1 files changed, 206 insertions, 0 deletions
diff --git a/src/Geshem.js b/src/Geshem.js
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+++ b/src/Geshem.js
@@ -0,0 +1,206 @@
+import React, { Component } from 'react';
+import Slider from 'rc-slider';
+import { DateTime } from 'luxon';
+import axios from 'axios';
+import mapboxgl from 'mapbox-gl';
+
+import './Geshem.css';
+import 'mapbox-gl/dist/mapbox-gl.css';
+import 'rc-slider/assets/index.css';
+
+mapboxgl.accessToken = 'pk.eyJ1IjoieXV2YWRtIiwiYSI6ImNpcnMxbzBuaTAwZWdoa25oczlzZmkwbHcifQ.UHtLngbKm9O8945pJm23Nw';
+
+const IMGS_BASE_URL = 'https://imgs.geshem.space/'
+
+
+class Geshem extends Component {
+
+  constructor(props) {
+    super(props);
+    this.state = {
+      mapLoaded: false,
+      imgs: null,
+      res: 280,
+      slider: 9,
+      lng: 35,
+      lat: 31.9,
+      zoom: 6.3,
+      rasterCoords: {
+        140: [
+          [33.35317413, 33.27232471],
+          [36.32243686, 33.27232471],
+          [36.32243686, 30.72293428],
+          [33.35317413, 30.72293428]
+        ],
+        280: [
+          [31.93095218, 34.5156862],
+          [37.86644267, 34.5156862],
+          [37.86644267, 29.42911589],
+          [31.93095218, 29.42911589]
+        ]
+      },
+    };
+  }
+
+  loadSources() {
+    const { imgs } = this.state;
+    let i = 0;
+    while (i < imgs['140'].length) {
+      this.addRadarSource('140', i, imgs['140'][i])
+      this.addRadarLayer('140', i++)
+    }
+    i = 0;
+    while (i < imgs['280'].length) {
+      this.addRadarSource('280', i, imgs['280'][i])
+      this.addRadarLayer('280', i++)
+    }
+    this.showRadarLayer('280', 9)
+  }
+
+  loadRadarData() {
+    axios({
+      url: IMGS_BASE_URL + 'imgs.json',
+      method: 'get',
+    }).then((res) => {
+      this.setState({
+        imgs: res.data
+      })
+      if (this.state.mapLoaded) {
+        this.loadSources();
+      }
+    }).catch(function(error) {
+      console.log(error)
+    })
+  }
+
+  addRadarSource(res, i, url) {
+    this.map.addSource(`radar-${res}-${i}`, {
+      type: 'image',
+      url: IMGS_BASE_URL + url,
+      coordinates: this.state.rasterCoords[res]
+    })
+  }
+
+  addRadarLayer(res, i) {
+    this.map.addLayer({
+      id: `radar-${res}-${i}`,
+      source: `radar-${res}-${i}`,
+      type: 'raster',
+      paint: {
+        'raster-opacity': 0,
+        'raster-opacity-transition': {
+          'duration': 0
+        }
+      }
+    })
+  }
+
+  showRadarLayer(res, i) {
+    this.map.setPaintProperty(`radar-${res}-${i}`, 'raster-opacity', 0.85);
+  }
+
+  hideRadarLayer(res, i) {
+    this.map.setPaintProperty(`radar-${res}-${i}`, 'raster-opacity', 0);
+  }
+
+  removeRadarLayer(res, i) {
+    this.map.removeLayer(`radar-${res}-${i}`)
+  }
+
+  onChangeSlider(val) {
+    this.hideRadarLayer(this.state.res, this.state.slider);
+    this.setState({ slider: val });
+    this.showRadarLayer(this.state.res, val);
+  }
+
+  initMap() {
+    const { lng, lat, zoom } = this.state;
+
+    this.map = new mapboxgl.Map({
+      container: this.mapContainer,
+      style: 'mapbox://styles/mapbox/dark-v9',
+      maxZoom: 10,
+      minZoom: 5,
+      center: [lng, lat],
+      zoom: zoom,
+      hash: false
+    });
+
+    this.map.on('style.load', () => {
+      this.setState({
+        mapLoaded: true
+      });
+      if (this.state.imgs !== null) {
+        this.loadSources();
+      }
+    });
+
+    this.map.on('zoom', () => {
+      const zoomIn = this.map.getZoom() > 7;
+      const from = zoomIn ? '280' : '140';
+      const to = zoomIn ? '140' : '280';
+      if (to !== this.state.res) {
+        this.hideRadarLayer(from, this.state.slider);
+        this.showRadarLayer(to, this.state.slider);
+        this.setState({ res: to });
+      }
+    });
+  }
+
+  componentDidMount() {
+    this.loadRadarData();
+    this.initMap();
+  }
+
+  getDateTime() {
+    const {imgs, res, slider} = this.state;
+
+    if (imgs === null) {
+      return null;
+    }
+
+    const ds = imgs[res][slider].substr(5, 13);
+    return DateTime.fromFormat(ds, 'yyyyMMdd/HHmm', {zone: 'utc'}).setZone('Asia/Jerusalem');
+  }
+
+  render() {
+    const handleStyle = {
+      height: 40,
+      width: 40,
+      border: 0,
+      marginTop: -10,
+      marginLeft: -20,
+      boxShadow: '.5px .5px 2px 1px rgba(0,0,0,.32)'
+    }
+
+    const railStyle = {
+      height: 20,
+      backgroundColor: '#3498db'
+    }
+
+    const trackStyle={
+      display: 'none'
+    }
+
+    const datetime = this.getDateTime();
+    console.log(datetime);
+    const date = datetime ? datetime.toFormat('y-MM-dd') : '';
+    const time = datetime ? datetime.toFormat('HH:mm') : '';
+
+    return (
+      <div id="geshem">
+        <div id="map" ref={el => this.mapContainer = el} className="absolute top right left bottom" />
+        <div id="datetime">
+          <div id="date">{ date }</div>
+          <div id="time">{ time }</div>
+        </div>
+        <div id="slider">
+          <Slider mix={0} max={9} defaultValue={this.state.slider} handleStyle={handleStyle}
+            railStyle={railStyle} trackStyle={trackStyle} onChange={(val) => this.onChangeSlider(val)}/>
+        </div>
+      </div>
+    );
+  }
+}
+
+export default Geshem;