import { Injectable, Logger } from '@nestjs/common';
import { InjectRepository } from '@nestjs/typeorm';
import { Repository } from 'typeorm';
import { AuditLog } from '../entities/audit-log.entity';

@Injectable()
export class AuditLogService {
  private readonly logger = new Logger(AuditLogService.name);

  constructor(
    @InjectRepository(AuditLog)
    private auditLogRepository: Repository<AuditLog>,
  ) {}

  async log(params: {
    userId: string;
    tenantId?: string;
    action: string;
    resourceType: string;
    resourceId?: string;
    details?: any;
  }): Promise<void> {
    try {
      const entry = this.auditLogRepository.create({
        userId: params.userId,
        tenantId: params.tenantId,
        action: params.action,
        resourceType: params.resourceType,
        resourceId: params.resourceId,
        details: params.details,
      });
      await this.auditLogRepository.insert(entry);
    } catch (error) {
      this.logger.error(`Failed to write audit log: ${error.message}`);
    }
  }
}