feat: integrate authentication and password management features, including bcrypt for hashing and NextAuth for session handling

app/api/auth/[...nextauth]/route.ts

@@ -0,0 +1,7 @@
+import NextAuth from "next-auth";
+import { authOptions } from "@/lib/auth";
+
+const handler = NextAuth(authOptions);
+
+export { handler as GET, handler as POST };
+

app/api/auth/change-password/route.ts

@@ -0,0 +1,52 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getServerSession } from "next-auth";
+import { authOptions } from "@/lib/auth";
+import { authService } from "@/services/auth.service";
+
+export async function POST(request: NextRequest) {
+  try {
+    // Verify user is authenticated
+    const session = await getServerSession(authOptions);
+    if (!session) {
+      return NextResponse.json(
+        { success: false, error: "Non authentifié" },
+        { status: 401 }
+      );
+    }
+
+    const body = await request.json();
+    const { oldPassword, newPassword } = body;
+
+    if (!oldPassword || !newPassword) {
+      return NextResponse.json(
+        { success: false, error: "Mot de passe requis" },
+        { status: 400 }
+      );
+    }
+
+    if (newPassword.length < 4) {
+      return NextResponse.json(
+        { success: false, error: "Le mot de passe doit contenir au moins 4 caractères" },
+        { status: 400 }
+      );
+    }
+
+    const result = await authService.changePassword(oldPassword, newPassword);
+    
+    if (!result.success) {
+      return NextResponse.json(
+        { success: false, error: result.error },
+        { status: 400 }
+      );
+    }
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error("Error changing password:", error);
+    return NextResponse.json(
+      { success: false, error: "Erreur lors du changement de mot de passe" },
+      { status: 500 }
+    );
+  }
+}
+