Rework Expenses resource (#3)

Co-authored-by: Joe Arndt <jmarndt@users.noreply.github.com>
Reviewed-on: #3

src/expenses/expenses.controller.ts

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