
+                             `T.append` "> **Reminder**\n"
+                             `T.append` rmdWhat r
+                           )
+                   return ()
+               )
+          )  reminddata
+    liftIO $ removeFile "reminds.data"
 
 
 onDiscordEvent :: Config -> E.EventSystem -> Event -> DiscordHandler ()
@@ -80,6 +104,7 @@ onDiscordEvent conf@Config{..} eventSystem (Ready _ _ _ _ _ _ (PartialApplicatio
         , edtCommand conf
         , remindCommand
         , groupCommand conf
+        , helpCommand
         ]
   let glist = Map.toList configGroups
   withRunInIO $ \runInIO -> Cron.execSchedule $ do
@@ -113,6 +138,7 @@ onDiscordEvent conf@Config{..} eventSystem
         "edt" -> liftIO $ edtResponse conf opts
         "remind" -> remindResponse opts eventSystem channel user
         "group" -> groupResponse conf user guild opts
+        "help" -> liftIO helpResponse 
         _ -> return $ interactionResponseBasic $ "Unhandled Command: " `T.append` name
 onDiscordEvent _ _ _ = return ()