metis-desk/modules/companies/src/api/infrastructure/persistence/application-configuration-migration.ts

import type { Sequelize } from "sequelize";
import { DataTypes, QueryTypes } from "sequelize";

import { applicationSnapshot } from "./configuration-snapshots";

export async function migrateApplicationConfigurations(database: Sequelize) {
  const q = database.getQueryInterface();
  const tables = await database.query<{ name: string }>(
    "SELECT TABLE_NAME AS name FROM information_schema.TABLES WHERE TABLE_SCHEMA=DATABASE()",
    { type: QueryTypes.SELECT }
  );

  const fk = (table: string) => ({
    type: DataTypes.UUID,
    allowNull: false,
    references: { model: table, key: "id" },
    onDelete: "RESTRICT",
  });

  if (!tables.some((t) => t.name === "application_configurations")) {
    await q.createTable("application_configurations", {
      id: { type: DataTypes.UUID, primaryKey: true },
      companyId: fk("companies"),
      ...applicationSnapshot.columns,
      currentKey: { type: DataTypes.STRING(80), allowNull: true, unique: true },
    });
  }
  if (!tables.some((t) => t.name === "application_configuration_revisions")) {
    await q.createTable("application_configuration_revisions", {
      id: { type: DataTypes.UUID, primaryKey: true },
      configurationId: fk("application_configurations"),
      position: { type: DataTypes.INTEGER, allowNull: false },
      ...applicationSnapshot.columns,
      actorId: fk("users"),
      recordedAt: { type: DataTypes.STRING(24), allowNull: false },
    });
  }
  const indexes = await database.query<{ name: string }>(
    "SELECT DISTINCT INDEX_NAME AS name FROM information_schema.STATISTICS WHERE TABLE_SCHEMA=DATABASE() AND TABLE_NAME='application_configuration_revisions'",
    { type: QueryTypes.SELECT }
  );

  if (!indexes.some((item) => item.name === "application_configuration_position")) {
    await q.addIndex("application_configuration_revisions", ["configurationId", "position"], {
      unique: true,
      name: "application_configuration_position",
    });
  }
}