'use client';

import { useState, useRef, useEffect } from 'react';
import { motion, AnimatePresence } from 'framer-motion';
import { useRouter } from 'next/navigation';
import Link from 'next/link';
import Image from 'next/image';
import {
  User,
  Mail,
  Phone,
  Lock,
  Eye,
  EyeOff,
  MessageCircle,
  Camera,
  Upload,
  X,
  CheckCircle,
  XCircle,
  AlertCircle,
  ArrowLeft,
  Building,
  Loader2,
  Home
} from 'lucide-react';
import toast, { Toaster } from 'react-hot-toast';

export default function OwnerRegisterPage() {
  const router = useRouter();
  const [step, setStep] = useState(1);
  const [showPassword, setShowPassword] = useState(false);
  const [showConfirmPassword, setShowConfirmPassword] = useState(false);
  const [isLoading, setIsLoading] = useState(false);
  const [formData, setFormData] = useState({
    name: '',
    email: '',
    phone: '',
    whatsapp: '',
    password: '',
    confirmPassword: '',
    agreeTerms: false
  });
  const [idImages, setIdImages] = useState({
    front: null,
    back: null
  });
  const [idImagePreviews, setIdImagePreviews] = useState({
    front: '',
    back: ''
  });
  const [errors, setErrors] = useState({});
  
  const fileInputFrontRef = useRef(null);
  const fileInputBackRef = useRef(null);

  const handleImageUpload = (side, file) => {
    if (!file) return;

    if (!file.type.startsWith('image/')) {
      toast.error('الرجاء اختيار صورة صالحة');
      return;
    }

    if (file.size > 5 * 1024 * 1024) {
      toast.error('حجم الصورة يجب أن يكون أقل من 5 ميجابايت');
      return;
    }

    const reader = new FileReader();
    reader.onloadend = () => {
      setIdImagePreviews(prev => ({
        ...prev,
        [side]: reader.result
      }));
    };
    reader.readAsDataURL(file);

    setIdImages(prev => ({
      ...prev,
      [side]: file
    }));

    toast.success(`تم رفع الصورة بنجاح`, {
      style: { background: '#dcfce7', color: '#166534' }
    });
  };

  const validateEmail = (email) => {
    const re = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
    return re.test(email);
  };

  const validatePhone = (phone) => {
    const re = /^(09|05)[0-9]{8}$/;
    return re.test(phone);
  };

  const validateStep1 = () => {
    const newErrors = {};

    if (!formData.name) {
      newErrors.name = 'الاسم الكامل مطلوب';
    } else if (formData.name.length < 3) {
      newErrors.name = 'الاسم يجب أن يكون 3 أحرف على الأقل';
    }

    if (!formData.email) {
      newErrors.email = 'البريد الإلكتروني مطلوب';
    } else if (!validateEmail(formData.email)) {
      newErrors.email = 'البريد الإلكتروني غير صالح';
    }

    if (!formData.whatsapp) {
      newErrors.whatsapp = 'رقم الواتساب مطلوب';
    } else if (!validatePhone(formData.whatsapp)) {
      newErrors.whatsapp = 'رقم الواتساب غير صالح (يجب أن يبدأ 09 أو 05)';
    }

    if (formData.phone && !validatePhone(formData.phone)) {
      newErrors.phone = 'رقم الهاتف غير صالح';
    }

    if (!formData.password) {
      newErrors.password = 'كلمة المرور مطلوبة';
    } else if (formData.password.length < 6) {
      newErrors.password = 'كلمة المرور يجب أن تكون 6 أحرف على الأقل';
    }

    if (formData.password !== formData.confirmPassword) {
      newErrors.confirmPassword = 'كلمات المرور غير متطابقة';
    }

    setErrors(newErrors);
    return Object.keys(newErrors).length === 0;
  };

  const validateStep2 = () => {
    const newErrors = {};

    if (!idImages.front) {
      newErrors.front = 'صورة الوجه الأمامي للهوية مطلوبة';
    }
    if (!idImages.back) {
      newErrors.back = 'صورة الوجه الخلفي للهوية مطلوبة';
    }

    setErrors(newErrors);
    return Object.keys(newErrors).length === 0;
  };

