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module Page.ListCollection
  ( Model,
    initialModel,
    Action,
    updateModel,
    viewModel,
  )
where

import Api
import Data.Aeson qualified as A
import Data.Aeson.KeyMap qualified as AM
import Form qualified as F
import Miso
import Miso.String (toMisoString)
import Schema

data Model = Model
  { collection :: String,
    input :: A.Value,
    schema :: Schema,
    posts :: [A.Value]
  }
  deriving (Show, Eq)

initialModel :: String -> JSM (Either String Model)
initialModel collection = do
  schema' <- fetchSchema
  posts' <- fetchPosts
  pure do
    schema <- schema'
    posts <- posts'
    pure $ Model {input = A.Object AM.empty, ..}

data Action
  = NoOp
  | FormChanged A.Value
  | FormSubmitted A.Value
  deriving (Eq, Show)

updateModel :: Action -> Model -> Effect Action Model
updateModel NoOp m = noEff m
updateModel (FormChanged input) m = noEff m {input}
updateModel (FormSubmitted output) m =
  m <# do
    const NoOp <$> consoleLog (toMisoString (A.encode output))

viewModel :: Model -> View Action
viewModel m =
  div_ [] $
    [ viewSchema m.schema,
      viewPosts m.posts,
      viewForm m.input m.schema,
      viewInput m.input
    ]

viewForm :: A.Value -> Schema -> View Action
viewForm input =
  fmap (either FormChanged FormSubmitted)
    . flip F.runForm input
    . schemaForm

viewInput :: A.Value -> View Action
viewInput input =
  pre_ [] [text (toMisoString (A.encode input))]

viewPosts :: [A.Value] -> View Action
viewPosts posts = ol_ [] (viewPost <$> posts)
  where
    viewPost post = pre_ [] [text (toMisoString (A.encode post))]