import { DataTypes, QueryTypes, type Sequelize } from "sequelize";
export async function migrateMailboxes(database: Sequelize) {
  const query = 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, nullable = false) => ({
    type: DataTypes.UUID,
    allowNull: nullable,
    references: { model: table, key: "id" },
    onDelete: "RESTRICT",
  });
  const root = {
    id: { type: DataTypes.UUID, primaryKey: true },
    companyId: fk("companies"),
    values: { type: DataTypes.JSON, allowNull: false },
  };
  for (const [table, columns] of [
    [
      "mailboxes",
      {
        ...root,
        accountId: fk("access_items", true),
        addressKey: { type: DataTypes.STRING(300), allowNull: false, unique: true },
      },
    ],
    ["mailbox_uses", { ...root, mailboxId: fk("mailboxes"), personId: fk("company_contacts") }],
    [
      "mailbox_revisions",
      {
        id: root.id,
        itemId: fk("mailboxes"),
        position: { type: DataTypes.INTEGER, allowNull: false },
        values: root.values,
        actorId: fk("users"),
        recordedAt: { type: DataTypes.STRING(24), allowNull: false },
      },
    ],
    [
      "mailbox_use_revisions",
      {
        id: root.id,
        itemId: fk("mailbox_uses"),
        position: { type: DataTypes.INTEGER, allowNull: false },
        values: root.values,
        actorId: fk("users"),
        recordedAt: { type: DataTypes.STRING(24), allowNull: false },
      },
    ],
  ] as const) {
    if (!tables.some((row) => row.name === table)) {
      await query.createTable(table, columns);
    }
  }
  for (const table of ["mailbox_revisions", "mailbox_use_revisions"]) {
    const indexes = await database.query<{ name: string }>(
      "SELECT DISTINCT INDEX_NAME AS name FROM information_schema.STATISTICS WHERE TABLE_SCHEMA=DATABASE() AND TABLE_NAME=:table",
      { replacements: { table }, type: QueryTypes.SELECT }
    );
    if (!indexes.some((item) => item.name === `${table}_position`)) {
      await query.addIndex(table, ["itemId", "position"], {
        unique: true,
        name: `${table}_position`,
      });
    }
  }
}