import { MigrationInterface, QueryRunner, Table } from "typeorm";
import BackupHelper from "../helpers/backupHelper";
import { getDefaultByORM, getTypeByORM, isIncrementPrimary } from "./ormHelper";
import InternalException from "../exceptions/internalException";
import { DB_TYPE } from "../env.defaults";

export class BackupAndResetDatabase1738166124200 implements MigrationInterface {
  name = "BackupAndResetDatabase1738166124200";

  public async up(queryRunner: QueryRunner): Promise<void> {
    let query = DB_TYPE == "postgres" ? "SELECT name FROM migrations" : "SELECT `name` FROM `migrations`";
    let migrations = await queryRunner.query(query);
    if (
      (await queryRunner.hasTable("user")) &&
      migrations.findIndex((m: any) => m.name == "MoveSendNewsletterFlag1737816852011") == -1
    ) {
      throw new InternalException(
        "Cannot update due to skiped version. Update to v1.2.2 Version first to prevent data loss and get access to the newer Versions."
      );
    }

    if (await queryRunner.hasTable("user")) {
      await BackupHelper.createBackup({ collectIds: false });
    }
    await queryRunner.clearDatabase();

    await queryRunner.createTable(
      new Table({
        name: "migrations",
        columns: [
          { name: "id", ...getTypeByORM("int"), ...isIncrementPrimary },
          { name: "timestamp", ...getTypeByORM("bigint") },
          { name: "name", ...getTypeByORM("varchar") },
        ],
      }),
      true
    );

    await queryRunner.createTable(
      new Table({
        name: "typeorm_metadata",
        columns: [
          { name: "type", ...getTypeByORM("varchar") },
          { name: "database", ...getTypeByORM("varchar", true), default: getDefaultByORM("null") },
          { name: "schema", ...getTypeByORM("varchar", true), default: getDefaultByORM("null") },
          { name: "table", ...getTypeByORM("varchar", true), default: getDefaultByORM("null") },
          { name: "name", ...getTypeByORM("varchar", true), default: getDefaultByORM("null") },
          { name: "value", ...getTypeByORM("text", true), default: getDefaultByORM("null") },
        ],
      }),
      true
    );
  }

  public async down(queryRunner: QueryRunner): Promise<void> {}
}