'use client';

import { useState, useEffect, useCallback } from 'react';
import { motion } from 'framer-motion';
import { useRouter } from 'next/navigation';
import {
  Calendar, Clock, CheckCircle, XCircle, Eye, Loader2, Search,
  MapPin, DollarSign, Home, ArrowLeft,
} from 'lucide-react';
import toast, { Toaster } from 'react-hot-toast';
import AuthService from '../services/AuthService';
import { getRentProperty } from '../utils/api';

const API_BASE = process.env.NEXT_PUBLIC_API_URL || 'https://45.93.137.91.nip.io/api';

const STATUS_MAP = ['pending','ownerConfirmed','depositPaid','depositConfirmed','completed','cancelled'];

const STATUS_UI = {
  pending:          { label: 'قيد الانتظار', color: 'bg-yellow-100 text-yellow-800', icon: Clock },
  ownerConfirmed:   { label: 'مؤكد من المالك', color: 'bg-blue-100 text-blue-800', icon: CheckCircle },
  depositPaid:      { label: 'تم دفع السلفة', color: 'bg-indigo-100 text-indigo-800', icon: DollarSign },
  depositConfirmed: { label: 'مؤكد', color: 'bg-green-100 text-green-800', icon: CheckCircle },
  completed:        { label: 'منتهي', color: 'bg-green-100 text-green-800', icon: CheckCircle },
  cancelled:        { label: 'ملغي', color: 'bg-gray-100 text-gray-800', icon: XCircle },
};

function statusLabel(code) { return STATUS_UI[STATUS_MAP[code]]?.label ?? String(code); }
function statusColor(code) { return STATUS_UI[STATUS_MAP[code]]?.color ?? 'bg-gray-100 text-gray-700'; }
function statusIcon(code) { return STATUS_UI[STATUS_MAP[code]]?.icon ?? Clock; }

function StatusBadge({ code }) {
  const Icon = statusIcon(code);
  return (
    <span className={`inline-flex items-center gap-1 px-2 py-1 rounded-lg text-xs font-medium ${statusColor(code)}`}>
      <Icon className="w-3 h-3" /> {statusLabel(code)}
    </span>
  );
}

async function enrich(reservation) {
  if (!reservation.propertyId) return reservation;
  try {
    const prop = await getRentProperty(reservation.propertyId);
    reservation._prop = prop?.propertyInformation ?? prop ?? null;
  } catch { /* skip */ }
  return reservation;
}

const propAddr = (p) => p?.address ?? '';
const propImages = (p) => Array.isArray(p?.images) ? p.images : [];
const propBeds = (p) => p?.numberOfBedRooms ?? 0;
const propBaths = (p) => p?.numberOfBathRooms ?? 0;

function ReservationCard({ r, onViewDetails }) {
  const p = r._prop;
  const imgs = propImages(p);
  const img = imgs.length > 0 ? `${API_BASE}${imgs[0]}` : null;
  const addr = propAddr(p);
  const beds = propBeds(p);
  const baths = propBaths(p);

  return (
    <motion.div initial={{ opacity:0,y:20 }} animate={{ opacity:1,y:0 }}
      className="bg-white rounded-2xl shadow-sm hover:shadow-md transition-all border border-gray-200 overflow-hidden">
      <div className="p-5">
        {img && <div className="mb-4 w-full h-40 rounded-xl overflow-hidden"><img src={img} alt="" className="w-full h-full object-cover" /></div>}
        <div className="flex justify-between items-start mb-3">
          <div>
            <StatusBadge code={r.status} />
            {addr && <div className="flex items-center gap-1 text-gray-500 text-sm mt-1"><MapPin className="w-4 h-4"/>{addr}</div>}
          </div>
          <div className="text-left">
            <div className="text-lg font-bold text-amber-600">{r.totalPrice?.toLocaleString() ?? '—'}</div>
            <div className="text-xs text-gray-500">السعر الإجمالي</div>
          </div>
        </div>
        {(beds||baths) && <div className="flex gap-3 mb-3 text-sm text-gray-600">{beds>0&&<span>{beds} غرف</span>}{baths>0&&<span>{baths} حمامات</span>}</div>}
        <div className="grid grid-cols-2 gap-3 mb-4 text-center">
          <div className="bg-gray-50 p-2 rounded-lg">
            <Calendar className="w-4 h-4 text-amber-500 mx-auto mb-1"/><div className="text-xs text-gray-500">من</div>
            <div className="text-sm font-medium">{new Date(r.startDate).toLocaleDateString('ar')}</div>
          </div>
          <div className="bg-gray-50 p-2 rounded-lg">
            <Calendar className="w-4 h-4 text-amber-500 mx-auto mb-1"/><div className="text-xs text-gray-500">إلى</div>
            <div className="text-sm font-medium">{new Date(r.endDate).toLocaleDateString('ar')}</div>
          </div>
        </div>
        <div className="flex gap-3 pt-3 border-t border-gray-100">
          <button onClick={() => onViewDetails(r)}
            className="flex-1 bg-gray-100 text-gray-700 py-2 rounded-xl text-sm font-medium hover:bg-gray-200 transition-colors flex items-center justify-center gap-2">
            <Eye className="w-4 h-4"/> التفاصيل
          </button>
        </div>
      </div>
    </motion.div>
  );
}

