fe: extract Point into a module

frontend/src/Main.elm

@@ -9,6 +9,7 @@ import Html.Events.Extra.Pointer as Pointer
 import Maybe exposing (Maybe)
 import Json.Decode as D
 import Http
+import Point exposing(Point, Pos ,decoder)
 import Svg exposing (Svg, svg, rect, circle, g, polyline)
 import Svg.Attributes as S exposing
     ( viewBox
@@ -153,42 +154,9 @@ fetchTrack start duration = Http.get
                      String.fromInt start ++
                      "&duration=" ++
                      String.fromInt duration)
-        , expect = Http.expectJson Loaded trackDecoder
+        , expect = Http.expectJson Loaded (D.list Point.decoder)
         }
 
-type alias Pos =
-    { lat : Float
-    , lon : Float
-    , ele : Maybe Float
-    }
-
-
-type alias Point =
-    { time : Float
-    , pos : Pos
-    , cadence : Maybe Int
-    , power : Maybe Int
-    , heartRate : Maybe Int
-    }
-
-posDecoder : D.Decoder Pos
-posDecoder = D.map3 Pos
-             (D.field "lat" D.float)
-             (D.field "lon" D.float)
-             (D.field "ele" (D.maybe D.float))
-
-
-pointDecoder : D.Decoder Point
-pointDecoder = D.map5 Point
-               (D.field "time" D.float)
-               (D.field "pos" posDecoder)
-               (D.field "cadence" (D.maybe D.int))
-               (D.field "power" (D.maybe D.int))
-               (D.field "heartRate" (D.maybe D.int))
-
-trackDecoder : D.Decoder (List Point)
-trackDecoder = D.list pointDecoder
-
 
 
 -- UPDATE

frontend/src/Point.elm

@@ -0,0 +1,33 @@
+module Point exposing(Pos, Point, decoder)
+
+import Json.Decode as D
+
+type alias Pos =
+    { lat : Float
+    , lon : Float
+    , ele : Maybe Float
+    }
+
+
+type alias Point =
+    { time : Float
+    , pos : Pos
+    , cadence : Maybe Int
+    , power : Maybe Int
+    , heartRate : Maybe Int
+    }
+
+posDecoder : D.Decoder Pos
+posDecoder = D.map3 Pos
+             (D.field "lat" D.float)
+             (D.field "lon" D.float)
+             (D.field "ele" (D.maybe D.float))
+
+
+decoder : D.Decoder Point
+decoder = D.map5 Point
+          (D.field "time" D.float)
+          (D.field "pos" posDecoder)
+          (D.field "cadence" (D.maybe D.int))
+          (D.field "power" (D.maybe D.int))
+          (D.field "heartRate" (D.maybe D.int))