ATLAS/frontend/src/components/charts/FuelGauge.tsx

import clsx from 'clsx'

interface FuelGaugeProps {
  value: number // 0-100
  maxValue?: number
  label?: string
  size?: 'sm' | 'md' | 'lg'
  showPercentage?: boolean
  className?: string
}

export default function FuelGauge({
  value,
  maxValue = 100,
  label = 'Combustible',
  size = 'md',
  showPercentage = true,
  className,
}: FuelGaugeProps) {
  const percentage = Math.min(100, Math.max(0, (value / maxValue) * 100))

  // Color based on level
  const getColor = () => {
    if (percentage <= 20) return { bg: 'bg-error-500', text: 'text-error-400' }
    if (percentage <= 40) return { bg: 'bg-warning-500', text: 'text-warning-400' }
    return { bg: 'bg-success-500', text: 'text-success-400' }
  }

  const colors = getColor()

  const sizeStyles = {
    sm: { height: 'h-2', text: 'text-xs', icon: 'w-4 h-4' },
    md: { height: 'h-3', text: 'text-sm', icon: 'w-5 h-5' },
    lg: { height: 'h-4', text: 'text-base', icon: 'w-6 h-6' },
  }

  const styles = sizeStyles[size]

  return (
    <div className={clsx('space-y-2', className)}>
      {/* Header */}
      <div className="flex items-center justify-between">
        <div className="flex items-center gap-2">
          <svg
            className={clsx(styles.icon, colors.text)}
            viewBox="0 0 24 24"
            fill="none"
            stroke="currentColor"
            strokeWidth="2"
          >
            <path
              strokeLinecap="round"
              strokeLinejoin="round"
              d="M3 7.5L7.5 3m0 0L12 7.5M7.5 3v13.5m13.5 0L16.5 21m0 0L12 16.5m4.5 4.5V7.5"
            />
          </svg>
          <span className={clsx(styles.text, 'text-slate-400')}>{label}</span>
        </div>
        {showPercentage && (
          <span className={clsx(styles.text, 'font-bold', colors.text)}>
            {percentage.toFixed(0)}%
          </span>
        )}
      </div>

      {/* Gauge bar */}
      <div className={clsx('w-full bg-slate-700 rounded-full overflow-hidden', styles.height)}>
        <div
          className={clsx(
            'h-full rounded-full transition-all duration-500',
            colors.bg
          )}
          style={{ width: `${percentage}%` }}
        />
      </div>

      {/* Markers */}
      <div className="flex justify-between text-xs text-slate-600">
        <span>E</span>
        <span>1/4</span>
        <span>1/2</span>
        <span>3/4</span>
        <span>F</span>
      </div>
    </div>
  )
}

// Circular gauge variant
interface CircularGaugeProps {
  value: number
  maxValue?: number
  label?: string
  size?: number
  strokeWidth?: number
  className?: string
}

export function CircularGauge({
  value,
  maxValue = 100,
  label,
  size = 120,
  strokeWidth = 8,
  className,
}: CircularGaugeProps) {
  const percentage = Math.min(100, Math.max(0, (value / maxValue) * 100))
  const radius = (size - strokeWidth) / 2
  const circumference = 2 * Math.PI * radius
  const strokeDashoffset = circumference - (percentage / 100) * circumference

  // Color based on level
  const getColor = () => {
    if (percentage <= 20) return '#ef4444'
    if (percentage <= 40) return '#eab308'
    return '#22c55e'
  }

  return (
    <div className={clsx('relative inline-flex', className)}>
      <svg width={size} height={size} className="-rotate-90">
        {/* Background circle */}
        <circle
          cx={size / 2}
          cy={size / 2}
          r={radius}
          fill="none"
          stroke="#334155"
          strokeWidth={strokeWidth}
        />
        {/* Progress circle */}
        <circle
          cx={size / 2}
          cy={size / 2}
          r={radius}
          fill="none"
          stroke={getColor()}
          strokeWidth={strokeWidth}
          strokeLinecap="round"
          strokeDasharray={circumference}
          strokeDashoffset={strokeDashoffset}
          className="transition-all duration-500"
        />
      </svg>

      {/* Center content */}
      <div className="absolute inset-0 flex items-center justify-center">
        <div className="text-center">
          <p className="text-2xl font-bold text-white">{percentage.toFixed(0)}%</p>
          {label && <p className="text-xs text-slate-500">{label}</p>}
        </div>
      </div>
    </div>
  )
}