"use client";
import React, { useState, useMemo, useEffect } from "react";
import { Product, PetType } from "../lib/data/products";
import { usePetStore } from "../lib/store/usePetStore";
import { productService } from "../lib/services/productService";
import { motion, AnimatePresence } from "motion/react";
import { ProductCardSkeleton } from "./Skeleton";
import { toast } from "sonner";
import { 
  Search, 
  Filter, 
  Dog, 
  Cat, 
  ShieldCheck, 
  ChevronLeft, 
  ChevronRight,
  Activity, 
  Sparkles, 
  Stethoscope,
  HeartPulse,
  Heart,
  AlertCircle,
  Plus,
  Loader2
} from "lucide-react";
import { useCartStore } from "../lib/store/cartStore";
import SafeImage from "./SafeImage";

const CATEGORIES = [
  { id: "all", label: "همه محصولات", icon: <Activity className="w-4 h-4" /> },
  { id: "joints", label: "حرکتی و مفاصل", icon: <HeartPulse className="w-4 h-4" /> },
  { id: "immune", label: "تقویت و ایمنی", icon: <ShieldCheck className="w-4 h-4" /> },
  { id: "energy", label: "ویتامین و انرژی", icon: <Activity className="w-4 h-4" /> },
  { id: "special-care", label: "پلتفرم مراقبت ویژه", icon: <Stethoscope className="w-4 h-4" /> },
];

const CATEGORY_MAP: Record<string, { category?: string; query?: string; symptoms?: string[] }> = {
  // Main Categories
  "joints": { category: "joints" },
  "immune": { category: "immune" },
  "energy": { category: "energy" },
  "special-care": { category: "special-care" },
  
  // Persian Fallbacks (for robust matching)
  "مفاصل و استخوان": { category: "joints" },
  "تقویت سیستم ایمنی و گوارش": { category: "immune" },
  "ویتامین‌ها و انرژی‌بخش‌ها": { category: "energy" },
  "مراقبت‌های ویژه (پوست، دندان و چشم)": { category: "special-care" },

  // Solutions
  "آرتروز سگ‌های پیر": { category: "joints", symptoms: ["درد مفاصل", "سختی در بلند شدن", "لنگیدن"] },
  "رشد استخوانی توله‌سگ": { category: "joints", symptoms: ["رشد سریع توله‌سگ"] },
  "تقویت رباط و تاندون": { category: "joints", query: "تاندون" },
  
  "پیشگیری از بیماری": { category: "immune", symptoms: ["ضعف بعد از بیماری"] },
  "رفع اسهال و یبوست": { category: "immune", symptoms: ["اسهال", "یبوست", "اسهال مزمن"] },
  "پروبیوتیک‌ها": { category: "immune", query: "فیبر" },

  "مکمل‌های مولتی‌ویتامین": { category: "energy", query: "ویتامین" },
  "افزایش اشتها": { category: "energy", symptoms: ["بی‌اشتهایی"] },
  "رشد و بلوغ": { category: "energy", query: "انرژی" },

  "سلامت پوست و مفاصل": { category: "special-care", symptoms: ["خشکی پوست", "ریزش مو", "خارش"] },
  "رفع جرم دندان": { category: "special-care", symptoms: ["جرم دندان", "بوی بد دهان", "التهاب لثه"] },
  "شستشوی چشم": { category: "special-care", query: "چشم" },
};

const SYMPTOMS = [
  "لنگیدن", "سختی در بلند شدن", "ریزش مو", "جرم دندان", "بی‌اشتهایی", "اسهال مزمن", "بعد از مصرف آنتی‌بیوتیک"
];

const ArchiveProductCard: React.FC<{ product: Product, onClick: (p: Product) => void }> = ({ product, onClick }) => {
  const { addItem } = useCartStore();
  const [isAdding, setIsAdding] = useState(false);
  const activePet = usePetStore(state => state.pets.find(p => p.id === state.activePetId) || null);

