import React, { useState, useEffect } from "react";
import { X, Percent } from "lucide-react";

interface DiscountOrderModalProps {
  isOpen: boolean;
  onClose: () => void;
  onConfirm: (discountValue: number, discountPercent: number) => void;
  orderValue: number;
  profit?: number;
  netProfit?: number;
  isManager?: boolean;
}

const DiscountOrderModal: React.FC<DiscountOrderModalProps> = ({
  isOpen,
  onClose,
  onConfirm,
  orderValue,
  profit = 0,
  netProfit = 0,
  isManager = false,
}) => {
  const [discountPercent, setDiscountPercent] = useState<string>("0");
  const [discountValue, setDiscountValue] = useState<string>("0");

  useEffect(() => {
    if (!isOpen) {
      setDiscountPercent("0");
      setDiscountValue("0");
    }
  }, [isOpen]);

  const formatCurrency = (value: number) => {
    return new Intl.NumberFormat("pt-BR", {
      style: "currency",
      currency: "BRL",
    }).format(value);
  };

  const formatPercent = (value: number) => {
    return new Intl.NumberFormat("pt-BR", {
      minimumFractionDigits: 2,
      maximumFractionDigits: 2,
    }).format(value);
  };

  const handlePercentChange = (value: string) => {
    const numValue = parseFloat(value.replace(/[^\d,.-]/g, "").replace(",", ".")) || 0;
    setDiscountPercent(formatPercent(numValue));
    
    if (orderValue > 0) {
      const discount = (orderValue * numValue) / 100;
      setDiscountValue(formatCurrency(discount));
    }
  };

  const handleValueChange = (value: string) => {
    const numValue = parseFloat(value.replace(/[^\d,.-]/g, "").replace(",", ".")) || 0;
    setDiscountValue(formatCurrency(numValue));
    
    if (orderValue > 0) {
      const percent = (numValue / orderValue) * 100;
      setDiscountPercent(formatPercent(percent));
    }
  };

  const handleConfirm = () => {
    const discountValueNum = parseFloat(
      discountValue.replace(/[^\d,.-]/g, "").replace(",", ".")
    ) || 0;
    const discountPercentNum = parseFloat(
      discountPercent.replace(/[^\d,.-]/g, "").replace(",", ".")
    ) || 0;
    
    onConfirm(discountValueNum, discountPercentNum);
    onClose();
  };

  const netValue = orderValue - (parseFloat(discountValue.replace(/[^\d,.-]/g, "").replace(",", ".")) || 0);
  const calculatedNetProfit = orderValue > 0 && netValue > 0
    ? (((netValue - profit) / netValue) * 100).toFixed(2)
    : "0.00";

  if (!isOpen) return null;

  return (
    <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50 backdrop-blur-sm">
      <div className="bg-white rounded-3xl shadow-2xl w-full max-w-2xl max-h-[90vh] flex flex-col overflow-hidden">
        {/* Header */}
        <div className="p-6 bg-[#002147] text-white rounded-t-3xl relative overflow-hidden flex-shrink-0">
          <div className="relative z-10 flex items-center justify-between">
            <div className="flex items-center gap-3">
              <div className="w-12 h-12 bg-orange-500/20 rounded-2xl flex items-center justify-center">
                <Percent className="w-6 h-6 text-orange-400" />
              </div>
              <div>
                <h3 className="text-xl font-black">Pedido de venda</h3>
                <p className="text-xs text-orange-400 font-bold uppercase tracking-wider mt-0.5">
                  Conceder desconto sobre o pedido
                </p>
              </div>
            </div>
            <button
              onClick={onClose}
              className="w-10 h-10 flex items-center justify-center rounded-xl hover:bg-white/10 transition-colors"
            >
              <X className="w-5 h-5" />
            </button>
          </div>
          <div className="absolute right-[-10%] top-[-10%] w-32 h-32 bg-orange-400/10 rounded-full blur-2xl"></div>
        </div>

        {/* Content */}
        <div className="flex-1 overflow-auto p-6">
          <form className="space-y-4">
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
              {/* Valor do pedido */}
              <div>
                <label className="block text-xs font-black uppercase text-slate-600 tracking-wider mb-2">
                  Valor do pedido
                </label>
                <input
                  type="text"
                  value={formatCurrency(orderValue)}
                  disabled
                  className="w-full bg-slate-50 border-2 border-slate-200 rounded-xl px-4 py-3 font-black text-slate-700 outline-none"
                />
              </div>

              {/* % Margem (apenas para gerente) */}
              {isManager && (
                <div>
                  <label className="block text-xs font-black uppercase text-slate-600 tracking-wider mb-2">
                    % Margem
                  </label>
                  <input
                    type="text"
                    value={formatPercent(profit)}
                    disabled
                    className="w-full bg-slate-50 border-2 border-slate-200 rounded-xl px-4 py-3 font-black text-slate-700 outline-none"
                  />
                </div>
              )}

              {/* Percentual de desconto */}
              <div>
                <label className="block text-xs font-black uppercase text-slate-600 tracking-wider mb-2">
                  Percentual de desconto
                </label>
                <input
                  type="text"
                  value={discountPercent}
                  onChange={(e) => handlePercentChange(e.target.value)}
                  className="w-full bg-white border-2 border-slate-200 rounded-xl px-4 py-3 font-black text-slate-700 outline-none focus:border-orange-500 transition-all"
                  placeholder="0,00"
                />
              </div>

              {/* Valor de desconto */}
              <div>
                <label className="block text-xs font-black uppercase text-slate-600 tracking-wider mb-2">
                  Valor de desconto
                </label>
                <input
                  type="text"
                  value={discountValue}
                  onChange={(e) => handleValueChange(e.target.value)}
                  className="w-full bg-white border-2 border-slate-200 rounded-xl px-4 py-3 font-black text-slate-700 outline-none focus:border-orange-500 transition-all"
                  placeholder="R$ 0,00"
                />
              </div>

              {/* Valor líquido */}
              <div>
                <label className="block text-xs font-black uppercase text-slate-600 tracking-wider mb-2">
                  Valor líquido
                </label>
                <input
                  type="text"
                  value={formatCurrency(netValue)}
                  disabled
                  className="w-full bg-slate-50 border-2 border-slate-200 rounded-xl px-4 py-3 font-black text-slate-700 outline-none"
                />
              </div>

              {/* % Margem Líquida (apenas para gerente) */}
              {isManager && (
                <div>
                  <label className="block text-xs font-black uppercase text-slate-600 tracking-wider mb-2">
                    % Margem Líquida
                  </label>
                  <input
                    type="text"
                    value={`${calculatedNetProfit}%`}
                    disabled
                    className="w-full bg-slate-50 border-2 border-slate-200 rounded-xl px-4 py-3 font-black text-slate-700 outline-none"
                  />
                </div>
              )}
            </div>
          </form>
        </div>

        {/* Footer */}
        <div className="p-6 border-t border-slate-200 flex-shrink-0 flex items-center justify-end gap-3">
          <button
            onClick={onClose}
            className="px-6 py-3 rounded-xl font-bold text-slate-700 hover:bg-slate-100 transition-colors"
          >
            Cancelar
          </button>
          <button
            onClick={handleConfirm}
            className="px-6 py-3 rounded-xl font-black bg-[#002147] text-white hover:bg-[#001a36] transition-all shadow-lg shadow-[#002147]/20 active:scale-95"
          >
            Aplicar
          </button>
        </div>
      </div>
    </div>
  );
};

export default DiscountOrderModal;