'use client';

import { useState, useEffect } from 'react';
import { ImageIcon, X, Search, CheckCircle2 } from 'lucide-react';
import Link from 'next/link';
import { databases, APPWRITE_ALMEIRA_CONFIG, endpoint, projectId } from '@/lib/appwrite';
import { Query } from 'appwrite';

interface MediaPickerMiniProps {
  value: string;
  onChange: (fileId: string) => void;
  label: string;
}

export const MediaPickerMini = ({ value, onChange, label }: MediaPickerMiniProps) => {
  const [isOpen, setIsOpen] = useState(false);
  const [mediaItems, setMediaItems] = useState<any[]>([]);
  const [searchTerm, setSearchTerm] = useState('');
  const [isLoading, setIsLoading] = useState(false);

  useEffect(() => {
    if (isOpen) {
      fetchMedia();
    }
  }, [isOpen]);

  const fetchMedia = async (search = '') => {
    setIsLoading(true);
    try {
      // We use the client-side databases instance for browsing media
      const queries = [
          Query.limit(20), // Standard limit for preview
          Query.orderDesc('$createdAt')
      ];

      if (search) {
        queries.push(Query.contains('titulo', search));
      }

      const res = await databases.listDocuments(
        APPWRITE_ALMEIRA_CONFIG.databaseId,
        'media',
        queries
      );
      setMediaItems(res.documents);
    } catch (error) {
      console.error('Error fetching media:', error);
    } finally {
      setIsLoading(false);
    }
  };

  // Debounced search
  useEffect(() => {
    if (!isOpen) return;
    const timer = setTimeout(() => {
      fetchMedia(searchTerm);
    }, 500);
    return () => clearTimeout(timer);
  }, [searchTerm, isOpen]);

  const getImageUrl = (fileId: string) => {
    return `${endpoint}/storage/buckets/media/files/${fileId}/view?project=${projectId}&width=200&height=200&gravity=center`;
  };

  const filteredItems = mediaItems;

  return (
    <div className="space-y-2">
      <div className="flex justify-between items-center">
        <label className="text-[10px] font-black uppercase tracking-widest text-slate-400 flex items-center gap-1">
          <ImageIcon size={12} className="text-purple-500" /> {label}
        </label>
        {value && (
            <button 
                type="button" 
                onClick={() => onChange('')}
                className="text-[9px] font-bold text-pink-500 hover:text-pink-400 transition-colors uppercase"
            >
                Quitar
            </button>
        )}
      </div>

      <div 
        onClick={() => setIsOpen(true)}
        className={`relative aspect-video rounded-2xl border-2 border-dashed transition-all cursor-pointer flex flex-col items-center justify-center gap-2 overflow-hidden bg-slate-950 group ${
            value ? 'border-cyan-500/50 hover:border-cyan-400' : 'border-slate-800 hover:border-slate-700'
        }`}
      >
        {value ? (
            <>
                <img 
                    src={`${endpoint}/storage/buckets/media/files/${value}/view?project=${projectId}`} 
                    alt="Selected" 
                    className="w-full h-full object-cover"
                />
                <div className="absolute inset-0 bg-slate-900/60 opacity-0 group-hover:opacity-100 transition-opacity flex items-center justify-center">
                    <span className="bg-white/10 backdrop-blur-md px-4 py-2 rounded-full text-[10px] font-black uppercase tracking-[0.2em] text-white border border-white/20 shadow-xl">
                        Cambiar Imagen
                    </span>
                </div>
            </>
        ) : (
            <>
                <div className="p-3 bg-slate-900 rounded-2xl text-slate-600 group-hover:text-cyan-500 transition-colors border border-slate-800 group-hover:border-cyan-500/30">
                    <ImageIcon size={24} />
                </div>
                <span className="text-[10px] font-black text-slate-500 uppercase tracking-widest">Seleccionar Medio</span>
            </>
        )}
      </div>

      {/* Hidden input to carry the value in the form */}
      <input type="hidden" name="imagen_destacada_id" value={value || ''} />

      {/* Modal */}
      {isOpen && (
        <div className="fixed inset-0 z-[100] flex items-center justify-center p-4 md:p-8 animate-in fade-in duration-200">
          <div className="absolute inset-0 bg-slate-950/80 backdrop-blur-md" onClick={() => setIsOpen(false)}></div>
          
