import { Injectable, NotFoundException } from '@nestjs/common';
import { CheckListItemRepository } from '../repositories/check-list-item.repository';
import { TMCheckListItem } from '../entities/check-list-item.entity';
import { CreateCheckListItemDto } from '../dto/check-list-item/create-check-list-item.dto';
import { UpdateCheckListItemDto } from '../dto/check-list-item/update-check-list-item.dto';
import { checkListItemMessage } from '../../../common/enums/message.enum';
import { TaskService } from './task.service';

@Injectable()
export class CheckListItemService {
  constructor(
    private readonly checkListItemRepository: CheckListItemRepository,
    private readonly taskService: TaskService,
  ) {}

  async findOneOrFail(id: string): Promise<TMCheckListItem> {
    const checkListItem = await this.checkListItemRepository.findOneById(id);
    if (!checkListItem) throw new NotFoundException(checkListItemMessage.CHECKLISTITEM_NOT_FOUND);
    return checkListItem;
  }

  async create(dto: CreateCheckListItemDto): Promise<TMCheckListItem> {
    await this.taskService.findOneOrFail(dto.taskId);

    const checkListItem = this.checkListItemRepository.create(dto);
    return this.checkListItemRepository.save(checkListItem);
  }

  async update(id: string, dto: UpdateCheckListItemDto): Promise<TMCheckListItem> {
    const checkListItem = await this.findOneOrFail(id);

    if (dto.taskId) {
      await this.taskService.findOneOrFail(dto.taskId);
    }

    Object.assign(checkListItem, dto);
    return this.checkListItemRepository.save(checkListItem);
  }

  async remove(id: string): Promise<TMCheckListItem> {
    const checkListItem = await this.findOneOrFail(id);
    await this.checkListItemRepository.delete(id);
    return checkListItem;
  }

  async toggleStatus(id: string) : Promise<TMCheckListItem> {
    const checkListItem = await this.findOneOrFail(id);
    const isDone = checkListItem.isDone;
    checkListItem.isDone = !isDone;
    await this.checkListItemRepository.save(checkListItem);
    
    return checkListItem;
  }
}