'use client';

import { Slider } from '@/components/ui/slider';
import { cn } from '@/lib/utils/cn';
import type { ErrorCorrectionLevel } from '@/types/qrcode';

interface QROptionsProps {
  errorCorrection: ErrorCorrectionLevel;
  foregroundColor: string;
  backgroundColor: string;
  margin: number;
  onErrorCorrectionChange: (ec: ErrorCorrectionLevel) => void;
  onForegroundColorChange: (color: string) => void;
  onBackgroundColorChange: (color: string) => void;
  onMarginChange: (margin: number) => void;
}

const EC_OPTIONS: { value: ErrorCorrectionLevel; label: string; desc: string }[] = [
  { value: 'L', label: 'L', desc: '7%' },
  { value: 'M', label: 'M', desc: '15%' },
  { value: 'Q', label: 'Q', desc: '25%' },
  { value: 'H', label: 'H', desc: '30%' },
];

const inputCls =
  'w-full bg-transparent border border-border/40 rounded-lg px-3 py-1.5 text-xs font-mono outline-none focus:border-primary/50 transition-colors text-foreground/80 placeholder:text-muted-foreground/30';

export function QROptions({
  errorCorrection,
  foregroundColor,
  backgroundColor,
  margin,
  onErrorCorrectionChange,
  onForegroundColorChange,
  onBackgroundColorChange,
  onMarginChange,
}: QROptionsProps) {
  const isTransparent = backgroundColor === '#00000000';

  return (
    <div className="space-y-5">

      {/* Error Correction */}
      <div>
        <span className="text-[10px] font-semibold text-muted-foreground uppercase tracking-widest block mb-2">
          Error Correction
        </span>
        <div className="flex gap-1.5">
          {EC_OPTIONS.map((opt) => (
            <button
              key={opt.value}
              onClick={() => onErrorCorrectionChange(opt.value)}
              className={cn(
                'flex-1 flex flex-col items-center py-2 rounded-lg border text-xs font-mono transition-all',
                errorCorrection === opt.value
                  ? 'bg-primary/10 border-primary/40 text-primary'
                  : 'border-border/30 text-muted-foreground hover:border-primary/30 hover:text-foreground'
              )}
            >
              <span className="font-semibold">{opt.label}</span>
              <span className="text-[9px] opacity-50 mt-0.5">{opt.desc}</span>
            </button>
          ))}
        </div>
      </div>

      {/* Colors */}
      <div className="space-y-3">
        <span className="text-[10px] font-semibold text-muted-foreground uppercase tracking-widest block">
          Colors
        </span>

        {/* Foreground */}
        <div>
          <label className="text-[9px] text-muted-foreground/50 font-mono block mb-1.5">Foreground</label>
          <div className="flex gap-1.5">
            <input
              type="color"
              value={foregroundColor}
              onChange={(e) => onForegroundColorChange(e.target.value)}
              className="w-8 h-8 rounded-lg cursor-pointer border border-border/40 bg-transparent shrink-0 p-0.5"
            />
            <input
              type="text"
              value={foregroundColor}
              onChange={(e) => onForegroundColorChange(e.target.value)}
              className={inputCls}
            />
          </div>
        </div>

        {/* Background */}
        <div>
          <div className="flex items-center justify-between mb-1.5">
            <label className="text-[9px] text-muted-foreground/50 font-mono">Background</label>
            <button
              onClick={() => onBackgroundColorChange(isTransparent ? '#ffffff' : '#00000000')}
              className={cn(
                'text-[9px] font-mono px-1.5 py-0.5 rounded border transition-all',
                isTransparent
                  ? 'border-primary/40 text-primary bg-primary/10'
                  : 'border-border/30 text-muted-foreground/50 hover:border-primary/30 hover:text-primary'
              )}
            >
              Transparent
            </button>
          </div>
          <div className="flex gap-1.5">
            <input
              type="color"
              disabled={isTransparent}
              value={isTransparent ? '#ffffff' : backgroundColor}
              onChange={(e) => onBackgroundColorChange(e.target.value)}
              className={cn(
                'w-8 h-8 rounded-lg cursor-pointer border border-border/40 bg-transparent shrink-0 p-0.5 transition-opacity',
                isTransparent && 'opacity-30 cursor-not-allowed'
              )}
            />
            <input
              type="text"
              disabled={isTransparent}
              value={isTransparent ? 'transparent' : backgroundColor}
              onChange={(e) => onBackgroundColorChange(e.target.value)}
              className={cn(inputCls, isTransparent && 'opacity-30')}
            />
          </div>
        </div>
      </div>

      {/* Margin */}
      <div>
        <div className="flex items-center justify-between mb-2">
          <span className="text-[10px] font-semibold text-muted-foreground uppercase tracking-widest">
            Margin
          </span>
          <span className="text-[10px] text-muted-foreground/40 font-mono tabular-nums">{margin}</span>
        </div>
        <Slider
          value={[margin]}
          onValueChange={([v]) => onMarginChange(v)}
          min={0}
          max={8}
          step={1}
        />
      </div>
    </div>
  );
}