diff --git a/src/database.ts b/src/database.ts
index 89249ed..7458420 100644
--- a/src/database.ts
+++ b/src/database.ts
@@ -149,7 +149,7 @@ export async function verifyUser(
   db: sqlite3.Database,
   login: string,
 ): Promise<User | null> {
-  const verifyUserQuery = `SELECT login, password FROM registered_user WHERE login = ?`;
+  const verifyUserQuery = `SELECT id_user, login, password FROM registered_user WHERE login = ?`;
 
   const res = await getDB<User>(db, verifyUserQuery, [login]);
 
@@ -161,6 +161,7 @@ export async function verifyUser(
 }
 
 export type User = {
+  id_user: number;
   login: string;
   password: string;
 };
diff --git a/src/runner.ts b/src/runner.ts
index 1a8567b..163e9d2 100644
--- a/src/runner.ts
+++ b/src/runner.ts
@@ -35,7 +35,7 @@ export function allocateBuffer(
 }
 
 export function getRunner(language: string): (typeof RUNNERS)[number] | null {
-  language = aliases[language] || language;
+  language = aliases[language] || language.toLowerCase();
   if (ALLOWED_LANGUAGES.has(language)) {
     return language as (typeof RUNNERS)[number];
   }
diff --git a/src/server.ts b/src/server.ts
index be97bb0..8a7db81 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -59,7 +59,7 @@ fastify.register(fastifySession, {
 
 declare module "fastify" {
   interface Session {
-    userKey: string | null;
+    userKey: number;
   }
 }
 
@@ -237,20 +237,16 @@ fastify.post(
     if (user === null || !(await bcrypt.compare(password, user.password))) {
       reply.send({ success: false });
     } else {
-      request.session.userKey = generateId();
+      request.session.userKey = user.id_user;
       reply.send({ success: true });
     }
-
-    bcrypt.compare(password, user!.password)
-      .then(res => reply.send({ sucess: res }))
-      .catch(err => reply.send({ sucess: false }));
   },
 );
 
 /* Route pour se déconnecter */
 fastify.get("/users/logout", async (request, reply) => {
   console.log(request.session.userKey);
-  request.session.destroy();
+  await request.session.destroy();
   reply.send({ success: true });
 });
 
@@ -449,8 +445,6 @@ fastify.post(
   {
     schema: {
       body: Type.Object({
-        id_user: Type.Number(),
-        link: Type.String(),
         language: Type.String(),
         title: Type.String(),
         code: Type.String(),
@@ -458,9 +452,11 @@ fastify.post(
     },
   },
   async (request, reply) => {
-    const { id_user, link, language, title, code } = request.body;
-    await db.insertWork(database, link, id_user, language, title, code);
-    reply.send({ success: true });
+    const link = generateId();
+    const user = request.session.userKey;
+    const { language, title, code } = request.body;
+    await db.insertWork(database, link, user, language, title, code);
+    reply.send({ success: true, link });
   }
 );
 
@@ -472,7 +468,7 @@ fastify.get("/works", async (request, reply) => {
 
 /* Route pour supprimer tous les works */
 fastify.delete("/works", async (request, reply) => {
-  db.deleteAllWorks(database);
+  await db.deleteAllWorks(database);
   reply.send({ success: true });
 });