add alert message on auth systeme

src/app/(auth)/login/page.tsx

@@ -1,12 +1,13 @@
 "use client";
 
-import React from "react";
+import React, { useState } from "react";
 import axios from "axios";
 import LoginForm from "@/components/auth/LoginForm";
 
 const LoginPage: React.FC = () => {
+  const [error, setError] = useState("");
+
   const handleLogin = async (email: string, password: string) => {
-    console.log('Connexion de l\'utilisateur:', email, password);
     
     try {
       const response = await axios.post("/api/auth/login", {
@@ -14,15 +15,21 @@ const LoginPage: React.FC = () => {
         password,
       });
 
-      console.log('Utilisateur connecté:', response.data);
-    } catch (error) {
-      console.error(error);
+      setError(""); // Reset errors
+      // Redirect to home page
+      window.location.href = "/";
+    } catch (error: any) {
+      if (error.response && error.response.status === 400) {
+        setError("L'adresse e-mail ou le mot de passe est incorrect.");
+      } else {
+        setError("Une erreur s'est produite lors de la connexion.");
+      }
     }
   };
 
   return (
     <div className="min-h-screen flex items-center justify-center bg-gray-100">
-      <LoginForm onSubmit={handleLogin} />
+      <LoginForm onSubmit={handleLogin} error={error} setError={setError} />
     </div>
   );
 };

src/app/(auth)/signup/page.tsx

@@ -1,12 +1,13 @@
 "use client";
 
-import React from "react";
+import React, { useState } from "react";
 import axios from "axios";
 import SignupForm from "@/components/auth/SignupForm";
 
 const SignupPage: React.FC = () => {
+  const [error, setError] = useState("");
+
   const handleSignup = async (username: string, email: string, password: string) => {
-    console.log('Création de l\'utilisateur:', username, email, password);
     
     try {
       const response = await axios.post("/api/auth/signup", {
@@ -15,15 +16,26 @@ const SignupPage: React.FC = () => {
         password,
       });
 
-      console.log('Utilisateur créé:', response.data);
-    } catch (error) {
-      console.error(error);
+      // Redirect to home page
+      window.location.href = "/";
+    } catch (error: any) {
+      if (error.response && error.response.status === 400) {
+        if (error.response.data.error === "Username already taken") {
+          setError("Le nom d'utilisateur est déjà pris.");
+        } else if (error.response.data.error === "Email already taken") {
+          setError("L'adresse e-mail est déjà utilisée.");
+        } else {
+          setError("Une erreur s'est produite lors de la création de l'utilisateur.");
+        }
+      } else {
+        setError("Une erreur s'est produite lors de la création de l'utilisateur.");
+      }
     }
   };
 
   return (
     <div className="min-h-screen flex items-center justify-center bg-gray-100">
-      <SignupForm onSubmit={handleSignup} />
+      <SignupForm onSubmit={handleSignup} error={error} setError={setError} />
     </div>
   );
 };

src/components/auth/LoginForm.tsx

@@ -4,12 +4,13 @@ import React, { useState } from "react";
 
 interface LoginFormProps {
   onSubmit: (email: string, password: string) => void;
+  error: string;
+  setError: (message: string) => void;
 }
 
-const LoginForm: React.FC<LoginFormProps> = ({ onSubmit }) => {
+const LoginForm: React.FC<LoginFormProps> = ({ onSubmit, error, setError }) => {
   const [email, setEmail] = useState("");
   const [password, setPassword] = useState("");
-  const [error, setError] = useState("");
 
   const handleSubmit = (e: React.FormEvent) => {
     e.preventDefault();

src/components/auth/SignupForm.tsx

@@ -4,13 +4,14 @@ import React, { useState } from "react";
 
 interface SignupFormProps {
   onSubmit: (username: string, email: string, password: string) => void;
+  error: string;
+  setError: (message: string) => void;
 }
 
-const SignupForm: React.FC<SignupFormProps> = ({ onSubmit }) => {
+const SignupForm: React.FC<SignupFormProps> = ({ onSubmit, error, setError }) => {
   const [username, setUsername] = useState("");
   const [email, setEmail] = useState("");
   const [password, setPassword] = useState("");
-  const [error, setError] = useState("");
 
   const handleSubmit = (e: React.FormEvent) => {
     e.preventDefault();