import * as Sequelize from 'sequelize'

async function up (utils: {
  transaction: Sequelize.Transaction
  queryInterface: Sequelize.QueryInterface
  sequelize: Sequelize.Sequelize
}): Promise<void> {
  const { transaction } = utils

  {
    const data = {
      type: Sequelize.BOOLEAN,
      allowNull: true,
      defaultValue: true
    }

    await utils.queryInterface.addColumn('thumbnail', 'onDisk', data, { transaction })
  }

  {
    // Remote previews are not on the disk
    await utils.sequelize.query(
      'UPDATE "thumbnail" SET "onDisk" = FALSE ' +
      'WHERE "type" = 2 AND "videoId" NOT IN (SELECT "id" FROM "video" WHERE "remote" IS FALSE)',
      { transaction }
    )
  }

  {
    const data = {
      type: Sequelize.BOOLEAN,
      allowNull: false,
      defaultValue: null
    }

    await utils.queryInterface.changeColumn('thumbnail', 'onDisk', data, { transaction })
  }
}

function down (options) {
  throw new Error('Not implemented.')
}

export {
  up,
  down
}