JavaScript में क्लस्टरिंग के साथ रियल एस्टेट प्रॉपर्टी मैप बनाएं

const properties = {
  type: "FeatureCollection",
  features: [
    {
      type: "Feature",
      geometry: { type: "Point", coordinates: [4.8952, 52.3702] },
      properties: {
        id: "prop-001",
        price: 485000,
        bedrooms: 3,
        sqm: 112,
        address: "Keizersgracht 142, Amsterdam",
        type: "apartment",
        status: "for-sale"
      }
    },
    {
      type: "Feature",
      geometry: { type: "Point", coordinates: [4.9123, 52.3601] },
      properties: {
        id: "prop-002",
        price: 1250,
        bedrooms: 2,
        sqm: 78,
        address: "Sarphatistraat 58, Amsterdam",
        type: "apartment",
        status: "for-rent"
      }
    },
    {
      type: "Feature",
      geometry: { type: "Point", coordinates: [4.8801, 52.3780] },
      properties: {
        id: "prop-003",
        price: 720000,
        bedrooms: 4,
        sqm: 195,
        address: "Herengracht 380, Amsterdam",
        type: "house",
        status: "for-sale"
      }
    }
  ]
};

import mapmetricsgl from '@mapmetrics/mapmetrics-gl';
import '@mapmetrics/mapmetrics-gl/dist/mapmetrics-gl.css';

const map = new mapmetricsgl.Map({
  container: 'map',
  style: 'https://gateway.mapmetrics-atlas.net/styles/?fileName=YOUR_STYLE_ID/style.json&token=YOUR_API_KEY',
  center: [4.9041, 52.3676],
  zoom: 13
});

map.on('load', () => {
  map.addSource('properties', {
    type: 'geojson',
    data: properties,
    cluster: true,
    clusterMaxZoom: 14,
    clusterRadius: 60
  });

  // Cluster circles, size scales with listing count
  map.addLayer({
    id: 'clusters',
    type: 'circle',
    source: 'properties',
    filter: ['has', 'point_count'],
    paint: {
      'circle-color': '#2563EB',
      'circle-radius': [
        'step', ['get', 'point_count'],
        22, 5, 30, 20, 38
      ],
      'circle-stroke-width': 3,
      'circle-stroke-color': '#ffffff'
    }
  });

  // Cluster count labels
  map.addLayer({
    id: 'cluster-label',
    type: 'symbol',
    source: 'properties',
    filter: ['has', 'point_count'],
    layout: {
      'text-field': '{point_count_abbreviated}',
      'text-font': ['DIN Offc Pro Medium', 'Arial Unicode MS Bold'],
      'text-size': 14
    },
    paint: { 'text-color': '#ffffff' }
  });

  // Individual property markers, white circle with price text
  map.addLayer({
    id: 'property-price',
    type: 'symbol',
    source: 'properties',
    filter: ['!', ['has', 'point_count']],
    layout: {
      'text-field': [
        'concat',
        '€',
        ['to-string', ['round', ['/', ['get', 'price'], 1000]]],
        'k'
      ],
      'text-font': ['DIN Offc Pro Bold', 'Arial Unicode MS Bold'],
      'text-size': 12
    },
    paint: {
      'text-color': '#1e293b',
      'text-halo-color': '#ffffff',
      'text-halo-width': 2
    }
  });
});

// Zoom into clicked cluster
map.on('click', 'clusters', (e) => {
  const [feature] = map.queryRenderedFeatures(e.point, { layers: ['clusters'] });
  map.getSource('properties').getClusterExpansionZoom(
    feature.properties.cluster_id,
    (err, zoom) => {
      if (!err) map.easeTo({ center: feature.geometry.coordinates, zoom });
    }
  );
});

// Detail popup for individual listing
map.on('click', 'property-price', (e) => {
  const { address, price, bedrooms, sqm, status, id } = e.features[0].properties;
  const coords = e.features[0].geometry.coordinates.slice();
  const formattedPrice = status === 'for-rent'
    ? `€${price.toLocaleString()}/mo`
    : `€${price.toLocaleString()}`;

  new mapmetricsgl.Popup({ offset: 10 })
    .setLngLat(coords)
    .setHTML(`
      <div style="min-width:200px">
        <strong style="font-size:15px">${formattedPrice}</strong>
        <p style="margin:4px 0">${address}</p>
        <p style="margin:4px 0;color:#64748b">${bedrooms} bed · ${sqm} m²</p>
        <a href="/listings/${id}" style="color:#2563EB;font-weight:600">View listing →</a>
      </div>
    `)
    .addTo(map);
});

