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module View.Form exposing
  ( textInput
  )

import Html exposing (..)
import Html.Attributes exposing (..)

import Form exposing (Form)
import Form.Input as Input
import Form.Error as FormError exposing (Error(..))

import Msg exposing (Msg)

import LoggedData exposing (LoggedData)

import Model.Translations as Translations exposing (Translations)

import Utils.Maybe exposing (isJust)

textInput : Translations -> Form String a -> (Html Form.Msg -> Html msg) -> String -> Html msg
textInput translations form htmlMap fieldName =
  let field = Form.getFieldAsString fieldName form
  in  div
        [ classList
            [ ("textInput", True)
            , ("error", isJust field.liveError)
            ]
        ]
        [ htmlMap <|
            Input.textInput
              field
              [ id fieldName
              , classList [ ("filled", isJust field.value) ]
              ]
        , label
            [ for fieldName ]
            [ text (Translations.getMessage fieldName translations) ]
        , case field.liveError of
            Just error -> formError translations error
            Nothing -> text ""
        ]

simpleTextInput : Translations -> Form String a -> (Html Form.Msg -> Html msg) -> String -> Html msg
simpleTextInput translations form htmlMap fieldName =
  let field = Form.getFieldAsString fieldName form
  in  div
        [ classList
            [ ("textInput", True)
            , ("error", isJust field.liveError)
            ]
        ]
        [ htmlMap <|
            Input.textInput
              field
              [ id fieldName
              , classList [ ("filled", isJust field.value) ]
              ]
        , label
            [ for fieldName ]
            [ text (Translations.getMessage fieldName translations) ]
        , case field.liveError of
            Just error -> formError translations error
            Nothing -> text ""
        ]

formError : Translations -> FormError.Error String -> Html msg
formError translations error =
  let errorElement error params =
        div
          [ class "errorMessage" ]
          [ text (Translations.getParamMessage params error translations) ]
  in  case error of
        CustomError key -> errorElement key []
        SmallerIntThan n -> errorElement "SmallerIntThan" [toString n]
        GreaterIntThan n -> errorElement "GreaterIntThan" [toString n]
        error -> errorElement (toString error) []