import { Injectable } from '@nestjs/common';
import { InjectRepository } from '@nestjs/typeorm';
import { Repository } from 'typeorm';
import { Roles } from '~/auth/enums';
import { IJwtPayload } from '~/auth/interfaces';
import { CreateGiftRequestDto, GiftFiltersRequestDto, GiftReplyRequestDto } from '../dtos/request';
import { Gift, GiftRedemption, GiftReply } from '../entities';
import { GiftStatus } from '../enums';
const ONE = 1;

@Injectable()
export class GiftsRepository {
  constructor(@InjectRepository(Gift) private readonly giftsRepository: Repository<Gift>) {}

  create(guardianId: string, gift: CreateGiftRequestDto): Promise<Gift> {
    return this.giftsRepository.save(
      this.giftsRepository.create({
        name: gift.name,
        description: gift.description,
        amount: gift.amount,
        recipientId: gift.recipientId,
        imageId: gift.imageId,
        color: gift.color,
        giverId: guardianId,
      }),
    );
  }

  findJuniorGiftById(juniorId: string, giftId: string): Promise<Gift | null> {
    return this.giftsRepository.findOne({
      where: { recipientId: juniorId, id: giftId },
      relations: ['recipient', 'recipient.customer', 'image', 'giver', 'giver.customer', 'reply'],
    });
  }

  findGuardianGiftById(guardianId: string, giftId: string): Promise<Gift | null> {
    return this.giftsRepository.findOne({
      where: { giverId: guardianId, id: giftId },
      relations: ['recipient', 'recipient.customer', 'image', 'giver', 'giver.customer', 'reply'],
    });
  }

  findGifts(user: IJwtPayload, filters: GiftFiltersRequestDto) {
    const query = this.giftsRepository.createQueryBuilder('gift');
    if (user.roles.includes(Roles.GUARDIAN)) {
      query.where('gift.giverId = :giverId', { giverId: user.sub });
    } else {
      query.where('gift.recipientId = :recipientId', { recipientId: user.sub });
    }
    query.andWhere('gift.status = :status', { status: filters.status });
    query.skip((filters.page - ONE) * filters.size);
    query.take(filters.size);
    query.orderBy('gift.createdAt', 'DESC');
    return query.getManyAndCount();
  }

  redeemGift(gift: Gift) {
    const redemptions = gift.redemptions || [];
    gift.status = GiftStatus.REDEEMED;
    gift.redeemedAt = new Date();
    gift.redemptions = [...redemptions, new GiftRedemption()];
    return this.giftsRepository.save(gift);
  }

  UndoGiftRedemption(gift: Gift) {
    gift.status = GiftStatus.AVAILABLE;
    gift.redeemedAt = null;
    return this.giftsRepository.save(gift);
  }

  replyToGift(gift: Gift, reply: GiftReplyRequestDto) {
    gift.reply = GiftReply.create({ ...reply });

    return this.giftsRepository.save(gift);
  }
}