'use client';

import { useState, useEffect, useRef } from 'react';

interface AddressSuggestion {
  display_name: string;
  lat: string;
  lon: string;
}

interface AddressAutocompleteProps {
  value: string;
  onChange: (address: string) => void;
  placeholder?: string;
  required?: boolean;
}

export default function AddressAutocomplete({
  value,
  onChange,
  placeholder = 'Rechercher une adresse...',
  required = false,
}: AddressAutocompleteProps) {
  const [suggestions, setSuggestions] = useState<AddressSuggestion[]>([]);
  const [showSuggestions, setShowSuggestions] = useState(false);
  const [loading, setLoading] = useState(false);
  const wrapperRef = useRef<HTMLDivElement>(null);
  const timeoutRef = useRef<NodeJS.Timeout | null>(null);

  useEffect(() => {
    const handleClickOutside = (event: MouseEvent) => {
      if (wrapperRef.current && !wrapperRef.current.contains(event.target as Node)) {
        setShowSuggestions(false);
      }
    };

    document.addEventListener('mousedown', handleClickOutside);
    return () => {
      document.removeEventListener('mousedown', handleClickOutside);
      if (timeoutRef.current) {
        clearTimeout(timeoutRef.current);
      }
    };
  }, []);

  const searchAddresses = async (query: string) => {
    if (query.length < 3) {
      setSuggestions([]);
      return;
    }

    setLoading(true);
    try {
      // Annuler la requête précédente si elle existe
      if (timeoutRef.current) {
        clearTimeout(timeoutRef.current);
      }

      // Attendre un peu avant de faire la requête (debounce)
      timeoutRef.current = setTimeout(async () => {
        try {
          const response = await fetch(
            `https://nominatim.openstreetmap.org/search?format=json&q=${encodeURIComponent(query)}&limit=5&addressdetails=1&countrycodes=fr`,
            {
              headers: {
                'User-Agent': 'MAD Platform',
                'Accept-Language': 'fr-FR,fr;q=0.9',
              },
            }
          );

          if (response.ok) {
            const data = await response.json();
            setSuggestions(data);
            setShowSuggestions(true);
          }
        } catch (error) {
          console.error('Erreur lors de la recherche d\'adresses:', error);
        } finally {
          setLoading(false);
        }
      }, 300);
    } catch (error) {
      console.error('Erreur:', error);
      setLoading(false);
    }
  };

  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    const newValue = e.target.value;
    onChange(newValue);
    searchAddresses(newValue);
  };

  const handleSelectSuggestion = (suggestion: AddressSuggestion) => {
    onChange(suggestion.display_name);
    setShowSuggestions(false);
    setSuggestions([]);
  };

  return (
    <div className="relative" ref={wrapperRef}>
      <div className="relative">
        <input
          type="text"
          value={value}
          onChange={handleInputChange}
          onFocus={() => {
            if (suggestions.length > 0) {
              setShowSuggestions(true);
            }
          }}
          placeholder={placeholder}
          required={required}
          className="w-full px-4 py-2.5 border border-gray-300 rounded-lg text-gray-900 placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-lblue focus:border-transparent"
        />
        {loading && (
          <div className="absolute right-3 top-1/2 transform -translate-y-1/2">
            <svg className="animate-spin h-5 w-5 text-gray-400" fill="none" viewBox="0 0 24 24">
              <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
              <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
            </svg>
          </div>
        )}
      </div>

      {showSuggestions && suggestions.length > 0 && (
        <div className="absolute z-20 w-full mt-1 bg-white border border-gray-200 rounded-lg shadow-lg max-h-60 overflow-y-auto">
          {suggestions.map((suggestion, index) => (
            <button
              key={index}
              type="button"
              onClick={() => handleSelectSuggestion(suggestion)}
              className="w-full px-4 py-3 text-left hover:bg-gray-50 flex items-start gap-3 border-b border-gray-100 last:border-b-0 transition-colors"
            >
              <svg className="w-5 h-5 text-gray-400 mt-0.5 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z" />
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 11a3 3 0 11-6 0 3 3 0 016 0z" />
              </svg>
              <div className="flex-1 min-w-0">
                <div className="text-sm font-medium text-gray-900 truncate">
                  {suggestion.display_name.split(',').slice(0, 2).join(', ')}
                </div>
                <div className="text-xs text-gray-500 mt-0.5 truncate">
                  {suggestion.display_name}
                </div>
              </div>
            </button>
          ))}
        </div>
      )}
    </div>
  );
}