Details pane: director and cast from Trakt

With a Trakt client ID, the details of a movie or series show the
director(s) or creators and up to 8 cast members with their roles below
the plot, in every view. The title is found on Trakt by its TMDb/TVDB
(else IMDb) id, then its people are read. Casts are cached and, like
posters, only loaded once the selection rests.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/trakt/trakt_test.go

@@ -85,3 +85,55 @@ func TestCompact(t *testing.T) {
 		}
 	}
 }
+
+func TestPeople(t *testing.T) {
+	var paths []string
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		paths = append(paths, r.URL.RequestURI())
+		switch r.URL.Path {
+		case "/search/tmdb/272":
+			w.Write([]byte(`[{"type":"movie","score":1000,"movie":{"title":"Batman Begins","year":2005,"ids":{"trakt":1,"slug":"batman-begins-2005","tmdb":272}}}]`))
+		case "/movies/1/people":
+			w.Write([]byte(`{"cast":[{"character":"Bruce Wayne","characters":["Bruce Wayne","Batman"],"person":{"name":"Christian Bale","ids":{"trakt":1}}},
+				{"character":"Alfred","characters":["Alfred"],"person":{"name":"Michael Caine","ids":{"trakt":2}}}],
+				"crew":{"directing":[{"job":"Director","jobs":["Director"],"person":{"name":"Christopher Nolan"}},{"job":"Assistant Director","jobs":["Assistant Director"],"person":{"name":"Someone"}}],
+				"writing":[{"job":"Screenplay","jobs":["Screenplay"],"person":{"name":"David S. Goyer"}}]}}`))
+		case "/search/tvdb/81189":
+			w.Write([]byte(`[{"type":"show","score":1000,"show":{"title":"Breaking Bad","year":2008,"ids":{"trakt":1388,"tvdb":81189}}}]`))
+		case "/shows/1388/people":
+			w.Write([]byte(`{"cast":[{"character":"Walter White","characters":["Walter White"],"episode_count":62,"person":{"name":"Bryan Cranston"}}],
+				"crew":{"created by":[{"job":"Creator","jobs":["Creator"],"person":{"name":"Vince Gilligan"}}]}}`))
+		case "/search/tmdb/5":
+			w.Write([]byte(`[]`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer srv.Close()
+	c := NewClient("id", "ua")
+	c.SetBaseURL(srv.URL)
+
+	movie, err := c.People(context.Background(), Ref{Kind: Movies, TMDB: 272, IMDB: "tt0372784"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(movie.Cast) != 2 || movie.Cast[0].Name != "Christian Bale" || movie.Cast[0].Role != "Bruce Wayne / Batman" {
+		t.Errorf("cast %+v", movie.Cast)
+	}
+	if len(movie.Leaders) != 1 || movie.Leaders[0].Name != "Christopher Nolan" {
+		t.Errorf("directors %+v", movie.Leaders)
+	}
+	if paths[0] != "/search/tmdb/272?type=movie" {
+		t.Errorf("lookup %q", paths[0])
+	}
+	show, err := c.People(context.Background(), Ref{Kind: Shows, TVDB: 81189})
+	if err != nil || show.Cast[0].Name != "Bryan Cranston" || len(show.Leaders) != 1 || show.Leaders[0].Name != "Vince Gilligan" {
+		t.Errorf("show %+v %v", show, err)
+	}
+	if _, err := c.People(context.Background(), Ref{Kind: Movies, TMDB: 5}); !errors.Is(err, ErrNotFound) {
+		t.Errorf("unknown title: %v", err)
+	}
+	if (Ref{Kind: Shows, TVDB: 81189}).Key() != "show:tvdb:81189" || (Ref{Kind: Movies}).Key() != "" {
+		t.Error("keys")
+	}
+}