cli: add CRUD operations for collections

cli/app/Main.hs

@@ -4,6 +4,7 @@
 {-# LANGUAGE RecordWildCards #-}
 {-# LANGUAGE ViewPatterns #-}
 {-# LANGUAGE NoFieldSelectors #-}
+{-# LANGUAGE ApplicativeDo #-}
 
 module Main where
 
@@ -24,7 +25,10 @@ data Args = Args
 args :: O.Parser Args
 args = Args <$> cmd_
 
-data Cmd = Collection CollectionCmd
+data Cmd = Collection
+  { operation :: CollectionCmd
+  , filePath :: CollectionPath
+  }
 
 cmd_ :: O.Parser Cmd
 cmd_ =
@@ -33,9 +37,7 @@ cmd_ =
         O.progDesc "Manage content collections"
     ]
 
-data CollectionCmd = CollectionAdd
-  { filePath :: CollectionPath
-  }
+data CollectionCmd = CollectionAdd | CollectionView | CollectionEdit | CollectionDelete
 
 data CollectionPath = CollectionPath
   { collectionName :: T.Text,
@@ -57,32 +59,47 @@ instance Show CollectionPath where
     show (collectionName <> "/" <> fileName)
 
 collectionCmd :: O.Parser Cmd
-collectionCmd =
-  fmap Collection . O.hsubparser . mconcat $
-    [ O.command "add" . O.info collectionAddCmd $
+collectionCmd = do
+  operation <- O.hsubparser $ mconcat $
+    [ O.command "add" . O.info (pure CollectionAdd) $
         O.progDesc "Add an entity"
+    , O.command "view" . O.info (pure CollectionView) $
+        O.progDesc "View an entity"
+    , O.command "edit" . O.info (pure CollectionEdit) $
+        O.progDesc "Edit an entity"
+    , O.command "delete" . O.info (pure CollectionDelete) $
+        O.progDesc "Delete an entity"
     ]
-
-collectionAddCmd :: O.Parser CollectionCmd
-collectionAddCmd =
-  CollectionAdd
-    <$> collectionPathArg
+  filePath <- collectionPathArg
+  pure $ Collection {..}
 
 collectionPathArg :: O.Parser CollectionPath
 collectionPathArg =
   O.argument O.auto (O.metavar "COLLECTION_PATH")
 
 main :: IO ()
-main = do
+main =
   O.execParser (O.info (args <**> O.helper) O.idm) >>= \case
     Args
       { cmd =
           Collection
-            CollectionAdd
-              { filePath = CollectionPath {collectionName, fileName}
+            { operation = operation
+            , filePath = CollectionPath {collectionName, fileName}
             }
-      } ->
+      } -> case operation of
+        CollectionAdd ->
           print
             =<< ACMS.API.REST.Collection.create collectionName fileName
             =<< J.throwDecode
             =<< LB.getContents
+        CollectionView ->
+          print
+            =<< ACMS.API.REST.Collection.read collectionName fileName
+        CollectionDelete ->
+          print
+            =<< ACMS.API.REST.Collection.delete collectionName fileName
+        CollectionEdit ->
+          print
+            =<< ACMS.API.REST.Collection.update collectionName fileName
+            =<< J.throwDecode
+            =<< LB.getContents