import { BadRequestException, Injectable, Logger } from '@nestjs/common';
import { DocumentService, OciService } from '~/document/services';
import { CreateJuniorRequestDto } from '~/junior/dtos/request';
import { DeviceService } from '~/user/services';
import { UpdateCustomerRequestDto, UpdateNotificationsSettingsRequestDto } from '../dtos/request';
import { Customer } from '../entities';
import { CustomerRepository } from '../repositories/customer.repository';

@Injectable()
export class CustomerService {
  private readonly logger = new Logger(CustomerService.name);
  constructor(
    private readonly customerRepository: CustomerRepository,
    private readonly ociService: OciService,
    private readonly deviceService: DeviceService,
    private readonly documentService: DocumentService,
  ) {}
  async updateNotificationSettings(userId: string, data: UpdateNotificationsSettingsRequestDto, deviceId: string) {
    this.logger.log(`Updating notification settings for user ${userId}`);
    const customer = await this.findCustomerById(userId);

    const notificationSettings = (await this.customerRepository.updateNotificationSettings(customer, data))
      .notificationSettings;

    if (data.isPushEnabled && deviceId) {
      this.logger.log(`Updating device ${deviceId} with fcmToken`);
      await this.deviceService.updateDevice(deviceId, {
        fcmToken: data.fcmToken,
        userId: userId,
      });
    }
    this.logger.log(`Notification settings updated for user ${userId}`);
    return notificationSettings;
  }

  async updateCustomer(userId: string, data: UpdateCustomerRequestDto): Promise<Customer> {
    this.logger.log(`Updating customer ${userId}`);

    await this.validateProfilePictureForCustomer(userId, data.profilePictureId);
    await this.customerRepository.updateCustomer(userId, data);
    this.logger.log(`Customer ${userId} updated successfully`);
    return this.findCustomerById(userId);
  }

  createJuniorCustomer(guardianId: string, juniorId: string, body: CreateJuniorRequestDto) {
    this.logger.log(`Creating customer for user ${juniorId}`);
    return this.customerRepository.createJuniorCustomer(guardianId, juniorId, body);
  }

  createGuardianCustomer(userId: string) {
    this.logger.log(`Creating guardian customer for user ${userId}`);
    return this.customerRepository.createGuardianCustomer(userId);
  }

  async findCustomerById(id: string) {
    this.logger.log(`Finding customer ${id}`);
    const customer = await this.customerRepository.findOne({ id });

    if (!customer) {
      this.logger.error(`Customer ${id} not found`);
      throw new BadRequestException('CUSTOMER.NOT_FOUND');
    }

    if (customer.profilePicture) {
      this.logger.log(`Generating pre-signed url for profile picture of customer ${id}`);
      customer.profilePicture.url = await this.ociService.generatePreSignedUrl(customer.profilePicture);
    }
    this.logger.log(`Customer ${id} found successfully`);
    return customer;
  }

  private async validateProfilePictureForCustomer(userId: string, profilePictureId?: string) {
    if (!profilePictureId) return;

    this.logger.log(`Validating profile picture ${profilePictureId}`);

    const profilePicture = await this.documentService.findDocumentById(profilePictureId);

    if (!profilePicture) {
      this.logger.error(`Profile picture ${profilePictureId} not found`);
      throw new BadRequestException('DOCUMENT.NOT_FOUND');
    }

    if (profilePicture.createdById && profilePicture.createdById !== userId) {
    }
  }
}