From 0a573cc3e918e751f5a9e02f5877f7786636539d Mon Sep 17 00:00:00 2001
From: ivanshen <iwshen11@gmail.com>
Date: Tue, 5 Mar 2019 15:58:03 -0500
Subject: Added live update functionality (feat 8)

---
 web/public/javascripts/map.js | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

(limited to 'web/public')

diff --git a/web/public/javascripts/map.js b/web/public/javascripts/map.js
index 190307d..5739dec 100644
--- a/web/public/javascripts/map.js
+++ b/web/public/javascripts/map.js
@@ -11,7 +11,6 @@ L.tileLayer('https://stamen-tiles-{s}.a.ssl.fastly.net/toner-lite/{z}/{x}/{y}{r}
 	maxZoom: 18,
 	ext: 'png'
 }).addTo(map);
-
 L.geoJson(points, {
 	pointToLayer: function (feature, latlng) {
 		//return L.circleMarker(latlng);
@@ -21,3 +20,34 @@ L.geoJson(points, {
 	// layer.feature.geometry gives you access to all the fields
 	return "<p>" + JSON.stringify(layer.feature.geometry) + "</p>";
 }).addTo(map)
+if (!!window.EventSource) {
+	var source = new EventSource('/stream');
+  
+	source.addEventListener('message', function(e) {
+		var data = JSON.parse(e.data);
+		if (data.coordinates) {
+			points.push(data);
+			L.geoJson(points, {
+				pointToLayer: function (feature, latlng) {
+					//return L.circleMarker(latlng);
+					return L.marker(latlng);
+				}
+			}).bindPopup(function (layer) {
+				// layer.feature.geometry gives you access to all the fields
+				return "<p>" + JSON.stringify(layer.feature.geometry) + "</p>";
+			}).addTo(map)
+		}
+	}, false)
+  
+	source.addEventListener('open', function(e) {
+	  console.log("Connection was opened")
+	}, false)
+  
+	source.addEventListener('error', function(e) {
+	  if (e.readyState == EventSource.CLOSED) {
+		console.log("Connection was closed")
+	  }
+	}, false)
+} else {
+	console.log("sse not supported.");
+}
\ No newline at end of file
-- 
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