module Examples.RadioButton exposing
    ( example
    , State, Msg
    )

{-|

@docs example
@docs State, Msg

-}

import Browser.Dom as Dom
import Category exposing (Category(..))
import Css exposing (..)
import Debug.Control as Control exposing (Control)
import Dict exposing (Dict)
import Example exposing (Example)
import Html.Styled as Html exposing (..)
import Html.Styled.Attributes exposing (css)
import KeyboardSupport exposing (Direction(..), Key(..))
import Nri.Ui.Button.V10 as Button
import Nri.Ui.Data.PremiumLevel as PremiumLevel exposing (PremiumLevel)
import Nri.Ui.Heading.V2 as Heading
import Nri.Ui.Modal.V11 as Modal
import Nri.Ui.RadioButton.V3 as RadioButton
import Nri.Ui.Text.V6 as Text
import Task


{-| -}
example : Example State Msg
example =
    { name = "RadioButton"
    , version = 3
    , state = init
    , update = update
    , subscriptions = subscriptions
    , preview = []
    , view = view
    , categories = [ Inputs ]
    , keyboardSupport =
        [ { keys = [ Arrow Left ]
          , result = "Move the focus & select the radio button to the left"
          }
        , { keys = [ Arrow Right ]
          , result = "Move the focus & select the radio button to the right"
          }
        , { keys = [ Space ]
          , result = "Select the current radio button"
          }
        ]
    }


{-| -}
view : State -> List (Html Msg)
view model =
    [ Heading.h3 [] [ Html.text "RadioButton" ]
    , Heading.h4 [] [ Html.text "view" ]
    , viewVanilla model
    , Heading.h4 [] [ Html.text "premium" ]
    , Modal.view
        { title = "Go Premium!"
        , wrapMsg = ModalMsg
        , content = [ Text.mediumBody [ Text.plaintext "Often, we'll launch a modal showing the benefits of premium when a locked radio button is clicked." ] ]
        , footer =
            [ Button.button "Okay"
                [ Button.modal
                , Button.onClick CloseModal
                , Button.id "close-premium-modal"
                ]
            ]
        , focusTrap =
            { focus = Focus
            , firstId = Modal.closeButtonId
            , lastId = "close-premium-modal"
            }
        }
        [ Modal.closeButton ]
        model.modal
    ]


viewVanilla : State -> Html Msg
viewVanilla state =
    div []
        [ RadioButton.view
            (selectionToString Dogs)
            [ RadioButton.enabled
            , RadioButton.value Dogs
            , RadioButton.name "pets"
            , RadioButton.selectedValue state.selectedValue
            , RadioButton.onSelect Select
            , RadioButton.valueToString selectionToString
            ]
        , RadioButton.view
            (selectionToString Cats)
            [ RadioButton.enabled
            , RadioButton.value Cats
            , RadioButton.name "pets"
            , RadioButton.selectedValue state.selectedValue
            , RadioButton.onSelect Select
            , RadioButton.valueToString selectionToString
            ]
        , RadioButton.view
            (selectionToString Robots)
            [ RadioButton.premium
                { teacherPremiumLevel = PremiumLevel.Premium
                , contentPremiumLevel = PremiumLevel.PremiumWithWriting
                }
            , RadioButton.value Robots
            , RadioButton.name "pets"
            , RadioButton.selectedValue state.selectedValue
            , RadioButton.onSelect Select
            , RadioButton.valueToString selectionToString
            ]
        ]


type Selection
    = Dogs
    | Cats
    | Robots


selectionToString : Selection -> String
selectionToString selection =
    case selection of
        Dogs ->
            "Dogs"

        Cats ->
            "Cats"

        Robots ->
            "Robots"


{-| -}
type alias State =
    { selectedValue : Maybe Selection
    , modal : Modal.Model
    , premiumControl : Control PremiumConfig
    }


{-| -}
init : State
init =
    { selectedValue = Nothing
    , modal = Modal.init
    , premiumControl = initPremiumControls
    }


type alias PremiumConfig =
    { teacherPremiumLevel : PremiumLevel
    , showPennant : Bool
    }


initPremiumControls : Control PremiumConfig
initPremiumControls =
    Control.record PremiumConfig
        |> Control.field "teacherPremiumLevel"
            (Control.choice
                [ ( "Free", Control.value PremiumLevel.Free )
                , ( "Premium", Control.value PremiumLevel.PremiumWithWriting )
                ]
            )
        |> Control.field "showPennant" (Control.bool False)


type Msg
    = OpenModal String
    | ModalMsg Modal.Msg
    | CloseModal
    | Select Selection
    | SetPremiumControl (Control PremiumConfig)
    | Focus String
    | Focused (Result Dom.Error ())


{-| -}
update : Msg -> State -> ( State, Cmd Msg )
update msg model =
    case msg of
        OpenModal returnFocusTo ->
            let
                ( modal, cmd ) =
                    Modal.open
                        { startFocusOn = Modal.closeButtonId
                        , returnFocusTo = returnFocusTo
                        }
            in
            ( { model | modal = modal }, Cmd.map ModalMsg cmd )

        ModalMsg modalMsg ->
            let
                ( modal, cmd ) =
                    Modal.update { dismissOnEscAndOverlayClick = True }
                        modalMsg
                        model.modal
            in
            ( { model | modal = modal }, Cmd.map ModalMsg cmd )

        CloseModal ->
            let
                ( modal, cmd ) =
                    Modal.close model.modal
            in
            ( { model | modal = modal }, Cmd.map ModalMsg cmd )

        Select value ->
            ( { model | selectedValue = Just value }, Cmd.none )

        SetPremiumControl premiumControl ->
            ( { model | premiumControl = premiumControl }, Cmd.none )

        Focus focus ->
            ( model, Task.attempt Focused (Dom.focus focus) )

        Focused _ ->
            ( model, Cmd.none )


subscriptions : State -> Sub Msg
subscriptions { modal } =
    Sub.map ModalMsg (Modal.subscriptions modal)