/* eslint-disable @next/next/no-img-element -- Scryfall mana SVG URLs; next/image migration is out of scope. */
import { useState, useEffect } from 'react';
import { parseManaSymbols, getColorSymbol } from '../lib/mana-symbols';

/**
 * Individual mana symbol component
 */
function ManaSymbol({ symbol, color, name, scryfall_uri, size = 'md', useSVG = false }) {
  const sizeClasses = {
    xs: 'w-3 h-3 text-xs',
    sm: 'w-4 h-4 text-xs',
    md: 'w-5 h-5 text-sm',
    lg: 'w-6 h-6 text-base',
    xl: 'w-8 h-8 text-lg'
  };

  const isGradient = color.includes('linear-gradient');

  // If using SVG and we have a Scryfall URI, render the SVG
  if (useSVG && scryfall_uri) {
    return (
      <img
        src={scryfall_uri}
        alt={name}
        title={name}
        className={`${sizeClasses[size]} flex-shrink-0`}
        style={{ filter: 'drop-shadow(0 0 2px rgba(0,0,0,0.3))' }}
      />
    );
  }

  // Default circular symbol rendering
  return (
    <span
      className={`inline-flex items-center justify-center rounded-full border border-gray-400 font-bold text-white ${sizeClasses[size]} flex-shrink-0`}
      style={{
        background: isGradient ? color : color,
        color: color === '#FFFBD5' ? '#000' : '#fff',
        textShadow: color === '#FFFBD5' ? 'none' : '0 0 2px rgba(0,0,0,0.8)'
      }}
      title={name}
    >
      {symbol}
    </span>
  );
}

/**
 * Mana cost display component
 * Renders a mana cost string as individual mana symbols
 */
export function ManaCost({ cost, size = 'md', className = '', useSVG = false }) {
  const [symbols, setSymbols] = useState([]);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    async function loadSymbols() {
      if (!cost) {
        setSymbols([]);
        setLoading(false);
        return;
      }

      try {
        const parsedSymbols = await parseManaSymbols(cost);
        setSymbols(parsedSymbols);
      } catch (error) {
        console.error('Error parsing mana symbols:', error);
        setSymbols([]);
      } finally {
        setLoading(false);
      }
    }

    loadSymbols();
  }, [cost]);

  if (!cost) return null;
  if (loading) {
    return (
      <div className={`flex items-center space-x-1 ${className}`}>
        <div className="w-4 h-4 bg-gray-300 rounded-full animate-pulse"></div>
      </div>
    );
  }
  if (symbols.length === 0) return null;

  return (
    <div className={`flex items-center space-x-1 ${className}`}>
      {symbols.map((symbolData, index) => (
        <ManaSymbol
          key={`${symbolData.raw}-${index}`}
          symbol={symbolData.symbol}
          color={symbolData.color}
          name={symbolData.name}
          scryfall_uri={symbolData.scryfall_uri}
          size={size}
          useSVG={useSVG}
        />
      ))}
    </div>
  );
}

/**
 * Color identity display component
 * Shows the color identity of a card using mana symbols
 */
export function ColorIdentity({ colors, size = 'sm', className = '', useSVG = false }) {
  if (!colors || colors.length === 0) {
    // Show colorless symbol for cards with no color identity
    const colorlessSymbol = getColorSymbol('C');
    return (
      <div className={`flex items-center space-x-1 ${className}`}>
        <ManaSymbol
          symbol={colorlessSymbol.symbol}
          color={colorlessSymbol.color}
          name={colorlessSymbol.name}
          scryfall_uri={colorlessSymbol.scryfall_uri}
          size={size}
          useSVG={useSVG}
        />
      </div>
    );
  }

  return (
    <div className={`flex items-center space-x-1 ${className}`}>
      {colors.map((color) => {
        const symbolData = getColorSymbol(color);
        return (
          <ManaSymbol
            key={color}
            symbol={symbolData.symbol}
            color={symbolData.color}
            name={symbolData.name}
            scryfall_uri={symbolData.scryfall_uri}
            size={size}
            useSVG={useSVG}
          />
        );
      })}
    </div>
  );
}

/**
 * Single color symbol component for filters
 */
export function ColorFilterSymbol({ color, isActive, onClick, size = 'md', useSVG = false }) {
  const symbolData = getColorSymbol(color);
  
  return (
    <button
      onClick={() => onClick(color)}
      className={`transition-all duration-200 ${
        isActive 
          ? 'ring-2 ring-accent-ember scale-110' 
          : 'opacity-70 hover:opacity-100 hover:scale-105'
      }`}
      title={symbolData.name}
    >
      <ManaSymbol
        symbol={symbolData.symbol}
        color={symbolData.color}
        name={symbolData.name}
        scryfall_uri={symbolData.scryfall_uri}
        size={size}
        useSVG={useSVG}
      />
    </button>
  );
}

/**
 * Advanced mana cost component with Scryfall analysis
 */
export function AdvancedManaCost({ cost, showAnalysis = false, useSVG = false }) {
  const [analysis, setAnalysis] = useState(null);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    async function loadAnalysis() {
      if (!cost) {
        setAnalysis(null);
        setLoading(false);
        return;
      }

      try {
        const { getManaCostAnalysis } = await import('../lib/mana-symbols');
        const analysisData = await getManaCostAnalysis(cost);
        setAnalysis(analysisData);
      } catch (error) {
        console.error('Error analyzing mana cost:', error);
        setAnalysis(null);
      } finally {
        setLoading(false);
      }
    }

    loadAnalysis();
  }, [cost]);

  if (!cost) return null;
  if (loading) {
    return <div className="w-4 h-4 bg-gray-300 rounded-full animate-pulse"></div>;
  }
  if (!analysis) return <ManaCost cost={cost} useSVG={useSVG} />;

  return (
    <div className="space-y-2">
      <ManaCost cost={analysis.cost} useSVG={useSVG} />
      {showAnalysis && (
        <div className="text-xs text-text-secondary space-y-1">
          <div>CMC: {analysis.cmc}</div>
          {analysis.colors.length > 0 && (
            <div className="flex items-center space-x-1">
              <span>Colors:</span>
              <ColorIdentity colors={analysis.colors} size="xs" useSVG={useSVG} />
            </div>
          )}
          <div className="flex space-x-2">
            {analysis.colorless && <span className="bg-gray-100 text-gray-800 px-1 rounded text-xs">Colorless</span>}
            {analysis.monocolored && <span className="bg-blue-100 text-blue-800 px-1 rounded text-xs">Mono</span>}
            {analysis.multicolored && <span className="bg-purple-100 text-purple-800 px-1 rounded text-xs">Multi</span>}
          </div>
        </div>
      )}
    </div>
  );
}

export default ManaCost;