Reto 2 completo

Author: Cristina Taboada

Diff for: RetosTema4/src/controller/notas.controller.js

@@ -1,15 +1,68 @@
 const {pool} = require("../database");
 
-const getMedia = (req,res)=>{
-    console.log('Obtenemos la nota media de un alumno');
+async function getMedia(req,res){
+    const params = [req.query.id];
+    let sql;
+    //-- comprobar si existe una id de alumno. Si existe se pide ese alumno
+    //-- sino se piden todos.
+    if (req.query.id != undefined) {
+        sql = `SELECT AVG(mark) AS nota_media_del_Alumno FROM marks WHERE student_id=?`;
+    }
+
+    //-- Envío de los datos optenidos por la petición.
+    try {
+        const [result] = await pool.query(sql,params);
+        res.send(result);
+    } catch (error) {
+        res.send(error)
+    }
 }
 
-const getAsignaturasAlumnos = (req,res)=>{
-    console.log('Obtenemos los alumnos y las asignaturas a las que estan apuntados');
+async function getAsignaturasAlumnos(req,res){
+    const params = [req.query.id];
+    let sql;
+    //-- comprobar si existe una id de alumno. Si existe se pide ese alumno
+    //-- sino se piden todos.
+    if (req.query.id != undefined) {
+        sql = `SELECT first_name, last_name, title FROM students AS s INNER JOIN subjects AS sub ON (s.group_id=sub.subject_id) WHERE student_id=?`;
+    }else{
+        sql = `SELECT first_name, last_name, title FROM students AS s INNER JOIN subjects AS sub ON (s.group_id=sub.subject_id);`;
+    }
+
+    //-- Envío de los datos optenidos por la petición.
+    try {
+        const [result] = await pool.query(sql,params);
+        res.send(result);
+    } catch (error) {
+        res.send(error)
+    }
 }
 
-const getAsignaturasProfesores = (req,res)=>{
-    console.log('Obtenemos los profesores y las asignaturas que imparten');
+async function getAsignaturasProfesores(req,res){
+    const params = [req.query.id];
+    let sql;
+    //-- comprobar si existe una id de alumno. Si existe se pide ese alumno
+    //-- sino se piden todos.
+    if (req.query.id != undefined) {
+        sql = `SELECT first_name AS teacher_name, last_name AS teacher_lastname, sub.title AS subjects FROM teachers AS t
+                JOIN subject_teacher AS st ON t.teacher_id=st.teacher_id
+                JOIN subjects AS sub ON st.subject_id=sub.subject_id
+                WHERE t.teacher_id = ?
+                GROUP BY first_name, last_name, sub.title;`;
+    }else{
+        sql = `SELECT first_name AS teacher_name, last_name AS teacher_lastname, sub.title AS subjects FROM teachers AS t
+                JOIN subject_teacher AS st ON t.teacher_id=st.teacher_id
+                JOIN subjects AS sub ON st.subject_id=sub.subject_id
+                GROUP BY first_name, last_name, sub.title;`;
+    }
+
+    //-- Envío de los datos optenidos por la petición.
+    try {
+        const [result] = await pool.query(sql,params);
+        res.send(result);
+    } catch (error) {
+        res.send(error)
+    }
 }
 
 module.exports = { getMedia, getAsignaturasAlumnos, getAsignaturasProfesores };