import React, { useEffect, useRef } from 'react';

interface AudioVisualizerProps {
    isListening: boolean;
    color: string;
}

const AudioVisualizer: React.FC<AudioVisualizerProps> = ({ isListening, color }) => {
    const canvasRef = useRef<HTMLCanvasElement>(null);
    const requestRef = useRef<number>();

    useEffect(() => {
        if (!isListening || !canvasRef.current) return;

        const canvas = canvasRef.current;
        const ctx = canvas.getContext('2d');
        if (!ctx) return;

        let frame = 0;

        const animate = () => {
            frame++;
            const width = canvas.width;
            const height = canvas.height;
            const centerY = height / 2;

            ctx.clearRect(0, 0, width, height);

            // Extract hex color to rgb for glowing effect
            ctx.shadowBlur = 15;
            ctx.shadowColor = color.replace('text-', '').replace('bg-', ''); // Approximation
            ctx.strokeStyle = '#ffffff';
            ctx.lineWidth = 2;

            ctx.beginPath();
            ctx.moveTo(0, centerY);

            for (let i = 0; i < width; i++) {
                // Simulate frequency data with sine waves
                const amplitude = isListening ? 20 : 2;
                const frequency = 0.05;
                const y = centerY + Math.sin(i * frequency + frame * 0.1) * amplitude * Math.sin(i * 0.03);
                ctx.lineTo(i, y);
            }

            ctx.stroke();
            requestRef.current = requestAnimationFrame(animate);
        };

        animate();

        return () => {
            if (requestRef.current) cancelAnimationFrame(requestRef.current);
        };
    }, [isListening, color]);

    return (
        <canvas
            ref={canvasRef}
            width={300}
            height={60}
            className="w-full h-full opacity-80"
        />
    );
};

export default AudioVisualizer;