Add part11

part11/.gitignore

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+!Auth.elm

part11/Main.elm

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+module Main exposing (..)
+
+import Page.Home
+import Page.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
+
+
+type Model
+    = Home Page.Home.Model
+    | Repository Page.Repository.Model
+    | NotFound
+
+
+type Msg
+    = HomeMsg Page.Home.Msg
+    | RepositoryMsg Page.Repository.Msg
+
+
+main : Program Never
+main =
+    Navigation.program (Navigation.makeParser Page.parser)
+        { init = init
+        , subscriptions = subscriptions
+        , view = view
+        , update = update
+        , urlUpdate = urlUpdate
+        }
+
+
+subscriptions : Model -> Sub Msg
+subscriptions model =
+    case model of
+        Home pageModel ->
+            Page.Home.subscriptions pageModel
+                |> Sub.map HomeMsg
+
+        Repository pageModel ->
+            -- Repository has no subscriptions, so there's nothing to translate!
+            Sub.none
+
+        NotFound ->
+            -- NotFound has no subscriptions, so there's nothing to translate!
+            Sub.none
+
+
+init : Result String Page -> ( Model, Cmd Msg )
+init result =
+    case result of
+        Ok (Page.Home) ->
+            Page.Home.init
+                |> Tuple2.mapEach Home (Cmd.map HomeMsg)
+
+        Ok (Page.Repository repoOwner repoName) ->
+            Page.Repository.init repoOwner repoName
+                |> Tuple2.mapEach Repository (Cmd.map RepositoryMsg)
+
+        Ok (Page.NotFound) ->
+            ( NotFound, Cmd.none )
+
+        Err err ->
+            ( NotFound, Cmd.none )
+
+
+view : Model -> Html Msg
+view model =
+    withHeader <|
+        case model of
+            Home pageModel ->
+                Page.Home.view pageModel
+                    |> Html.map HomeMsg
+
+            Repository pageModel ->
+                Page.Repository.view pageModel
+                    |> Html.map RepositoryMsg
+
+            NotFound ->
+                h1 [] [ text "Page Not Found" ]
+
+
+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 ) ->
+            Page.Home.update pageMsg pageModel
+                |> Tuple2.mapEach Home (Cmd.map HomeMsg)
+
+        ( RepositoryMsg pageMsg, Repository pageModel ) ->
+            Page.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) ->
+            Page.Home.init
+                |> Tuple2.mapEach Home (Cmd.map HomeMsg)
+
+        Ok (Page.Repository repoOwner repoName) ->
+            Page.Repository.init repoOwner repoName
+                |> Tuple2.mapEach Repository (Cmd.map RepositoryMsg)
+
+        Ok (Page.NotFound) ->
+            ( NotFound, Cmd.none )
+
+        Err err ->
+            ( NotFound, Cmd.none )

part11/Page.elm

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

part11/Page/Home.elm

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+port module Page.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 Json.Decode.Pipeline exposing (decode, required)
+import Navigation
+
+
+type alias SearchResult =
+    { id : Int
+    , name : String
+    , stars : Int
+    }
+
+
+searchResultDecoder : Decoder SearchResult
+searchResultDecoder =
+    decode SearchResult
+        |> required "id" Json.Decode.int
+        |> required "full_name" Json.Decode.string
+        |> required "stargazers_count" Json.Decode.int
+
+
+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)
+
+
+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/" ++ result.name)) ]
+            [ 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

