import { useEffect, useRef } from 'react';

const ThoughtBubble = ({ 
  isFirstLoad,
  isThinking,
  thought,
  isMouthOpen,
  handDetected,
  isLeftHand,
  thumbPosition,
  canvasWidth,
  isMobile,
  animateThinking,
  createSparkleParticles,
  createPopParticles
}) => {
  const thoughtBubbleRef = useRef(null);

  // Add particle effects when thought appears
  useEffect(() => {
    if (thought && isMouthOpen && thoughtBubbleRef.current) {
      const bubbleRect = thoughtBubbleRef.current.getBoundingClientRect();
      const x = bubbleRect.left + bubbleRect.width / 2;
      const y = bubbleRect.top + bubbleRect.height / 2;
      createSparkleParticles(x, y);
    }
  }, [thought, isMouthOpen, createSparkleParticles]);

  // Add pop effect when thought disappears
  useEffect(() => {
    if (!isMouthOpen && thought && thoughtBubbleRef.current) {
      const bubbleRect = thoughtBubbleRef.current.getBoundingClientRect();
      const x = bubbleRect.left + bubbleRect.width / 2;
      const y = bubbleRect.top + bubbleRect.height / 2;
      createPopParticles(x, y);
    }
  }, [isMouthOpen, thought, createPopParticles]);

  // Get bubble content based on state
  const getBubbleContent = () => {
    if (isFirstLoad) {
      return <p className={`${isMobile ? 'text-sm' : 'text-lg'} font-medium text-gray-500 italic`}>Open and close your hand to generate thoughts...</p>;
    }
    
    if (isThinking) {
      // Much larger emoji size with blinking animation
      return (
        <span 
          style={{ 
            fontSize: isMobile ? '28px' : '36px',
            animation: 'thinking-blink 1.5s ease-in-out infinite'
          }}
        >
          🤔
        </span>
      );
    }
    
    if (thought && isMouthOpen) {
      // Much larger text size
      return <p style={{ fontSize: isMobile ? '18px' : '22px' }} className="font-medium text-gray-800">{thought}</p>;
    }
    
    return <p className={`${isMobile ? 'text-sm' : 'text-lg'} font-medium text-gray-400 italic`}>Waiting for hand gesture...</p>;
  };

  // Determine if the bubble should be visible
  const shouldShowBubble = () => {
    // Only show during first load, when thinking, or when mouth is open
    return isFirstLoad || isThinking || isMouthOpen;
  };

  // Calculate opacity based on state
  const getOpacity = () => {
    return isMouthOpen || isThinking ? 1 : 0.7;
  };

  // Get appropriate padding based on content
  const getBubblePadding = () => {
    if (isThinking) {
      // More padding for larger emoji
      return isMobile ? '10px' : '12px';
    }
    // More padding for larger text
    return isMobile ? '12px 16px' : '16px 20px';
  };

  // Get appropriate border radius based on content
  const getBubbleBorderRadius = () => {
    if (isThinking) {
      // More circular for emoji
      return isMobile ? '35px' : '40px';
    }
    // Normal border radius for text content
    return isMobile ? '16px' : '20px';
  };
  
  // Get appropriate width based on content
  const getBubbleWidth = () => {
    if (!handDetected) {
      return isMobile ? '90%' : `${canvasWidth * 0.8}px`;
    }
    
    if (isThinking) {
      // Much wider to accommodate larger emoji
      return isMobile ? '70px' : '80px';
    }
    
    // Wider for larger text content
    const bubbleWidth = isMobile 
      ? Math.min(220, canvasWidth * 0.7) 
      : Math.min(300, canvasWidth * 0.6);
      
    return `${bubbleWidth}px`;
  };

  // Calculate thought bubble position
  const getBubbleStyle = () => {
    if (!handDetected) {
      // Default position when no hand is detected
      return {
        position: 'absolute',
        bottom: '20px',
        left: '50%',
        transform: animateThinking ? undefined : 'translateX(-50%)',
        width: getBubbleWidth(),
      };
    }
    
    const offset = isMobile ? 12 : 20; // Space between thumb and bubble
    
    if (isLeftHand) {
      // For left hand, position to the right of thumb
      return {
        position: 'absolute',
        top: `${thumbPosition.y - (isMobile ? 20 : 30)}px`,
        left: `${thumbPosition.x + offset}px`,
        width: getBubbleWidth(),
        maxWidth: isThinking ? 'none' : `${canvasWidth - thumbPosition.x - (offset * 2)}px` // Prevent overflow
      };
    } else {
      // For right hand, position to the left of thumb
      return {
        position: 'absolute',
        top: `${thumbPosition.y - (isMobile ? 20 : 30)}px`,
        right: `${canvasWidth - thumbPosition.x + offset}px`,
        width: getBubbleWidth(),
        maxWidth: isThinking ? 'none' : `${thumbPosition.x - (offset * 2)}px` // Prevent overflow
      };
    }
  };

  if (!shouldShowBubble()) {
    return null;
  }

  return (
    <div 
      ref={thoughtBubbleRef}
      className="thought-bubble"
      style={{
        ...getBubbleStyle(),
        backgroundColor: 'rgba(255, 255, 255, 0.8)',
        backdropFilter: 'blur(8px)',
        border: 'none',
        boxShadow: '0 4px 30px rgba(0, 0, 0, 0.1)',
        padding: getBubblePadding(),
        borderRadius: getBubbleBorderRadius(),
        textAlign: isThinking ? 'center' : 'left',
        zIndex: 50,
        fontFamily: 'Google Sans, sans-serif',
        transition: animateThinking ? 'none' : 'all 0.3s ease-in-out',
        opacity: getOpacity(),
        display: 'flex',
        justifyContent: isThinking ? 'center' : 'flex-start',
        alignItems: 'center',
        animation: !isMouthOpen && thought ? 'pop-out 0.3s ease-out forwards' :
                  animateThinking ? 'spring-wiggle 1.2s cubic-bezier(0.2, 0.9, 0.3, 1.5)' : 
                  'none',
        transformOrigin: isLeftHand ? 'left center' : 'right center',
        willChange: 'transform, opacity'
      }}
    >
      {getBubbleContent()}
    </div>
  );
};

export default ThoughtBubble;