Adding table promotion (consult not working yet)

routes/(apps)/mobility/(_islands)/ConsultStudents.tsx

@@ -1,64 +1,95 @@
 import { useEffect, useState } from "preact/hooks";
 
+interface Promotion {
+  id: number;
+  name: string;
+}
+
 interface Student {
   id: number;
   firstName: string;
   lastName: string;
   email: string;
-  promotion: string;
+  promotionId: number;
 }
 
 export default function ConsultStudents() {
-  const [students, setStudents] = useState<Student[]>([]);
+  const [promotions, setPromotions] = useState<Promotion[]>([]);
+  const [studentsByPromotion, setStudentsByPromotion] = useState<Record<number, Student[]>>({});
   const [error, setError] = useState<string | null>(null);
 
   useEffect(() => {
-    const fetchStudents = async () => {
+    const fetchPromotionsAndStudents = async () => {
       try {
-        const response = await fetch("/mobility/api/insert_students");
-
-        if (!response.ok) {
-          throw new Error(`Error fetching students: ${response.statusText}`);
+        // Récupérer toutes les promotions
+        const promoResponse = await fetch("/mobility/api/promotions");
+        if (!promoResponse.ok) {
+          throw new Error(`Error fetching promotions: ${promoResponse.statusText}`);
         }
+        const promos: Promotion[] = await promoResponse.json();
+        setPromotions(promos);
 
-        const data: Student[] = await response.json();
-        setStudents(data);
+        // Récupérer les étudiants
+        const studentsResponse = await fetch("/mobility/api/insert_students");
+        if (!studentsResponse.ok) {
+          throw new Error(`Error fetching students: ${studentsResponse.statusText}`);
+        }
+        const students: Student[] = await studentsResponse.json();
+
+        // Grouper les étudiants par promotionId
+        const grouped: Record<number, Student[]> = {};
+        for (const student of students) {
+          if (!grouped[student.promotionId]) {
+            grouped[student.promotionId] = [];
+          }
+          grouped[student.promotionId].push(student);
+        }
+        setStudentsByPromotion(grouped);
       } catch (err) {
-        console.error("Error fetching students:", err);
-        setError("Failed to load students. Please try again later.");
+        console.error("Error fetching promotions or students:", err);
+        setError("Failed to load data. Please try again later.");
       }
     };
 
-    fetchStudents();
+    fetchPromotionsAndStudents();
   }, []);
 
   return (
     <section>
       <h2>Consult Students</h2>
       {error && <p className="error">{error}</p>}
-      {students.length === 0 ? <p>No students found.</p> : (
-        <table>
-          <thead>
-            <tr>
-              <th>ID</th>
-              <th>First Name</th>
-              <th>Last Name</th>
-              <th>Email</th>
-              <th>Promotion</th>
-            </tr>
-          </thead>
-          <tbody>
-            {students.map((student) => (
-              <tr key={student.id}>
-                <td>{student.id}</td>
-                <td>{student.firstName}</td>
-                <td>{student.lastName}</td>
-                <td>{student.email}</td>
-                <td>{student.promotion}</td>
-              </tr>
-            ))}
-          </tbody>
-        </table>
+      {promotions.length === 0 ? (
+        <p>No promotions found.</p>
+      ) : (
+        promotions.map((promo) => (
+          <div key={promo.id}>
+            <h3>Promotion: {promo.name}</h3>
+            {studentsByPromotion[promo.id]?.length ? (
+              <table>
+                <thead>
+                  <tr>
+                    <th>ID</th>
+                    <th>First Name</th>
+                    <th>Last Name</th>
+                    <th>Email</th>
+                  </tr>
+                </thead>
+                <tbody>
+                  {studentsByPromotion[promo.id].map((student) => (
+                    <tr key={student.id}>
+                      <td>{student.id}</td>
+                      <td>{student.firstName}</td>
+                      <td>{student.lastName}</td>
+                      <td>{student.email}</td>
+                    </tr>
+                  ))}
+                </tbody>
+              </table>
+            ) : (
+              <p>No students in this promotion.</p>
+            )}
+          </div>
+        ))
       )}
     </section>
   );