add_solution

src/controllers/expenses.controller.js

@@ -0,0 +1,112 @@
+const expensesService = require('./../services/expenses.service.js');
+const userService = require('./../services/users.service.js');
+
+const STATUS_CODES = {
+  OK: 200,
+  CREATED: 201,
+  NO_CONTENT: 204,
+  BAD_REQUEST: 400,
+  NOT_FOUND: 404,
+};
+
+const get = async (req, res) => {
+  const { userId, categories, from, to } = req.query;
+
+  res.statusCode = STATUS_CODES.OK;
+  res.send(await expensesService.getAll(userId, categories, from, to));
+};
+
+const getOne = async (req, res) => {
+  const { id } = req.params;
+
+  if (!id) {
+    res.sendStatus(STATUS_CODES.BAD_REQUEST);
+
+    return;
+  }
+
+  const expenses = await expensesService.getById(id);
+
+  if (!expenses) {
+    res.sendStatus(STATUS_CODES.NOT_FOUND);
+
+    return;
+  }
+
+  res.statusCode = STATUS_CODES.OK;
+  res.send(expenses);
+};
+
+const post = async (req, res) => {
+  const { userId, spentAt, title, amount, category, note } = req.body;
+
+  if (!(userId && spentAt && title && amount)) {
+    res.sendStatus(STATUS_CODES.BAD_REQUEST);
+
+    return;
+  }
+
+  const user = await userService.getById(userId);
+
+  if (!user) {
+    res.sendStatus(STATUS_CODES.BAD_REQUEST);
+
+    return;
+  }
+
+  const item = await expensesService.create(
+    userId,
+    spentAt,
+    title,
+    amount,
+    category,
+    note,
+  );
+
+  res.statusCode = STATUS_CODES.CREATED;
+  res.send(item);
+};
+
+const remove = async (req, res) => {
+  const { id } = req.params;
+
+  if (!(await expensesService.getById(id))) {
+    res.sendStatus(STATUS_CODES.NOT_FOUND);
+
+    return;
+  }
+
+  await expensesService.remove(id);
+
+  res.sendStatus(STATUS_CODES.NO_CONTENT);
+};
+
+const patch = async (req, res) => {
+  const { id } = req.params;
+  const { title } = req.body;
+
+  if (!(await expensesService.getById(id))) {
+    res.sendStatus(STATUS_CODES.NOT_FOUND);
+
+    return;
+  }
+
+  if (typeof title !== 'string') {
+    res.sendStatus(STATUS_CODES.BAD_REQUEST);
+
+    return;
+  }
+
+  const user = await expensesService.change(id, title);
+
+  res.statusCode = STATUS_CODES.OK;
+  res.send(user);
+};
+
+module.exports = {
+  get,
+  getOne,
+  post,
+  remove,
+  patch,
+};

src/controllers/users.controller.js

@@ -0,0 +1,86 @@
+const userService = require('./../services/users.service.js');
+
+const STATUS_CODES = {
+  OK: 200,
+  CREATED: 201,
+  NO_CONTENT: 204,
+  BAD_REQUEST: 400,
+  NOT_FOUND: 404,
+};
+
+const get = async (req, res) => {
+  res.statusCode = STATUS_CODES.OK;
+
+  res.send(await userService.getAll());
+};
+
+const getOne = async (req, res) => {
+  const { id } = req.params;
+  const user = await userService.getById(id);
+
+  if (!user) {
+    res.sendStatus(STATUS_CODES.NOT_FOUND);
+
+    return;
+  }
+
+  res.statusCode = STATUS_CODES.OK;
+  res.send(user);
+};
+const post = async (req, res) => {
+  const { name } = req.body;
+
+  if (!name) {
+    res.sendStatus(STATUS_CODES.BAD_REQUEST);
+
+    return;
+  }
+
+  const item = await userService.create(name);
+
+  if (!item) {
+    res.sendStatus(STATUS_CODES.BAD_REQUEST);
+
+    return;
+  }
+
+  res.statusCode = STATUS_CODES.CREATED;
+  res.send(item);
+};
+const remove = async (req, res) => {
+  const { id } = req.params;
+
+  if (!(await userService.getById(id))) {
+    res.sendStatus(STATUS_CODES.NOT_FOUND);
+
+    return;
+  }
+
+  await userService.remove(id);
+
+  res.sendStatus(STATUS_CODES.NO_CONTENT);
+};
+
+const patch = async (req, res) => {
+  const { id } = req.params;
+  const { name } = req.body;
+
+  if (!(await userService.getById(id))) {
+    res.sendStatus(STATUS_CODES.NOT_FOUND);
+
+    return;
+  }
+
+  const user = await userService.change(id, name);
+
+  res.statusCode = STATUS_CODES.OK;
+  res.send(user);
+};
+
+module.exports = {
+  get,
+  getOne,
+  post,
+  remove,
+  patch,
+};

src/createServer.js

@@ -1,7 +1,20 @@
 'use strict';
 
