Conexão com banco e início de repository

backend/.env-example

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+PORT=5000
+
+DB_HOST=
+DB_PORT=
+DB_USER=
+DB_PASSWORD=
+DB_NAME=

backend/config/database.js

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+import mysql from "mysql2/promise";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+export const pool = mysql.createPool({
+    host : process.env.DB_HOST,
+    port : process.env.DB_PORT,
+    user: process.env.DB_USER,
+    database: process.env.DB_NAME,
+    password: process.env.DB_PASSWORD,
+    waitForConnections: true,
+    connectionLimit: 10
+});
+
+export async function query(sql, params = []){
+    const [rows] = await pool.execute(sql, params);
+    return rows;
+}

backend/repositories/usuarioRepository.js

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+import {query} from "../config/database.js";
+
+export async function findAll() {
+    return query(`select usuario.id, usuario.nome, usuario.email, perfil.nome 
+                from usuario inner join perfil on 
+                usuario.perfil_id = perfil.id 
+                where usuario.ativo = true`)
+}
+
+export async function findById(id) {
+    return query(`select usuario.id, usuario.nome, usuario.email, perfil.nome 
+                from usuario inner join perfil on 
+                usuario.perfil_id = perfil.id 
+                where usuario.ativo = true and usuario.id = ?`,
+            [id])
+}
+
+