brief-20/frontend/app/projects/new/page.tsx

"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import { useForm } from "react-hook-form";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Textarea } from "@/components/ui/textarea";
import { 
  ArrowLeft,
  Loader2,
  Save
} from "lucide-react";
import { toast } from "sonner";

// Type definitions
interface ProjectFormData {
  name: string;
  description: string;
}

export default function NewProjectPage() {
  const router = useRouter();
  const [isSubmitting, setIsSubmitting] = useState(false);
  
  const { register, handleSubmit, formState: { errors } } = useForm<ProjectFormData>({
    defaultValues: {
      name: "",
      description: ""
    }
  });

  const onSubmit = async (data: ProjectFormData) => {
    setIsSubmitting(true);
    try {
      // In a real app, this would be an API call to create a new project
      await new Promise(resolve => setTimeout(resolve, 1000));
      
      // Simulate a successful response with a project ID
      const projectId = Date.now();
      
      toast.success("Projet créé avec succès");
      router.push(`/projects/${projectId}`);
    } catch (error) {
      console.error("Error creating project:", error);
      toast.error("Erreur lors de la création du projet");
    } finally {
      setIsSubmitting(false);
    }
  };

  return (
    <div className="flex flex-col gap-6">
      <div className="flex items-center gap-2">
        <Button variant="outline" size="icon" asChild>
          <Link href="/projects">
            <ArrowLeft className="h-4 w-4" />
          </Link>
        </Button>
        <h1 className="text-3xl font-bold">Nouveau projet</h1>
      </div>

      <Card>
        <form onSubmit={handleSubmit(onSubmit)}>
          <CardHeader>
            <CardTitle>Informations du projet</CardTitle>
            <CardDescription>
              Créez un nouveau projet pour organiser vos groupes
            </CardDescription>
          </CardHeader>
          <CardContent className="space-y-4">
            <div className="space-y-2">
              <Label htmlFor="name">Nom du projet</Label>
              <Input
                id="name"
                placeholder="Ex: Formation Développement Web"
                {...register("name", { 
                  required: "Le nom du projet est requis",
                  minLength: {
                    value: 3,
                    message: "Le nom doit contenir au moins 3 caractères"
                  }
                })}
              />
              {errors.name && (
                <p className="text-sm text-destructive">{errors.name.message}</p>
              )}
            </div>

            <div className="space-y-2">
              <Label htmlFor="description">Description</Label>
              <Textarea
                id="description"
                placeholder="Décrivez votre projet..."
                rows={4}
                {...register("description", { 
                  required: "La description du projet est requise",
                  minLength: {
                    value: 10,
                    message: "La description doit contenir au moins 10 caractères"
                  }
                })}
              />
              {errors.description && (
                <p className="text-sm text-destructive">{errors.description.message}</p>
              )}
            </div>
          </CardContent>
          <CardFooter className="flex justify-between">
            <Button variant="outline" asChild>
              <Link href="/projects">Annuler</Link>
            </Button>
            <Button type="submit" disabled={isSubmitting}>
              {isSubmitting ? (
                <>
                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
                  Création en cours...
                </>
              ) : (
                <>
                  <Save className="mr-2 h-4 w-4" />
                  Créer le projet
                </>
              )}
            </Button>
          </CardFooter>
        </form>
      </Card>
    </div>
  );
}