All files / src/database/seeds seed-validation.service.ts

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import { Injectable, Logger } from '@nestjs/common';
import { Connection } from 'mongoose';
import { InjectConnection } from '@nestjs/mongoose';
 
@Injectable()
export class SeedValidationService {
  private readonly logger = new Logger(SeedValidationService.name);
 
  constructor(@InjectConnection() private readonly connection: Connection) {}
 
  async validateSeededData(): Promise<{
    success: boolean;
    warnings: string[];
  }> {
    this.logger.log('Starting seed verification checks...');
    const warnings: string[] = [];
 
    const collections = this.connection.collections;
    // Check that at least countries and currencies exist
    if (collections['mdm_countries']) {
      const countryCount = await collections['mdm_countries'].countDocuments();
      if (countryCount === 0)
        warnings.push('mdm_countries collection is empty!');
    }
    if (collections['mdm_currencies']) {
      const currencyCount =
        await collections['mdm_currencies'].countDocuments();
      if (currencyCount === 0)
        warnings.push('mdm_currencies collection is empty!');
    }
 
    const success = warnings.length === 0;
    if (success) {
      this.logger.log('Seeded data validation passed successfully.');
    } else {
      this.logger.warn(
        `Verification checks finished with warnings: ${warnings.join(', ')}`,
      );
    }
 
    return { success, warnings };
  }
}