part11/Page/Repository.elm

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+module Page.Repository exposing (..)
+
+import Html exposing (..)
+import Html.Attributes exposing (class, target, href, property, defaultValue, src)
+import Auth
+import Http
+import Task
+import Json.Decode exposing (Decoder, int, string, list)
+import Json.Decode.Pipeline exposing (decode, required)
+
+
+type alias Model =
+    { repoOwner : String
+    , repoName : String
+    , repository : Maybe Repository
+    }
+
+
+type alias Repository =
+    { id : Int
+    , issues : Int
+    , forks : Int
+    , watchers : Int
+    , owner : User
+    , description : String
+    }
+
+
+type alias User =
+    { id : Int
+    , username : String
+    , avatarUrl : String
+    , profileUrl : String
+    }
+
+
+userDecoder : Decoder User
+userDecoder =
+    decode User
+        |> required "id" int
+        |> required "login" string
+        |> required "avatar_url" string
+        |> required "url" string
+
+
+repoDecoder : Decoder Repository
+repoDecoder =
+    decode Repository
+        |> required "id" int
+        |> required "open_issues_count" int
+        |> required "forks" int
+        |> required "watchers" int
+        |> required "owner" userDecoder
+        |> required "description" string
+
+
+init : String -> String -> ( Model, Cmd Msg )
+init repoOwner repoName =
+    ( { repoOwner = repoOwner
+      , repoName = repoName
+      , repository = Nothing
+      }
+    , getRepoInfo repoOwner repoName
+    )
+
+
+view : Model -> Html Msg
+view model =
+    let
+        ownerUrl =
+            "https://github.com/" ++ model.repoOwner
+
+        repoUrl =
+            ownerUrl ++ "/" ++ model.repoName
+
+        details =
+            model.repository
+                |> Maybe.map viewDetails
+                |> Maybe.withDefault (text "")
+    in
+        div []
+            [ h2 []
+                [ a [ href repoUrl ] [ text model.repoName ] ]
+            , details
+            ]
+
+
+viewDetails : Repository -> Html Msg
+viewDetails repo =
+    div []
+        [ p [ class "repo-description" ] [ text repo.description ]
+        , h3 []
+            [ a [ href repo.owner.profileUrl ]
+                [ img [ class "profile-photo", src repo.owner.avatarUrl ] []
+                , text repo.owner.username
+                ]
+            ]
+        , table []
+            [ tbody []
+                [ tr [] [ th [] [ text "issues" ], td [] [ text (toString repo.issues) ] ]
+                , tr [] [ th [] [ text "forks" ], td [] [ text (toString repo.forks) ] ]
+                , tr [] [ th [] [ text "watchers" ], td [] [ text (toString repo.watchers) ] ]
+                ]
+            ]
+        ]
+
+
+type Msg
+    = HandleRepoError Http.Error
+    | HandleRepoResponse Repository
+
+
+getRepoInfo : String -> String -> Cmd Msg
+getRepoInfo repoOwner repoName =
+    let
+        url =
+            "https://api.github.com/repos/"
+                ++ repoOwner
+                ++ "/"
+                ++ repoName
+                ++ "?access_token="
+                ++ Auth.token
+                |> Debug.log "getRepoInfo"
+    in
+        Http.get repoDecoder url
+            |> Task.perform HandleRepoError HandleRepoResponse
+
+
+update : Msg -> Model -> ( Model, Cmd Msg )
+update msg model =
+    case msg of
+        HandleRepoError err ->
+            ( model, Cmd.none )
+
+        HandleRepoResponse repository ->
+            ( { model | repository = Just repository }, Cmd.none )

part11/README.md

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+Part 10
+=======
+
+The instructor will paste notes from the lesson, including code examples from
+Q&A, in [this document](https://docs.google.com/document/d/1ApuSOk9DP0YsQrxhW7-WE8UOEAV4PPnLDDeqUOL2o5k/edit?usp=sharing).
+
+## Installation
+
+```bash
+elm-package install
+```
+
+(Answer `y` when prompted.)
+
+
+## Building
+
+```bash
+elm-live Main.elm --open --pushstate --output=elm.js
+```
+
+## Running Tests
+
+Do either (or both!) of the following:
+
+#### Running tests on the command line
+
+```bash
+elm-test
+```
+
+#### Running tests in a browser
+
+```bash
+cd tests
+elm-reactor
+```
+
+Then visit [localhost:8000](http://localhost:8000) and choose `HtmlRunner.elm`.
+
+## References
+
+* [Using Elm packages](https://github.com/elm-lang/elm-package/blob/master/README.md#basic-usage)
+* [elm-test documentation](http://package.elm-lang.org/packages/project-fuzzball/test/latest)
+* [`(<|)` documentation](http://package.elm-lang.org/packages/elm-lang/core/4.0.0/Basics#<|)

