2 files changed, 33 insertions, 1 deletions
diff --git a/server/internal/api/api.go b/server/internal/api/api.go
index e50c94e..0aeef8a 100644
--- a/server/internal/api/api.go
+++ b/server/internal/api/api.go
@@ -74,6 +74,10 @@ type breakRange struct {
 	StartMs int64  `json:"startMs"`
 	EndMs   int64  `json:"endMs"`
 	Kind    string `json:"kind,omitempty"`
+	// Partners is how many other episodes were found to carry this audio. The phone shows it
+	// when a break is tapped: it is the only evidence a listener can weigh before deciding
+	// whether the detector got this one right.
+	Partners int `json:"partners,omitempty"`
 }
 
 // Handler returns the routed, authenticated handler.
@@ -164,7 +168,12 @@ func (s *Server) episode(w http.ResponseWriter, r *http.Request) {
 
 	breaks := make([]breakRange, 0, len(found.Breaks))
 	for _, br := range found.Breaks {
-		breaks = append(breaks, breakRange{StartMs: br.StartMs, EndMs: br.EndMs, Kind: br.Kind})
+		breaks = append(breaks, breakRange{
+			StartMs:  br.StartMs,
+			EndMs:    br.EndMs,
+			Kind:     br.Kind,
+			Partners: br.Partners,
+		})
 	}
 	writeJSON(w, http.StatusOK, episodeResponse{
 		Status:       "ready",
diff --git a/server/internal/api/api_test.go b/server/internal/api/api_test.go
index 028bbd8..d4d3ee6 100644
--- a/server/internal/api/api_test.go
+++ b/server/internal/api/api_test.go
@@ -347,3 +347,26 @@ func seedMirrored(t *testing.T, st *store.State, audioDir, contents string) {
 func episodeID(st *store.State) string {
 	return st.Match("https://f", "g1", "", "").ID
 }
+
+// Partners -- how many other episodes carried the same audio -- is the one piece of evidence a
+// listener can judge a break by, and the phone's popup exists to show it. The server has always
+// computed and stored it; it simply never put it on the wire, so every break arrived claiming
+// nothing was known about it.
+func TestEpisodeResponseCarriesHowManyEpisodesSharedEachBreak(t *testing.T) {
+	s, st, _, audioDir := newServer(t)
+	seedMirrored(t, st, audioDir, "audio-bytes")
+	e := st.Match("https://f", "g1", "", "")
+	e.Breaks = []store.Break{{StartMs: 0, EndMs: 98_000, Kind: "ad", Partners: 6}}
+
+	rec := get(t, s, "/api/episode?feed=https://f&guid=g1")
+	var got episodeResponse
+	if err := json.Unmarshal(rec.Body.Bytes(), &got); err != nil {
+		t.Fatal(err)
+	}
+	if len(got.Breaks) == 0 {
+		t.Fatal("no breaks found")
+	}
+	if got.Breaks[0].Partners != 6 {
+		t.Errorf("partners %d, want 6", got.Breaks[0].Partners)
+	}
+}