module Main exposing (Model, Msg(..), init, main, update, view)

import Browser
import Data exposing (Url, hostname, repository, servicename, toUrl)
import Html exposing (Html, a, article, h1, input, li, nav, section, small, text, ul)
import Html.Attributes exposing (disabled, href, placeholder, style, value)
import Html.Events exposing (onInput)
import Parse exposing (parseUrl)
import Ribbon exposing (ribbon)


type Msg
    = UrlChange String


type alias Model =
    { url : String
    , parsed : Maybe Url
    }


init : Model
init =
    { url = ""
    , parsed = Nothing
    }


update : Msg -> Model -> Model
update msg state =
    case msg of
        UrlChange newUrl ->
            { state | url = newUrl, parsed = parseUrl newUrl }


displayMUrl : Maybe Url -> String
displayMUrl mUrl =
    mUrl
        |> Maybe.map toUrl
        |> Maybe.withDefault (hostname ++ "<service>/<user>/<repo>/<gitref>/<file>")


myStyle : List (Html.Attribute msg)
myStyle =
    [ style "width" "100%" ]


myStyle2 : List (Html.Attribute msg) -> List (Html.Attribute msg)
myStyle2 =
    List.append myStyle


view : Model -> Html Msg
view state =
    section myStyle
        [ header
        , body state
        , footer
        ]


header : Html msg
header =
    Html.header []
        [ h1 myStyle [ text servicename ]
        , ribbon repository
        ]


footer : Html msg
footer =
    Html.footer myStyle
        [ nav []
            [ ul []
                [ li []
                    [ small []
                        [ text "Created by "
                        , a [ href "https://www.vbrandl.net/" ] [ text "Valentin Brandl" ]
                        , text "."
                        ]
                    ]
                ]
            ]
        , nav []
            [ ul []
                [ li []
                    [ small []
                        [ a [ href repository ] [ text "Repository" ] ]
                    ]
                , li []
                    [ small []
                        [ a [ href "https://opensource.org/licenses/MIT" ] [ text "MIT License" ] ]
                    ]
                ]
            ]
        ]


body : Model -> Html Msg
body state =
    article myStyle
        [ input (myStyle2 [ placeholder "GitHub/GitLab/Bitbucket URL", value state.url, onInput UrlChange ])
            []
        , input (myStyle2 [ disabled True, value (displayMUrl state.parsed) ]) []
        ]


main : Program () Model Msg
main =
    Browser.sandbox { init = init, update = update, view = view }