import { Injectable, NotFoundException } from '@nestjs/common';
import { CreateAttachmentDto } from './dto/create-attachment.dto';
import { UpdateAttachmentDto } from './dto/update-attachment.dto';
import { Attachment } from './entities/attachment.entity';
import { AttachmentRepository } from './repositories/attachment.repository';
import { AttachmentMessages } from 'src/common/enums/messages.enum';

@Injectable()
export class AttachmentService {
  constructor(private readonly attachmentRepository: AttachmentRepository) {}

  async create(createAttachmentDto: CreateAttachmentDto): Promise<Attachment> {
    const attachment = this.attachmentRepository.create(createAttachmentDto);
    await this.attachmentRepository.save(attachment);
    return attachment;
  }

  async findAll(): Promise<Attachment[]> {
    return await this.attachmentRepository.find();
  }

  async findOneOrFail(id: string): Promise<Attachment> {
    const attachment = await this.attachmentRepository.findOne({where: {id}});
    if(!attachment) throw new NotFoundException(AttachmentMessages.ATTACHMENT_NOT_FOUND);
    return attachment;
  }

  async update(id: string, updateAttachmentDto: UpdateAttachmentDto): Promise<Attachment> {
    const attachment = await this.findOneOrFail(id);
    Object.assign(attachment, updateAttachmentDto);
    return await this.attachmentRepository.save(attachment);
  }

  async remove(id: string): Promise<Attachment> {
    const attachment = await this.findOneOrFail(id);
    await this.attachmentRepository.remove(attachment);
    return attachment;
  }
}