import { Injectable } from '@nestjs/common';
import { CreateCategoryDto } from './dto/create-category.dto';
import { UpdateCategoryDto } from './dto/update-category.dto';
import { CategoryDataService } from './category-data.service';
import { Category } from './entities/category.entity';

@Injectable()
export class CategoriesService {
  public constructor(private categoryDataService: CategoryDataService) { }

  public async findAll(): Promise<Category[]> {
    return await this.categoryDataService.getAll();
  }

  public async findById(id: string): Promise<Category> {
    const category = await this.categoryDataService.getById(id);
    if (!category) {
      throw new Error('No category found');
    }

    return category;
  }

  public async create(category: CreateCategoryDto): Promise<Category> {
    return await this.categoryDataService.create(category.name);
  }

  public async update(category: UpdateCategoryDto): Promise<Category> {
    return await this.categoryDataService.update(category);
  }

  public async remove(id: string): Promise<void> {
    await this.categoryDataService.delete(id);
  }
}