  const handleNextStep = () => {
    if (validateStep1()) {
      setStep(2);
      window.scrollTo({ top: 0, behavior: 'smooth' });
    } else {
      toast.error('يرجى تصحيح الأخطاء في النموذج');
    }
  };

  const handleSubmit = async (e) => {
    e.preventDefault();

    if (!validateStep2()) {
      toast.error('يرجى إكمال جميع الصور المطلوبة');
      return;
    }

    if (!formData.agreeTerms) {
      toast.error('يجب الموافقة على الشروط والأحكام');
      return;
    }

    setIsLoading(true);

    setTimeout(() => {
      setIsLoading(false);
      toast.success('تم إنشاء الحساب بنجاح!', {
        style: { background: '#dcfce7', color: '#166534' },
        duration: 3000
      });

      localStorage.setItem('user', JSON.stringify({
        name: formData.name,
        email: formData.email,
        role: 'owner',
        avatar: formData.name.charAt(0).toUpperCase()
      }));

      setTimeout(() => {
        router.push('/');
      }, 1500);
    }, 2000);
  };

  const fadeInUp = {
    initial: { opacity: 0, y: 20 },
    animate: { opacity: 1, y: 0 },
    transition: { duration: 0.5 }
  };

  const staggerContainer = {
    animate: {
      transition: {
        staggerChildren: 0.1
      }
    }
  };

  return (
    <div className="min-h-screen bg-gradient-to-br from-gray-950 via-gray-900 to-gray-950 flex items-center justify-center p-4 relative overflow-hidden">
      <Toaster position="top-center" reverseOrder={false} />

      <div className="absolute inset-0 overflow-hidden">
        {[...Array(20)].map((_, i) => (
          <motion.div
            key={i}
            className="absolute rounded-full bg-amber-500/10"
            style={{
              left: `${Math.random() * 100}%`,
              top: `${Math.random() * 100}%`,
              width: Math.random() * 200 + 50,
              height: Math.random() * 200 + 50,
            }}
            animate={{
              x: [0, Math.random() * 100 - 50, 0],
              y: [0, Math.random() * 100 - 50, 0],
            }}
            transition={{
              duration: Math.random() * 15 + 15,
              repeat: Infinity,
              ease: "linear"
            }}
          />
        ))}
      </div>

      <motion.div
        initial={{ opacity: 0, scale: 0.95 }}
        animate={{ opacity: 1, scale: 1 }}
        transition={{ duration: 0.5 }}
        className="relative z-10 w-full max-w-2xl"
      >
        <div className="mb-8">
          <div className="flex items-center justify-between mb-4">
            <Link
              href="/auth/choose-role"
              className="flex items-center gap-2 text-gray-400 hover:text-white transition-colors group"
            >
              <motion.div whileHover={{ x: -5 }}>
                <ArrowLeft className="w-4 h-4" />
              </motion.div>
              <span>العودة</span>
            </Link>
            <div className="flex items-center gap-2">
              <span className="text-sm text-gray-400">خطوة {step} من 2</span>
            </div>
          </div>

          <div className="flex gap-2">
            <motion.div
              className={`h-2 flex-1 rounded-full ${
                step >= 1 ? 'bg-amber-500' : 'bg-gray-700'
              }`}
              animate={{ scaleX: step >= 1 ? 1 : 0.5 }}
            />
            <motion.div
              className={`h-2 flex-1 rounded-full ${
                step >= 2 ? 'bg-amber-500' : 'bg-gray-700'
              }`}
              animate={{ scaleX: step >= 2 ? 1 : 0.5 }}
            />
          </div>
        </div>

        <motion.div
          key={step}
          initial={{ opacity: 0, x: 20 }}
          animate={{ opacity: 1, x: 0 }}
          exit={{ opacity: 0, x: -20 }}
          transition={{ duration: 0.3 }}
          className="bg-white/5 backdrop-blur-xl rounded-3xl shadow-2xl border border-white/10 overflow-hidden"
        >
          <div className="bg-gradient-to-r from-amber-500 to-amber-600 p-8 text-center relative overflow-hidden">
            <motion.div
              initial={{ scale: 0 }}
              animate={{ scale: 1 }}
              transition={{ delay: 0.2, type: "spring" }}
              className="absolute -top-10 -right-10 w-40 h-40 bg-white/10 rounded-full"
            />
            
