Simplify part7

part7/Main.elm

@@ -1,31 +1,150 @@
 port module Main exposing (..)
 
-import ElmHub exposing (..)
 import Html.App as Html
-import Json.Decode
+import Json.Decode exposing (..)
+import Html exposing (..)
+import Html.Attributes exposing (class, target, href, property, defaultValue)
+import Html.Events exposing (..)
+import Auth
+import Json.Decode exposing (Decoder)
+import Json.Decode.Pipeline exposing (..)
 
 
 main : Program Never
 main =
     Html.program
         { view = view
-        , update = update githubSearch
+        , update = update
         , init = ( initialModel, githubSearch (getQueryString initialModel.query) )
         , subscriptions = \_ -> githubResponse decodeResponse
         }
 
 
-decodeResponse : Json.Decode.Value -> Msg
-decodeResponse json =
-    case Json.Decode.decodeValue responseDecoder json of
-        Err err ->
-            HandleSearchError (Just err)
+getQueryString : String -> String
+getQueryString query =
+    -- See https://developer.github.com/v3/search/#example for how to customize!
+    "access_token="
+        ++ Auth.token
+        ++ "&q="
+        ++ query
+        ++ "+language:elm&sort=stars&order=desc"
 
-        Ok results ->
-            HandleSearchResponse results
+
+responseDecoder : Decoder (List SearchResult)
+responseDecoder =
+    Json.Decode.at [ "items" ] (Json.Decode.list searchResultDecoder)
+
+
+searchResultDecoder : Decoder SearchResult
+searchResultDecoder =
+    decode SearchResult
+        |> required "id" Json.Decode.int
+        |> required "full_name" Json.Decode.string
+        |> required "stargazers_count" Json.Decode.int
+
+
+type alias Model =
+    { query : String
+    , results : List SearchResult
+    , errorMessage : Maybe String
+    }
+
+
+type alias SearchResult =
+    { id : Int
+    , name : String
+    , stars : Int
+    }
+
+
+initialModel : Model
+initialModel =
+    { query = "tutorial"
+    , results = []
+    , errorMessage = Nothing
+    }
+
+
+view : Model -> Html Msg
+view model =
+    div [ class "content" ]
+        [ header []
+            [ h1 [] [ text "ElmHub" ]
+            , span [ class "tagline" ] [ text "Like GitHub, but for Elm things." ]
+            ]
+        , input [ class "search-query", onInput SetQuery, defaultValue model.query ] []
+        , button [ class "search-button", onClick Search ] [ text "Search" ]
+        , viewErrorMessage model.errorMessage
+        , ul [ class "results" ] (List.map viewSearchResult model.results)
+        ]
+
+
+viewErrorMessage : Maybe String -> Html a
+viewErrorMessage errorMessage =
+    case errorMessage of
+        Just message ->
+            div [ class "error" ] [ text message ]
+
+        Nothing ->
+            text ""
+
+
+viewSearchResult : SearchResult -> Html Msg
+viewSearchResult result =
+    li []
+        [ span [ class "star-count" ] [ text (toString result.stars) ]
+        , a [ href ("https://github.com/" ++ result.name), target "_blank" ]
+            [ text result.name ]
+        , button [ class "hide-result", onClick (DeleteById result.id) ]
+            [ text "X" ]
+        ]
+
+
+update : Msg -> Model -> ( Model, Cmd Msg )
+update msg model =
+    case msg of
+        Search ->
+            ( model, githubSearch (getQueryString model.query) )
+
+        SetQuery query ->
+            ( { model | query = query }, Cmd.none )
+
+        HandleSearchResponse results ->
+            ( { model | results = results }, Cmd.none )
+
+        HandleSearchError error ->
+            ( { model | errorMessage = error }, Cmd.none )
+
+        DeleteById idToDelete ->
+            let
+                newResults =
+                    model.results
+                        |> List.filter (\{ id } -> id /= idToDelete)
+
+                newModel =
+                    { model | results = newResults }
+            in
+                ( newModel, Cmd.none )
+
+
+type Msg
+    = Search
+    | SetQuery String
+    | DeleteById Int
+    | HandleSearchResponse (List SearchResult)
+    | HandleSearchError (Maybe String)
+
+
+decodeResponse : Value -> Msg
+decodeResponse json =
+    -- TODO use decodeValue to decode the response into a Msg.
+    --
+    -- Hint: look at the definition of Msg and
+    -- the definition of responseDecoder
+    HandleSearchError (Just "TODO decode the response!")
 
 
 port githubSearch : String -> Cmd msg
 
 
-port githubResponse : (Json.Decode.Value -> msg) -> Sub msg
+port githubResponse : (Value -> msg) -> Sub msg