"use client";

import React, { useState, useEffect, useCallback } from 'react';

interface Testimonial {
  id: number;
  name: string;
  role: string;
  company: string;
  content: string;
  avatar?: string;
  rating: number;
}

interface TestimonialSliderProps {
  testimonials: Testimonial[];
  autoPlayInterval?: number;
}

export const TestimonialSlider: React.FC<TestimonialSliderProps> = ({
  testimonials,
  autoPlayInterval = 5000
}) => {
  const [currentIndex, setCurrentIndex] = useState(0);
  const [isAnimating, setIsAnimating] = useState(false);

  const goToNext = useCallback(() => {
    if (isAnimating) return;
    setIsAnimating(true);
    setCurrentIndex((prev) => (prev + 1) % testimonials.length);
    setTimeout(() => setIsAnimating(false), 500);
  }, [isAnimating, testimonials.length]);

  const goToPrev = useCallback(() => {
    if (isAnimating) return;
    setIsAnimating(true);
    setCurrentIndex((prev) => (prev - 1 + testimonials.length) % testimonials.length);
    setTimeout(() => setIsAnimating(false), 500);
  }, [isAnimating, testimonials.length]);

  useEffect(() => {
    const interval = setInterval(goToNext, autoPlayInterval);
    return () => clearInterval(interval);
  }, [goToNext, autoPlayInterval]);

  const currentTestimonial = testimonials[currentIndex];

  return (
    <div className="relative max-w-4xl mx-auto">
      {/* Background decoration */}
      <div className="absolute -top-4 -left-4 text-8xl text-zsl-primary/10 font-serif select-none">"</div>
      <div className="absolute -bottom-4 -right-4 text-8xl text-zsl-primary/10 font-serif rotate-180 select-none">"</div>

      {/* Main card */}
      <div className="relative bg-zsl-card/80 backdrop-blur-md border border-zsl-primary/20 rounded-2xl p-8 md:p-12">
        {/* Content */}
        <div className={`transition-all duration-500 ${isAnimating ? 'opacity-0 translate-y-4' : 'opacity-100 translate-y-0'}`}>
          {/* Stars */}
          <div className="flex gap-1 mb-6">
            {[...Array(5)].map((_, i) => (
              <svg
                key={i}
                className={`w-5 h-5 ${i < currentTestimonial.rating ? 'text-zsl-accent' : 'text-zsl-muted/30'}`}
                fill="currentColor"
                viewBox="0 0 20 20"
              >
                <path d="M9.049 2.927c.3-.921 1.603-.921 1.902 0l1.07 3.292a1 1 0 00.95.69h3.462c.969 0 1.371 1.24.588 1.81l-2.8 2.034a1 1 0 00-.364 1.118l1.07 3.292c.3.921-.755 1.688-1.54 1.118l-2.8-2.034a1 1 0 00-1.175 0l-2.8 2.034c-.784.57-1.838-.197-1.539-1.118l1.07-3.292a1 1 0 00-.364-1.118L2.98 8.72c-.783-.57-.38-1.81.588-1.81h3.461a1 1 0 00.951-.69l1.07-3.292z" />
              </svg>
            ))}
          </div>

          {/* Quote */}
          <p className="text-lg md:text-xl text-white leading-relaxed mb-8">
            "{currentTestimonial.content}"
          </p>

          {/* Author */}
          <div className="flex items-center gap-4">
            {/* Avatar */}
            <div className="w-14 h-14 rounded-full bg-linear-to-br from-zsl-primary to-zsl-accent p-0.5">
              <div className="w-full h-full rounded-full bg-zsl-card flex items-center justify-center text-xl font-bold text-zsl-primary">
                {currentTestimonial.name.charAt(0)}
              </div>
            </div>

            {/* Info */}
            <div>
              <div className="font-semibold text-white">{currentTestimonial.name}</div>
              <div className="text-sm text-zsl-muted">
                {currentTestimonial.role} • {currentTestimonial.company}
              </div>
            </div>
          </div>
        </div>

        {/* Navigation */}
        <div className="flex items-center justify-between mt-8 pt-6 border-t border-zsl-primary/10">
          {/* Arrows */}
          <div className="flex gap-2">
            <button
              onClick={goToPrev}
              className="w-10 h-10 rounded-full border border-zsl-primary/30 flex items-center justify-center text-zsl-primary hover:bg-zsl-primary hover:text-zsl-bg transition-all duration-300"
              aria-label="Previous testimonial"
            >
              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
              </svg>
            </button>
            <button
              onClick={goToNext}
              className="w-10 h-10 rounded-full border border-zsl-primary/30 flex items-center justify-center text-zsl-primary hover:bg-zsl-primary hover:text-zsl-bg transition-all duration-300"
              aria-label="Next testimonial"
            >
              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
              </svg>
            </button>
          </div>

          {/* Dots */}
          <div className="flex gap-2">
            {testimonials.map((_, index) => (
              <button
                key={index}
                onClick={() => {
                  if (!isAnimating) {
                    setIsAnimating(true);
                    setCurrentIndex(index);
                    setTimeout(() => setIsAnimating(false), 500);
                  }
                }}
                className={`w-2 h-2 rounded-full transition-all duration-300 ${
                  index === currentIndex 
                    ? 'bg-zsl-primary w-6' 
                    : 'bg-zsl-muted/30 hover:bg-zsl-muted/50'
                }`}
                aria-label={`Go to testimonial ${index + 1}`}
              />
            ))}
          </div>
        </div>
      </div>
    </div>
  );
};