"use client";

import { useState, useEffect } from "react";
import { motion } from 'framer-motion';
import { ExternalLink, Github, Calendar, ArrowLeft, Search } from 'lucide-react';
import Link from 'next/link';

interface Project {
  id: number;
  title: string;
  description: string;
  content: string;
  tags: string[];
  featured: boolean;
  category: string;
  date: string;
  github?: string;
  live?: string;
  imageUrl?: string;
}

const ProjectsPage = () => {
  const [projects, setProjects] = useState<Project[]>([]);
  const [filteredProjects, setFilteredProjects] = useState<Project[]>([]);
  const [categories, setCategories] = useState<string[]>(["All"]);
  const [selectedCategory, setSelectedCategory] = useState("All");
  const [searchQuery, setSearchQuery] = useState("");
  const [mounted, setMounted] = useState(false);

  // Load projects from API
  useEffect(() => {
    const loadProjects = async () => {
      try {
        const response = await fetch('/api/projects?published=true');
        if (response.ok) {
          const data = await response.json();
          const loadedProjects = data.projects || [];
          setProjects(loadedProjects);
          
          // Extract unique categories
          const uniqueCategories = ["All", ...Array.from(new Set(loadedProjects.map((p: Project) => p.category))) as string[]];
          setCategories(uniqueCategories);
        }
      } catch (error) {
        if (process.env.NODE_ENV === 'development') {
          console.error('Error loading projects:', error);
        }
      }
    };

    loadProjects();
    setMounted(true);
  }, []);

  // Filter projects
  useEffect(() => {
    let result = projects;

    if (selectedCategory !== "All") {
      result = result.filter(project => project.category === selectedCategory);
    }

    if (searchQuery) {
      const query = searchQuery.toLowerCase();
      result = result.filter(project => 
        project.title.toLowerCase().includes(query) || 
        project.description.toLowerCase().includes(query) ||
        project.tags.some(tag => tag.toLowerCase().includes(query))
      );
    }

    setFilteredProjects(result);
  }, [projects, selectedCategory, searchQuery]);

  if (!mounted) {
    return null;
  }

  return (
    <div className="min-h-screen bg-[#fdfcf8] pt-32 pb-20">
      <div className="max-w-7xl mx-auto px-4">
        {/* Header */}
        <motion.div
          initial={{ opacity: 0, y: 30 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.8 }}
          className="mb-12"
        >
          <Link
            href="/"
            className="inline-flex items-center space-x-2 text-stone-500 hover:text-stone-800 transition-colors mb-8 group"
          >
            <ArrowLeft size={20} className="group-hover:-translate-x-1 transition-transform" />
            <span>Back to Home</span>
          </Link>
          
          <h1 className="text-5xl md:text-6xl font-black font-sans mb-6 text-stone-900 tracking-tight">
            My Projects
          </h1>
          <p className="text-xl text-stone-600 max-w-3xl font-light leading-relaxed">
            Explore my portfolio of projects, from web applications to mobile apps. 
            Each project showcases different skills and technologies.
          </p>
        </motion.div>

        {/* Filters & Search */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.8, delay: 0.2 }}
          className="mb-12 flex flex-col md:flex-row gap-6 justify-between items-start md:items-center"
        >
          {/* Categories */}
          <div className="flex flex-wrap gap-2">
            {categories.map((category) => (
              <button
                key={category}
                onClick={() => setSelectedCategory(category)}
                className={`px-5 py-2 rounded-full text-sm font-medium transition-all duration-200 border ${
                  selectedCategory === category
                    ? 'bg-stone-800 text-stone-50 border-stone-800 shadow-md'
                    : 'bg-white text-stone-600 border-stone-200 hover:bg-stone-50 hover:border-stone-300'
                }`}
              >
                {category}
              </button>
            ))}
          </div>

          {/* Search */}
          <div className="relative w-full md:w-64">
            <Search className="absolute left-3 top-1/2 -translate-y-1/2 text-stone-400" size={18} />
            <input
              type="text"
              placeholder="Search projects..."
              value={searchQuery}
              onChange={(e) => setSearchQuery(e.target.value)}
              className="w-full pl-10 pr-4 py-2 bg-white border border-stone-200 rounded-full text-stone-800 placeholder:text-stone-400 focus:outline-none focus:ring-2 focus:ring-stone-200 focus:border-stone-400 transition-all"
            />
          </div>
        </motion.div>

        {/* Projects Grid */}
        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8">
          {filteredProjects.map((project, index) => (
            <motion.div
              key={project.id}
              initial={{ opacity: 0, y: 30 }}
              animate={{ opacity: 1, y: 0 }}
              transition={{ duration: 0.6, delay: index * 0.1 }}
              whileHover={{ y: -8 }}
              className="group flex flex-col bg-white/40 backdrop-blur-xl rounded-2xl overflow-hidden border border-white/60 shadow-[0_4px_20px_rgba(0,0,0,0.02)] hover:shadow-[0_20px_40px_rgba(0,0,0,0.06)] transition-all duration-500"
            >
              {/* Image / Fallback / Cover Area */}
              <div className="relative aspect-[16/10] overflow-hidden bg-stone-100">
                {project.imageUrl ? (
                  <>
                    <img 
                      src={project.imageUrl}
                      alt={project.title}
                      className="w-full h-full object-cover transition-transform duration-1000 ease-out group-hover:scale-110"
                    />
                    <div className="absolute inset-0 bg-gradient-to-t from-stone-900/20 to-transparent opacity-0 group-hover:opacity-100 transition-opacity duration-500" />
                  </>
                ) : (
                  <div className="absolute inset-0 bg-stone-200 flex items-center justify-center overflow-hidden">
                    <div className="absolute inset-0 bg-gradient-to-br from-stone-300 via-stone-200 to-stone-300" />
                    <div className="absolute top-[-20%] left-[-10%] w-[70%] h-[70%] bg-white/20 rounded-full blur-3xl animate-pulse" />
                    <div className="absolute bottom-[-10%] right-[-5%] w-[60%] h-[60%] bg-stone-400/10 rounded-full blur-2xl" />
                    
