import { Injectable, NotFoundException } from '@nestjs/common';
import { CreateFeedDto } from './dto/create-feed.dto.js';
import { UpdateFeedDto } from './dto/update-feed.dto.js';
import { FeedEntity } from '../../entities/feed.entity.js';
import { plainToClass } from 'class-transformer';
import {
  FilterOperator,
  paginate,
  PaginateConfig,
  PaginateQuery,
} from 'nestjs-paginate';

@Injectable()
export class FeedsService {
  async create(createFeedDto: CreateFeedDto) {
    return await FeedEntity.create({ ...createFeedDto }).save();
  }

  async findAll(paginateQuery: PaginateQuery) {
    const paginateConfig: PaginateConfig<FeedEntity> = {
      sortableColumns: ['id', 'create_at', 'author_id'],
      filterableColumns: {
        author_id: [FilterOperator.EQ],
      },
      defaultSortBy: [['id', 'DESC']],
    };
    return paginate(
      paginateQuery,
      FeedEntity.createQueryBuilder(),
      paginateConfig,
    );
  }

  async findOne(id: number) {
    return await FeedEntity.findOneBy({ id: id });
  }

  async getFeedOrError(id: number) {
    let feed = await FeedEntity.findOneBy({ id });
    if (!feed) {
      throw new NotFoundException('Menu item not found');
    }
    return feed;
  }

  async update(id: number, updateFeedDto: UpdateFeedDto) {
    let feed = await this.getFeedOrError(id);
    feed = plainToClass(FeedEntity, {
      ...feed,
      ...updateFeedDto,
    });
    return await feed.save();
  }

  async remove(id: number) {
    let feed = await this.getFeedOrError(id);
    return await feed.remove();
  }
}