+const cors = require('cors');
+const express = require('express');
+const usersRouter = require('./routes/users.route');
+const expensesRouter = require('./routes/expenses.route');
+
 const createServer = () => {
-  // your code goes here
+  const app = express();
+
+  app.use(cors());
+
+  app.use('/users', express.json(), usersRouter);
+
+  app.use('/expenses', express.json(), expensesRouter);
+
+  return app;
 };
 
 module.exports = {

src/db.js

@@ -26,7 +26,7 @@ const sequelize = new Sequelize({
   host: POSTGRES_HOST || 'localhost',
   dialect: 'postgres',
   port: POSTGRES_PORT || 5432,
-  password: POSTGRES_PASSWORD || '123',
+  password: POSTGRES_PASSWORD || '1234',
 });
 
 module.exports = {

src/helper/generateId.js

@@ -0,0 +1,9 @@
+'use strict';
+
+const generateId = (arr) => {
+  const newId = Math.max(0, ...arr.map((item) => item.id)) + 1;
+
+  return newId;
+};
+
+module.exports = { generateId };

src/main.js

@@ -0,0 +1,8 @@
+'use strict';
+
+const { createServer } = require('./createServer');
+
+createServer().listen(3000, () => {
+  // eslint-disable-next-line no-console
+  console.log('Server is running on localhost:3000');
+});

src/models/Expense.model.js

@@ -1,9 +1,38 @@
 'use strict';
 
+const { DataTypes } = require('sequelize');
 const { sequelize } = require('../db.js');
 
 const Expense = sequelize.define(
-  // your code goes here
+  'Expense',
+  {
+    userId: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+    spentAt: {
+      type: DataTypes.DATE,
+      allowNull: false,
+    },
+    title: {
+      type: DataTypes.STRING,
+      allowNull: false,
+    },
+    amount: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+    category: {
+      type: DataTypes.STRING,
+    },
+    note: {
+      type: DataTypes.STRING,
+    },
+  },
+  {
+    updatedAt: false,
+    createdAt: false,
+  },
 );
 
 module.exports = {

src/models/User.model.js

@@ -1,9 +1,16 @@
-'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,
+    },
+  },
+  {
+    updatedAt: false,
+  },
 );
 
 module.exports = {

src/routes/expenses.route.js

@@ -0,0 +1,19 @@
+'use strict';
+
+const EXPENSES_ROUTES = {
+  BASE: '/',
+  ID: '/:id',
+};
+
+const expensesController = require('./../controllers/expenses.controller.js');
+
+const express = require('express');
+const expensesRouter = express.Router();
+
+expensesRouter.get(EXPENSES_ROUTES.BASE, expensesController.get);
+expensesRouter.get(EXPENSES_ROUTES.ID, expensesController.getOne);
+expensesRouter.post(EXPENSES_ROUTES.BASE, expensesController.post);
+expensesRouter.delete(EXPENSES_ROUTES.ID, expensesController.remove);
+expensesRouter.patch(EXPENSES_ROUTES.ID, expensesController.patch);
+
+module.exports = expensesRouter;

src/routes/users.route.js

@@ -0,0 +1,18 @@
+'use strict';
+
+const userController = require('./../controllers/users.controller.js');
+const express = require('express');
+const userRouter = express.Router();
+
+const ROUTES = {
+  BASE: '/',
+  ID: '/:id',
+};
+
+userRouter.get(ROUTES.BASE, userController.get);
+userRouter.get(ROUTES.ID, userController.getOne);
+userRouter.post(ROUTES.BASE, userController.post);
+userRouter.delete(ROUTES.ID, userController.remove);
+userRouter.patch(ROUTES.ID, userController.patch);
+
+module.exports = userRouter;