  const handleAddToCart = (e: React.MouseEvent) => {
    e.stopPropagation();
    setIsAdding(true);
    addItem(product, 1);
    toast.success(`${product.name} به سبد خرید اضافه شد`);
    setTimeout(() => setIsAdding(false), 800);
  };

  const compatibility = useMemo(() => {
    if (!activePet) return null;
    
    const sameSpecies = product.suitableFor === activePet.type || product.suitableFor === "هر دو";
    const helpsSymptom = (activePet.medicalConditions || []).some(s => product.symptoms.includes(s));
    
    if (!sameSpecies) return { type: 'alert', text: `مخصوص ${product.suitableFor}` };
    if (helpsSymptom) return { type: 'success', text: `توصیه شده برای راهکار ${activePet.name}` };
    if (sameSpecies) return { type: 'neutral', text: `مناسب برای ${activePet.name}` };
    
    return null;
  }, [product, activePet]);

  return (
    <motion.div
      layout
      initial={{ opacity: 0, y: 20 }}
      animate={{ opacity: 1, y: 0 }}
      onClick={() => onClick(product)}
      className="group bg-white rounded-[2.5rem] border border-medical-gray-200 overflow-hidden hover:shadow-2xl transition-all cursor-pointer flex flex-col h-full relative"
    >
      {product.specialBadge && (
        <div className="absolute top-4 right-4 z-10 bg-canina-blue text-white text-[9px] font-black uppercase tracking-widest px-3 py-1 rounded-full shadow-lg">
          {product.specialBadge}
        </div>
      )}
      
      {compatibility && (
        <div className={`absolute top-14 right-4 z-10 text-[8px] font-black uppercase tracking-widest px-3 py-1 rounded-full shadow-md flex items-center gap-1 ${
          compatibility.type === 'alert' ? 'bg-amber-100 text-amber-700' : 
          compatibility.type === 'success' ? 'bg-green-100 text-green-700' : 'bg-medical-gray-100 text-medical-gray-600'
        }`}>
          {compatibility.type === 'alert' ? <AlertCircle className="w-2.5 h-2.5" /> : compatibility.type === 'success' ? <Heart className="w-2.5 h-2.5" /> : <Sparkles className="w-2.5 h-2.5" />}
          {compatibility.text}
        </div>
      )}
      
      <div className="aspect-square bg-medical-gray-50 flex items-center justify-center p-8 overflow-hidden relative">
        <SafeImage src={product.image} alt={product.name} className="w-full h-full object-contain group-hover:scale-110 transition-transform duration-700" />
        <div className="absolute bottom-4 left-4 flex gap-2">
            {(product.suitableFor === "سگ" || product.suitableFor === "هر دو") && (
                <div className="w-7 h-7 bg-white rounded-lg flex items-center justify-center text-medical-gray-400 border border-medical-gray-100 shadow-sm">
                    <Dog className="w-4 h-4" />
                </div>
            )}
            {(product.suitableFor === "گربه" || product.suitableFor === "هر دو") && (
                <div className="w-7 h-7 bg-white rounded-lg flex items-center justify-center text-medical-gray-400 border border-medical-gray-100 shadow-sm">
                    <Cat className="w-4 h-4" />
                </div>
            )}
        </div>
      </div>

      <div className="p-6 flex flex-col flex-1">
        <div className="text-[10px] font-bold text-canina-blue uppercase tracking-widest mb-2">{product.category}</div>
        <h3 className="text-lg font-black text-medical-gray-900 group-hover:text-canina-blue transition-colors mb-3 leading-tight">{product.name}</h3>
        
        <div className="flex flex-wrap gap-1 mb-6">
            {product.symptoms.slice(0, 2).map((s, i) => (
                <span key={i} className="text-[9px] font-bold bg-medical-gray-100 text-medical-gray-500 px-2 py-0.5 rounded-md">
                    {s}
                </span>
            ))}
        </div>

