Emit Settings on startup for debugging

src/Application.hs

@@ -114,9 +114,10 @@ makeFoundation appSettings@(AppSettings{..}) = do
         logFunc = messageLoggerSource tempFoundation appLogger
 
     flip runLoggingT logFunc $ do
-      smtpPool <- traverse createSmtpPool appSmtpConf
-  
       $logDebugS "InstanceID" $ UUID.toText appInstanceID
+      $logDebugS "Configuration" $ tshow appSettings
+
+      smtpPool <- traverse createSmtpPool appSmtpConf
 
       -- Create the database connection pool
       sqlPool <- createPostgresqlPool

src/Settings.hs

@@ -104,7 +104,7 @@ data AppSettings = AppSettings
 
     , appCryptoIDKeyFile        :: FilePath
     , appInstanceIDFile         :: Maybe FilePath
-    }
+    } deriving (Show)
   
 data UserDefaultConf = UserDefaultConf
   { userDefaultTheme :: Theme
@@ -118,6 +118,9 @@ data PWHashConf = PWHashConf
   , pwHashStrength :: Int
   }
 
+instance Show PWHashConf where
+  show PWHashConf{..} = "PWHashConf { pwHashStrength = " <> show pwHashStrength <> ", .. }"
+
 instance FromJSON PWHashConf where
   parseJSON = withObject "PWHashConf" $ \o -> do
     pwHashAlgorithm' <- (o .: "algorithm" :: Aeson.Parser Text)
@@ -209,11 +212,14 @@ deriveFromJSON
     }
   ''HaskellNet.AuthType
 
-deriveFromJSON
+instance FromJSON SmtpConf where
-  defaultOptions
+  parseJSON = withObject "SmtpConf" $ \o -> do
-    { fieldLabelModifier = intercalate "-" . map toLower . drop 1 . splitCamel
+    smtpHost <- o .: "host"
-    }
+    smtpPort <- o .: "port"
-  ''SmtpConf
+    smtpAuth <- assertM (not . null . smtpAuthUsername) <$> o .:? "auth"
+    smtpSsl <- o .: "ssl"
+    smtpPool <- o .: "pool"
+    return SmtpConf{..}
 
 deriveFromJSON
   defaultOptions