import { sql } from 'drizzle-orm';
import {
  boolean,
  customType,
  index,
  integer,
  jsonb,
  pgTable,
  primaryKey,
  text,
  timestamp,
  uniqueIndex,
  uuid,
  varchar,
} from 'drizzle-orm/pg-core';
import type { NowPlayingProvider, Plan, ReportReason, StreamingService } from '@musicshare/shared';

const createdAt = () => timestamp('created_at', { withTimezone: true }).notNull().defaultNow();

export const users = pgTable('users', {
  id: uuid('id').primaryKey().defaultRandom(),
  username: varchar('username', { length: 32 }).notNull().unique(),
  email: varchar('email', { length: 320 }).notNull().unique(),
  passwordHash: text('password_hash').notNull(),
  /** Set once they click the link we email them; null until then. */
  emailVerifiedAt: timestamp('email_verified_at', { withTimezone: true }),
  /** A new address waiting for its confirmation link; `email` changes only once it's clicked. */
  pendingEmail: varchar('pending_email', { length: 320 }),
  displayName: varchar('display_name', { length: 64 }),
  bio: varchar('bio', { length: 280 }),
  /** Path of the uploaded picture (`/avatars/<id>?v=<version>`), resolved against API_PUBLIC_URL when sent. */
  avatarUrl: varchar('avatar_url', { length: 500 }),
  preferredService: text('preferred_service').$type<StreamingService>(),
  /** The services they use, so songs only offer those; null until they choose (offer all). */
  services: text('services').array().$type<StreamingService[]>(),
  /** Billing plan. Kept in sync by the billing webhook (RevenueCat/Stripe) — see lib/entitlements.ts */
  /** The first account on a server becomes admin (moderation). */
  role: text('role').$type<'user' | 'admin'>().notNull().default('user'),
  /** Suspended by a moderator: can't sign in, profile hidden, sharing stopped. */
  suspendedAt: timestamp('suspended_at', { withTimezone: true }),
  /** Set when the user finishes (or skips through) onboarding; null shows it on next launch. */
  onboardedAt: timestamp('onboarded_at', { withTimezone: true }),
  /** While in the future, nothing new is shared: services aren't polled and phone reports are dropped. */
  sharingPausedUntil: timestamp('sharing_paused_until', { withTimezone: true }),
  plan: text('plan').$type<Plan>().notNull().default('free'),
  planExpiresAt: timestamp('plan_expires_at', { withTimezone: true }),
  createdAt: createdAt(),
});

export const sessions = pgTable(
  'sessions',
  {
    /** sha256 of the session token; the raw token only lives in the client. */
    id: text('id').primaryKey(),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    expiresAt: timestamp('expires_at', { withTimezone: true }).notNull(),
    createdAt: createdAt(),
  },
  (t) => [index('sessions_user_idx').on(t.userId)],
);

export const follows = pgTable(
  'follows',
  {
    followerId: uuid('follower_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    followeeId: uuid('followee_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    /** Set when the follower pins this friend to the top of their feed. */
    pinnedAt: timestamp('pinned_at', { withTimezone: true }),
    createdAt: createdAt(),
  },
  (t) => [primaryKey({ columns: [t.followerId, t.followeeId] }), index('follows_followee_idx').on(t.followeeId)],
);

/** Blocking removes follows both ways and hides each user from the other. */
export const blocks = pgTable(
  'blocks',
  {
    blockerId: uuid('blocker_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    blockedId: uuid('blocked_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    createdAt: createdAt(),
  },
  (t) => [primaryKey({ columns: [t.blockerId, t.blockedId] }), index('blocks_blocked_idx').on(t.blockedId)],
);

/** User reports for moderation (App Store guideline 1.2 requires a way to report users). */
export const reports = pgTable(
  'reports',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    reporterId: uuid('reporter_id').references(() => users.id, { onDelete: 'set null' }),
    reportedId: uuid('reported_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    reason: text('reason').$type<ReportReason>().notNull(),
    note: varchar('note', { length: 500 }),
    status: text('status').$type<'open' | 'resolved'>().notNull().default('open'),
    createdAt: createdAt(),
  },
  (t) => [index('reports_status_idx').on(t.status)],
);

export const connections = pgTable(
  'connections',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    provider: text('provider').$type<NowPlayingProvider>().notNull(),
    externalUserId: text('external_user_id').notNull(),
    displayName: text('display_name'),
    /** AES-256-GCM encrypted, see lib/crypto.ts */
    accessTokenEnc: text('access_token_enc'),
    refreshTokenEnc: text('refresh_token_enc'),
    tokenExpiresAt: timestamp('token_expires_at', { withTimezone: true }),
    status: text('status').$type<'active' | 'error'>().notNull().default('active'),
    lastError: text('last_error'),
    lastPolledAt: timestamp('last_polled_at', { withTimezone: true }),
    /** Last time this connection reported something playing; used to spot links that silently broke. */
    lastActivityAt: timestamp('last_activity_at', { withTimezone: true }),
    /** Provider-specific state, e.g. Jellyfin server URL or discovered Plex servers. */
    meta: jsonb('meta').$type<Record<string, unknown>>().notNull().default({}),
    /** Secret path segment for inbound webhooks (/webhooks/:provider/:secret). */
    webhookSecret: text('webhook_secret').unique(),
    createdAt: createdAt(),
  },
  (t) => [uniqueIndex('connections_user_provider_idx').on(t.userId, t.provider)],
);

