import { Logger, Module, OnModuleInit } from '@nestjs/common';
import { ModuleRegistryModule } from '../module-registry/module-registry.module';
import { ModuleRegistryService } from '../module-registry/module-registry.service';
import { CertManagerController } from './cert-manager.controller';
import { seedCertManagerModule } from './cert-manager.seed';
import { CertManagerService } from './cert-manager.service';

/**
 * NestJS module for the Cert Manager feature.
 *
 * Provides server-side certificate inspection, splitting, merging,
 * and format conversion using node-forge (pure JS, no native bindings).
 *
 * Seeds itself into the module registry on application startup via
 * OnModuleInit lifecycle hook (CERT-06).
 *
 * After seeding: an admin must activate the module per-tenant via the
 * Marketplace UI before endpoints become accessible (ModuleGuard checks
 * TenantModuleActivation, not isSystem flag — RESEARCH.md Pitfall 2).
 */
@Module({
  imports: [ModuleRegistryModule],
  controllers: [CertManagerController],
  providers: [CertManagerService],
})
export class CertManagerModule implements OnModuleInit {
  private readonly logger = new Logger(CertManagerModule.name);

  constructor(
    private readonly moduleRegistryService: ModuleRegistryService,
  ) {}

  async onModuleInit(): Promise<void> {
    try {
      await seedCertManagerModule(this.moduleRegistryService);
      this.logger.log('Cert-Manager module seeded in registry');
    } catch (error) {
      this.logger.error('Failed to seed cert-manager module', error);
    }
  }
}