"use client";
import { motion, useMotionValue, useTransform, animate } from "motion/react";
import { ChevronLeft } from "lucide-react";
import { useEffect, useState } from "react";
import { toPersian } from "../lib/utils";
import { useSettingsStore } from "../store/settingsStore";

function StatCounter({ target }: { target: number }) {
  const [displayValue, setDisplayValue] = useState(0);

  useEffect(() => {
    const controls = animate(0, target, { 
      duration: 3, 
      ease: [0.16, 1, 0.3, 1], // Custom cubic-bezier for a more polished feel
      onUpdate: (latest) => setDisplayValue(Math.round(latest))
    });
    return controls.stop;
  }, [target]);

  return (
    <motion.div 
      initial={{ scale: 0.8, opacity: 0 }}
      animate={{ scale: 1, opacity: 1 }}
      transition={{ duration: 2.5, ease: "easeOut" }}
      className="text-4xl lg:text-6xl font-black text-canina-blue font-vazir origin-right flex items-center"
    >
      <motion.span
        animate={{ scale: [1, 1.1, 1] }}
        transition={{ duration: 3, ease: "easeInOut" }}
      >
        {toPersian(displayValue)}+
      </motion.span>
    </motion.div>
  );
}

function Typewriter({ text }: { text: string }) {
  const [displayText, setDisplayText] = useState("");
  useEffect(() => {
    let i = 0;
    const interval = setInterval(() => {
      setDisplayText(text.slice(0, i));
      i++;
      if (i > text.length) clearInterval(interval);
    }, 150);
    return () => clearInterval(interval);
  }, [text]);

  return (
    <div className="text-4xl lg:text-6xl font-black text-canina-blue font-vazir flex flex-row-reverse items-center">
      <span className="relative">
        {toPersian(displayText)}
        <motion.span 
          animate={{ opacity: [0, 1, 0] }}
          transition={{ duration: 0.8, repeat: Infinity }}
          className="absolute -left-1 top-0 h-full w-[3px] bg-canina-blue"
        />
      </span>
    </div>
  );
}

export default function Hero({ onProfileClick, onShopNavigate }: { onProfileClick?: () => void, onShopNavigate?: () => void }) {
  const getText = useSettingsStore(state => state.getText);
  const title = getText('hero_title', "تخصص آلمانی در خدمت\nسلامت پت‌های خانگی");
  const titleParts = title.split('\n');

  return (
    <section className="relative overflow-hidden bg-white py-20 lg:py-32 border-b border-medical-gray-100">
      {/* Background patterns */}
      <div className="absolute top-0 left-0 w-full h-full opacity-[0.03] pointer-events-none select-none overflow-hidden">
        <div className="absolute top-0 right-0 w-[800px] h-[800px] bg-canina-blue rounded-full blur-[120px] -mr-96 -mt-96" />
        <div className="absolute bottom-0 left-0 w-[600px] h-[600px] bg-medical-gray-500 rounded-full blur-[100px] -ml-40 -mb-40" />
      </div>

      <div className="max-w-7xl mx-auto px-4 relative flex flex-col lg:flex-row items-center gap-12">
        {/* Content */}
        <div className="lg:w-1/2 text-center lg:text-right">
          <motion.div
            initial={{ opacity: 0, y: 20 }}
            animate={{ opacity: 1, y: 0 }}
            transition={{ duration: 0.6 }}
          >
            <div className="inline-flex items-center gap-2 px-3 py-1 bg-canina-blue/5 border border-canina-blue/10 rounded-full mb-6">
              <span className="w-2 h-2 rounded-full bg-canina-blue animate-pulse" />
              <span className="text-canina-blue text-xs font-bold uppercase tracking-widest leading-none">{getText('hero_badge', "تخصص دارویی از آلمان")}</span>
            </div>
            
            <h1 className="text-4xl lg:text-7xl font-black text-medical-gray-900 leading-[1.1] mb-6">
              {titleParts[0]} <br />
              {titleParts[1] && <span className="text-canina-blue font-vazir">{titleParts[1]}</span>}
            </h1>
            
            <p 
              className="text-lg lg:text-xl text-medical-gray-600 mb-10 max-w-2xl mx-auto lg:mx-0 leading-relaxed font-vazir animate-fade-in"
              dangerouslySetInnerHTML={{
                __html: getText(
                  'hero_desc',
                  'بیش از <span className="font-bold text-canina-blue">۴۰ سال</span> تجربه نوآورانه در تولید مکمل‌های درمانی با بالاترین استاندارد کیفی «گرید دارویی اختصاصی». راهکار هوشمند برای هر نیاز بالینی.'
                )
              }}
            />

