import { createClient } from '@/lib/supabase/server'
import { redirect } from 'next/navigation'
import Link from 'next/link'
import { Download, ExternalLink, ShoppingBag, ArrowLeft, Package } from 'lucide-react'
import { Button } from '@/components/ui/button'
import { Card, CardContent } from '@/components/ui/card'
import { Badge } from '@/components/ui/badge'
import type { Order } from '@/lib/types'
import { resolveSupabaseUrl } from '@/lib/utils'

const statusLabel: Record<string, string> = {
  pending: 'Eingegangen',
  active: 'In Bearbeitung',
  cancelled: 'Storniert',
}

const statusClass: Record<string, string> = {
  pending: 'bg-amber-500/20 text-amber-400 border-amber-500/30',
  active: 'bg-green-500/20 text-green-400 border-green-500/30',
  cancelled: 'bg-red-500/20 text-red-400 border-red-500/30',
}

export default async function MyOrdersPage() {
  const supabase = await createClient()

  const { data: { user } } = await supabase.auth.getUser()
  if (!user) redirect('/auth/login')

  // Get user's company_id and fetch all company orders
  const { data: dbUser } = await supabase
    .from('users')
    .select('company_id')
    .eq('id', user.id)
    .single()

  let query = supabase.from('orders').select('*')

  if (dbUser?.company_id) {
    const { data: companyUsers } = await supabase
      .from('users')
      .select('id')
      .eq('company_id', dbUser.company_id)
      
    const userIds = (companyUsers ?? []).map(u => u.id)
    query = query.in('user_id', userIds)
  } else {
    query = query.eq('user_id', user.id)
  }

  const { data: orders, error } = await query.order('created_at', { ascending: false })

  return (
    <div className="min-h-screen bg-[#020617] text-white px-4 py-12">
      <div className="max-w-4xl mx-auto space-y-8">
        {/* Header */}
        <div className="flex items-center gap-4">
          <Link href="/">
            <Button variant="ghost" size="sm" className="text-slate-400 hover:text-white">
              <ArrowLeft className="w-4 h-4 mr-2" /> Startseite
            </Button>
          </Link>
          <div>
            <h1 className="text-3xl font-extrabold tracking-tight flex items-center gap-3">
              <ShoppingBag className="w-8 h-8 text-primary" />
              Meine Anfragen
            </h1>
            <p className="text-slate-400 text-sm mt-1">
              Alle Ihre Anfragen auf einen Blick – inkl. aktuellem Status.
            </p>
          </div>
        </div>

        {/* Fehler */}
        {error && (
          <div className="bg-red-500/10 border border-red-500/20 text-red-400 rounded-xl p-4 text-sm">
            Fehler beim Laden der Anfragen: {error.message}
          </div>
        )}

        {/* Keine Anfragen */}
        {!error && (!orders || orders.length === 0) && (
          <Card className="glass-dark border-white/10">
            <CardContent className="flex flex-col items-center justify-center py-16 gap-4">
              <Package className="w-12 h-12 text-slate-600" />
              <p className="text-slate-400 text-lg">Sie haben noch keine Anfragen aufgegeben.</p>
              <Link href="/order">
                <Button>Jetzt konfigurieren</Button>
              </Link>
            </CardContent>
          </Card>
        )}

        {/* Anfragenliste */}
        <div className="space-y-4">
          {(orders ?? []).map((order) => {
            const o = order as Order
            const items = o.order_data?.items ?? []
            return (
              <Card key={o.id} className="glass-dark border-white/10 hover:border-white/20 transition-colors">
                <CardContent className="p-6 space-y-4">
                  {/* Kopfzeile */}
                  <div className="flex items-start justify-between gap-4 flex-wrap">
                    <div className="space-y-1">
                      <p className="text-xs text-slate-500 uppercase tracking-wider">Anfragenummer</p>
                      <p className="font-mono font-bold text-primary text-lg">#{o.order_number}</p>
                    </div>
                    <div className="space-y-1 text-right">
                      <p className="text-xs text-slate-500 uppercase tracking-wider">Datum</p>
                      <p className="text-white text-sm">
                        {new Date(o.created_at).toLocaleDateString('de-DE', {
                          day: '2-digit', month: '2-digit', year: 'numeric',
                        })}
                      </p>
                    </div>
                    <div className="space-y-1">
                      <p className="text-xs text-slate-500 uppercase tracking-wider">Status</p>
                      <Badge className={statusClass[o.status] ?? 'bg-slate-500/20 text-slate-300'}>
                        {statusLabel[o.status] ?? o.status}
                      </Badge>
                    </div>
                    <div className="space-y-1 text-right">
                      <p className="text-xs text-slate-500 uppercase tracking-wider">Gesamt</p>
                      <p className="font-bold text-white text-lg">
                        {new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(o.total_price)}
                      </p>
                    </div>
                  </div>

                  {/* Produkte kurz */}
                  {items.length > 0 && (
                    <div className="flex flex-wrap gap-2">
                      {items.map((item, i) => (
                        <span
                          key={item.product_id}
                          className="text-xs bg-white/5 border border-white/10 rounded-full px-3 py-1 text-slate-300"
                        >
                          {item.product_name}
                          {item.selected_modules.length > 0 && (
                            <span className="text-slate-500 ml-1">+{item.selected_modules.length} Module</span>
                          )}
                        </span>
                      ))}
                    </div>
                  )}

                  {/* Aktionen */}
                  <div className="flex gap-2 flex-wrap pt-1">
                    <Link href={`/order/success?id=${o.id}`}>
                      <Button variant="outline" size="sm" className="border-white/10 hover:bg-white/10 text-xs">
                        Details ansehen
                      </Button>
                    </Link>
                    {o.status !== 'completed' && (
                      <Link href={`/order?id=${o.id}`}>
                        <Button variant="outline" size="sm" className="border-amber-500/20 hover:bg-amber-500/10 hover:border-amber-500/40 text-amber-400 text-xs">
                          Bearbeiten
                        </Button>
                      </Link>
                    )}
                    {o.pdf_url && (
                      <>
                        <Button variant="ghost" size="sm" asChild className="text-xs text-slate-400 hover:text-white">
                          <a href={resolveSupabaseUrl(o.pdf_url)} target="_blank" rel="noopener noreferrer">
                            <ExternalLink className="w-3 h-3 mr-1" /> Anfrage ansehen
                          </a>
                        </Button>
                        <Button variant="ghost" size="sm" asChild className="text-xs text-slate-400 hover:text-white">
                          <a href={resolveSupabaseUrl(o.pdf_url)} download>
                            <Download className="w-3 h-3 mr-1" /> PDF
                          </a>
                        </Button>
                      </>
                    )}
                  </div>
                </CardContent>
              </Card>
            )
          })}
        </div>
      </div>
    </div>
  )
}