"use client";
import React, { useState } from "react";
import { motion, AnimatePresence } from "motion/react";
import { X, CreditCard, Sparkles, CheckCircle2, TrendingUp, DollarSign } from "lucide-react";
import { toPersian, cn } from "../lib/utils";
import { toast } from "sonner";

interface TopUpModalProps {
  isOpen: boolean;
  onClose: () => void;
  onConfirm: (amount: number) => void;
}

const PRESET_AMOUNTS = [
  { label: "۵۰۰,۰۰۰ تومان", value: 500000 },
  { label: "۱,۰۰۰,۰۰۰ تومان", value: 1000000 },
  { label: "۲,۰۰۰,۰۰۰ تومان", value: 2000000 },
];

export default function TopUpModal({ isOpen, onClose, onConfirm }: TopUpModalProps) {
  const [amount, setAmount] = useState<string>("");
  const [selectedPreset, setSelectedPreset] = useState<number | null>(null);
  const [loading, setLoading] = useState(false);

  const handlePresetSelect = (val: number) => {
    setSelectedPreset(val);
    setAmount(val.toString());
  };

  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    const val = e.target.value.replace(/,/g, '');
    if (/^\d*$/.test(val)) {
      setAmount(val);
      setSelectedPreset(null);
    }
  };

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    const finalAmount = parseInt(amount);
    if (isNaN(finalAmount) || finalAmount < 10000) {
      toast.error("حداقل مبلغ شارژ ۱۰,۰۰۰ تومان است");
      return;
    }

    setLoading(true);
    // Simulate gateway connection
    setTimeout(() => {
      onConfirm(finalAmount);
      toast.success(`مبلغ ${toPersian(finalAmount.toLocaleString())} تومان به کیف پول شما اضافه شد.`);
      setLoading(false);
      onClose();
      setAmount("");
      setSelectedPreset(null);
    }, 2000);
  };

  return (
    <AnimatePresence>
      {isOpen && (
        <div className="fixed inset-0 z-[110] flex items-center justify-center p-4">
          <motion.div 
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            exit={{ opacity: 0 }}
            onClick={onClose}
            className="absolute inset-0 bg-medical-gray-900/60 backdrop-blur-md"
          />
          <motion.div 
            initial={{ opacity: 0, scale: 0.9, y: 20 }}
            animate={{ opacity: 1, scale: 1, y: 0 }}
            exit={{ opacity: 0, scale: 0.9, y: 20 }}
            className="bg-white w-full max-w-md rounded-[3rem] relative z-10 shadow-2xl overflow-hidden font-vazir text-right"
            dir="rtl"
          >
            <div className="bg-medical-gray-50 px-8 py-6 border-b border-medical-gray-100 flex items-center justify-between">
              <div className="flex items-center gap-3">
                <div className="w-10 h-10 bg-canino-blue rounded-xl flex items-center justify-center text-white">
                  <TrendingUp className="w-5 h-5" />
                </div>
                <h3 className="text-xl font-black text-medical-gray-900 italic">شارژ سریع کیف پول</h3>
              </div>
              <button 
                onClick={onClose}
                className="w-10 h-10 flex items-center justify-center rounded-xl bg-white border border-medical-gray-200 text-medical-gray-400 hover:text-red-500 transition-all"
              >
                <X className="w-5 h-5" />
              </button>
            </div>

            <form onSubmit={handleSubmit} className="p-8 space-y-8">
              <div className="space-y-4">
                <label className="text-[10px] font-black text-medical-gray-400 uppercase tracking-widest block pr-2">یکی از مبالغ پیشنهادی را انتخاب کنید</label>
                <div className="flex flex-wrap gap-2">
                  {PRESET_AMOUNTS.map((preset) => (
                    <button
                      key={preset.value}
                      type="button"
                      onClick={() => handlePresetSelect(preset.value)}
                      className={cn(
                        "px-6 py-3 rounded-2xl text-sm font-black transition-all border",
                        selectedPreset === preset.value 
                          ? "bg-canino-blue text-white border-canino-blue shadow-lg shadow-canino-blue/20" 
                          : "bg-white text-medical-gray-700 border-medical-gray-100 hover:border-canino-blue"
                      )}
                    >
                      {preset.label}
                    </button>
                  ))}
                </div>
              </div>

              <div className="space-y-4">
                <label className="text-[10px] font-black text-medical-gray-400 uppercase tracking-widest block pr-2">یا مبلغ دلخواه خود را وارد کنید (تومان)</label>
                <div className="relative">
                  <input
                    autoFocus
                    type="text"
                    value={amount ? parseInt(amount).toLocaleString() : ""}
                    onChange={handleInputChange}
                    className="w-full bg-medical-gray-50 border border-medical-gray-100 rounded-3xl py-6 px-8 outline-none font-black text-2xl text-center text-medical-gray-900 transition-all focus:ring-4 focus:ring-canino-blue/10 focus:border-canino-blue italic"
                    placeholder="۰"
                  />
                  {amount && (
                    <div className="absolute left-6 top-1/2 -translate-y-1/2 text-xs font-bold text-medical-gray-400">تومان</div>
                  )}
                </div>
              </div>

              <div className="bg-blue-50 border border-blue-100 rounded-2xl p-4 flex gap-3">
                 <Sparkles className="w-5 h-5 text-canino-blue shrink-0" />
                 <p className="text-[10px] font-bold text-canino-blue leading-relaxed">با شارژ کیف پول، از هدیه‌های هوشمند کانی‌نو و اولویت در ارسال سفارش‌ها بهره‌مند شوید.</p>
              </div>

              <button
                type="submit"
                disabled={loading || !amount}
                className="w-full py-5 bg-medical-gray-900 text-white rounded-[2rem] font-black text-lg flex items-center justify-center gap-3 hover:bg-canino-blue transition-all shadow-xl shadow-black/10 disabled:opacity-50 disabled:cursor-not-allowed group"
              >
                {loading ? (
                  <div className="w-6 h-6 border-4 border-white/20 border-t-white rounded-full animate-spin" />
                ) : (
                  <>
                    <CreditCard className="w-6 h-6 group-hover:scale-110 transition-transform" />
                    اتصال به درگاه بانکی
                  </>
                )}
              </button>
            </form>
          </motion.div>
        </div>
      )}
    </AnimatePresence>
  );
}