// Change cursor on hover
map.on('mouseenter', 'property-price', () => { map.getCanvas().style.cursor = 'pointer'; });
map.on('mouseleave', 'property-price', () => { map.getCanvas().style.cursor = ''; });
map.on('mouseenter', 'clusters',       () => { map.getCanvas().style.cursor = 'pointer'; });
map.on('mouseleave', 'clusters',       () => { map.getCanvas().style.cursor = ''; });

function applyPriceFilter(min, max) {
  const filter = ['all',
    ['!', ['has', 'point_count']],
    ['>=', ['get', 'price'], min],
    ['<=', ['get', 'price'], max]
  ];
  map.setFilter('property-price', filter);
}

// Wire up range inputs
const minInput = document.getElementById('price-min');
const maxInput = document.getElementById('price-max');

function onRangeChange() {
  applyPriceFilter(Number(minInput.value), Number(maxInput.value));
}

minInput.addEventListener('input', onRangeChange);
maxInput.addEventListener('input', onRangeChange);

async function searchArea(query) {
  const url = new URL('https://gateway.mapmetrics-atlas.net/forward-geocode/');
  url.searchParams.set('text', query);
  url.searchParams.set('token', 'YOUR_API_KEY');
  url.searchParams.set('size', '1');

  const res  = await fetch(url);
  const data = await res.json();

  if (!data.features.length) return;

  const [lng, lat] = data.features[0].geometry.coordinates;
  map.flyTo({ center: [lng, lat], zoom: 13 });
}

document.getElementById('area-search').addEventListener('keydown', (e) => {
  if (e.key === 'Enter') searchArea(e.target.value.trim());
});

import { useEffect, useRef, useState } from 'react';
import mapmetricsgl from '@mapmetrics/mapmetrics-gl';
import '@mapmetrics/mapmetrics-gl/dist/mapmetrics-gl.css';

export function PropertyMap({ listings, apiKey }) {
  const containerRef = useRef(null);
  const mapRef       = useRef(null);
  const [priceRange, setPriceRange] = useState([0, 2000000]);

  useEffect(() => {
    const map = new mapmetricsgl.Map({
      container: containerRef.current,
      style: `https://gateway.mapmetrics-atlas.net/styles/?fileName=YOUR_STYLE_ID/style.json&token=${apiKey}`,
      center: [4.9041, 52.3676],
      zoom: 13
    });
    mapRef.current = map;

    map.on('load', () => {
      map.addSource('properties', {
        type: 'geojson',
        data: { type: 'FeatureCollection', features: listings },
        cluster: true,
        clusterMaxZoom: 14,
        clusterRadius: 60
      });
      // Add cluster, cluster-label, property-price layers (see above)
      // Add click handlers (see above)
    });

    return () => map.remove();
  }, [apiKey]);

  // Update filter when price range slider changes
  useEffect(() => {
    const map = mapRef.current;
    if (!map || !map.getLayer('property-price')) return;
    map.setFilter('property-price', [
      'all',
      ['!', ['has', 'point_count']],
      ['>=', ['get', 'price'], priceRange[0]],
      ['<=', ['get', 'price'], priceRange[1]]
    ]);
  }, [priceRange]);

  return (
    <div>
      <div style={{ padding: '12px 0', display: 'flex', gap: 12 }}>
        <label>
          Min €
          <input type="range" min={0} max={2000000} step={10000}
            value={priceRange[0]}
            onChange={e => setPriceRange([+e.target.value, priceRange[1]])} />
        </label>
        <label>
          Max €
          <input type="range" min={0} max={2000000} step={10000}
            value={priceRange[1]}
            onChange={e => setPriceRange([priceRange[0], +e.target.value])} />
        </label>
      </div>
      <div ref={containerRef} style={{ width: '100%', height: '600px' }} />
    </div>
  );
}