feat: add now playing endpoint and ui (#93)

* wip

* feat: add now playing

engine/handlers/lbz_submit_listen.go

@@ -211,10 +211,8 @@ func LbzSubmitListenHandler(store db.DB, mbzc mbz.MusicBrainzCaller) func(w http
 				Time:               listenedAt,
 				UserID:             u.ID,
 				Client:             client,
-			}
-
-			if req.ListenType == ListenTypePlayingNow {
-				opts.SkipSaveListen = true
+				IsNowPlaying:       req.ListenType == ListenTypePlayingNow,
+				SkipSaveListen:     req.ListenType == ListenTypePlayingNow,
 			}
 
 			_, err, shared := sfGroup.Do(buildCaolescingKey(payload), func() (interface{}, error) {

engine/handlers/now_playing.go

@@ -0,0 +1,41 @@
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/gabehf/koito/internal/db"
+	"github.com/gabehf/koito/internal/logger"
+	"github.com/gabehf/koito/internal/memkv"
+	"github.com/gabehf/koito/internal/models"
+	"github.com/gabehf/koito/internal/utils"
+)
+
+type NowPlayingResponse struct {
+	CurrentlyPlaying bool         `json:"currently_playing"`
+	Track            models.Track `json:"track"`
+}
+
+func NowPlayingHandler(store db.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		ctx := r.Context()
+		l := logger.FromContext(ctx)
+
+		l.Debug().Msg("NowPlayingHandler: Got request")
+
+		// Hardcoded user id as 1. Not great but it works until (if) multi-user is supported.
+		if trackIdI, ok := memkv.Store.Get("1"); !ok {
+			utils.WriteJSON(w, http.StatusOK, NowPlayingResponse{CurrentlyPlaying: false})
+		} else if trackId, ok := trackIdI.(int32); !ok {
+			l.Debug().Msg("NowPlayingHandler: Failed type assertion for trackIdI")
+			utils.WriteError(w, "internal server error", http.StatusInternalServerError)
+		} else {
+			track, err := store.GetTrack(ctx, db.GetTrackOpts{ID: trackId})
+			if err != nil {
+				l.Error().Err(err).Msg("NowPlayingHandler: Failed to get track from database")
+				utils.WriteError(w, "failed to fetch currently playing track from database", http.StatusInternalServerError)
+			} else {
+				utils.WriteJSON(w, http.StatusOK, NowPlayingResponse{CurrentlyPlaying: true, Track: *track})
+			}
+		}
+	}
+}

engine/long_test.go

@@ -917,3 +917,60 @@ func TestManualListen(t *testing.T) {
 	require.NoError(t, err)
 	assert.Equal(t, http.StatusBadRequest, resp.StatusCode)
 }
+
+func TestNowPlaying(t *testing.T) {
+
+	t.Run("Submit Listens", doSubmitListens)
+
+	// no playing
+	resp, err := http.DefaultClient.Get(host() + "/apis/web/v1/now-playing")
+	require.NoError(t, err)
+	assert.Equal(t, http.StatusOK, resp.StatusCode)
+	var result handlers.NowPlayingResponse
+	require.NoError(t, json.NewDecoder(resp.Body).Decode(&result))
+	require.False(t, result.CurrentlyPlaying)
+
+	body := `{
+		"listen_type": "playing_now",
+		"payload": [
+			{
+				"track_metadata": {
+					"additional_info": {
+						"artist_mbids": [
+							"efc787f0-046f-4a60-beff-77b398c8cdf4"
+						],
+						"artist_names": [
+							"さユり"
+						],
+						"duration_ms": 275960,
+						"recording_mbid": "21524d55-b1f8-45d1-b172-976cba447199",
+						"release_group_mbid": "3281e0d9-fa44-4337-a8ce-6f264beeae16",
+						"release_mbid": "eb790e90-0065-4852-b47d-bbeede4aa9fc",
+						"submission_client": "navidrome",
+						"submission_client_version": "0.56.1 (fa2cf362)"
+					},
+					"artist_name": "さユり",
+					"release_name": "酸欠少女",
+					"track_name": "花の塔"
+				}
+			}
+		]
+	}`
+
+	req, err := http.NewRequest("POST", host()+"/apis/listenbrainz/1/submit-listens", strings.NewReader(body))
+	require.NoError(t, err)
+	req.Header.Add("Authorization", fmt.Sprintf("Token %s", apikey))
+	resp, err = http.DefaultClient.Do(req)
+	require.NoError(t, err)
+	respBytes, err := io.ReadAll(resp.Body)
+	require.NoError(t, err)
+	assert.Equal(t, `{"status": "ok"}`, string(respBytes))
+
+	// yes playing
+	resp, err = http.DefaultClient.Get(host() + "/apis/web/v1/now-playing")
+	require.NoError(t, err)
+	assert.Equal(t, http.StatusOK, resp.StatusCode)
+	require.NoError(t, json.NewDecoder(resp.Body).Decode(&result))
+	require.True(t, result.CurrentlyPlaying)
+	require.Equal(t, "花の塔", result.Track.Title)
+}

engine/routes.go

@@ -45,6 +45,7 @@ func bindRoutes(
 		r.Get("/top-artists", handlers.GetTopArtistsHandler(db))
 		r.Get("/listens", handlers.GetListensHandler(db))
 		r.Get("/listen-activity", handlers.GetListenActivityHandler(db))
+		r.Get("/now-playing", handlers.NowPlayingHandler(db))
 		r.Get("/stats", handlers.StatsHandler(db))
 		r.Get("/search", handlers.SearchHandler(db))
 		r.Get("/aliases", handlers.GetAliasesHandler(db))