                    <div className="relative z-10">
                      <span className="text-7xl font-serif font-black text-stone-800/10 group-hover:text-stone-800/20 transition-all duration-700 select-none tracking-tighter">
                        {project.title.charAt(0)}
                      </span>
                    </div>
                  </div>
                )}
                
                {/* Texture/Grain Overlay */}
                <div className="absolute inset-0 opacity-[0.03] pointer-events-none mix-blend-overlay bg-[url('https://grainy-gradients.vercel.app/noise.svg')]" />

                {/* Animated Shine Effect */}
                <div className="absolute inset-0 translate-x-[-100%] group-hover:translate-x-[100%] transition-transform duration-1000 ease-in-out bg-gradient-to-r from-transparent via-white/20 to-transparent skew-x-[-20deg] pointer-events-none" />

                {project.featured && (
                  <div className="absolute top-3 left-3 z-20">
                    <div className="px-3 py-1 bg-[#292524]/80 backdrop-blur-md text-[#fdfcf8] text-[10px] font-bold uppercase tracking-widest rounded-full shadow-sm border border-white/10">
                      Featured
                    </div>
                  </div>
                )}

                {/* Overlay Links */}
                <div className="absolute inset-0 bg-stone-900/40 opacity-0 group-hover:opacity-100 transition-opacity duration-500 ease-out flex items-center justify-center gap-4 backdrop-blur-[2px] z-20 pointer-events-none">
                  {project.github && (
                    <a
                      href={project.github}
                      target="_blank"
                      rel="noopener noreferrer"
                      className="p-3 bg-white text-stone-900 rounded-full hover:scale-110 transition-all duration-300 shadow-xl border border-white/50 pointer-events-auto"
                      aria-label="GitHub"
                      onClick={(e) => e.stopPropagation()}
                    >
                      <Github size={20} />
                    </a>
                  )}
                  {project.live && !project.title.toLowerCase().includes('kernel panic') && (
                    <a
                      href={project.live}
                      target="_blank"
                      rel="noopener noreferrer"
                      className="p-3 bg-white text-stone-900 rounded-full hover:scale-110 transition-all duration-300 shadow-xl border border-white/50 pointer-events-auto"
                      aria-label="Live Demo"
                      onClick={(e) => e.stopPropagation()}
                    >
                      <ExternalLink size={20} />
                    </a>
                  )}
                </div>
              </div>

              <div className="p-6 flex flex-col flex-1">
                {/* Stretched Link covering the whole card (including image area) */}
                <Link
                  href={`/projects/${project.title.toLowerCase().replace(/[^a-z0-9]+/g, '-')}`}
                  className="absolute inset-0 z-10"
                  aria-label={`View project ${project.title}`}
                />

                <div className="flex items-center justify-between mb-3">
                  <h3 className="text-xl font-bold text-stone-900 group-hover:text-stone-600 transition-colors">
                    {project.title}
                  </h3>
                  <div className="flex items-center space-x-2 text-stone-400 text-xs font-mono bg-white/50 px-2 py-1 rounded border border-stone-100">
                    <Calendar size={12} />
                    <span>{new Date(project.date).getFullYear()}</span>
                  </div>
                </div>

                <p className="text-stone-600 mb-6 leading-relaxed line-clamp-3 text-sm flex-1">
                  {project.description}
                </p>

                <div className="flex flex-wrap gap-2 mb-6">
                  {project.tags.slice(0, 4).map((tag) => (
                    <span
                      key={tag}
                      className="px-2.5 py-1 bg-white/60 border border-stone-100 text-stone-600 text-xs font-medium rounded-md"
                    >
                      {tag}
                    </span>
                  ))}
                  {project.tags.length > 4 && (
                    <span className="px-2 py-1 text-stone-400 text-xs">+ {project.tags.length - 4}</span>
                  )}
                </div>

                <div className="mt-auto pt-4 border-t border-stone-100 flex items-center justify-between relative z-20">
                   <div className="flex gap-3">
                      {project.github && (
                        <a 
                          href={project.github} 
                          target="_blank" 
                          rel="noopener noreferrer" 
                          className="text-stone-400 hover:text-stone-900 transition-colors relative z-20 hover:scale-110" 
                          onClick={(e) => e.stopPropagation()}
                        >
                          <Github size={18} />
                        </a>
                      )}
                      {project.live && !project.title.toLowerCase().includes('kernel panic') && (
                         <a 
                           href={project.live} 
                           target="_blank" 
                           rel="noopener noreferrer" 
                           className="text-stone-400 hover:text-stone-900 transition-colors relative z-20 hover:scale-110" 
                           onClick={(e) => e.stopPropagation()}
                         >
                           <ExternalLink size={18} />
                         </a>
                      )}
                   </div>
                </div>
              </div>
            </motion.div>
          ))}
        </div>

        {filteredProjects.length === 0 && (
            <div className="text-center py-20">
                <p className="text-stone-500 text-lg">No projects found matching your criteria.</p>
                <button 
                    onClick={() => {setSelectedCategory("All"); setSearchQuery("");}}
                    className="mt-4 text-stone-800 font-medium hover:underline"
                >
                    Clear filters
                </button>
            </div>
        )}
      </div>
    </div>
  );
};

export default ProjectsPage;