package database

import (
	"database/sql"
	"path/filepath"
	"testing"
)

func openTestDB(t *testing.T) *sql.DB {
	t.Helper()
	path := filepath.Join(t.TempDir(), "test.db")
	db, err := Open(path)
	if err != nil {
		t.Fatalf("Open: %v", err)
	}
	t.Cleanup(func() { db.Close() })
	return db
}

func TestOpenAppliesPragmas(t *testing.T) {
	db := openTestDB(t)

	var mode string
	if err := db.QueryRow("PRAGMA journal_mode").Scan(&mode); err != nil {
		t.Fatalf("journal_mode: %v", err)
	}
	if mode != "wal" {
		t.Errorf("journal_mode = %q, want wal", mode)
	}

	var fk int
	if err := db.QueryRow("PRAGMA foreign_keys").Scan(&fk); err != nil {
		t.Fatalf("foreign_keys: %v", err)
	}
	if fk != 1 {
		t.Errorf("foreign_keys = %d, want 1", fk)
	}
}

func TestOpenAppliesMigrations(t *testing.T) {
	db := openTestDB(t)

	tables := []string{
		"users", "sessions", "api_keys",
		"music_folders", "media_files", "scan_state",
		"artists", "genres", "albums", "album_artists", "album_genres",
		"songs", "song_artists", "contributors", "song_genres",
		"cover_art", "lyrics", "lyrics_lines", "lyrics_cues",
		"playlists", "playlist_entries",
		"stars", "ratings", "scrobbles", "playback_history", "now_playing",
		"bookmarks", "play_queues",
		"shares", "share_items",
		"podcast_channels", "podcast_episodes",
		"internet_radio_stations", "chat_messages",
		"transcode_profiles", "audio_features", "settings",
	}
	for _, name := range tables {
		var got string
		err := db.QueryRow("SELECT name FROM sqlite_master WHERE type='table' AND name=?", name).Scan(&got)
		if err != nil {
			t.Errorf("table %q missing: %v", name, err)
		}
	}
}

func TestMigrateIsIdempotent(t *testing.T) {
	db := openTestDB(t)
	if err := Migrate(db); err != nil {
		t.Fatalf("second Migrate call failed: %v", err)
	}
}

func TestForeignKeysEnforced(t *testing.T) {
	db := openTestDB(t)
	_, err := db.Exec(`INSERT INTO sessions (id, user_id, expires_at) VALUES ('s1', 'no-such-user', '2999-01-01T00:00:00Z')`)
	if err == nil {
		t.Fatal("expected foreign key violation inserting session with unknown user_id")
	}
}