function DetailsModal({ r, isOpen, onClose }) {
  if (!isOpen || !r) return null;
  const p = r._prop;

  return (
    <motion.div initial={{opacity:0}} animate={{opacity:1}} exit={{opacity:0}}
      className="fixed inset-0 bg-black/50 backdrop-blur-sm flex items-center justify-center p-4 z-50" onClick={onClose}>
      <motion.div initial={{scale:0.9,y:20}} animate={{scale:1,y:0}} exit={{scale:0.9,y:20}}
        className="bg-white rounded-2xl w-full max-w-2xl max-h-[90vh] overflow-y-auto shadow-2xl" onClick={e=>e.stopPropagation()}>
        <div className="sticky top-0 bg-gradient-to-r from-amber-500 to-amber-600 p-6 text-white">
          <div className="flex justify-between items-center">
            <h2 className="text-xl font-bold">تفاصيل الحجز</h2>
            <button onClick={onClose} className="p-1 hover:bg-white/20 rounded-full"><XCircle className="w-6 h-6"/></button>
          </div>
          <p className="text-amber-100 text-sm mt-1">رقم الحجز: #{r.id}</p>
        </div>
        <div className="p-6 space-y-6">
          {p && <div className="bg-gray-50 p-4 rounded-xl">
            <h3 className="font-bold text-gray-900 mb-3 flex items-center gap-2"><Home className="w-5 h-5 text-amber-500"/> معلومات العقار</h3>
            <p><span className="text-gray-500">العنوان:</span> {propAddr(p)||'—'}</p>
            {(propBeds(p)||propBaths(p)) && <div className="flex gap-3 mt-2">
              {propBeds(p)>0&&<span className="text-sm bg-white px-2 py-1 rounded-lg">{propBeds(p)} غرف</span>}
              {propBaths(p)>0&&<span className="text-sm bg-white px-2 py-1 rounded-lg">{propBaths(p)} حمامات</span>}
            </div>}
          </div>}
          <div className="bg-gray-50 p-4 rounded-xl">
            <h3 className="font-bold text-gray-900 mb-3 flex items-center gap-2"><Calendar className="w-5 h-5 text-amber-500"/> تفاصيل الحجز</h3>
            <div className="grid grid-cols-2 gap-4">
              <div><p className="text-gray-500">تاريخ البداية</p><p className="font-medium">{new Date(r.startDate).toLocaleDateString('ar')}</p></div>
              <div><p className="text-gray-500">تاريخ النهاية</p><p className="font-medium">{new Date(r.endDate).toLocaleDateString('ar')}</p></div>
              <div><p className="text-gray-500">الحالة</p><StatusBadge code={r.status}/></div>
              <div><p className="text-gray-500">تاريخ الإنشاء</p><p className="font-medium">{new Date(r.createdAt).toLocaleDateString('ar')}</p></div>
            </div>
          </div>
          <div className="bg-amber-50 p-4 rounded-xl">
            <h3 className="font-bold text-amber-700 mb-3 flex items-center gap-2"><DollarSign className="w-5 h-5"/> المعلومات المالية</h3>
            <div className="flex justify-between font-bold"><span className="text-gray-900">الإجمالي</span><span className="text-amber-600 text-lg">{r.totalPrice?.toLocaleString()??'—'}</span></div>
          </div>
        </div>
      </motion.div>
    </motion.div>
  );
}

export default function UserReservationsPage() {
  const router = useRouter();
  const [reservations, setReservations] = useState([]);
  const [filtered, setFiltered] = useState([]);
  const [loading, setLoading] = useState(true);
  const [selected, setSelected] = useState(null);
  const [filterStatus, setFilterStatus] = useState('all');
  const [searchTerm, setSearchTerm] = useState('');

