import { MigrationInterface, QueryRunner, Table, TableColumn } from 'typeorm';

export class initialize1625694002469 implements MigrationInterface {
  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
      CREATE SEQUENCE items_serial 
        AS bigint 
        MINVALUE 140000000000 
        START WITH 140000000000;
    `);

    const items = new Table();
    items.name = 'item';
    const iid = new TableColumn();
    iid.name = 'id';
    iid.type = 'bigint';
    iid.default = "nextval('items_serial')";
    iid.isPrimary = true;
    iid.isUnique = true;
    iid.isNullable = false;
    items.addColumn(iid);
    const iname = new TableColumn();
    iname.name = 'name';
    iname.type = 'varchar(40)';
    iname.isNullable = false;
    items.addColumn(iname);
    const inotes = new TableColumn();
    inotes.name = 'notes';
    inotes.type = 'varchar(255)';
    inotes.isNullable = true;
    items.addColumn(inotes);

    await queryRunner.createTable(items);
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.dropTable('items');
    await queryRunner.query(`
      DROP SEQUENCE items_serial;
    `);
  }
}