          <div className="relative w-full max-w-4xl max-h-[80vh] bg-slate-900 border border-slate-800 rounded-3xl shadow-2xl flex flex-col overflow-hidden animate-in zoom-in-95 duration-200">
            {/* Modal Header */}
            <div className="p-6 border-b border-slate-800 flex items-center justify-between bg-slate-900/50">
              <div className="flex items-center gap-3">
                <div className="p-2 bg-purple-500/10 rounded-xl text-purple-400 border border-purple-500/20">
                    <ImageIcon size={20} />
                </div>
                <div>
                    <h3 className="text-lg font-black uppercase tracking-tighter text-white">Biblioteca de Medios</h3>
                    <p className="text-[10px] font-bold text-slate-500 uppercase tracking-widest">Selecciona una imagen para esta publicación</p>
                </div>
              </div>
              <button 
                onClick={() => setIsOpen(false)}
                className="p-2 hover:bg-slate-800 rounded-xl text-slate-500 hover:text-white transition-all"
              >
                <X size={20} />
              </button>
            </div>

            {/* Modal Search */}
            <div className="p-6 pb-2">
                <div className="relative group">
                    <Search className="absolute left-4 top-1/2 -translate-y-1/2 text-slate-500 group-focus-within:text-cyan-500 transition-colors" size={18} />
                    <input 
                        type="text" 
                        placeholder="Buscar por título..." 
                        value={searchTerm}
                        onChange={(e) => setSearchTerm(e.target.value)}
                        className="w-full bg-slate-950 border border-slate-800 rounded-2xl pl-12 pr-6 py-4 text-white focus:outline-none focus:border-cyan-500 transition-all font-medium"
                    />
                </div>
            </div>

            {/* Modal Content */}
            <div className="flex-1 overflow-y-auto p-6 pt-2 custom-scrollbar">
              {isLoading ? (
                <div className="h-64 flex flex-col items-center justify-center gap-4">
                  <div className="w-12 h-12 border-4 border-cyan-500/20 border-t-cyan-500 rounded-full animate-spin"></div>
                  <span className="text-xs font-black uppercase tracking-widest text-slate-500">Cargando Galería...</span>
                </div>
              ) : filteredItems.length > 0 ? (
                <div className="grid grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-4">
                  {filteredItems.map((item) => (
                    <div 
                      key={item.$id}
                      onClick={() => {
                        onChange(item.file_id);
                        setIsOpen(false);
                      }}
                      className={`group relative aspect-square rounded-2xl border-2 transition-all cursor-pointer overflow-hidden bg-slate-950 ${
                        value === item.file_id ? 'border-cyan-500 shadow-xl shadow-cyan-500/20' : 'border-slate-800 hover:border-slate-600 shadow-lg'
                      }`}
                    >
                      <img 
                        src={getImageUrl(item.file_id)} 
                        alt={item.titulo} 
                        title={item.titulo}
                        className="w-full h-full object-cover transition-transform group-hover:scale-110"
                        loading="lazy"
                      />
                      <div className="absolute inset-0 bg-gradient-to-t from-slate-950/80 via-transparent to-transparent opacity-0 group-hover:opacity-100 transition-opacity p-3 flex flex-col justify-end">
                        <span className="text-[10px] font-black text-white uppercase truncate drop-shadow-lg">{item.titulo}</span>
                      </div>
                      {value === item.file_id && (
                        <div className="absolute top-2 right-2 bg-cyan-500 text-white rounded-full p-1 shadow-lg">
                          <CheckCircle2 size={16} />
                        </div>
                      )}
                    </div>
                  ))}
                </div>
              ) : (
                <div className="h-64 flex flex-col items-center justify-center text-slate-500 border-2 border-dashed border-slate-800 rounded-3xl gap-2">
                   <p className="font-bold uppercase tracking-widest text-sm text-slate-400">Sin Resultados</p>
                   <p className="text-[10px]">No encontramos imágenes con ese título.</p>
                </div>
              )}
            </div>

            {/* Modal Footer */}
            <div className="p-6 bg-slate-950/50 border-t border-slate-800 flex justify-between items-center text-slate-500">
                <span className="text-[10px] font-bold uppercase tracking-widest">
                    {filteredItems.length} Elementos Disponibles
                </span>
                <Link 
                    href="/dashboard/media/new" 
                    className="text-[10px] font-black uppercase tracking-widest bg-slate-800 hover:bg-slate-700 text-white px-4 py-2 rounded-lg transition-all border border-slate-700"
                >
                    Subir Nuevo Archivo
                </Link>
            </div>
          </div>
        </div>
      )}
    </div>
  );
};