import { pgTable, serial, integer, text, real, timestamp, index, primaryKey, uniqueIndex } from 'drizzle-orm/pg-core';
import { users } from 'officerdb/auth/schema';

// Per-user music favorites. `key` is an opaque path the app supplies and the server never interprets:
//   track  → homePath  "Music/<rel>/<file>"   (also the /stream path + RNTP queue id)
//   album  → music-rel "Albums/AC-DC/[1980] Back in Black"
//   artist → music-rel "Albums/AC-DC"
export const musicFavorites = pgTable(
  'music_favorites',
  {
    id: serial('id').primaryKey(),
    userId: integer('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    kind: text('kind').notNull(), // 'track' | 'album' | 'artist'
    key: text('key').notNull(),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    uniqueIndex('uq_music_favorites_user_kind_key').on(t.userId, t.kind, t.key),
    index('idx_music_favorites_user_kind').on(t.userId, t.kind),
  ],
);

// Per-user named playlists (header) + their ordered items (below). Like favorites, an item `key` is the
// opaque track homePath "Music/<rel>/<file>" the app supplies — the server never interprets it. A playlist
// name is unique per user; items are position-ordered and MAY repeat (a track can appear twice).
export const musicPlaylists = pgTable(
  'music_playlists',
  {
    id: serial('id').primaryKey(),
    userId: integer('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    name: text('name').notNull(),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [uniqueIndex('uq_music_playlists_user_name').on(t.userId, t.name)],
);

// Ordered track entries of a playlist. `position` is 0-based; deletes cascade from the playlist.
export const musicPlaylistItems = pgTable(
  'music_playlist_items',
  {
    id: serial('id').primaryKey(),
    playlistId: integer('playlist_id')
      .notNull()
      .references(() => musicPlaylists.id, { onDelete: 'cascade' }),
    key: text('key').notNull(), // track homePath "Music/<rel>/<file>"
    position: integer('position').notNull(),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [index('idx_music_playlist_items_playlist').on(t.playlistId, t.position)],
);

// Per-(user, device) "currently playing" for resume-across-launch: the current track + playback
// position, plus a light metadata snapshot so the resume card renders before the library index has
// synced on a fresh device. `dir` is the folder to rebuild the album queue from ('' for a cross-album
// queue). `device` is an opaque client tag ('' = default/phone, 'web' = the browser) so each client
// keeps its OWN resume state instead of stomping a shared one. One row per (user, device) — upserted;
// the app writes it throttled while playing and on pause/track-change/close.
export const musicNowPlaying = pgTable(
  'music_now_playing',
  {
    userId: integer('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    device: text('device').notNull().default(''),
    homePath: text('home_path').notNull(),
    dir: text('dir').notNull().default(''),
    title: text('title').notNull().default(''),
    artist: text('artist').notNull().default(''),
    album: text('album').notNull().default(''),
    durationSec: real('duration_sec').notNull().default(0),
    positionSec: real('position_sec').notNull().default(0),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [primaryKey({ name: 'pk_music_now_playing', columns: [t.userId, t.device] })],
);