        <div className="mt-auto flex items-center justify-between pt-4 border-t border-medical-gray-50">
            <span className="font-black text-medical-gray-900 font-vazir">{product.price}</span>
            <button 
              onClick={handleAddToCart}
              disabled={isAdding}
              className="w-10 h-10 rounded-xl bg-medical-gray-50 text-canina-blue flex items-center justify-center group-hover:bg-canina-blue group-hover:text-white transition-all disabled:opacity-50"
            >
                {isAdding ? <Loader2 className="w-4 h-4 animate-spin" /> : <Plus className="w-4 h-4" />}
            </button>
        </div>
      </div>
    </motion.div>
  );
}

import { useRouter } from 'next/navigation';

export default function ArchivePage({ 
  initialCategory = "all",
  initialSearch = ""
}: { 
  initialCategory?: string,
  initialSearch?: string
}) {
  const router = useRouter();
  const [selectedCategory, setSelectedCategory] = useState(initialCategory);
  const [selectedPet, setSelectedPet] = useState<PetType | "all">("all");
  const [activeSymptoms, setActiveSymptoms] = useState<string[]>([]);
  const [searchQuery, setSearchQuery] = useState(initialSearch);
  const [isUpdating, setIsUpdating] = useState(false);
  const [filteredProducts, setFilteredProducts] = useState<Product[]>([]);

  // Debug Log for Search Params
  useEffect(() => {
    console.log("[ArchivePage] URL Params Sync:", { initialCategory, initialSearch });
  }, [initialCategory, initialSearch]);

  // Sync state with prop change (e.g. from Header menu)
  useEffect(() => {
    setIsUpdating(true);
    
    // Normalize Input (Trim and lowercase)
    const normSearch = (initialSearch || "").trim().toLowerCase();
    const normCat = initialCategory.trim().toLowerCase();
    
    const mapKey = normSearch || normCat;
    const mapping = CATEGORY_MAP[mapKey];

    console.log("[ArchivePage] Processing Mapping for:", mapKey);

    // Reset ALL other filters when a new category/solution is selected from menu
    setSelectedPet("all");
    setActiveSymptoms([]);
    setSearchQuery("");

    if (mapping) {
      if (mapping.category) setSelectedCategory(mapping.category);
      if (mapping.query) setSearchQuery(mapping.query);
      if (mapping.symptoms) {
        setActiveSymptoms(mapping.symptoms);
      }
    } else {
      setSelectedCategory(initialCategory);
      setSearchQuery(initialSearch);
      
      if (initialSearch && SYMPTOMS.includes(initialSearch)) {
        setActiveSymptoms([initialSearch]);
      }
    }

    const timer = setTimeout(() => {
      window.scrollTo({ top: 0, behavior: "smooth" });
    }, 400);
    
    return () => clearTimeout(timer);
  }, [initialCategory, initialSearch]);

  useEffect(() => {
    const fetchProducts = async () => {
      setIsUpdating(true);
      try {
        const data = await productService.getProducts({
          category: selectedCategory,
          petType: selectedPet,
          query: searchQuery
        });
        
        let result = data;
        if (activeSymptoms.length > 0) {
          result = result.filter(p => p.symptoms.some(s => activeSymptoms.includes(s)));
        }
        
        setFilteredProducts(result);
      } catch (error) {
        console.error("Failed to fetch products:", error);
        toast.error("خطا در دریافت لیست محصولات از سرور. لطفاً صفحه را رفرش کنید.");
      } finally {
        setIsUpdating(false);
      }
    };

    fetchProducts();
  }, [selectedCategory, selectedPet, searchQuery, activeSymptoms]);

  const toggleSymptom = (s: string) => {
    setActiveSymptoms(prev => prev.includes(s) ? prev.filter(item => item !== s) : [...prev, s]);
  };

  return (
    <div className="min-h-screen bg-medical-gray-50 pb-20 px-4 pt-10 font-vazir" dir="rtl">
      <div className="max-w-7xl mx-auto">
        
        {/* Mobile Navigation & Breadcrumbs */}
        <div className="lg:hidden mb-10 space-y-4">
          <button 
            onClick={() => router.back()}
            className="flex items-center gap-2 text-medical-gray-500 font-bold hover:text-canina-blue transition-colors"
          >
            <ChevronRight className="w-5 h-5 font-vazir" />
            <span>بازگشت</span>
          </button>
          
