From 6e4c1b735145f7ce625e9439e6170d833acafdfb Mon Sep 17 00:00:00 2001
From: Daniel Barlow <dan@telent.net>
Date: Fri, 25 Oct 2024 21:25:20 +0100
Subject: [PATCH] add hr

---
 src/Track.elm       |  4 +++-
 tests/Fixtures.elm  |  3 +++
 tests/TrackTest.elm | 13 +++++++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/Track.elm b/src/Track.elm
index 6890f5c..ff2503a 100644
--- a/src/Track.elm
+++ b/src/Track.elm
@@ -12,6 +12,7 @@ type alias Point =
     , time : Maybe Time.Posix
     , power : Maybe Int
     , cadence : Maybe Int
+    , hr : Maybe Int
     }
 
 type alias Track =  List Point
@@ -26,12 +27,13 @@ timeDecoder = XD.andThen (\ts ->
 
 triple x y z = (x,y,z)
 
-pointDecoder = XD.map4 Point
+pointDecoder = XD.map5 Point
                (XD.map3 triple (floatAttr "lat") (floatAttr "lon")
                         (XD.maybe (path ["ele"] (single XD.float))))
                (XD.maybe (path ["time"] (single timeDecoder)))
                (XD.maybe (path ["extensions", "gpxtpx:TrackPointExtension", "pwr:PowerInWatts"] (single XD.int)))
                (XD.maybe (path ["extensions", "gpxtpx:TrackPointExtension", "gpxtpx:cad"] (single XD.int)))
+               (XD.maybe (path ["extensions", "gpxtpx:TrackPointExtension", "gpxtpx:hr"] (single XD.int)))
 
 
 gpxDecoder =
diff --git a/tests/Fixtures.elm b/tests/Fixtures.elm
index 7a63496..91e14f0 100644
--- a/tests/Fixtures.elm
+++ b/tests/Fixtures.elm
@@ -70,17 +70,20 @@ threepoints_expected  =
            (Just (Time.millisToPosix 1729669252256))
            (Just 89)
            (Just 110)
+           Nothing
       )
     , (Point
            (51.600679, -0.018179, Just 65.5)
            (Just (Time.millisToPosix 1729669255259))
            (Just 86)
            (Just 111)
+           Nothing
       )
     , (Point
            (51.600697, -0.018064, Just 66.2)
            (Just (Time.millisToPosix 1729669256231))
            (Just 86)
            (Just 111)
+           Nothing
       )
     ]
diff --git a/tests/TrackTest.elm b/tests/TrackTest.elm
index 554b950..f235352 100644
--- a/tests/TrackTest.elm
+++ b/tests/TrackTest.elm
@@ -28,6 +28,19 @@ specs =
                               (_, _, ele) -> Expect.equal ele Nothing
                       Ok _ -> Expect.fail "empty list"
                       (Err f) -> Expect.fail f
+        , test "heart rate" <|
+              \_ ->
+              let
+                  xml = String.replace
+                        "</gpxtpx:TrackPointExtension>"
+                        "<gpxtpx:hr>97</gpxtpx:hr></gpxtpx:TrackPointExtension>"
+                        Fixtures.threepoints
+              in
+                  case Track.parse xml of
+                      Ok (p::pts) ->
+                          Expect.equal p.hr (Just 97)
+                      Ok _ -> Expect.fail "no points"
+                      (Err f) -> Expect.fail f
 
         , test "multiple trksegs are coalesced" <|
               \_ ->