import { ResourceUsage } from '../../lib/vertical-farming/types';

interface ResourceUsageChartProps {
  usage: ResourceUsage;
  showBenchmarks?: boolean;
}

export default function ResourceUsageChart({ usage, showBenchmarks = true }: ResourceUsageChartProps) {
  const formatCurrency = (value: number) =>
    new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' }).format(value);

  const efficiencyColor = usage.efficiencyVsBenchmark >= 100
    ? 'text-green-600'
    : usage.efficiencyVsBenchmark >= 80
    ? 'text-yellow-600'
    : 'text-red-600';

  return (
    <div className="space-y-6">
      {/* Summary Stats */}
      <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
        <div className="bg-blue-50 rounded-lg p-4">
          <p className="text-sm text-blue-700">Electricity</p>
          <p className="text-2xl font-bold text-blue-900">{usage.electricityKwh.toLocaleString()} kWh</p>
          <p className="text-sm text-blue-600">{formatCurrency(usage.electricityCostUsd)}</p>
        </div>
        <div className="bg-cyan-50 rounded-lg p-4">
          <p className="text-sm text-cyan-700">Water</p>
          <p className="text-2xl font-bold text-cyan-900">{usage.waterUsageL.toLocaleString()} L</p>
          <p className="text-sm text-cyan-600">{formatCurrency(usage.waterCostUsd)}</p>
        </div>
        <div className="bg-green-50 rounded-lg p-4">
          <p className="text-sm text-green-700">CO2</p>
          <p className="text-2xl font-bold text-green-900">{usage.co2UsedKg.toFixed(1)} kg</p>
          <p className="text-sm text-green-600">{formatCurrency(usage.co2CostUsd)}</p>
        </div>
        <div className="bg-purple-50 rounded-lg p-4">
          <p className="text-sm text-purple-700">Nutrients</p>
          <p className="text-2xl font-bold text-purple-900">{usage.nutrientsUsedL.toFixed(1)} L</p>
          <p className="text-sm text-purple-600">{formatCurrency(usage.nutrientCostUsd)}</p>
        </div>
      </div>

      {/* Efficiency Metrics */}
      <div className="bg-white rounded-lg shadow p-6">
        <h4 className="font-semibold text-gray-900 mb-4">Efficiency Per kg Produce</h4>
        <div className="grid grid-cols-3 gap-4">
          <div className="text-center">
            <p className="text-3xl font-bold text-blue-600">{usage.kwhPerKgProduce.toFixed(1)}</p>
            <p className="text-sm text-gray-600">kWh/kg</p>
            {showBenchmarks && (
              <p className="text-xs text-gray-500">
                Industry: {usage.industryBenchmarkKwhPerKg} kWh/kg
              </p>
            )}
          </div>
          <div className="text-center">
            <p className="text-3xl font-bold text-cyan-600">{usage.litersPerKgProduce.toFixed(1)}</p>
            <p className="text-sm text-gray-600">L/kg</p>
            {showBenchmarks && (
              <p className="text-xs text-gray-500">
                Industry: {usage.industryBenchmarkLitersPerKg} L/kg
              </p>
            )}
          </div>
          <div className="text-center">
            <p className="text-3xl font-bold text-green-600">{formatCurrency(usage.costPerKgProduce)}</p>
            <p className="text-sm text-gray-600">$/kg</p>
          </div>
        </div>
      </div>

      {/* Renewable & Recycled */}
      <div className="grid grid-cols-2 gap-4">
        <div className="bg-white rounded-lg shadow p-4">
          <div className="flex justify-between items-center mb-2">
            <span className="text-sm text-gray-600">Renewable Energy</span>
            <span className="font-semibold text-green-600">{usage.renewablePercent}%</span>
          </div>
          <div className="w-full bg-gray-200 rounded-full h-3">
            <div
              className="bg-green-500 h-3 rounded-full"
              style={{ width: `${usage.renewablePercent}%` }}
            />
          </div>
        </div>
        <div className="bg-white rounded-lg shadow p-4">
          <div className="flex justify-between items-center mb-2">
            <span className="text-sm text-gray-600">Water Recycled</span>
            <span className="font-semibold text-cyan-600">{usage.waterRecycledPercent}%</span>
          </div>
          <div className="w-full bg-gray-200 rounded-full h-3">
            <div
              className="bg-cyan-500 h-3 rounded-full"
              style={{ width: `${usage.waterRecycledPercent}%` }}
            />
          </div>
        </div>
      </div>

      {/* Overall Efficiency */}
      {showBenchmarks && (
        <div className="bg-gray-50 rounded-lg p-4 text-center">
          <p className="text-sm text-gray-600 mb-2">Overall Efficiency vs Industry Benchmark</p>
          <p className={`text-4xl font-bold ${efficiencyColor}`}>
            {usage.efficiencyVsBenchmark.toFixed(0)}%
          </p>
          <p className="text-sm text-gray-500 mt-1">
            {usage.efficiencyVsBenchmark >= 100
              ? 'Outperforming industry average'
              : usage.efficiencyVsBenchmark >= 80
              ? 'Near industry average'
              : 'Below industry average - optimization needed'}
          </p>
        </div>
      )}

      {/* Period Info */}
      <p className="text-xs text-gray-500 text-center">
        Period: {new Date(usage.periodStart).toLocaleDateString()} - {new Date(usage.periodEnd).toLocaleDateString()}
      </p>
    </div>
  );
}