          <div className="flex items-center gap-2 text-[10px] font-black text-medical-gray-400 uppercase tracking-widest overflow-x-auto whitespace-nowrap pb-2">
            <span className="cursor-pointer hover:text-canina-blue" onClick={() => router.push('/')}>کانینا</span>
            <ChevronLeft className="w-2.5 h-2.5" />
            <span className="text-canina-blue">فروشگاه تخصصی</span>
          </div>
        </div>

        {/* Desktop Breadcrumbs */}
        <div className="hidden lg:flex items-center gap-2 text-[10px] font-black text-medical-gray-400 uppercase tracking-widest mb-10">
           <span className="cursor-pointer hover:text-canina-blue" onClick={() => router.push('/')}>خانه</span>
           <ChevronLeft className="w-2.5 h-2.5" />
           <span className="text-canina-blue">کاتالوگ کامل محصولات</span>
        </div>

        <div className="flex flex-col lg:flex-row gap-10">
          
          {/* Sidebar Filters */}
          <aside className="lg:w-72 flex-shrink-0 space-y-8">
            <div className="bg-white rounded-[2rem] p-6 border border-medical-gray-200 shadow-sm">
                <div className="flex items-center gap-2 mb-6">
                    <Filter className="w-5 h-5 text-canina-blue" />
                    <h3 className="font-black text-medical-gray-900">فیلترهای تخصصی</h3>
                </div>

                <div className="space-y-6">
                    {/* Pet Type */}
                    <div>
                        <span className="text-[10px] font-black text-medical-gray-400 uppercase tracking-widest block mb-3">نوع پت</span>
                        <div className="grid grid-cols-3 gap-2">
                             {[
                                { id: "all", label: "هر دو", icon: <Activity className="w-3 h-3" /> },
                                { id: "سگ", label: "سگ", icon: <Dog className="w-3 h-3" /> },
                                { id: "گربه", label: "گربه", icon: <Cat className="w-3 h-3" /> },
                             ].map(pet => (
                                <button
                                    key={pet.id}
                                    onClick={() => setSelectedPet(pet.id as any)}
                                    className={`py-2 rounded-xl text-[10px] font-black border transition-all flex flex-col items-center gap-1 ${selectedPet === pet.id ? 'bg-canina-blue border-canina-blue text-white shadow-lg shadow-canina-blue/20' : 'bg-white border-medical-gray-200 text-medical-gray-400'}`}
                                >
                                    {pet.icon}
                                    {pet.label}
                                </button>
                             ))}
                        </div>
                    </div>

                    {/* Solutions */}
                    <div>
                        <span className="text-[10px] font-black text-medical-gray-400 uppercase tracking-widest block mb-3">راهکار درمانی</span>
                        <div className="flex flex-col gap-2">
                            {CATEGORIES.map(cat => (
                                <button
                                    key={cat.id}
                                    onClick={() => setSelectedCategory(cat.id)}
                                    className={`flex items-center gap-3 px-4 py-3 rounded-2xl text-xs font-bold transition-all border ${selectedCategory === cat.id ? 'bg-canina-blue border-canina-blue text-white' : 'bg-white border-medical-gray-100 text-medical-gray-600 hover:border-canina-blue/30'}`}
                                >
                                    {cat.icon}
                                    {cat.label}
                                </button>
                            ))}
                        </div>
                    </div>

                    {/* Symptoms Checklist */}
                    <div>
                         <span className="text-[10px] font-black text-medical-gray-400 uppercase tracking-widest block mb-3">جستجو بر اساس علائم</span>
                         <div className="flex flex-wrap gap-2">
                            {SYMPTOMS.map(s => (
                                <button
                                    key={s}
                                    onClick={() => toggleSymptom(s)}
                                    className={`px-3 py-1.5 rounded-lg text-[10px] font-bold transition-all border ${activeSymptoms.includes(s) ? 'bg-medical-gray-900 border-medical-gray-900 text-white' : 'bg-medical-gray-50 border-medical-gray-100 text-medical-gray-500 hover:border-medical-gray-300'}`}
                                >
                                    {s}
                                </button>
                            ))}
                         </div>
                    </div>
                </div>
            </div>
            
