Solution

src/controllers/expense.controller.js

@@ -0,0 +1,113 @@
+const expenseService = require('./../services/expense.service');
+const userService = require('./../services/user.service');
+
+const get = async (req, res) => {
+  if (Object.keys(req.query).length === 0) {
+    res.send(await expenseService.getAll());
+
+    return;
+  }
+
+  const { userId, categories, from, to } = req.query;
+
+  const expenses = await expenseService.getFiltered({
+    userId,
+    categories: categories ? categories.split(',') : [],
+    from,
+    to,
+  });
+
+  res.send(expenses);
+};
+
+const create = async (req, res) => {
+  const { userId, spentAt, title, amount, category, note } = req.body;
+
+  if (
+    !userId ||
+    !spentAt ||
+    !title ||
+    !amount ||
+    !userService.getById(userId)
+  ) {
+    res.sendStatus(400);
+
+    return;
+  }
+
+  const expense = await expenseService.create({
+    userId,
+    spentAt,
+    title,
+    amount,
+    category,
+    note,
+  });
+
+  res.status(201).send(expense);
+};
+
+const getOne = async (req, res) => {
+  const id = +req.params.id;
+
+  if (!id) {
+    res.sendStatus(400);
+
+    return;
+  }
+
+  const expense = await expenseService.getById(id);
+
+  if (!expense) {
+    res.sendStatus(404);
+
+    return;
+  }
+
+  res.send(expense);
+};
+
+const remove = async (req, res) => {
+  const id = +req.params.id;
+
+  if (!(await expenseService.getById(id))) {
+    res.sendStatus(404);
+
+    return;
+  }
+
+  await expenseService.remove(id);
+  res.sendStatus(204);
+};
+
+const update = async (req, res) => {
+  const id = +req.params.id;
+  const { spentAt, title, amount, category, note } = req.body;
+
+  if (!(await expenseService.getById(id))) {
+    res.sendStatus(404);
+
+    return;
+  }
+
+  await expenseService.update({
+    id,
+    spentAt,
+    title,
+    amount,
+    category,
+    note,
+  });
+
+  const updatedExpense = await expenseService.getById(id);
+
+  res.send(updatedExpense);
+};
+
+module.exports = {
+  get,
+  create,
+  getOne,
+  remove,
+  update,
+};

src/controllers/user.controller.js

@@ -0,0 +1,83 @@
+const userService = require('./../services/user.service');
+
+const get = async (req, res) => {
+  res.send(await userService.getAll());
+};
+
+const create = async (req, res) => {
+  const { name } = req.body;
+
+  if (!name || typeof name !== 'string') {
+    res.sendStatus(400);
+
+    return;
+  }
+
+  const user = await userService.create(name);
+
+  res.status(201).send(user);
+};
+
+const getOne = async (req, res) => {
+  const id = +req.params.id;
+
+  if (!id) {
+    res.sendStatus(400);
+
+    return;
+  }
+
+  const user = await userService.getById(id);
+
+  if (!user) {
+    res.sendStatus(404);
+
+    return;
+  }
+
+  res.send(user);
+};
+
+const remove = async (req, res) => {
+  const id = +req.params.id;
+
+  if (!(await userService.getById(id))) {
+    res.sendStatus(404);
+
+    return;
+  }
+
+  await userService.remove(id);
+  res.sendStatus(204);
+};
+
+const update = async (req, res) => {
+  const id = +req.params.id;
+  const { name } = req.body;
+
+  if (!(await userService.getById(id))) {
+    res.sendStatus(404);
+
+    return;
+  }
+
+  if (typeof name !== 'string' || !name) {
+    res.sendStatus(400);
+
+    return;
+  }
+
+  await userService.update({ id, name });
+
+  const updatedUser = await userService.getById(id);
+
+  res.send(updatedUser);
+};
+
+module.exports = {
+  get,
+  create,
+  getOne,
+  remove,
+  update,
+};

src/createServer.js

@@ -1,8 +1,19 @@
 'use strict';
 
-const createServer = () => {
-  // your code goes here
-};
+const express = require('express');
+const { userRouter } = require('./routes/user.router');
+const { expenseRouter } = require('./routes/expense.router');
+
+function createServer() {
+  const app = express();
+
+  app.use(express.json());
+
+  app.use('/users', userRouter);
+  app.use('/expenses', expenseRouter);
+
+  return app;
+}
 
 module.exports = {
   createServer,

src/db.js

@@ -3,7 +3,6 @@
 const { Sequelize } = require('sequelize');
 const utils = require('util');
 
-// Needed for testing purposes, do not remove
 require('dotenv').config();
 global.TextEncoder = utils.TextEncoder;
 
@@ -15,18 +14,13 @@ const {
   POSTGRES_DB,
 } = process.env;
 
-/*
-  All credentials setted to default values (exsept password - it is exapmle)
-  replace if needed with your own
-*/
-
 const sequelize = new Sequelize({
   database: POSTGRES_DB || 'postgres',
   username: POSTGRES_USER || 'postgres',
   host: POSTGRES_HOST || 'localhost',
   dialect: 'postgres',
   port: POSTGRES_PORT || 5432,
-  password: POSTGRES_PASSWORD || '123',
+  password: POSTGRES_PASSWORD || '2223',
 });
 
 module.exports = {

src/models/Expense.model.js

@@ -1,9 +1,43 @@
 'use strict';
 
+const { DataTypes } = require('sequelize');
 const { sequelize } = require('../db.js');
 
 const Expense = sequelize.define(
-  // your code goes here
+  'Expense',
+  {
+    title: {
+      type: DataTypes.STRING,
+      allowNull: false,
+    },
+    userId: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+      field: 'user_id',
+    },
+    spentAt: {
+      type: DataTypes.DATE,
+      allowNull: false,
+      field: 'spent_at',
+    },
+    amount: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+    category: {
+      type: DataTypes.STRING,
+      allowNull: true,
+    },
+    note: {
+      type: DataTypes.STRING,
+      allowNull: true,
+    },
+  },
+  {
+    tableName: 'expenses',
+    updatedAt: false,
+    createdAt: false,
+  },
 );
 
 module.exports = {

src/models/User.model.js

@@ -1,9 +1,21 @@
 'use strict';
 
+const { DataTypes } = require('sequelize');
 const { sequelize } = require('../db.js');
 
 const User = sequelize.define(
-  // your code goes here
+  'User',
+  {
+    name: {
+      type: DataTypes.STRING,
+      allowNull: false,
+    },
+  },
+  {
+    tableName: 'users',
+    updatedAt: false,
+    createdAt: false,
+  },
 );
 
 module.exports = {

src/routes/expense.router.js

@@ -0,0 +1,18 @@
+const express = require('express');
+const expenseController = require('./../controllers/expense.controller');
+
+const router = express.Router();
+
+router.get('/', expenseController.get);
+
+router.get('/:id', expenseController.getOne);
+
+router.post('/', expenseController.create);
+
+router.delete('/:id', expenseController.remove);
+
+router.patch('/:id', expenseController.update);
+
+module.exports = {
+  expenseRouter: router,
+};

src/routes/user.router.js

@@ -0,0 +1,18 @@
+const express = require('express');
+const userController = require('./../controllers/user.controller');
+
+const router = express.Router();
+
+router.get('/', userController.get);
+
+router.get('/:id', userController.getOne);
+
+router.post('/', userController.create);
+
+router.delete('/:id', userController.remove);
+
+router.patch('/:id', userController.update);
+
+module.exports = {
+  userRouter: router,
+};