From e9f0913d2b1b66764931b6c1235877a44e72890b Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sat, 24 Oct 2020 16:42:29 -0700
Subject: Refactor map implementation

---
 modern/src/map/PositionsMap.js | 112 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 modern/src/map/PositionsMap.js

(limited to 'modern/src/map/PositionsMap.js')

diff --git a/modern/src/map/PositionsMap.js b/modern/src/map/PositionsMap.js
new file mode 100644
index 0000000..6a7a68b
--- /dev/null
+++ b/modern/src/map/PositionsMap.js
@@ -0,0 +1,112 @@
+import React, { useEffect } from 'react';
+import ReactDOM from 'react-dom';
+import mapboxgl from 'mapbox-gl';
+import { Provider, useSelector } from 'react-redux';
+
+import { map } from './Map';
+import store from '../store';
+import { useHistory } from 'react-router-dom';
+import StatusView from './StatusView';
+
+const PositionsMap = () => {
+  const id = 'positions';
+
+  const history = useHistory();
+
+  const createFeature = (state, position) => {
+    const device = state.devices.items[position.deviceId] || null;
+    return {
+      deviceId: position.deviceId,
+      name: device ? device.name : '',
+      category: device && device.category || 'default',
+    }
+  };
+
+  const positions = useSelector(state => ({
+    type: 'FeatureCollection',
+    features: Object.values(state.positions.items).map(position => ({
+      type: 'Feature',
+      geometry: {
+        type: 'Point',
+        coordinates: [position.longitude, position.latitude]
+      },
+      properties: createFeature(state, position),
+    })),
+  }));
+
+  const onMouseEnter = () => map.getCanvas().style.cursor = 'pointer';
+  const onMouseLeave = () => map.getCanvas().style.cursor = '';
+
+  const onClick = event => {
+    const feature = event.features[0];
+    let coordinates = feature.geometry.coordinates.slice();
+    while (Math.abs(event.lngLat.lng - coordinates[0]) > 180) {
+      coordinates[0] += event.lngLat.lng > coordinates[0] ? 360 : -360;
+    }
+
+    const placeholder = document.createElement('div');
+    ReactDOM.render(
+      <Provider store={store}>
+        <StatusView deviceId={feature.properties.deviceId} onShowDetails={positionId => history.push(`/position/${positionId}`)} />
+      </Provider>,
+      placeholder
+    );
+
+    new mapboxgl.Popup({
+      offset: 25,
+      anchor: 'top'
+    })
+      .setDOMContent(placeholder)
+      .setLngLat(coordinates)
+      .addTo(map);
+  };
+
+  useEffect(() => {
+    map.addSource(id, {
+      'type': 'geojson',
+      'data': positions,
+    });
+    map.addLayer({
+      'id': id,
+      'type': 'symbol',
+      'source': id,
+      'layout': {
+        'icon-image': '{category}',
+        'icon-allow-overlap': true,
+        'text-field': '{name}',
+        'text-allow-overlap': true,
+        'text-anchor': 'bottom',
+        'text-offset': [0, -2],
+        'text-font': ['Roboto Regular'],
+        'text-size': 12,
+      },
+      'paint': {
+        'text-halo-color': 'white',
+        'text-halo-width': 1,
+      },
+    });
+
+    map.on('mouseenter', id, onMouseEnter);
+    map.on('mouseleave', id, onMouseLeave);
+    map.on('click', id, onClick);
+
+    return () => {
+      Array.from(map.getContainer().getElementsByClassName('mapboxgl-popup')).forEach(el => el.remove());
+
+      map.off('mouseenter', id, onMouseEnter);
+      map.off('mouseleave', id, onMouseLeave);
+      map.off('click', id, onClick);
+
+      map.removeLayer(id);
+      map.removeSource(id);
+    };
+  }, []);
+
+  useEffect(() => {
+    map.getSource(id).setData(positions);
+  }, [positions]);
+
+  return null;
+}
+
+export default PositionsMap;
-- 
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