            {/* Promo Card */}
            <div className="bg-medical-gray-900 rounded-[2rem] p-6 text-white relative overflow-hidden group">
                 <div className="absolute -top-10 -left-10 w-32 h-32 bg-canina-blue rounded-full blur-3xl opacity-20 group-hover:opacity-40 transition-opacity" />
                 <h4 className="text-lg font-black italic mb-4 relative z-10 underline decoration-canina-blue underline-offset-8">مشاوره رایگان</h4>
                 <p className="text-xs text-white/60 leading-relaxed mb-6 relative z-10">اگر نمی‌دانید کدام ترکیب برای پت شما مناسب است، همین حالا با دامپزشکان ما تماس بگیرید.</p>
                 <a href="tel:0218888" className="w-full bg-white text-medical-gray-900 py-3 rounded-xl text-xs font-black hover:scale-105 transition-transform relative z-10 flex items-center justify-center">شماره تماس: ۰۲۱-۸۸۸۸</a>
            </div>
          </aside>

          {/* Main Content */}
          <main className="flex-1 relative">
            <div className="flex flex-col md:flex-row items-center justify-between mb-8 gap-4">
                <h2 className="text-3xl font-black text-medical-gray-900">کاتولوگ دارویی <span className="text-canina-blue">Canina</span></h2>
                <div className="relative w-full md:w-80">
                    <Search className="absolute right-4 top-1/2 -translate-y-1/2 w-4 h-4 text-medical-gray-400" />
                    <input 
                        type="text" 
                        placeholder="جستجوی محصول..."
                        value={searchQuery}
                        onChange={(e) => setSearchQuery(e.target.value)}
                        className="w-full bg-white border border-medical-gray-200 rounded-full py-3 pr-11 pl-4 text-sm focus:outline-none focus:ring-2 focus:ring-canina-blue/20"
                    />
                </div>
            </div>

            <AnimatePresence mode="wait">
            {isUpdating ? (
                <div key="skeleton" className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-6">
                    {Array.from({ length: 6 }).map((_, i) => (
                        <ProductCardSkeleton key={i} />
                    ))}
                </div>
            ) : filteredProducts.length > 0 ? (
                <div key="grid" className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-6">
                    <AnimatePresence mode="popLayout">
                        {filteredProducts.map((p: Product) => (
                            <ArchiveProductCard key={p.id} product={p} onClick={(p) => router.push(`/shop/${p.slug || p.id}`)} />
                        ))}
                    </AnimatePresence>
                </div>
            ) : (
                <div key="empty" className="bg-white rounded-[3rem] p-20 text-center border-2 border-dashed border-medical-gray-200 flex flex-col items-center">
                    <div className="w-20 h-20 bg-medical-gray-50 rounded-full flex items-center justify-center text-medical-gray-300 mb-6">
                        <Search className="w-10 h-10" />
                    </div>
                    <h3 className="text-2xl font-black text-medical-gray-900 mb-2">محصولی یافت نشد!</h3>
                    <p className="text-medical-gray-400 max-w-sm mb-8 font-bold">با فیلترهای فعلی محصولی مطابق با نیاز شما پیدا نکردیم. لطفاً فیلترها را گسترده‌تر کنید یا دکمه ریست را بزنید.</p>
                    <button 
                        onClick={() => {
                            router.push('/shop');
                            setSelectedCategory("all");
                            setSelectedPet("all");
                            setActiveSymptoms([]);
                            setSearchQuery("");
                        }}
                        className="bg-canina-blue text-white px-8 py-3 rounded-xl font-black text-sm hover:scale-105 transition-transform shadow-lg shadow-canina-blue/20"
                    >
                        پاک کردن همه فیلترها و نمایش همه
                    </button>
                </div>
            )}
            </AnimatePresence>
          </main>

        </div>
      </div>
    </div>
  );
}