153 lines
4.1 KiB
Elm
153 lines
4.1 KiB
Elm
module ElmHub exposing (..)
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import Auth
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import Html exposing (..)
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import Html.Attributes exposing (class, target, href, property, defaultValue)
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import Html.Events exposing (..)
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import Http
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import Task exposing (Task)
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import Json.Decode exposing (Decoder)
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import Json.Decode.Pipeline exposing (..)
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searchFeed : String -> Cmd Msg
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searchFeed query =
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let
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url =
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"https://api.github.com/search/repositories?access_token="
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++ Auth.token
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++ "&q="
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++ query
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++ "+language:elm&sort=stars&order=desc"
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-- TODO use these ingredients to give Task.perform the arguments it needs:
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--
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-- Http.get
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-- url
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-- responseDecoder
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-- HandleSearchResponse
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-- HandleSearchError
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--
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-- Hint: http://package.elm-lang.org/packages/evancz/elm-http/3.0.0/Http#get
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task =
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"TODO call Task.perform ..."
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in
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-- TODO replace this Cmd.none with a call to Task.perform
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Cmd.none
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responseDecoder : Decoder (List SearchResult)
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responseDecoder =
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Json.Decode.at [ "items" ] (Json.Decode.list searchResultDecoder)
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searchResultDecoder : Decoder SearchResult
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searchResultDecoder =
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decode SearchResult
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|> required "id" Json.Decode.int
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|> required "full_name" Json.Decode.string
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|> required "stargazers_count" Json.Decode.int
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type alias Model =
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{ query : String
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, results : List SearchResult
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, errorMessage : Maybe String
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}
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type alias SearchResult =
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{ id : ResultId
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, name : String
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, stars : Int
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}
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type alias ResultId =
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Int
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initialModel : Model
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initialModel =
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{ query = "tutorial"
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, results = []
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, errorMessage = Nothing
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}
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view : Model -> Html Msg
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view model =
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div [ class "content" ]
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[ header []
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[ h1 [] [ text "ElmHub" ]
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, span [ class "tagline" ] [ text "“Like GitHub, but for Elm things.”" ]
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]
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, input [ class "search-query", onInput SetQuery, defaultValue model.query ] []
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, button [ class "search-button", onClick Search ] [ text "Search" ]
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, viewErrorMessage model.errorMessage
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, ul [ class "results" ] (List.map viewSearchResult model.results)
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]
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viewErrorMessage : Maybe String -> Html a
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viewErrorMessage errorMessage =
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case errorMessage of
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Just message ->
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div [ class "error" ] [ text message ]
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Nothing ->
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text ""
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viewSearchResult : SearchResult -> Html Msg
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viewSearchResult result =
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li []
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[ span [ class "star-count" ] [ text (toString result.stars) ]
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, a [ href ("https://github.com/" ++ result.name), target "_blank" ]
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[ text result.name ]
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, button [ class "hide-result", onClick (DeleteById result.id) ]
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[ text "X" ]
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]
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type Msg
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= Search
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| SetQuery String
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| DeleteById ResultId
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| HandleSearchResponse (List SearchResult)
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| HandleSearchError Http.Error
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update : Msg -> Model -> ( Model, Cmd Msg )
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update msg model =
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case msg of
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Search ->
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( model, searchFeed model.query )
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HandleSearchResponse results ->
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( { model | results = results }, Cmd.none )
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HandleSearchError error ->
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-- TODO if decoding failed, store the message in model.errorMessage
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--
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-- Hint 1: look for "decode" in the documentation for this union type:
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-- http://package.elm-lang.org/packages/evancz/elm-http/3.0.1/Http#Error
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--
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-- Hint 2: to check if this is working, break responseDecoder
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-- by changing "stargazers_count" to "description"
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( model, Cmd.none )
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SetQuery query ->
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( { model | query = query }, Cmd.none )
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DeleteById idToHide ->
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let
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newResults =
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model.results
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|> List.filter (\{ id } -> id /= idToHide)
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newModel =
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{ model | results = newResults }
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in
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( newModel, Cmd.none )
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