  useEffect(() => { if (!AuthService.getUser()) { router.push('/login'); return; } loadReservations(); }, [router]);

  const loadReservations = useCallback(async () => {
    try {
      const res = await fetch(`${API_BASE}/Reservations/GetUserResevations`, {
        headers: { Authorization: `Bearer ${AuthService.getToken()}` },
      });
      if (!res.ok) throw new Error(`HTTP ${res.status}`);
      const json = await res.json();
      let list = json.data || json || [];
      if (!Array.isArray(list)) list = [];
      const enriched = await Promise.all(list.map(enrich));
      setReservations(enriched);
      setFiltered(enriched);
    } catch (err) {
      console.error(err);
      toast.error('فشل تحميل الحجوزات');
      setReservations([]);
      setFiltered([]);
    }
    setLoading(false);
  }, []);

  useEffect(() => {
    let r = reservations;
    if (filterStatus !== 'all') r = r.filter(x => STATUS_MAP[x.status] === filterStatus);
    if (searchTerm) { const q = searchTerm.toLowerCase(); r = r.filter(x => propAddr(x._prop).toLowerCase().includes(q) || String(x.id).includes(q)); }
    setFiltered(r);
  }, [reservations, filterStatus, searchTerm]);

  const allStatuses = [...new Set(reservations.map(r => STATUS_MAP[r.status]))];
  const counts = { all: reservations.length, ...Object.fromEntries(allStatuses.map(s => [s, reservations.filter(r => STATUS_MAP[r.status] === s).length])) };

  if (loading) return <div className="min-h-screen bg-gray-50 flex items-center justify-center"><Loader2 className="w-12 h-12 text-amber-500 animate-spin"/></div>;

  return (
    <div className="min-h-screen bg-gray-50 py-8" dir="rtl">
      <Toaster position="top-center" reverseOrder={false} />
      <DetailsModal r={selected} isOpen={!!selected} onClose={() => setSelected(null)} />
      <div className="container mx-auto px-4">
        <motion.div initial={{opacity:0,y:-20}} animate={{opacity:1,y:0}} className="mb-8">
          <button onClick={() => router.back()} className="flex items-center gap-2 text-gray-600 hover:text-amber-600 mb-4"><ArrowLeft className="w-5 h-5"/> الرجوع</button>
          <h1 className="text-3xl font-bold text-gray-900 mb-2">حجوزاتي</h1>
          <p className="text-gray-600">لديك {reservations.length} حجز</p>
        </motion.div>
        <div className="grid grid-cols-2 md:grid-cols-4 gap-4 mb-8">
          {Object.entries(counts).map(([s, c]) => (
            <motion.div key={s} initial={{opacity:0,y:20}} animate={{opacity:1,y:0}}
              className={`bg-white rounded-xl shadow-sm p-4 text-center border cursor-pointer hover:shadow-md transition-all ${filterStatus===s?'border-amber-500 bg-amber-50':'border-gray-200'}`}
              onClick={() => setFilterStatus(s)}>
              <div className="text-2xl font-bold text-amber-600">{c}</div>
              <div className="text-sm text-gray-600">{s==='all'?'الكل':(STATUS_UI[s]?.label||s)}</div>
            </motion.div>
          ))}
        </div>
        <div className="mb-6 relative">
          <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-5 h-5 text-gray-400"/>
          <input type="text" placeholder="ابحث بعنوان العقار أو رقم الحجز..." value={searchTerm} onChange={e=>setSearchTerm(e.target.value)}
            className="w-full pl-10 pr-4 py-3 border border-gray-300 rounded-xl focus:outline-none focus:ring-2 focus:ring-amber-500"/>
        </div>
        {filtered.length === 0 ? (
          <div className="bg-white rounded-2xl p-12 text-center border-2 border-dashed border-gray-300">
            <Calendar className="w-12 h-12 text-amber-600 mx-auto mb-4"/>
            <h3 className="text-xl font-bold text-gray-900 mb-2">لا توجد حجوزات</h3>
            <p className="text-gray-600">لم تقم بأي حجز حتى الآن</p>
          </div>
        ) : (
          <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
            {filtered.map(r => <ReservationCard key={r.id} r={r} onViewDetails={setSelected} />)}
          </div>
        )}
      </div>
    </div>
  );
}