            <motion.div
              initial={{ y: 20, opacity: 0 }}
              animate={{ y: 0, opacity: 1 }}
              className="relative z-10"
            >
              <motion.div
                animate={{ rotate: [0, 10, -10, 0] }}
                transition={{ duration: 2, repeat: Infinity }}
                className="w-20 h-20 mx-auto mb-4 bg-white/20 rounded-2xl flex items-center justify-center backdrop-blur-sm"
              >
                <Building className="w-10 h-10 text-white" />
              </motion.div>
              <h1 className="text-3xl font-bold text-white mb-2">
                {step === 1 ? 'معلومات المالك' : 'الوثائق الرسمية'}
              </h1>
              <p className="text-amber-100">
                {step === 1 
                  ? 'أدخل معلوماتك الأساسية للتواصل'
                  : 'يرجى رفع صور الهوية الشخصية للتحقق'}
              </p>
            </motion.div>
          </div>

          <div className="p-8">
            <motion.form
              variants={staggerContainer}
              initial="initial"
              animate="animate"
              onSubmit={step === 1 ? handleNextStep : handleSubmit}
              className="space-y-6"
            >
              {step === 1 ? (
                <>
                  <motion.div variants={fadeInUp}>
                    <label className="block text-sm font-medium text-gray-300 mb-2">
                      الاسم الكامل <span className="text-red-500">*</span>
                    </label>
                    <div className="relative group">
                      <div className="absolute inset-y-0 right-0 pr-3 flex items-center pointer-events-none">
                        <User className={`w-5 h-5 ${
                          errors.name ? 'text-red-500' : 'text-gray-400 group-focus-within:text-amber-500'
                        }`} />
                      </div>
                      <input
                        type="text"
                        value={formData.name}
                        onChange={(e) => {
                          setFormData({...formData, name: e.target.value});
                          setErrors({...errors, name: null});
                        }}
                        className={`w-full pr-12 pl-4 py-3 bg-white/5 border rounded-xl focus:outline-none focus:ring-2 focus:ring-amber-500 focus:border-transparent text-white placeholder-gray-500 transition-all ${
                          errors.name ? 'border-red-500' : 'border-gray-700'
                        }`}
                        placeholder="أدخل اسمك الكامل"
                      />
                    </div>
                    {errors.name && (
                      <p className="text-red-500 text-sm mt-1">{errors.name}</p>
                    )}
                  </motion.div>

                  <motion.div variants={fadeInUp}>
                    <label className="block text-sm font-medium text-gray-300 mb-2">
                      البريد الإلكتروني <span className="text-red-500">*</span>
                    </label>
                    <div className="relative group">
                      <div className="absolute inset-y-0 right-0 pr-3 flex items-center pointer-events-none">
                        <Mail className={`w-5 h-5 ${
                          errors.email ? 'text-red-500' : 'text-gray-400 group-focus-within:text-amber-500'
                        }`} />
                      </div>
                      <input
                        type="email"
                        value={formData.email}
                        onChange={(e) => {
                          setFormData({...formData, email: e.target.value});
                          setErrors({...errors, email: null});
                        }}
                        className={`w-full pr-12 pl-4 py-3 bg-white/5 border rounded-xl focus:outline-none focus:ring-2 focus:ring-amber-500 focus:border-transparent text-white placeholder-gray-500 transition-all ${
                          errors.email ? 'border-red-500' : 'border-gray-700'
                        }`}
                        placeholder="أدخل بريدك الإلكتروني"
                      />
                    </div>
                    {errors.email && (
                      <p className="text-red-500 text-sm mt-1">{errors.email}</p>
                    )}
                  </motion.div>

