app/Main.hs

@@ -37,17 +37,20 @@ findChoirDay today table = maybe
 main' :: App ()
 main' = do
   args <- liftIO getArgs
-  case args of
-    [] -> fail "Please provide a config file"
-    (headArgs : _) ->  do
+  case L.uncons args of
+    Nothing -> fail "We need exactly one config path as option"
+    Just (headArgs,_) ->  do
       config <- parseConfigFile headArgs
       -- we want to handle these while we have the config in scope
-      handleE (\error' -> reportErrorMail config error') $ do
+      result <- liftIO $ runApp $ do
         bs <- request
         table <- except $ parseBString bs
         today <- liftIO getToday
         record <- except $ findChoirDay today table
         send (mailDomain config) (mailUsername config) (mailPassword config) (mailTo config) (mailFrom config) (mailSubject record) (mailText record)
+      case result of
+        Right x -> return x
+        Left error' -> reportErrorMail config error'
 
 
 

app/Monad.hs

@@ -3,8 +3,6 @@ module Monad(
     App
   ,module Control.Monad.Fail
   ,module Control.Monad.IO.Class
-  ,handleE
-  ,catchE
   ,throwE
   ,except
   ,runApp
@@ -31,16 +29,6 @@ instance MonadFail App where
 throwE :: String -> App a
 throwE = App . T.throwE
 
-catchE :: App a -> (String -> App a) -> App a
-catchE a f = do
-  result <- liftIO $ runApp a
-  case result of
-    Left err  -> f err
-    Right res -> return res
-
-handleE :: (String -> App a) -> App a -> App a
-handleE = flip catchE
-
 except :: Either String a -> App a
 except = App . T.except
 

app/Sender.hs

@@ -1,32 +1,19 @@
 {-# LANGUAGE OverloadedStrings #-}
-module Sender
-  (generateMail
-  ,send
-  ) where
+module Sender where
   
 import Network.Mail.Mime
 import Network.Mail.SMTP
 import qualified Data.Text as ST
 import qualified Data.Text.Lazy as LT
 import Monad
-import Control.Monad.IO.Class
-import Data.Time.LocalTime (getZonedTime)
-import Data.Time.Format (TimeLocale, formatTime, defaultTimeLocale)
 
-rfc5322Format :: String
-rfc5322Format = "%a, %d %b %0Y %T %z"
 
-generateMail :: (MonadIO m) => ST.Text -> ST.Text -> ST.Text -> LT.Text -> m Mail
-generateMail to from subj body = do
-  time <- liftIO getZonedTime
-  let timeString = ST.pack $ formatTime defaultTimeLocale rfc5322Format time
-      mailWithoutDate = simpleMail' (Address Nothing to) (Address Nothing from) subj body
-      mailWithDate = mailWithoutDate {mailHeaders = ("Date",timeString) : mailHeaders mailWithoutDate}
-  return mailWithDate
+generateMail :: ST.Text -> ST.Text -> ST.Text -> LT.Text -> Mail
+generateMail to from subj = simpleMail' (Address Nothing to) (Address Nothing from) subj
 
 --     domain -> Username -> password -> To  -> From   -> Subject -> Body
 send :: (MonadIO m) => String -> String -> String -> ST.Text -> ST.Text -> ST.Text -> LT.Text -> m ()
-send domain user pass to from subj body = do
-  mail <- liftIO $ generateMail to from subj body
-  liftIO $ sendMailWithLoginTLS domain user pass mail
+send domain user pass to from subj body = liftIO $ sendMailWithLoginTLS domain user pass mail
+  where
+    mail = generateMail to from subj body
 

flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1749174413,
-        "narHash": "sha256-urN9UMK5cd1dzhR+Lx0xHeTgBp2MatA5+6g9JaxjuQs=",
+        "lastModified": 1746576598,
+        "narHash": "sha256-FshoQvr6Aor5SnORVvh/ZdJ1Sa2U4ZrIMwKBX5k2wu0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "6ad174a6dc07c7742fc64005265addf87ad08615",
+        "rev": "b3582c75c7f21ce0b429898980eddbbf05c68e55",
         "type": "github"
       },
       "original": {

flake.nix

@@ -62,7 +62,7 @@
                    });
                  in
                    pkgs.kakoune.override {
-                     plugins = with pkgs.kakounePlugins; [fzf-kak kakoune-lsp config];
+                     plugins = with pkgs.kakounePlugins; [fzf-kak kak-lsp config];
                    };
             in
               pkgs.mkShell {