/**
 * @type {import('node-pg-migrate').ColumnDefinitions | undefined}
 */
export const shorthands = undefined;

/**
 * @param pgm {import('node-pg-migrate').MigrationBuilder}
 * @param run {() => void | undefined}
 * @returns {Promise<void> | void}
 */
export const up = (pgm) => {
  // Create user_profiles table
  pgm.createTable('user_profiles', {
    id: {
      type: 'uuid',
      primaryKey: true,
      default: pgm.func('gen_random_uuid()'),
    },
    display_name: {
      type: 'varchar(255)',
      notNull: false,
    },
    avatar_url: {
      type: 'text',
      notNull: false,
    },
    created_at: {
      type: 'timestamp with time zone',
      notNull: true,
      default: pgm.func('now()'),
    },
    updated_at: {
      type: 'timestamp with time zone',
      notNull: true,
      default: pgm.func('now()'),
    },
  });

  // Create user_identities table
  pgm.createTable('user_identities', {
    id: {
      type: 'uuid',
      primaryKey: true,
      default: pgm.func('gen_random_uuid()'),
    },
    user_profile_id: {
      type: 'uuid',
      notNull: true,
      references: 'user_profiles(id)',
      onDelete: 'CASCADE',
    },
    provider: {
      type: 'varchar(50)',
      notNull: true,
    },
    provider_id: {
      type: 'varchar(255)',
      notNull: true,
    },
    email: {
      type: 'varchar(255)',
      notNull: false,
    },
    password_hash: {
      type: 'varchar(255)',
      notNull: false,
    },
    created_at: {
      type: 'timestamp with time zone',
      notNull: true,
      default: pgm.func('now()'),
    },
    updated_at: {
      type: 'timestamp with time zone',
      notNull: true,
      default: pgm.func('now()'),
    },
  });

  // Create unique index on email for email provider
  pgm.createIndex('user_identities', ['email'], {
    unique: true,
    where: "provider = 'email' AND email IS NOT NULL",
  });

  // Create unique index on provider and provider_id combination
  pgm.createIndex('user_identities', ['provider', 'provider_id'], {
    unique: true,
  });
};

/**
 * @param pgm {import('node-pg-migrate').MigrationBuilder}
 * @param run {() => void | undefined}
 * @returns {Promise<void> | void}
 */
export const down = (pgm) => {
  pgm.dropTable('user_identities');
  pgm.dropTable('user_profiles');
};