                  <motion.div variants={fadeInUp}>
                    <label className="block text-sm font-medium text-gray-300 mb-2">
                      رقم الهاتف <span className="text-gray-500">(اختياري)</span>
                    </label>
                    <div className="relative group">
                      <div className="absolute inset-y-0 right-0 pr-3 flex items-center pointer-events-none">
                        <Phone className="w-5 h-5 text-gray-400 group-focus-within:text-amber-500" />
                      </div>
                      <input
                        type="tel"
                        value={formData.phone}
                        onChange={(e) => {
                          setFormData({...formData, phone: e.target.value});
                          setErrors({...errors, phone: null});
                        }}
                        className="w-full pr-12 pl-4 py-3 bg-white/5 border border-gray-700 rounded-xl focus:outline-none focus:ring-2 focus:ring-amber-500 focus:border-transparent text-white placeholder-gray-500 transition-all"
                        placeholder="أدخل رقم هاتفك (اختياري)"
                      />
                    </div>
                    {errors.phone && (
                      <p className="text-red-500 text-sm mt-1">{errors.phone}</p>
                    )}
                  </motion.div>

                  <motion.div variants={fadeInUp}>
                    <label className="block text-sm font-medium text-gray-300 mb-2">
                      رقم الواتساب <span className="text-red-500">*</span>
                    </label>
                    <div className="relative group">
                      <div className="absolute inset-y-0 right-0 pr-3 flex items-center pointer-events-none">
                        <MessageCircle className={`w-5 h-5 ${
                          errors.whatsapp ? 'text-red-500' : 'text-gray-400 group-focus-within:text-amber-500'
                        }`} />
                      </div>
                      <input
                        type="tel"
                        value={formData.whatsapp}
                        onChange={(e) => {
                          setFormData({...formData, whatsapp: e.target.value});
                          setErrors({...errors, whatsapp: null});
                        }}
                        className={`w-full pr-12 pl-4 py-3 bg-white/5 border rounded-xl focus:outline-none focus:ring-2 focus:ring-amber-500 focus:border-transparent text-white placeholder-gray-500 transition-all ${
                          errors.whatsapp ? 'border-red-500' : 'border-gray-700'
                        }`}
                        placeholder="أدخل رقم الواتساب"
                      />
                    </div>
                    {errors.whatsapp && (
                      <p className="text-red-500 text-sm mt-1">{errors.whatsapp}</p>
                    )}
                  </motion.div>

                  <motion.div variants={fadeInUp}>
                    <label className="block text-sm font-medium text-gray-300 mb-2">
                      كلمة المرور <span className="text-red-500">*</span>
                    </label>
                    <div className="relative group">
                      <div className="absolute inset-y-0 right-0 pr-3 flex items-center pointer-events-none">
                        <Lock className={`w-5 h-5 ${
                          errors.password ? 'text-red-500' : 'text-gray-400 group-focus-within:text-amber-500'
                        }`} />
                      </div>
                      <input
                        type={showPassword ? "text" : "password"}
                        value={formData.password}
                        onChange={(e) => {
                          setFormData({...formData, password: e.target.value});
                          setErrors({...errors, password: null});
                        }}
                        className={`w-full pr-12 pl-12 py-3 bg-white/5 border rounded-xl focus:outline-none focus:ring-2 focus:ring-amber-500 focus:border-transparent text-white placeholder-gray-500 transition-all ${
                          errors.password ? 'border-red-500' : 'border-gray-700'
                        }`}
                        placeholder="أدخل كلمة المرور"
                      />
                      <button
                        type="button"
                        onClick={() => setShowPassword(!showPassword)}
                        className="absolute inset-y-0 left-0 pl-3 flex items-center"
                      >
                        {showPassword ? (
                          <EyeOff className="w-5 h-5 text-gray-400 hover:text-gray-300" />
                        ) : (
                          <Eye className="w-5 h-5 text-gray-400 hover:text-gray-300" />
                        )}
                      </button>
                    </div>
                    {errors.password && (
                      <p className="text-red-500 text-sm mt-1">{errors.password}</p>
                    )}
                  </motion.div>

