SPA for part10

part10/ElmHub.elm

@@ -1,43 +1,9 @@
 module ElmHub 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 (..)
 
 
-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"
-
-
-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
@@ -45,93 +11,9 @@ type alias SearchResult =
     }
 
 
-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" ]
-        ]
-
-
-type Msg
-    = Search
-    | SetQuery String
-    | DeleteById Int
-    | HandleSearchResponse (List SearchResult)
-    | HandleSearchError (Maybe String)
-    | DoNothing
-
-
-update : (String -> Cmd Msg) -> Msg -> Model -> ( Model, Cmd Msg )
-update searchFeed msg model =
-    case msg of
-        Search ->
-            ( model, searchFeed (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 idToHide ->
-            let
-                newResults =
-                    model.results
-                        |> List.filter (\{ id } -> id /= idToHide)
-
-                newModel =
-                    { model | results = newResults }
-            in
-                ( newModel, Cmd.none )
-
-        DoNothing ->
-            ( model, Cmd.none )
-
-
-decodeGithubResponse : Json.Decode.Value -> Msg
-decodeGithubResponse value =
-    case Json.Decode.decodeValue responseDecoder value of
-        Ok results ->
-            HandleSearchResponse results
-
-        Err err ->
-            HandleSearchError (Just err)
+searchResultDecoder : Decoder SearchResult
+searchResultDecoder =
+    decode SearchResult
+        |> required "id" Json.Decode.int
+        |> required "full_name" Json.Decode.string
+        |> required "stargazers_count" Json.Decode.int

part10/Main.elm

@@ -1,31 +1,105 @@
-port module Main exposing (..)
+module Main exposing (..)
 
-import ElmHub exposing (..)
+import Pages.Home
+import Pages.Repository
+import Navigation
+import Page exposing (Page(..))
+import Tuple2
+import Html exposing (Html, div, h1, header, text, span)
+import Html.Attributes exposing (class)
 import Html.App as Html
-import Json.Decode
+
+
+type Model
+    = Home Pages.Home.Model
+    | Repository Pages.Repository.Model
+
+
+type Msg
+    = HomeMsg Pages.Home.Msg
+    | RepositoryMsg Pages.Repository.Msg
 
 
 main : Program Never
 main =
-    Html.program
-        { view = view
-        , update = update githubSearch
-        , init = ( initialModel, githubSearch (getQueryString initialModel.query) )
-        , subscriptions = \_ -> githubResponse decodeResponse
+    Navigation.program (Navigation.makeParser Page.parser)
+        { init = init
+        , subscriptions = subscriptions
+        , view = view
+        , update = update
+        , urlUpdate = urlUpdate
         }
 
 
-decodeResponse : Json.Decode.Value -> Msg
-decodeResponse json =
-    case Json.Decode.decodeValue responseDecoder json of
-        Err err ->
-            HandleSearchError (Just err)
+subscriptions : Model -> Sub Msg
+subscriptions model =
+    case model of
+        Home pageModel ->
+            Pages.Home.subscriptions pageModel
+                |> Sub.map HomeMsg
 
-        Ok results ->
-            HandleSearchResponse results
+        Repository pageModel ->
+            Sub.none
 
 
-port githubSearch : String -> Cmd msg
+init : Result String Page -> ( Model, Cmd Msg )
+init result =
+    Home (fst Pages.Home.init)
+        |> urlUpdate result
 
 
-port githubResponse : (Json.Decode.Value -> msg) -> Sub msg
+view : Model -> Html Msg
+view model =
+    withHeader <|
+        case model of
+            Home pageModel ->
+                Pages.Home.view pageModel
+                    |> Html.map HomeMsg
+
+            Repository pageModel ->
+                Pages.Repository.view pageModel
+                    |> Html.map RepositoryMsg
+
+
+withHeader : Html msg -> Html msg
+withHeader innerContent =
+    div [ class "content" ]
+        [ header []
+            [ h1 [] [ text "ElmHub" ]
+            , span [ class "tagline" ] [ text "Like GitHub, but for Elm things." ]
+            ]
+        , innerContent
+        ]
+
+
+update : Msg -> Model -> ( Model, Cmd Msg )
+update msg model =
+    case ( msg, model ) of
+        ( HomeMsg pageMsg, Home pageModel ) ->
+            Pages.Home.update pageMsg pageModel
+                |> Tuple2.mapEach Home (Cmd.map HomeMsg)
+
+        ( RepositoryMsg pageMsg, Repository pageModel ) ->
+            Pages.Repository.update pageMsg pageModel
+                |> Tuple2.mapEach Repository (Cmd.map RepositoryMsg)
+
+        ( _, _ ) ->
+            ( model, Cmd.none )
+
+
+urlUpdate : Result String Page -> Model -> ( Model, Cmd Msg )
+urlUpdate result model =
+    case result of
+        Ok (Page.Home) ->
+            Pages.Home.init
+                |> Tuple2.mapEach Home (Cmd.map HomeMsg)
+
+        Ok (Page.Repository id) ->
+            Pages.Repository.init id
+                |> Tuple2.mapEach Repository (Cmd.map RepositoryMsg)
+
+        Ok NotFound ->
+            ( model, Cmd.none )
+
+        Err _ ->
+            ( model, Navigation.modifyUrl "/" )

