module.exports = {
  up: async (queryInterface, Sequelize) => {

    await queryInterface.addColumn('documents', 'publishedAt', {
      type: Sequelize.DATE,
      allowNull: true,
    });

    const [documents, metaData] = await queryInterface.sequelize.query(`SELECT * FROM documents`);
    for (const document of documents) {
      await queryInterface.sequelize.query(`
        update documents
        set "publishedAt" = '${new Date(document.createdAt).toISOString()}'
        where id  = '${document.id}'
      `)
    }

    await queryInterface.removeIndex('documents', ['id', 'atlasId']);
    await queryInterface.addIndex('documents', ['id', 'atlasId', 'publishedAt']);
  },

  down: async (queryInterface, Sequelize) => {
    await queryInterface.removeColumn('documents', 'publishedAt');
    await queryInterface.removeIndex('documents', ['id', 'atlasId', 'publishedAt']);
    await queryInterface.addIndex('documents', ['id', 'atlasId']);
  }
};