import { DataTypes, QueryTypes, type Sequelize } from "sequelize";
export async function migrateMailConfigurations(database: Sequelize) {
  const query = database.getQueryInterface();
  const rows = await database.query<{ name: string }>(
    "SELECT TABLE_NAME AS name FROM information_schema.TABLES WHERE TABLE_SCHEMA=DATABASE()",
    { type: QueryTypes.SELECT }
  );
  const reference = (table: string) => ({
    type: DataTypes.UUID,
    allowNull: false,
    references: { model: table, key: "id" },
    onDelete: "RESTRICT",
  });
  if (!rows.some((row) => row.name === "mail_configurations")) {
    await query.createTable("mail_configurations", {
      id: { type: DataTypes.UUID, primaryKey: true },
      companyId: reference("companies"),
      personId: { ...reference("company_contacts"), allowNull: true },
      accountId: { ...reference("access_items"), allowNull: true },
      assetId: { ...reference("assets"), allowNull: true },
      profileId: { ...reference("work_profiles"), allowNull: true },
      mailboxId: { ...reference("mailboxes"), allowNull: true },
      values: { type: DataTypes.JSON, allowNull: false },
      currentKey: { type: DataTypes.STRING(110), allowNull: true, unique: true },
    });
  }
  if (!rows.some((row) => row.name === "mail_configuration_revisions")) {
    await query.createTable("mail_configuration_revisions", {
      id: { type: DataTypes.UUID, primaryKey: true },
      configurationId: reference("mail_configurations"),
      position: { type: DataTypes.INTEGER, allowNull: false },
      actorId: reference("users"),
      recordedAt: { type: DataTypes.STRING(24), allowNull: false },
      values: { type: DataTypes.JSON, allowNull: false },
    });
  }

  const columns = await query.describeTable("mail_configurations");
  for (const [column, table] of [
    ["personId", "company_contacts"],
    ["accountId", "access_items"],
    ["assetId", "assets"],
    ["profileId", "work_profiles"],
    ["mailboxId", "mailboxes"],
  ] as const) {
    if (!columns[column]) {
      await query.addColumn("mail_configurations", column, {
        ...reference(table),
        allowNull: true,
      });
    } else if (!columns[column].allowNull) {
      await query.changeColumn("mail_configurations", column, {
        type: DataTypes.UUID,
        allowNull: true,
      });
    }
  }
  const indexes = await database.query<{ name: string }>(
    "SELECT DISTINCT INDEX_NAME AS name FROM information_schema.STATISTICS WHERE TABLE_SCHEMA=DATABASE() AND TABLE_NAME='mail_configuration_revisions'",
    { type: QueryTypes.SELECT }
  );
  if (!indexes.some((index) => index.name === "mail_revision_position")) {
    await query.addIndex("mail_configuration_revisions", ["configurationId", "position"], {
      unique: true,
      name: "mail_revision_position",
    });
  }
}