CREATE TABLE IF NOT EXISTS users (
  id TEXT PRIMARY KEY,
  username TEXT NOT NULL UNIQUE,
  password_hash TEXT NOT NULL,
  is_admin INTEGER NOT NULL DEFAULT 0,
  created_at TEXT NOT NULL,
  last_login_at TEXT
);

CREATE TABLE IF NOT EXISTS sessions (
  token TEXT PRIMARY KEY,
  user_id TEXT NOT NULL,
  created_at TEXT NOT NULL,
  expires_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS library_roots (
  id TEXT PRIMARY KEY,
  path TEXT NOT NULL UNIQUE,
  created_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS artists (
  id TEXT PRIMARY KEY,
  name TEXT NOT NULL,
  sort_name TEXT,
  cover_art_id TEXT,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS albums (
  id TEXT PRIMARY KEY,
  artist_id TEXT NOT NULL,
  title TEXT NOT NULL,
  sort_title TEXT,
  year INTEGER,
  genre TEXT,
  cover_art_id TEXT,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS tracks (
  id TEXT PRIMARY KEY,
  album_id TEXT NOT NULL,
  artist_id TEXT NOT NULL,
  title TEXT NOT NULL,
  track_number INTEGER,
  disc_number INTEGER,
  duration_seconds INTEGER,
  file_path TEXT NOT NULL UNIQUE,
  content_type TEXT,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS playlists (
  id TEXT PRIMARY KEY,
  user_id TEXT NOT NULL,
  name TEXT NOT NULL,
  comment TEXT,
  public INTEGER NOT NULL DEFAULT 0,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS playlist_tracks (
  playlist_id TEXT NOT NULL,
  track_id TEXT NOT NULL,
  position INTEGER NOT NULL,
  PRIMARY KEY (playlist_id, position)
);

CREATE TABLE IF NOT EXISTS favorites (
  user_id TEXT NOT NULL,
  entity_id TEXT NOT NULL,
  entity_type TEXT NOT NULL,
  created_at TEXT NOT NULL,
  PRIMARY KEY (user_id, entity_id, entity_type)
);

CREATE INDEX IF NOT EXISTS idx_users_username ON users(username);
CREATE INDEX IF NOT EXISTS idx_sessions_user_id ON sessions(user_id);
CREATE INDEX IF NOT EXISTS idx_albums_artist_id ON albums(artist_id);
CREATE INDEX IF NOT EXISTS idx_tracks_album_id ON tracks(album_id);
CREATE INDEX IF NOT EXISTS idx_tracks_artist_id ON tracks(artist_id);