            <div className="flex flex-wrap justify-center lg:justify-start gap-4">
              <button 
                onClick={() => {
                  const element = document.getElementById('canina-advisor');
                  if (element) {
                    element.scrollIntoView({ behavior: 'smooth' });
                  }
                }}
                className="bg-medical-gray-900 text-white px-10 py-5 rounded-full font-bold text-lg hover:bg-canina-blue hover:shadow-2xl transition-all flex items-center gap-2 group font-vazir"
              >
                {getText('hero_btn_advisor', "دستیار سلامت پت")}
                <ChevronLeft className="w-5 h-5 group-hover:-translate-x-1 transition-transform" />
              </button>
              <button 
                onClick={onShopNavigate}
                className="bg-white border-2 border-medical-gray-200 text-medical-gray-700 px-10 py-5 rounded-full font-bold text-lg hover:border-canina-blue hover:text-canina-blue transition-all font-vazir"
              >
                {getText('hero_btn_products', "مشاهده محصولات")}
              </button>
            </div>
          </motion.div>

          {/* Stats */}
          <motion.div 
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            transition={{ delay: 0.8, duration: 0.6 }}
            className="grid grid-cols-3 gap-8 mt-16 pt-8 border-t border-medical-gray-100"
          >
            <div className="flex flex-col items-center lg:items-end">
              <Typewriter text={getText('hero_stat_founded', "۱۹۸۴ سال تأسیس")} />
            </div>
            <div className="flex flex-col items-center lg:items-end">
              <StatCounter target={40} />
              <div className="text-xs text-medical-gray-500 font-bold uppercase tracking-tight mt-3 font-vazir">{getText('hero_stat_agencies', "نمایندگی فعال")}</div>
            </div>
            <div className="flex flex-col items-center lg:items-end">
              <div className="relative overflow-hidden group">
                <motion.div 
                   className="text-4xl lg:text-6xl font-black text-canina-blue font-vazir relative z-10"
                >
                  ۱۰۰٪
                </motion.div>
                <motion.div 
                  initial={{ x: "-100%" }}
                  animate={{ x: "200%" }}
                  transition={{ duration: 3, repeat: Infinity, ease: "linear" }}
                  className="absolute inset-0 bg-gradient-to-r from-transparent via-white/40 to-transparent skew-x-12 z-20 pointer-events-none"
                />
              </div>
              <div className="text-xs text-medical-gray-500 font-bold uppercase tracking-tight mt-3 font-vazir">{getText('hero_stat_german_formula', "فرمول آلمانی")}</div>
            </div>
          </motion.div>
        </div>

        {/* Visual Element */}
        <div className="lg:w-1/2 relative">
          <motion.div
            initial={{ opacity: 0, scale: 0.9, rotate: -5 }}
            animate={{ opacity: 1, scale: 1, rotate: 0 }}
            transition={{ duration: 1, ease: "easeOut" }}
            className="relative z-10"
          >
            <div className="aspect-square bg-medical-gray-100 rounded-[2rem] overflow-hidden border-4 border-white shadow-2xl relative">
              <img 
                src="https://images.unsplash.com/photo-1583337130417-3346a1be7dee?auto=format&fit=crop&q=80&w=800" 
                alt="German Veterinary Expert" 
                className="w-full h-full object-cover grayscale-[20%] hover:grayscale-0 transition-all duration-700"
                referrerPolicy="no-referrer"
              />
              <div className="absolute bottom-0 left-0 right-0 p-8 bg-gradient-to-t from-black/80 to-transparent text-white text-right">
                <div className="text-sm font-medium mb-1 opacity-80 uppercase tracking-widest text-[10px]">{getText('hero_image_badge', "سرآمد علمی در پزشکی پت‌ها")}</div>
                <div className="text-xl font-bold italic tracking-tighter">{getText('hero_image_title', "مکمل‌های تایید شده دامپزشکی")}</div>
              </div>
            </div>
          </motion.div>
          
          {/* Badge */}
          <motion.div
            animate={{ rotate: 360 }}
            transition={{ duration: 20, repeat: Infinity, ease: "linear" }}
            className="absolute -top-6 -right-6 lg:-top-10 lg:-right-10 z-20 w-32 h-32 lg:w-40 lg:h-40 bg-white shadow-xl rounded-full p-1 border-2 border-dashed border-canina-blue flex items-center justify-center text-center p-4"
          >
            <div className="flex flex-col items-center">
              <span className="text-2xl lg:text-3xl font-black text-canina-blue leading-none tracking-tighter">DE</span>
              <span className="text-[8px] lg:text-[10px] font-bold text-medical-gray-500 uppercase tracking-widest mt-1">{getText('hero_quality_standard', "استاندارد کیفی آلمان")}</span>
            </div>
          </motion.div>
        </div>
      </div>
    </section>
  );
}