part10/Page.elm

@@ -0,0 +1,26 @@
+module Page exposing (..)
+
+import Navigation
+import UrlParser exposing (Parser, (</>), format, int, s, string)
+import String
+
+
+type Page
+    = Home
+    | Repository Int
+    | NotFound
+
+
+pageParser : Parser (Page -> a) a
+pageParser =
+    UrlParser.oneOf
+        [ format Home (s "")
+        , format Repository (s "repositories" </> int)
+        ]
+
+
+parser : Navigation.Location -> Result String Page
+parser location =
+    location.pathname
+        |> String.dropLeft 1
+        |> UrlParser.parse identity pageParser

part10/Pages/Home.elm

@@ -0,0 +1,151 @@
+port module Pages.Home 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 ElmHub exposing (SearchResult)
+import Navigation
+
+
+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"
+
+
+responseDecoder : Decoder (List SearchResult)
+responseDecoder =
+    Json.Decode.at [ "items" ] (Json.Decode.list ElmHub.searchResultDecoder)
+
+
+type alias Model =
+    { query : String
+    , results : List SearchResult
+    , errorMessage : Maybe String
+    }
+
+
+initialQuery : String
+initialQuery =
+    "tutorial"
+
+
+init : ( Model, Cmd Msg )
+init =
+    ( { query = initialQuery
+      , results = []
+      , errorMessage = Nothing
+      }
+    , githubSearch (getQueryString initialQuery)
+    )
+
+
+view : Model -> Html Msg
+view model =
+    div []
+        [ 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 [ onClick (Visit ("/repositories/" ++ toString result.id)) ]
+            [ text result.name ]
+        , button [ class "hide-result", onClick (DeleteById result.id) ]
+            [ text "X" ]
+        ]
+
+
+type Msg
+    = Search
+    | Visit String
+    | SetQuery String
+    | DeleteById Int
+    | HandleSearchResponse (List SearchResult)
+    | HandleSearchError (Maybe String)
+    | DoNothing
+
+
+update : Msg -> Model -> ( Model, Cmd Msg )
+update msg model =
+    case msg of
+        Visit url ->
+            ( model, Navigation.newUrl url )
+
+        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 idToHide ->
+            let
+                newResults =
+                    model.results
+                        |> List.filter (\{ id } -> id /= idToHide)
+
+                newModel =
+                    { model | results = newResults }
+            in
+                ( newModel, Cmd.none )
+
+        DoNothing ->
+            ( model, Cmd.none )
+
+
+decodeGithubResponse : Json.Decode.Value -> Msg
+decodeGithubResponse value =
+    case Json.Decode.decodeValue responseDecoder value of
+        Ok results ->
+            HandleSearchResponse results
+
+        Err err ->
+            HandleSearchError (Just err)
+
+
+decodeResponse : Json.Decode.Value -> Msg
+decodeResponse json =
+    case Json.Decode.decodeValue responseDecoder json of
+        Err err ->
+            HandleSearchError (Just err)
+
+        Ok results ->
+            HandleSearchResponse results
+
+
+subscriptions : Model -> Sub Msg
+subscriptions _ =
+    githubResponse decodeResponse
+
+
+port githubSearch : String -> Cmd msg
+
+
+port githubResponse : (Json.Decode.Value -> msg) -> Sub msg

part10/Pages/Repository.elm

@@ -0,0 +1,37 @@
+module Pages.Repository exposing (..)
+
+import Html exposing (..)
+import Html.Attributes exposing (class, target, href, property, defaultValue)
+import ElmHub exposing (SearchResult)
+
+
+type alias Model =
+    SearchResult
+
+
+init : Int -> ( Model, Cmd Msg )
+init id =
+    ( { id = id
+      , name = ""
+      , stars = id
+      }
+    , Cmd.none
+    )
+
+
+view : Model -> Html Msg
+view model =
+    div []
+        [ div [] [ text ("repo" ++ toString model.stars) ]
+        ]
+
+
+type Msg
+    = NoOp
+
+
+update : Msg -> Model -> ( Model, Cmd Msg )
+update msg model =
+    case msg of
+        NoOp ->
+            ( model, Cmd.none )

part10/elm-package.json

@@ -9,10 +9,13 @@
     ],
     "exposed-modules": [],
     "dependencies": {
+        "Fresheyeball/elm-tuple-extra": "2.1.0 <= v < 3.0.0",
         "NoRedInk/elm-decode-pipeline": "1.1.2 <= v < 2.0.0",
         "elm-lang/core": "4.0.1 <= v < 5.0.0",
         "elm-lang/html": "1.0.0 <= v < 2.0.0",
-        "evancz/elm-http": "3.0.1 <= v < 4.0.0"
+        "elm-lang/navigation": "1.0.0 <= v < 2.0.0",
+        "evancz/elm-http": "3.0.1 <= v < 4.0.0",
+        "evancz/url-parser": "1.0.0 <= v < 2.0.0"
     },
     "elm-version": "0.17.0 <= v < 0.18.0"
 }

part10/style.css

@@ -99,3 +99,7 @@ button:focus, input:focus {
   font-family: monospace;
   font-size: 18px;
 }
+
+a {
+  cursor: pointer;
+}