                  <motion.div variants={fadeInUp}>
                    <label className="block text-sm font-medium text-gray-300 mb-2">
                      تأكيد كلمة المرور <span className="text-red-500">*</span>
                    </label>
                    <div className="relative group">
                      <div className="absolute inset-y-0 right-0 pr-3 flex items-center pointer-events-none">
                        <Lock className={`w-5 h-5 ${
                          errors.confirmPassword ? 'text-red-500' : 'text-gray-400 group-focus-within:text-amber-500'
                        }`} />
                      </div>
                      <input
                        type={showConfirmPassword ? "text" : "password"}
                        value={formData.confirmPassword}
                        onChange={(e) => {
                          setFormData({...formData, confirmPassword: e.target.value});
                          setErrors({...errors, confirmPassword: null});
                        }}
                        className={`w-full pr-12 pl-12 py-3 bg-white/5 border rounded-xl focus:outline-none focus:ring-2 focus:ring-amber-500 focus:border-transparent text-white placeholder-gray-500 transition-all ${
                          errors.confirmPassword ? 'border-red-500' : 'border-gray-700'
                        }`}
                        placeholder="أعد إدخال كلمة المرور"
                      />
                      <button
                        type="button"
                        onClick={() => setShowConfirmPassword(!showConfirmPassword)}
                        className="absolute inset-y-0 left-0 pl-3 flex items-center"
                      >
                        {showConfirmPassword ? (
                          <EyeOff className="w-5 h-5 text-gray-400 hover:text-gray-300" />
                        ) : (
                          <Eye className="w-5 h-5 text-gray-400 hover:text-gray-300" />
                        )}
                      </button>
                      {formData.confirmPassword && (
                        <div className="absolute inset-y-0 left-12 flex items-center">
                          {formData.password === formData.confirmPassword ? (
                            <CheckCircle className="w-5 h-5 text-green-500" />
                          ) : (
                            <XCircle className="w-5 h-5 text-red-500" />
                          )}
                        </div>
                      )}
                    </div>
                    {errors.confirmPassword && (
                      <p className="text-red-500 text-sm mt-1">{errors.confirmPassword}</p>
                    )}
                  </motion.div>
                </>
              ) : (
                <>
                  <motion.div variants={fadeInUp}>
                    <label className="block text-sm font-medium text-gray-300 mb-2">
                      صورة الهوية - الوجه الأمامي <span className="text-red-500">*</span>
                    </label>
                    <div
                      onClick={() => fileInputFrontRef.current?.click()}
                      className={`relative border-2 border-dashed rounded-xl p-6 text-center cursor-pointer transition-all ${
                        idImagePreviews.front
                          ? 'border-green-500 bg-green-500/10'
                          : errors.front
                          ? 'border-red-500 bg-red-500/10'
                          : 'border-gray-700 hover:border-amber-500 hover:bg-white/5'
                      }`}
                    >
                      <input
                        ref={fileInputFrontRef}
                        type="file"
                        accept="image/*"
                        onChange={(e) => handleImageUpload('front', e.target.files?.[0])}
                        className="hidden"
                      />
                      
                      {idImagePreviews.front ? (
                        <div className="relative">
                          <Image
                            src={idImagePreviews.front}
                            alt="Front ID"
                            width={200}
                            height={120}
                            className="mx-auto rounded-lg object-cover"
                          />
                          <button
                            onClick={(e) => {
                              e.stopPropagation();
                              setIdImages(prev => ({...prev, front: null}));
                              setIdImagePreviews(prev => ({...prev, front: ''}));
                            }}
                            className="absolute -top-2 -right-2 w-6 h-6 bg-red-500 rounded-full flex items-center justify-center hover:bg-red-600"
                          >
                            <X className="w-4 h-4 text-white" />
                          </button>
                        </div>
                      ) : (
                        <>
                          <Camera className="w-12 h-12 text-gray-500 mx-auto mb-3" />
                          <p className="text-gray-400">اضغط لرفع الصورة</p>
                          <p className="text-xs text-gray-500 mt-2">
                            JPEG, PNG, JPG • حتى 5MB • 800x600 بكسل
                          </p>
                        </>
                      )}
                    </div>
                    {errors.front && (
                      <p className="text-red-500 text-sm mt-1">{errors.front}</p>
                    )}
                  </motion.div>

                  <motion.div variants={fadeInUp}>
                    <label className="block text-sm font-medium text-gray-300 mb-2">
                      صورة الهوية - الوجه الخلفي <span className="text-red-500">*</span>
                    </label>
                    <div
                      onClick={() => fileInputBackRef.current?.click()}
                      className={`relative border-2 border-dashed rounded-xl p-6 text-center cursor-pointer transition-all ${
                        idImagePreviews.back
                          ? 'border-green-500 bg-green-500/10'
                          : errors.back
                          ? 'border-red-500 bg-red-500/10'
                          : 'border-gray-700 hover:border-amber-500 hover:bg-white/5'
                      }`}
                    >
                      <input
                        ref={fileInputBackRef}
                        type="file"
                        accept="image/*"
                        onChange={(e) => handleImageUpload('back', e.target.files?.[0])}
                        className="hidden"
                      />
                      
