import { NextRequest, NextResponse } from 'next/server';
import { prisma } from '@/lib/prisma';
import { getCurrentUser } from '@/lib/auth';

// GET - Récupérer les notifications de l'utilisateur
export async function GET(request: NextRequest) {
  try {
    const user = await getCurrentUser();
    if (!user) {
      return NextResponse.json({ error: 'Non autorisé' }, { status: 401 });
    }

    const searchParams = request.nextUrl.searchParams;
    const limit = parseInt(searchParams.get('limit') || '50');
    const unreadOnly = searchParams.get('unreadOnly') === 'true';

    const where: any = {
      userId: user.id,
    };

    if (unreadOnly) {
      where.read = false;
    }

    const notifications = await prisma.notification.findMany({
      where,
      orderBy: {
        createdAt: 'desc',
      },
      take: limit,
    });

    const unreadCount = await prisma.notification.count({
      where: {
        userId: user.id,
        read: false,
      },
    });

    return NextResponse.json({
      notifications,
      unreadCount,
    });
  } catch (error) {
    console.error('Erreur lors de la récupération des notifications:', error);
    return NextResponse.json(
      { error: 'Erreur serveur' },
      { status: 500 }
    );
  }
}

// POST - Marquer une notification comme lue
export async function POST(request: NextRequest) {
  try {
    const user = await getCurrentUser();
    if (!user) {
      return NextResponse.json({ error: 'Non autorisé' }, { status: 401 });
    }

    const body = await request.json();
    const { notificationId, markAllAsRead } = body;

    if (markAllAsRead) {
      // Marquer toutes les notifications comme lues
      await prisma.notification.updateMany({
        where: {
          userId: user.id,
          read: false,
        },
        data: {
          read: true,
        },
      });

      return NextResponse.json({ success: true });
    }

    if (!notificationId) {
      return NextResponse.json(
        { error: 'ID de notification requis' },
        { status: 400 }
      );
    }

    // Vérifier que la notification appartient à l'utilisateur
    const notification = await prisma.notification.findFirst({
      where: {
        id: notificationId,
        userId: user.id,
      },
    });

    if (!notification) {
      return NextResponse.json(
        { error: 'Notification non trouvée' },
        { status: 404 }
      );
    }

    // Marquer comme lue
    await prisma.notification.update({
      where: { id: notificationId },
      data: { read: true },
    });

    return NextResponse.json({ success: true });
  } catch (error) {
    console.error('Erreur lors de la mise à jour de la notification:', error);
    return NextResponse.json(
      { error: 'Erreur serveur' },
      { status: 500 }
    );
  }
}