'use client'

import { useEffect, useRef, useState } from 'react'
import L from 'leaflet'
import 'leaflet/dist/leaflet.css'

interface MapPickerProps {
  onSelect: (lat: number, lng: number, address?: string) => void
  onClose: () => void
}

export default function MapPicker({ onSelect, onClose }: MapPickerProps) {
  const mapRef = useRef<HTMLDivElement>(null)
  const markerRef = useRef<L.Marker | null>(null)
  const mapInstanceRef = useRef<L.Map | null>(null)
  const [lat, setLat] = useState(55.7558)
  const [lng, setLng] = useState(37.6173)
  const [loading, setLoading] = useState(false)

  useEffect(() => {
    if (!mapRef.current || mapInstanceRef.current) return

    const map = L.map(mapRef.current, {
      zoomControl: false,
      attributionControl: false,
    }).setView([lat, lng], 12)

    L.tileLayer('https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png', {
      maxZoom: 19,
    }).addTo(map)

    map.on('click', (e) => {
      const newLat = e.latlng.lat
      const newLng = e.latlng.lng
      setLat(newLat)
      setLng(newLng)
      if (markerRef.current) markerRef.current.remove()
      markerRef.current = L.marker([newLat, newLng]).addTo(map)
    })

    mapInstanceRef.current = map

    return () => {
      map.remove()
      mapInstanceRef.current = null
    }
  }, [])

  const handleConfirm = async () => {
    setLoading(true)
    try {
      const res = await fetch(
        `https://nominatim.openstreetmap.org/reverse?lat=${lat}&lon=${lng}&format=json&accept-language=ru`
      )
      const data = await res.json()
      onSelect(lat, lng, data.display_name || undefined)
    } catch {
      onSelect(lat, lng)
    }
  }

  return (
    <div className="fixed inset-0 z-[60] flex flex-col bg-black/80 backdrop-blur-sm">
      <div ref={mapRef} className="flex-1" />
      <div className="flex items-center justify-between bg-[#1e293b] px-4 py-3">
        <div className="text-sm text-white/60">
          {lat.toFixed(6)}, {lng.toFixed(6)}
        </div>
        <div className="flex gap-3">
          <button
            onClick={onClose}
            className="rounded-lg bg-white/10 px-4 py-2 text-sm text-white hover:bg-white/20 transition"
          >
            Отмена
          </button>
          <button
            onClick={handleConfirm}
            disabled={loading}
            className="rounded-lg bg-green-600 px-4 py-2 text-sm text-white hover:bg-green-500 transition disabled:opacity-50"
          >
            {loading ? 'Загрузка...' : 'Подтвердить'}
          </button>
        </div>
      </div>
    </div>
  )
}