import React, { useMemo } from 'react';
import { FeedSackLogEntry, FeedSackColumnConfig } from '../../types/counting.ts';
import { formatNumber } from '../../utils/formatters.ts';
import { getEffectiveDate } from '../../utils/dateFilter.ts';

interface FeedSaldoCardProps {
  iotData: FeedSackLogEntry[];
  columnConfig: FeedSackColumnConfig[];
  startDate: Date;
  saldoAwal?: number;
  effectiveDate?: Date;
}

const FeedSaldoCard: React.FC<FeedSaldoCardProps> = ({
  iotData,
  columnConfig,
  startDate,
  saldoAwal = 0,
  effectiveDate,
}) => {
  const displayDate = effectiveDate ?? getEffectiveDate();

  const saldoData = useMemo(() => {
    const inboundCameras = columnConfig
      .filter((c) => c.type === 'inbound')
      .map((c) => c.cameraName);
    const usageCameras = columnConfig.filter((c) => c.type === 'usage').map((c) => c.cameraName);
    const outboundCameras = columnConfig
      .filter((c) => c.type === 'outbound')
      .map((c) => c.cameraName);

    // Date filtering: from startDate to today
    const filterStartDate = new Date(startDate);
    filterStartDate.setHours(0, 0, 0, 0);

    const today = new Date(displayDate);
    today.setHours(23, 59, 59, 999);

    // Calculate IOT saldo (cumulative)
    const inbound = iotData
      .filter(
        (log) =>
          inboundCameras.includes(log.cameraName) &&
          log.timestamp >= filterStartDate &&
          log.timestamp <= today
      )
      .reduce((sum, log) => sum + log.count, 0);

    const usage = iotData
      .filter(
        (log) =>
          usageCameras.includes(log.cameraName) &&
          log.timestamp >= filterStartDate &&
          log.timestamp <= today
      )
      .reduce((sum, log) => sum + log.count, 0);

    const outbound = iotData
      .filter(
        (log) =>
          outboundCameras.includes(log.cameraName) &&
          log.timestamp >= filterStartDate &&
          log.timestamp <= today
      )
      .reduce((sum, log) => sum + log.count, 0);

    const saldo = saldoAwal + inbound - usage - outbound;

    return { inbound, usage, outbound, saldo, saldoAwal };
  }, [iotData, columnConfig, startDate, saldoAwal, displayDate]);

  const formatTodayLabel = () =>
    new Intl.DateTimeFormat('id-ID', {
      day: 'numeric',
      month: 'long',
      year: 'numeric',
      timeZone: 'Asia/Jakarta',
    }).format(displayDate);

  const formatDateRange = () => {
    const start = startDate.toLocaleDateString('id-ID', {
      day: 'numeric',
      month: 'short',
      year: 'numeric',
    });
    return `${start} - ${formatTodayLabel()}`;
  };

  const getSaldoStatusColor = (saldo: number) => {
    if (saldo > 0) return 'text-green-600';
    if (saldo < 0) return 'text-red-600';
    return 'text-gray-600';
  };

  return (
    <div className="bg-gradient-to-br from-blue-50 to-indigo-50 p-6 rounded-xl shadow-sm border-2 border-blue-200">
      <div className="flex items-center justify-between mb-4">
        <div className="flex items-center gap-3">
          <div className="bg-blue-500 text-white p-3 rounded-lg">
            <i className="fa-solid fa-scale-balanced text-2xl"></i>
          </div>
          <div>
            <h2 className="text-xl font-bold text-gray-800">Saldo Karung Pakan</h2>
            <p className="text-sm text-gray-600">{formatDateRange()}</p>
          </div>
        </div>
      </div>

      {/* Saldo Display */}
      <div className="bg-white rounded-lg p-6 border border-blue-200">
        <div className="grid grid-cols-5 gap-6">
          {/* Saldo Awal */}
          <div className="text-center">
            <div className="flex items-center justify-center gap-2 mb-2">
              <i className="fa-solid fa-box-archive text-blue-600"></i>
              <p className="text-sm font-semibold text-gray-700">Saldo Awal</p>
            </div>
            <p className="text-3xl font-bold text-blue-600">{formatNumber(saldoData.saldoAwal)}</p>
            <p className="text-xs text-gray-400 mt-1">karung</p>
          </div>

          {/* Karung Masuk */}
          <div className="text-center">
            <div className="flex items-center justify-center gap-2 mb-2">
              <i className="fa-solid fa-arrow-down text-green-600"></i>
              <p className="text-sm font-semibold text-gray-700">Karung Masuk</p>
            </div>
            <p className="text-3xl font-bold text-green-600">{formatNumber(saldoData.inbound)}</p>
            <p className="text-xs text-gray-400 mt-1">karung</p>
          </div>

          {/* Karung Dituang */}
          <div className="text-center">
            <div className="flex items-center justify-center gap-2 mb-2">
              <i className="fa-solid fa-arrow-up text-orange-600"></i>
              <p className="text-sm font-semibold text-gray-700">Karung Dituang</p>
            </div>
            <p className="text-3xl font-bold text-orange-600">{formatNumber(saldoData.usage)}</p>
            <p className="text-xs text-gray-400 mt-1">karung</p>
          </div>

          {/* Karung Keluar */}
          <div className="text-center">
            <div className="flex items-center justify-center gap-2 mb-2">
              <i className="fa-solid fa-arrow-right text-red-600"></i>
              <p className="text-sm font-semibold text-gray-700">Karung Keluar</p>
            </div>
            <p className="text-3xl font-bold text-red-600">{formatNumber(saldoData.outbound)}</p>
            <p className="text-xs text-gray-400 mt-1">karung</p>
          </div>

          {/* Saldo */}
          <div className="text-center border-l-2 border-blue-200 pl-6">
            <div className="flex items-center justify-center gap-2 mb-2">
              <i className="fa-solid fa-scale-balanced text-blue-600"></i>
              <p className="text-sm font-semibold text-gray-700">Saldo</p>
            </div>
            <p className={`text-4xl font-bold ${getSaldoStatusColor(saldoData.saldo)}`}>
              {formatNumber(saldoData.saldo)}
            </p>
            <p className="text-xs text-gray-400 mt-1">karung</p>
          </div>
        </div>
      </div>

      {/* Warning for negative saldo */}
      {saldoData.saldo < 0 && (
        <div className="mt-4 bg-yellow-50 border border-yellow-200 rounded-lg p-3 flex items-start gap-2">
          <i className="fa-solid fa-triangle-exclamation text-yellow-600 mt-0.5"></i>
          <p className="text-xs text-yellow-800">
            <strong>Peringatan:</strong> Saldo negatif menunjukkan karung dituang dan keluar lebih
            banyak dari karung masuk. Periksa kembali data atau konfigurasi kolom.
          </p>
        </div>
      )}
    </div>
  );
};

export default FeedSaldoCard;