part11/elm-package.json

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+{
+    "version": "1.0.0",
+    "summary": "Like GitHub, but for Elm stuff.",
+    "repository": "https://github.com/rtfeldman/elm-workshop.git",
+    "license": "BSD-3-Clause",
+    "source-directories": [
+        ".",
+        ".."
+    ],
+    "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",
+        "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"
+}

part11/index.html

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+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <meta charset="UTF-8">
+  <title>ElmHub</title>
+  <script type="text/javascript" src="/github.js"></script>
+  <script type="text/javascript" src="/elm.js"></script>
+  <link rel="stylesheet" href="/style.css">
+  <link rel="icon" type="image/png" href="/elm-hub.png">
+</head>
+
+<body>
+  <div id="elm-landing-pad"></div>
+</body>
+
+<script type="text/javascript">
+  // documentation: https://github.com/michael/github
+  var github = new Github();
+
+  var app = Elm.Main.embed(document.getElementById("elm-landing-pad"));
+
+  function searchGithub(query) {
+    console.log("Searching for", query);
+
+    github.getSearch(query).repositories({}, function (err, repositories) {
+      console.log("Got response", repositories);
+
+      app.ports.githubResponse.send(repositories);
+    });
+  }
+
+  app.ports.githubSearch.subscribe(searchGithub);
+</script>
+
+</html>

part11/style.css

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+
+.content {
+  width: 960px;
+  margin: 0 auto;
+  padding: 30px;
+  font-family: Helvetica, Arial, serif;
+}
+
+header {
+  position: relative;
+  padding: 6px 12px;
+  height: 36px;
+  background-color: rgb(96, 181, 204);
+}
+
+h1 {
+  color: white;
+  font-weight: normal;
+  margin: 0;
+}
+
+.tagline {
+  color: #eee;
+  position: absolute;
+  right: 16px;
+  top: 12px;
+  font-size: 24px;
+  font-style: italic;
+}
+
+.results {
+  list-style-image: url('http://img-cache.cdn.gaiaonline.com/76bd5c99d8f2236e9d3672510e933fdf/http://i278.photobucket.com/albums/kk81/d3m3nt3dpr3p/Tiny-Star-Icon.png');
+  list-style-position: inside;
+  padding: 0;
+}
+
+.results li {
+  font-size: 18px;
+  margin-bottom: 16px;
+}
+
+.star-count {
+  font-weight: bold;
+  margin-right: 16px;
+}
+
+a {
+  color: rgb(96, 181, 204);
+  text-decoration: none;
+}
+
+a:hover {
+  text-decoration: underline;
+}
+
+.search-query {
+  padding: 8px;
+  font-size: 24px;
+  margin-bottom: 18px;
+  margin-top: 36px;
+}
+
+.search-button {
+  padding: 8px 16px;
+  font-size: 24px;
+  color: white;
+  border: 1px solid #ccc;
+  background-color: rgb(96, 181, 204);
+  margin-left: 12px
+}
+
+.search-button:hover {
+  color: rgb(96, 181, 204);
+  background-color: white;
+}
+
+.hide-result {
+  background-color: transparent;
+  border: 0;
+  font-weight: bold;
+  font-size: 18px;
+  margin-left: 18px;
+  cursor: pointer;
+}
+
+.hide-result:hover {
+  color: rgb(96, 181, 204);
+}
+
+button:focus, input:focus {
+  outline: none;
+}
+
+.error {
+  background-color: #FF9632;
+  padding: 20px;
+  box-sizing: border-box;
+  overflow-x: auto;
+  font-family: monospace;
+  font-size: 18px;
+}
+
+a {
+  cursor: pointer;
+}
+
+.repo-description {
+  font-size: 18px;
+}
+
+.profile-photo {
+  width: 32px;
+  margin-right: 10px;
+}
+
+th {
+  text-align: left;
+}
+
+th, td {
+  font-size: 18px;
+  padding-right: 20px;
+}

