package engine

import (
	"strings"
	"testing"

	"github.com/cdnutter/playlink/internal/store"
)

func TestMissingFromMaster(t *testing.T) {
	ev := setup(t, false)
	m, s := ev.master, ev.slave
	ev.write(m, "Caravan Palace/Robot Face/01 Lone Digger.flac", "a")
	ev.write(m, "Caravan Palace/Chronologic/Disc 1/01 Miracle.flac", "b")
	ev.write(s, "Caravan Palace/Robot Face/01 Lone Digger.flac", "a")
	ev.write(s, "Caravan Palace/Robot Face/05 Waterguns.mp3", "song")              // album in master
	ev.write(s, "Caravan Palace/robot face (Deluxe Edition)/12 Bonus.mp3", "song") // same album, other spelling
	ev.write(s, "Caravan Palace/Chronologic/Disc 2/03 Plume.mp3", "song")          // disc folders ignored
	ev.write(s, "Caravan Palace/Panic/01 Dragons.mp3", "song")                     // only the artist
	ev.write(s, "Caravan Palace/Loose.mp3", "song")                                // only the artist
	ev.write(s, "Unknown Artist/Album/Song.mp3", "song")                           // neither
	ev.scan()

	want := map[string]string{
		"Caravan Palace/Robot Face/05 Waterguns.mp3":              "album",
		"Caravan Palace/robot face (Deluxe Edition)/12 Bonus.mp3": "album",
		"Caravan Palace/Chronologic/Disc 2/03 Plume.mp3":          "album",
		"Caravan Palace/Panic/01 Dragons.mp3":                     "artist",
		"Caravan Palace/Loose.mp3":                                "artist",
		"Unknown Artist/Album/Song.mp3":                           "",
		"Caravan Palace/Robot Face/01 Lone Digger.flac":           "",
	}
	for rel, level := range want {
		mt, err := ev.st.MatchBySlave(ctx, ev.pair.ID, rel)
		if err != nil {
			t.Fatal(rel, err)
		}
		if mt.Missing != level {
			t.Errorf("%s: missing %q, want %q", rel, mt.Missing, level)
		}
	}
	mt, _ := ev.st.MatchBySlave(ctx, ev.pair.ID, "Caravan Palace/Chronologic/Disc 2/03 Plume.mp3")
	if !strings.Contains(mt.Reason, `"Caravan Palace/Chronologic"`) {
		t.Errorf("reason should name the master's album folder: %q", mt.Reason)
	}

	sum, err := ev.st.Summary(ctx, ev.pair.ID)
	if err != nil || sum.Missing["album"] != 3 || sum.Missing["artist"] != 2 {
		t.Fatalf("summary %+v %v", sum.Missing, err)
	}
	if _, n, _ := ev.st.Matches(ctx, ev.pair.ID, store.MatchFilter{Status: "missing"}); n != 5 {
		t.Fatalf("missing filter: %d", n)
	}
	if _, n, _ := ev.st.Matches(ctx, ev.pair.ID, store.MatchFilter{Status: "missing_album"}); n != 3 {
		t.Fatalf("missing_album filter: %d", n)
	}

	// Once the master gets the song, it is no longer missing.
	ev.write(m, "Caravan Palace/Robot Face/05 Waterguns.mp3", "song")
	ev.scan()
	if mt, _ := ev.st.MatchBySlave(ctx, ev.pair.ID, "Caravan Palace/Robot Face/05 Waterguns.mp3"); mt.Missing != "" || mt.Status == store.StatusUnmatched {
		t.Fatalf("now in master: %+v", mt)
	}
}