import { useState } from "react";
import { useNavigate } from "react-router-dom";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Button } from "@/components/ui/button";
import { Label } from "@/components/ui/label";
import { Lock, User } from "lucide-react";

export default function Login() {
  const navigate = useNavigate();
  const [username, setUsername] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState("");
  const [isLoading, setIsLoading] = useState(false);


  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setError("");
    
    if (!username.trim() || !password.trim()) {
      setError("Veuillez remplir tous les champs");
      return;
    }

    setIsLoading(true);

    try {
      const response = await fetch('/api/login', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        // Le navigateur doit inclure les cookies dans la requête et accepter le Set-Cookie
        credentials: 'include', 
        body: JSON.stringify({
          username: username,
          password: password
        }),
      });

      const data = await response.json();

      if (response.ok) {
        console.log('Connexion réussie:', data.message);
        // Vous pouvez stocker le rôle si besoin pour l'affichage UI
        localStorage.setItem('userRole', data.role);

        localStorage.setItem('isLoggedIn', 'true');

        navigate("/");
      } else {
        console.error('Erreur:', data.error);
      }
    } catch (error) {
      console.error('Erreur réseau:', error);
    }
    
    // TODO: Implémenter l'authentification ici
    console.log("Login attempt:", { username, password });
    
    setIsLoading(false);
  };

  return (
    <div className="min-h-screen bg-background flex items-center justify-center p-4">
      <Card className="w-full max-w-md">
        <CardHeader className="text-center">
          <div className="mx-auto mb-4 w-12 h-12 bg-primary/10 rounded-full flex items-center justify-center">
            <Lock className="w-6 h-6 text-primary" />
          </div>
          <CardTitle className="text-2xl">Connexion</CardTitle>
          <CardDescription>
            Connectez-vous pour accéder à l'administration
          </CardDescription>
        </CardHeader>
        <CardContent>
          <form onSubmit={handleSubmit} className="space-y-4">
            <div className="space-y-2">
              <Label htmlFor="username">Nom d'utilisateur</Label>
              <div className="relative">
                <User className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
                <Input
                  id="username"
                  type="text"
                  placeholder="Entrez votre nom d'utilisateur"
                  value={username}
                  onChange={(e) => setUsername(e.target.value)}
                  className="pl-10"
                  disabled={isLoading}
                />
              </div>
            </div>
            
            <div className="space-y-2">
              <Label htmlFor="password">Mot de passe</Label>
              <div className="relative">
                <Lock className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
                <Input
                  id="password"
                  type="password"
                  placeholder="Entrez votre mot de passe"
                  value={password}
                  onChange={(e) => setPassword(e.target.value)}
                  className="pl-10"
                  disabled={isLoading}
                />
              </div>
            </div>

            {error && (
              <p className="text-sm text-destructive text-center">{error}</p>
            )}

            <Button type="submit" className="w-full" disabled={isLoading}>
              {isLoading ? "Connexion..." : "Se connecter"}
            </Button>
          </form>
        </CardContent>
      </Card>
    </div>
  );
}