bank-app/back/libs/mysql.js

const mysql = require("mysql");

function getConnection() {
	return mysql.createConnection({
		host: process.env.MYSQL_HOST,
		user: process.env.MYSQL_USER,
		password: process.env.MYSQL_PASSWORD,
		database: process.env.MYSQL_DATABASE,
	});
}

// +-------------------------------+
// |            Users              |
// +-------------------------------+

function addUser(connection, name, lastname, email, numero, password) {
	return new Promise((resolve, reject) => {
		connection.query(
			`INSERT INTO users (name, lastname, email, numero, password) VALUES (?, ?, ?, ?, ?)`,
			[name, lastname, email, numero, password],
			(error, result) => {
				if (error) {
					reject(new Error(error));
				}
				resolve(result);
			}
		);
	});
}

function getUsers(connection) {
	return new Promise((resolve, reject) => {
		connection.query(
			`SELECT * FROM users`,
			(error, result) => {
				if (error) {
					reject(new Error(error));
				}
				resolve(result);
			}
		);
	});
}

function getUser(connection, id) {
	return new Promise((resolve, reject) => {
		connection.query(
			`SELECT * FROM users WHERE id = ?`,
			[id],
			(error, result) => {
				if (error) {
					reject(new Error(error));
				}
				resolve(result);
			}
		);
	});
}

function getUserByEmail(connection, email) {
	return new Promise((resolve, reject) => {
		connection.query(
			`SELECT * FROM users WHERE email = ?`,
			[email],
			(error, result) => {
				if (error) {
					reject(new Error(error));
				}
				resolve(result);
			}
		);
	});
}

// +-------------------------------+
// |           Accounts            |
// +-------------------------------+

function getUserAccounts(connection, id) {
	return new Promise((resolve, reject) => {
		connection.query(
			`SELECT * FROM accounts WHERE client_id = ?`,
			[id],
			(error, result) => {
				if (error) {
					reject(new Error(error));
				}
				resolve(result);
			}
		);
	});
}

// +-------------------------------+
// |             Cards             |
// +-------------------------------+

function getUserCards(connection, id) {
	return new Promise((resolve, reject) => {
		connection.query(
			`SELECT cards.* 
			 FROM cards 
			 JOIN accounts ON cards.account_id = accounts.id
			 WHERE client_id = ?`,
			[id],
			(error, result) => {
				if (error) {
					reject(new Error(error));
				}
				resolve(result);
			}
		);
	});
}

module.exports = {
	getConnection,

	addUser,
	getUsers,
	getUser,
	getUserByEmail,

	getUserAccounts,

	getUserCards,
};