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{-# LANGUAGE ApplicativeDo #-}
{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE ViewPatterns #-}
{-# LANGUAGE NoFieldSelectors #-}

module Main where

import Collection
import ACMS.API.REST.Collection qualified
import Control.Applicative ((<**>))
import Data.Aeson qualified as J
import Data.Aeson.Encode.Pretty qualified as J
import Data.ByteString.Lazy qualified as LB
import Data.Text qualified as T
import Options.Applicative qualified as O
import Text.ParserCombinators.ReadP qualified as R
import Text.ParserCombinators.ReadPrec qualified as R
import Text.Read (Read (..))
import Debug.Trace

newtype Args = Args
  { cmd :: Cmd
  }

args :: O.Parser Args
args = Args <$> cmd_

data Cmd = CollectionCmd CollectionCmd

cmd_ :: O.Parser Cmd
cmd_ =
  O.hsubparser . mconcat $
    [ O.command "collection" . O.info collectionCmd $
        O.progDesc "Manage content collections"
    ]

data CollectionCmd
  = CollectionAdd Collection
  | CollectionView CollectionItem
  | CollectionEdit CollectionItem
  | CollectionDelete CollectionItem
  | --
    CollectionSchema Collection

collectionCmd :: O.Parser Cmd
collectionCmd = do
  fmap CollectionCmd . O.hsubparser . mconcat $
    [ O.command "add" . O.info (CollectionAdd <$> collectionArg) $
        O.progDesc "Add an entity",
      O.command "view" . O.info (CollectionView <$> collectionItemArg) $
        O.progDesc "View an entity",
      O.command "edit" . O.info (CollectionEdit <$> collectionItemArg) $
        O.progDesc "Edit an entity",
      O.command "delete" . O.info (CollectionDelete <$> collectionItemArg) $
        O.progDesc "Delete an entity",
      --
      O.command "schema" . O.info (CollectionSchema <$> collectionArg) $
        O.progDesc "Show the collection's schema"
    ]

collectionItemArg :: O.Parser CollectionItem
collectionItemArg =
  O.argument O.auto (O.metavar "COLLECTION_PATH")

collectionArg :: O.Parser Collection
collectionArg =
  Collection . T.pack <$> O.strArgument (O.metavar "COLLECTION_NAME")

main :: IO ()
main =
  O.execParser (O.info (args <**> O.helper) O.idm) >>= \case
    Args
      { cmd = CollectionCmd cmd
      } -> case cmd of
        CollectionAdd collection -> do
          LB.putStr . J.encodePretty
            =<< ACMS.API.REST.Collection.create collection
            =<< J.throwDecode
            =<< LB.getContents
        CollectionView collectionItem ->
          LB.putStr . J.encodePretty
            =<< ACMS.API.REST.Collection.read collectionItem
        CollectionDelete collectionItem ->
          LB.putStr . J.encodePretty
            =<< ACMS.API.REST.Collection.delete collectionItem
        CollectionEdit collectionItem ->
          LB.putStr . J.encodePretty
            =<< ACMS.API.REST.Collection.update collectionItem
            =<< J.throwDecode
            =<< LB.getContents
        CollectionSchema collection ->
          LB.putStr . J.encodePretty @J.Value
            =<< ACMS.API.REST.Collection.schema collection