module Main (main) where

import Data.Sequence (Seq)
import qualified Data.Sequence as Seq
import Data.Text (Text, pack, unpack, unwords)
import Monomer
import Monomer.Hagrid
import Paths_monomer_flatpak_example (getDataFileName)
import System.Directory (getCurrentDirectory, getHomeDirectory, listDirectory)
import Prelude hiding (unwords)

data AppModel = AppModel
  { environmentInfos :: Seq EnvironmentInfo
  }
  deriving (Eq, Show)

data EnvironmentInfo = EnvironmentInfo
  { key :: Text,
    value :: Text
  }
  deriving (Eq, Show)

data AppEvent
  = AppInit
  | AppInitFinish (Seq EnvironmentInfo)

main :: IO ()
main = do
  regularFontPath <- pack <$> getDataFileName "/fonts/Cantarell/Cantarell-Regular.ttf"
  startApp initialModel handleEvent buildUI (config regularFontPath)
  where
    initialModel = AppModel {environmentInfos = mempty}
    config regularFontPath =
      [ appTheme darkTheme,
        appWindowTitle "Monomer Flatpak Example",
        appFontDef "Regular" regularFontPath,
        appDisableAutoScale True,
        appInitEvent AppInit
      ]

buildUI :: UIBuilder AppModel AppEvent
buildUI _wenv model =
  vstack
    [ label "This is a demo of the monomer framework running inside the Flatpak sandbox."
        `styleBasic` [padding 10],
      hagrid
        [ (textColumn "Environment Property" (.key)) {initialWidth = 200},
          (textColumn "Value" (.value)) {initialWidth = 600}
        ]
        model.environmentInfos
    ]

handleEvent :: EventHandler AppModel AppEvent sp ep
handleEvent _wenv _node model = \case
  AppInit ->
    [ Task $ do
        curDir <- pack <$> getCurrentDirectory
        homeDir <- pack <$> getHomeDirectory
        lsRoot <- unwords . fmap pack <$> listDirectory "/"
        lsCurDir <- unwords . fmap pack <$> listDirectory (unpack curDir)
        lsHomeDir <- unwords . fmap pack <$> listDirectory (unpack homeDir)
        pure $
          AppInitFinish
            ( Seq.fromList
                [ EnvironmentInfo "Current Directory" curDir,
                  EnvironmentInfo "Home Directory" homeDir,
                  EnvironmentInfo "ls /" lsRoot,
                  EnvironmentInfo ("ls " <> curDir) lsCurDir,
                  EnvironmentInfo ("ls " <> homeDir) lsHomeDir
                ]
            )
    ]
  AppInitFinish environmentInfos ->
    [Model model {environmentInfos}]