zeppelin/backend/ormconfig.js

const fs = require('fs');
const path = require('path');

try {
  fs.accessSync(path.resolve(__dirname, 'bot.env'));
  require('dotenv').config({ path: path.resolve(__dirname, 'bot.env') });
} catch {
  try {
    fs.accessSync(path.resolve(__dirname, 'api.env'));
    require('dotenv').config({ path: path.resolve(__dirname, 'api.env') });
  } catch {
    throw new Error("bot.env or api.env required");
  }
}

const moment = require('moment-timezone');
moment.tz.setDefault('UTC');

const entities = path.relative(process.cwd(), path.resolve(__dirname, 'dist/backend/src/data/entities/*.js'));
const migrations = path.relative(process.cwd(), path.resolve(__dirname, 'dist/backend/src/migrations/*.js'));
const migrationsDir = path.relative(process.cwd(), path.resolve(__dirname, 'src/migrations'));

module.exports = {
  type: "mysql",
  host: process.env.DB_HOST,
  username: process.env.DB_USER,
  password: process.env.DB_PASSWORD,
  database: process.env.DB_DATABASE,
  charset: 'utf8mb4',
  supportBigNumbers: true,
  bigNumberStrings: true,
  dateStrings: true,
  synchronize: false,
  connectTimeout: 2000,

  // Entities
  entities: [entities],

  // Pool options
  extra: {
    typeCast(field, next) {
      if (field.type === 'DATETIME') {
        const val = field.string();
        return val != null ? moment.utc(val).format('YYYY-MM-DD HH:mm:ss') : null;
      }

      return next();
    }
  },

  // Migrations
  migrations: [migrations],
  cli: {
    migrationsDir,
  },
};