feat: add category

src/app.module.ts

@@ -19,6 +19,7 @@ import 'winston-mongodb';
 import { MongooseModule } from '@nestjs/mongoose';
 import { OrderModule } from './order/order.module';
 import { IngredientUsageModule } from './ingredient-usage/ingredient-usage.module';
+import { CategoryModule } from './category/category.module';
 @Module({
   imports: [
     ConfigModule.forRoot({ isGlobal: true }),
@@ -37,6 +38,7 @@ import { IngredientUsageModule } from './ingredient-usage/ingredient-usage.modul
     ),
     OrderModule,
     IngredientUsageModule,
+    CategoryModule,
   ],
   controllers: [AppController],
   providers: [AppService],

src/category/category.controller.ts

@@ -0,0 +1,45 @@
+import {
+  Controller,
+  Get,
+  Post,
+  Body,
+  Patch,
+  Param,
+  Delete,
+} from '@nestjs/common';
+import { CategoryService } from './category.service';
+import { CreateCategoryDto } from './dto/create-category.dto';
+import { UpdateCategoryDto } from './dto/update-category.dto';
+
+@Controller('category')
+export class CategoryController {
+  constructor(private readonly categoryService: CategoryService) {}
+
+  @Post()
+  create(@Body() createCategoryDto: CreateCategoryDto) {
+    return this.categoryService.create(createCategoryDto);
+  }
+
+  @Get()
+  findAll() {
+    return this.categoryService.findAll();
+  }
+
+  @Get(':id')
+  findOne(@Param('id') id: string) {
+    return this.categoryService.findOne(id);
+  }
+
+  @Patch(':id')
+  update(
+    @Param('id') id: string,
+    @Body() updateCategoryDto: UpdateCategoryDto,
+  ) {
+    return this.categoryService.update(id, updateCategoryDto);
+  }
+
+  @Delete(':id')
+  remove(@Param('id') id: string) {
+    return this.categoryService.remove(id);
+  }
+}

src/category/category.module.ts

@@ -0,0 +1,13 @@
+import { Module } from '@nestjs/common';
+import { CategoryService } from './category.service';
+import { CategoryController } from './category.controller';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { Category } from './entities/category.entity';
+
+@Module({
+  imports: [TypeOrmModule.forFeature([Category])],
+  controllers: [CategoryController],
+  providers: [CategoryService],
+  exports: [CategoryService],
+})
+export class CategoryModule {}

src/category/category.service.ts

@@ -0,0 +1,51 @@
+import { BadRequestException, Injectable } from '@nestjs/common';
+import { CreateCategoryDto } from './dto/create-category.dto';
+import { UpdateCategoryDto } from './dto/update-category.dto';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Category } from './entities/category.entity';
+import { Repository } from 'typeorm';
+
+@Injectable()
+export class CategoryService {
+  constructor(
+    @InjectRepository(Category)
+    private readonly categoryRepository: Repository<Category>,
+  ) {}
+  async create(createCategoryDto: CreateCategoryDto) {
+    return await this.categoryRepository.save(createCategoryDto);
+  }
+
+  async findAll() {
+    return await this.categoryRepository.find({
+      order: {
+        created_at: 'DESC',
+      },
+    });
+  }
+
+  async findOne(id: string) {
+    return await this.categoryRepository.findOne({
+      where: {
+        id,
+      },
+    });
+  }
+
+  async update(id: string, updateCategoryDto: UpdateCategoryDto) {
+    const entity = await this.findOne(id);
+    if (!entity) {
+      throw new BadRequestException('Category not found.');
+    }
+
+    const updated = this.categoryRepository.merge(entity, updateCategoryDto);
+    await this.categoryRepository.save(updated);
+  }
+
+  async remove(id: string) {
+    const entity = await this.findOne(id);
+    if (!entity) {
+      throw new BadRequestException('Category not found.');
+    }
+    await this.categoryRepository.remove(entity);
+  }
+}

src/category/dto/create-category.dto.ts

@@ -0,0 +1,6 @@
+import { IsString } from 'class-validator';
+
+export class CreateCategoryDto {
+  @IsString()
+  name: string;
+}

src/category/dto/update-category.dto.ts

@@ -0,0 +1,4 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreateCategoryDto } from './create-category.dto';
+
+export class UpdateCategoryDto extends PartialType(CreateCategoryDto) {}

src/category/entities/category.entity.ts

@@ -0,0 +1,8 @@
+import { BaseEntity } from 'src/common/base_entity';
+import { Column, Entity } from 'typeorm';
+
+@Entity({ name: 'categories' })
+export class Category extends BaseEntity {
+  @Column({ unique: true })
+  name: string;
+}