part11/tests/Auth.elm

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+module Auth exposing (token)
+
+
+token : String
+token =
+    -- Tests don't need a real token.
+    ""

part11/tests/HtmlRunner.elm

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+module HtmlRunner exposing (..)
+
+import Tests
+import Test.Runner.Html as Runner
+
+
+-- To run this:
+--
+-- cd into part8/test
+-- elm-reactor
+-- navigate to HtmlRunner.elm
+
+
+main : Program Never
+main =
+    Runner.run Tests.all

part11/tests/Main.elm

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+port module Main exposing (..)
+
+import Tests
+import Test.Runner.Node as Runner
+import Json.Decode exposing (Value)
+
+
+-- To run this:
+--
+-- elm-test
+
+
+main : Program Value
+main =
+    Runner.run emit Tests.all
+
+
+port emit : ( String, Value ) -> Cmd msg

part11/tests/Tests.elm

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+module Tests exposing (..)
+
+import Test exposing (..)
+import Fuzz exposing (..)
+import Expect exposing (Expectation)
+import ElmHub exposing (responseDecoder)
+import Json.Decode exposing (decodeString, Value)
+import String
+
+
+all : Test
+all =
+    describe "GitHub Response Decoder"
+        [ test "it results in an Err for invalid JSON" <|
+            \() ->
+                let
+                    json =
+                        """{ "pizza": [] }"""
+
+                    isErrorResult result =
+                        case result of
+                            Err _ ->
+                                True
+
+                            Ok _ ->
+                                False
+                in
+                    json
+                        |> decodeString responseDecoder
+                        |> isErrorResult
+                        |> Expect.true "Expected decoding an invalid response to return an Err."
+        , test "it successfully decodes a valid response" <|
+            \() ->
+                """{ "items": [
+                    { "id": 5, "full_name": "foo", "stargazers_count": 42 },
+                    { "id": 3, "full_name": "bar", "stargazers_count": 77 }
+                 ] }"""
+                    |> decodeString responseDecoder
+                    |> Expect.equal
+                        (Ok
+                            [ { id = 5, name = "foo", stars = 42 }
+                            , { id = 3, name = "bar", stars = 77 }
+                            ]
+                        )
+        , fuzz (list int) "it decodes one SearchResult for each 'item' in the JSON" <|
+            \ids ->
+                let
+                    jsonFromId id =
+                        """{"id": """ ++ toString id ++ """, "full_name": "foo", "stargazers_count": 42}"""
+
+                    jsonItems =
+                        String.join ", " (List.map jsonFromId ids)
+
+                    json =
+                        """{ "items": [""" ++ jsonItems ++ """] }"""
+                in
+                    case decodeString responseDecoder json of
+                        Ok results ->
+                            List.length results
+                                |> Expect.equal (List.length ids)
+
+                        Err err ->
+                            Expect.fail ("JSON decoding failed unexpectedly: " ++ err)
+        ]

part11/tests/elm-package.json

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+{
+    "version": "1.0.0",
+    "summary": "Like GitHub, but for Elm stuff.",
+    "repository": "https://github.com/rtfeldman/elm-workshop.git",
+    "license": "BSD-3-Clause",
+    "source-directories": [
+        ".",
+        ".."
+    ],
+    "exposed-modules": [],
+    "dependencies": {
+        "NoRedInk/elm-decode-pipeline": "1.1.2 <= v < 2.0.0",
+        "elm-community/elm-test": "2.0.1 <= v < 3.0.0",
+        "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",
+        "rtfeldman/html-test-runner": "1.0.0 <= v < 2.0.0",
+        "rtfeldman/node-test-runner": "2.0.0 <= v < 3.0.0"
+    },
+    "elm-version": "0.17.0 <= v < 0.18.0"
+}