Adding routing so event instances are accessable directly.

schedule/Main.elm

@@ -1,18 +1,21 @@
 module Main exposing (..)
 
 import Html exposing (Html, Attribute, div, input, text, li, ul, a, h4, label, i, span, hr, small, p)
-import Html.Attributes exposing (class, classList, id, type_, for, style)
+import Html.Attributes exposing (class, classList, id, type_, for, style, href)
 import Html.Events exposing (onClick)
 import WebSocket exposing (listen)
 import Json.Decode exposing (int, string, float, list, bool, Decoder)
 import Json.Encode
 import Json.Decode.Pipeline exposing (decode, required, optional, hardcoded)
 import Markdown
+import Navigation exposing (Location)
+import UrlParser exposing ((</>))
 
 
 main : Program Flags Model Msg
 main =
-    Html.programWithFlags
+    Navigation.programWithFlags
+        OnLocationChange
         { init = init
         , view = view
         , update = update
@@ -26,6 +29,34 @@ scheduleServer =
 
 
 
+-- ROUTING
+
+
+type Route
+    = OverviewRoute
+    | EventInstanceRoute EventInstanceId
+    | NotFoundRoute
+
+
+matchers : UrlParser.Parser (Route -> a) a
+matchers =
+    UrlParser.oneOf
+        [ UrlParser.map OverviewRoute UrlParser.top
+        , UrlParser.map EventInstanceRoute (UrlParser.s "event" </> UrlParser.int)
+        ]
+
+
+parseLocation : Location -> Route
+parseLocation location =
+    case UrlParser.parseHash matchers location of
+        Just route ->
+            route
+
+        Nothing ->
+            NotFoundRoute
+
+
+
 -- MODEL
 
 
@@ -37,7 +68,7 @@ type alias Model =
     , flags : Flags
     , activeDay : Day
     , filter : Filter
-    , activeEventInstance : Maybe EventInstance
+    , route : Route
     }
 
 
@@ -60,9 +91,13 @@ type alias Speaker =
     }
 
 
+type alias EventInstanceId =
+    Int
+
+
 type alias EventInstance =
     { title : String
-    , id : Int
+    , id : EventInstanceId
     , url : String
     , abstract : String
     , eventSlug : String
@@ -80,6 +115,26 @@ type alias EventInstance =
     }
 
 
+emptyEventInstance =
+    { title = "This should not happen!"
+    , id = 0
+    , url = ""
+    , abstract = ""
+    , eventSlug = ""
+    , eventType = ""
+    , backgroundColor = ""
+    , forgroundColor = ""
+    , from = ""
+    , to = ""
+    , timeslots = 0.0
+    , location = ""
+    , locationIcon = ""
+    , speakers = []
+    , videoRecording = False
+    , videoUrl = ""
+    }
+
+
 type alias EventLocation =
     { name : String
     , slug : String
@@ -108,9 +163,9 @@ allDaysDay =
     Day "All Days" "" ""
 
 
-init : Flags -> ( Model, Cmd Msg )
+init : Flags -> Location -> ( Model, Cmd Msg )
-init flags =
+init flags location =
-    ( Model [] [] [] [] flags allDaysDay (Filter [] []) Nothing, sendInitMessage flags.camp_slug )
+    ( Model [] [] [] [] flags allDaysDay (Filter [] []) (parseLocation location), sendInitMessage flags.camp_slug )
 
 
 sendInitMessage : String -> Cmd Msg
@@ -135,8 +190,7 @@ type Msg
     | MakeActiveday Day
     | ToggleEventTypeFilter EventType
     | ToggleEventLocationFilter EventLocation
-    | OpenEventInstanceDetail EventInstance
+    | OnLocationChange Location
-    | CloseEventInstanceDetail
 
 
 update : Msg -> Model -> ( Model, Cmd Msg )
@@ -150,7 +204,7 @@ update msg model =
                 newModel =
                     case Json.Decode.decodeString initDataDecoder str of
                         Ok m ->
-                            m model.flags allDaysDay (Filter [] []) Nothing
+                            m model.flags allDaysDay (Filter [] []) model.route
 
                         Err error ->
                             model
@@ -192,11 +246,12 @@ update msg model =
             in
                 { model | filter = newFilter } ! []
 
-        OpenEventInstanceDetail eventInstance ->
+        OnLocationChange location ->
-            { model | activeEventInstance = Just eventInstance } ! []
+            let
-
+                newRoute =
-        CloseEventInstanceDetail ->
+                    parseLocation location
-            { model | activeEventInstance = Nothing } ! []
+            in
+                { model | route = newRoute } ! []
 
 
 
@@ -265,7 +320,7 @@ eventTypeDecoder =
         |> required "light_text" bool
 
 
-initDataDecoder : Decoder (Flags -> Day -> Filter -> Maybe EventInstance -> Model)
+initDataDecoder : Decoder (Flags -> Day -> Filter -> Route -> Model)
 initDataDecoder =
     decode Model
         |> required "days" (list dayDecoder)
@@ -300,20 +355,32 @@ view model =
                 (List.map (\day -> dayButton day model.activeDay) (allDaysDay :: model.days))
             ]
         , hr [] []
-        , case model.activeEventInstance of
+        , case model.route of
-            Just eventInstance ->
+            OverviewRoute ->
-                eventInstanceDetailView eventInstance
-
-            Nothing ->
                 scheduleOverviewView model
+
+            EventInstanceRoute eventInstanceId ->
+                eventInstanceDetailView eventInstanceId model.eventInstances
+
+            NotFoundRoute ->
+                div [] [ text "Not found!" ]
         ]
 
 
-eventInstanceDetailView : EventInstance -> Html Msg
+eventInstanceDetailView : EventInstanceId -> List EventInstance -> Html Msg
-eventInstanceDetailView eventInstance =
+eventInstanceDetailView eventInstanceId eventInstances =
+    let
+        eventInstance =
+            case List.head (List.filter (\e -> e.id == eventInstanceId) eventInstances) of
+                Just eventInstance ->
+                    eventInstance
+
+                Nothing ->
+                    emptyEventInstance
+    in
         div [ class "row" ]
             [ div [ class "col-sm-9" ]
-            [ div [ onClick CloseEventInstanceDetail ]
+                [ a [ href "#" ]
                     [ text "Back"
                     ]
                 , h4 [] [ text eventInstance.title ]
@@ -397,7 +464,7 @@ dayEventInstanceView : EventInstance -> Html Msg
 dayEventInstanceView eventInstance =
     a
         [ class "event"
-        , onClick (OpenEventInstanceDetail eventInstance)
+        , href ("#event/" ++ (toString eventInstance.id))
         , style
             [ ( "background-color", eventInstance.backgroundColor )
             , ( "color", eventInstance.forgroundColor )

schedule/elm-package.json

@@ -11,8 +11,10 @@
         "NoRedInk/elm-decode-pipeline": "3.0.0 <= v < 4.0.0",
         "elm-lang/core": "5.1.1 <= v < 6.0.0",
         "elm-lang/html": "2.0.0 <= v < 3.0.0",
+        "elm-lang/navigation": "2.1.0 <= v < 3.0.0",
         "elm-lang/websocket": "1.0.2 <= v < 2.0.0",
-        "evancz/elm-markdown": "3.0.2 <= v < 4.0.0"
+        "evancz/elm-markdown": "3.0.2 <= v < 4.0.0",
+        "evancz/url-parser": "2.0.1 <= v < 3.0.0"
     },
     "elm-version": "0.18.0 <= v < 0.19.0"
 }