synt_backend/mysql/migrations/20221227113002-alter-reminders.js

Synt light-weight node backend service

"use strict";

module.exports = {
  async up(queryInterface, Sequelize) {
    /**
     * Add altering commands here.
     *
     * Example:
     * await queryInterface.createTable('users', { id: Sequelize.INTEGER });
     */
    await queryInterface.sequelize.transaction(async (t) => {
      const [reminders] = await queryInterface.sequelize.query(
        `SELECT * FROM Reminders`,
        {
          transaction: t,
        }
      );
      await queryInterface.removeColumn("Reminders", "message", {
        transaction: t,
      });
      await queryInterface.addColumn(
        "Reminders",
        "LabelId",
        {
          type: Sequelize.INTEGER,
          allowNull: true,
          defaultValue: null,
        },
        { transaction: t }
      );

      await reminders.reduce(
        (res, reminder) =>
          res
            .then(() =>
              queryInterface.bulkInsert(
                "Labels",
                [
                  {
                    createdAt: new Date(),
                    updatedAt: new Date(),
                  },
                ],
                { transaction: t }
              )
            )
            .then((labelId) =>
              Promise.all([
                queryInterface.bulkInsert(
                  "Translations",
                  [
                    {
                      LabelId: labelId,
                      language: "en",
                      value: reminder.message,
                      createdAt: new Date(),
                      updatedAt: new Date(),
                    },
                  ],
                  { transaction: t }
                ),
                queryInterface.bulkUpdate(
                  "Reminders",
                  {
                    LabelId: labelId,
                  },
                  {
                    id: reminder.id,
                  },
                  { transaction: t }
                ),
              ])
            ),
        Promise.resolve()
      );

      await queryInterface.changeColumn(
        "Reminders",
        "LabelId",
        {
          type: Sequelize.INTEGER,
          references: {
            model: "Labels",
            key: "id",
          },
          allowNull: false,
          defaultValue: null,
          onUpdate: "CASCADE",
          onDelete: "CASCADE",
        },
        { transaction: t }
      );
    });
  },

  async down(queryInterface, Sequelize) {
    /**
     * Add reverting commands here.
     *
     * Example:
     * await queryInterface.dropTable('users');
     */
    await queryInterface.sequelize.transaction(async (t) => {
      const [reminders] = await queryInterface.sequelize.query(
        `SELECT dr.id, t.value FROM Reminders dr INNER JOIN Translations t on t.LabelId = dr.LabelId AND t.language = 'en'`,
        {
          transaction: t,
        }
      );

      await queryInterface.addColumn(
        "Reminders",
        "message",
        {
          type: Sequelize.STRING,
          allowNull: true,
        },
        { transaction: t }
      );

      await reminders.reduce(
        (res, reminder) =>
          res.then(() =>
            queryInterface.bulkUpdate(
              "Reminders",
              {
                message: reminder.value ?? "No value",
              },
              {
                id: reminder.id,
              },
              { transaction: t }
            )
          ),
        Promise.resolve()
      );

      await Promise.all([
        queryInterface.removeColumn("Reminders", "LabelId", {
          transaction: t,
        }),
        queryInterface.changeColumn(
          "Reminders",
          "message",
          {
            type: Sequelize.STRING,
            allowNull: false,
          },
          { transaction: t }
        ),
      ]);
    });
  },
};