import { NextRequest, NextResponse } from 'next/server'
import { db } from '@/lib/db'
import { requireAuth } from '@/lib/api-auth'

export async function GET(request: NextRequest) {
  try {
    const authResult = await requireAuth()(request)
    if ('error' in authResult) return authResult.error

    const { user } = authResult
    const { searchParams } = new URL(request.url)
    const unreadOnly = searchParams.get('unreadOnly') === 'true'
    const page = parseInt(searchParams.get('page') || '1')
    const limit = parseInt(searchParams.get('limit') || '20')

    const where: { userId: string; isRead?: boolean } = { userId: user.id }
    if (unreadOnly) where.isRead = false

    const [notifications, total] = await Promise.all([
      db.notification.findMany({
        where,
        orderBy: { createdAt: 'desc' },
        skip: (page - 1) * limit,
        take: limit,
      }),
      db.notification.count({ where }),
    ])

    return NextResponse.json({
      notifications,
      pagination: {
        page,
        limit,
        total,
        totalPages: Math.ceil(total / limit),
      },
    })
  } catch (error) {
    console.error('Error al listar notificaciones:', error)
    return NextResponse.json(
      { error: 'Error interno del servidor' },
      { status: 500 }
    )
  }
}