export const tracks = pgTable(
  'tracks',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    isrc: varchar('isrc', { length: 12 }),
    /** normalized "artist|title", used to dedupe tracks that arrive without an ISRC */
    matchKey: text('match_key').notNull(),
    title: text('title').notNull(),
    artist: text('artist').notNull(),
    album: text('album'),
    durationMs: integer('duration_ms'),
    artworkUrl: text('artwork_url'),
    linksResolvedAt: timestamp('links_resolved_at', { withTimezone: true }),
    createdAt: createdAt(),
  },
  (t) => [index('tracks_isrc_idx').on(t.isrc), index('tracks_match_key_idx').on(t.matchKey)],
);

export const trackLinks = pgTable(
  'track_links',
  {
    trackId: uuid('track_id')
      .notNull()
      .references(() => tracks.id, { onDelete: 'cascade' }),
    service: text('service').$type<StreamingService>().notNull(),
    externalId: text('external_id'),
    url: text('url').notNull(),
    /** how we found it: straight from the provider, via ISRC, fuzzy search, or song.link */
    matchType: text('match_type').$type<'provider' | 'isrc' | 'search' | 'odesli'>().notNull(),
    createdAt: createdAt(),
  },
  (t) => [
    primaryKey({ columns: [t.trackId, t.service] }),
    index('track_links_external_idx').on(t.service, t.externalId),
  ],
);

export const nowPlaying = pgTable(
  'now_playing',
  {
    userId: uuid('user_id')
      .primaryKey()
      .references(() => users.id, { onDelete: 'cascade' }),
    trackId: uuid('track_id')
      .notNull()
      .references(() => tracks.id),
    source: text('source').$type<NowPlayingProvider>().notNull(),
    /** App name when a phone reported it, e.g. "Spotify". */
    sourceApp: text('source_app'),
    /** Where the data came from, for attribution (e.g. the user's Last.fm profile). */
    sourceUrl: text('source_url'),
    isPlaying: boolean('is_playing').notNull(),
    progressMs: integer('progress_ms'),
    startedAt: timestamp('started_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [index('now_playing_track_idx').on(t.trackId)],
);

/** Phones that report playback directly (Android media sessions). Each has its own revocable token. */
export const devices = pgTable(
  'devices',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    /** sha256 of the device token; the token can only report playback. */
    tokenHash: text('token_hash').notNull().unique(),
    platform: text('platform').$type<'android' | 'ios'>().notNull(),
    name: varchar('name', { length: 100 }).notNull(),
    lastSeenAt: timestamp('last_seen_at', { withTimezone: true }),
    createdAt: createdAt(),
  },
  (t) => [index('devices_user_idx').on(t.userId)],
);

/** Recent plays per user, for "Recently played" on profiles. Trimmed to the latest LISTEN_HISTORY_LIMIT. */
export const listens = pgTable(
  'listens',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    trackId: uuid('track_id')
      .notNull()
      .references(() => tracks.id),
    source: text('source').$type<NowPlayingProvider>().notNull(),
    startedAt: timestamp('started_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [index('listens_user_started_idx').on(t.userId, t.startedAt.desc())],
);

export const featuredSongs = pgTable('featured_songs', {
  userId: uuid('user_id')
    .primaryKey()
    .references(() => users.id, { onDelete: 'cascade' }),
  trackId: uuid('track_id')
    .notNull()
    .references(() => tracks.id),
  comment: varchar('comment', { length: 280 }),
  updatedAt: timestamp('updated_at', { withTimezone: true })
    .notNull()
    .default(sql`now()`),
});

/** One emoji per person per play. Deleted with the play (only the latest 50 plays are kept). */
export const reactions = pgTable(
  'reactions',
  {
    listenId: uuid('listen_id')
      .notNull()
      .references(() => listens.id, { onDelete: 'cascade' }),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    emoji: varchar('emoji', { length: 32 }).notNull(),
    createdAt: createdAt(),
  },
  (t) => [primaryKey({ columns: [t.listenId, t.userId] })],
);

/** Email confirmation links (sign-up and email changes). Only a hash of the token is stored. */
export const emailVerifications = pgTable(
  'email_verifications',
  {
    id: text('id').primaryKey(),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    email: varchar('email', { length: 320 }).notNull(),
    expiresAt: timestamp('expires_at', { withTimezone: true }).notNull(),
    createdAt: createdAt(),
  },
  (t) => [index('email_verifications_user_idx').on(t.userId)],
);

/** One-time password reset links. Only a hash of the token is stored. */
export const passwordResets = pgTable(
  'password_resets',
  {
    id: text('id').primaryKey(),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    expiresAt: timestamp('expires_at', { withTimezone: true }).notNull(),
    usedAt: timestamp('used_at', { withTimezone: true }),
    createdAt: createdAt(),
  },
  (t) => [index('password_resets_user_idx').on(t.userId)],
);

/** Lyrics looked up per track (misses too, so we don't keep asking). */
export const lyrics = pgTable('lyrics', {
  trackId: uuid('track_id')
    .primaryKey()
    .references(() => tracks.id, { onDelete: 'cascade' }),
  /** LRC text with timestamps. */
  synced: text('synced'),
  plain: text('plain'),
  instrumental: boolean('instrumental').notNull().default(false),
  /** Where they came from (the LRCLIB record), null when none were found. */
  sourceUrl: text('source_url'),
  fetchedAt: timestamp('fetched_at', { withTimezone: true }).notNull().defaultNow(),
});

const bytea = customType<{ data: Buffer }>({ dataType: () => 'bytea' });

/** Profile pictures, already resized and re-encoded (WebP, metadata stripped). */
export const avatars = pgTable('avatars', {
  userId: uuid('user_id')
    .primaryKey()
    .references(() => users.id, { onDelete: 'cascade' }),
  image: bytea('image').notNull(),
  contentType: text('content_type').notNull(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

export type User = typeof users.$inferSelect;
export type Connection = typeof connections.$inferSelect;
export type Track = typeof tracks.$inferSelect;