Add TypeORM DB and Resources (#2)

Co-authored-by: Joe Arndt <jmarndt@users.noreply.github.com>
Reviewed-on: #2

src/categories/categories.controller.ts

@@ -0,0 +1,75 @@
+import {
+  Controller,
+  Get,
+  Post,
+  Put,
+  Delete,
+  Body,
+  Param,
+  HttpCode,
+  HttpStatus,
+  BadRequestException,
+  NotFoundException,
+  InternalServerErrorException
+} from '@nestjs/common';
+import { CategoriesService } from './categories.service';
+import { CreateCategoryDto } from './dto/create-category.dto';
+import { UpdateCategoryDto } from './dto/update-category.dto';
+import { Category } from './entities/category.entity';
+
+@Controller('categories')
+export class CategoriesController {
+  constructor(private readonly categoriesService: CategoriesService) { }
+
+  @Get()
+  @HttpCode(HttpStatus.OK)
+  public async findAll(): Promise<Category[]> {
+    return await this.categoriesService.findAll();
+  }
+
+  @Get(':id')
+  @HttpCode(HttpStatus.OK)
+  public async findOne(@Param('id') id: string): Promise<Category> {
+    if (!id) {
+      throw new BadRequestException('No ID provided.');
+    }
+
+    try {
+      return await this.categoriesService.findById(id);
+    }
+    catch (error) {
+      throw new NotFoundException(error);
+    }
+  }
+
+  @Post()
+  @HttpCode(HttpStatus.CREATED)
+  public async create(@Body() category: CreateCategoryDto): Promise<Category> {
+    if (!category.name) {
+      throw new BadRequestException('Category name cannot be empty.');
+    }
+
+    try {
+      return await this.categoriesService.create(category);
+    }
+    catch (error) {
+      throw new InternalServerErrorException(error);
+    }
+  }
+
+  @Put()
+  @HttpCode(HttpStatus.OK)
+  public async update(@Body() category: UpdateCategoryDto): Promise<Category> {
+    if (!category.id) {
+      throw new BadRequestException('Category ID cannot be empty.');
+    }
+
+    return await this.categoriesService.update(category);
+  }
+
+  @Delete(':id')
+  @HttpCode(HttpStatus.NO_CONTENT)
+  public async remove(@Param('id') id: string): Promise<void> {
+    return await this.categoriesService.remove(id);
+  }
+}