                      {idImagePreviews.back ? (
                        <div className="relative">
                          <Image
                            src={idImagePreviews.back}
                            alt="Back ID"
                            width={200}
                            height={120}
                            className="mx-auto rounded-lg object-cover"
                          />
                          <button
                            onClick={(e) => {
                              e.stopPropagation();
                              setIdImages(prev => ({...prev, back: null}));
                              setIdImagePreviews(prev => ({...prev, back: ''}));
                            }}
                            className="absolute -top-2 -right-2 w-6 h-6 bg-red-500 rounded-full flex items-center justify-center hover:bg-red-600"
                          >
                            <X className="w-4 h-4 text-white" />
                          </button>
                        </div>
                      ) : (
                        <>
                          <Camera className="w-12 h-12 text-gray-500 mx-auto mb-3" />
                          <p className="text-gray-400">اضغط لرفع الصورة</p>
                          <p className="text-xs text-gray-500 mt-2">
                            JPEG, PNG, JPG • حتى 5MB • 800x600 بكسل
                          </p>
                        </>
                      )}
                    </div>
                    {errors.back && (
                      <p className="text-red-500 text-sm mt-1">{errors.back}</p>
                    )}
                  </motion.div>

                  <motion.div variants={fadeInUp} className="flex items-center gap-2">
                    <input
                      type="checkbox"
                      id="terms"
                      checked={formData.agreeTerms}
                      onChange={(e) => setFormData({...formData, agreeTerms: e.target.checked})}
                      className="w-4 h-4 rounded border-gray-600 bg-white/5 text-amber-500 focus:ring-amber-500 focus:ring-offset-0"
                      required
                    />
                    <label htmlFor="terms" className="text-sm text-gray-300">
                      أوافق على{' '}
                      <Link href="/terms" className="text-amber-400 hover:text-amber-300">
                        شروط الاستخدام
                      </Link>
                      {' '}و{' '}
                      <Link href="/privacy" className="text-amber-400 hover:text-amber-300">
                        سياسة الخصوصية
                      </Link>
                    </label>
                  </motion.div>
                </>
              )}

              <motion.div variants={fadeInUp} className="flex gap-3 pt-4">
                {step === 1 ? (
                  <>
                    <button
                      type="button"
                      onClick={() => router.push('/auth/choose-role')}
                      className="flex-1 py-3 px-4 bg-white/5 border border-gray-700 rounded-xl text-gray-300 hover:bg-white/10 transition-colors"
                    >
                      إلغاء
                    </button>
                    <button
                      type="button"
                      onClick={handleNextStep}
                      className="flex-1 bg-gradient-to-r from-amber-500 to-amber-600 text-white py-3 px-4 rounded-xl font-medium hover:from-amber-600 hover:to-amber-700 transition-all"
                    >
                      التالي
                    </button>
                  </>
                ) : (
                  <>
                    <button
                      type="button"
                      onClick={() => setStep(1)}
                      className="flex-1 py-3 px-4 bg-white/5 border border-gray-700 rounded-xl text-gray-300 hover:bg-white/10 transition-colors"
                    >
                      السابق
                    </button>
                    <button
                      type="submit"
                      disabled={isLoading || !formData.agreeTerms}
                      className="flex-1 bg-gradient-to-r from-amber-500 to-amber-600 text-white py-3 px-4 rounded-xl font-medium hover:from-amber-600 hover:to-amber-700 transition-all disabled:opacity-50 disabled:cursor-not-allowed"
                    >
                      {isLoading ? (
                        <div className="flex items-center justify-center gap-2">
                          <Loader2 className="w-5 h-5 animate-spin" />
                          <span>جاري التسجيل...</span>
                        </div>
                      ) : (
                        'إنشاء حساب'
                      )}
                    </button>
                  </>
                )}
              </motion.div>
            </motion.form>
          </div>
        </motion.div>
      </motion.div>
    </div>
  );
}