Fixed distance display, now calculates distance from last hop on the client

chrome/content/mailhops.js

@@ -8,7 +8,7 @@ var mailHops =
 {
   msgURI:	null
   , isLoaded: false
-  , options: {'version':'MailHops Plugin 1.0.4','lan':'en','unit':'mi','api_url':'http://api.mailhops.com','debug':false}
+  , options: {'version':'MailHops Plugin 1.0.5','lan':'en','unit':'mi','api_url':'http://api.mailhops.com','debug':false}
   , message: { secure:[] }
   , client_location: null
 };
@@ -363,6 +363,9 @@ mailHops.lookupRoute = function(header_route){
  if(mailHops.options.fkey != '')
     lookupURL += '&fkey='+mailHops.options.fkey;
 
+ if(mailHops.options.client_location != '')
+    lookupURL+='&c=0';
+
  mailHops.LOG(lookupURL);
 
  //check for cache

chrome/content/pb-overlay.js

@@ -302,7 +302,14 @@ var mailHopsDisplay =
 
   		if(this.options.client_location){
   			var client_location = JSON.parse(this.options.client_location);
-        if(response.route[response.route.length-1].ip != client_location.route[0].ip)
+        //get distance from last route to client_location and add to response.distance.miles or kilometers
+        if(!response.route[response.route.length-1]['private']){
+          if(this.options.unit=='km')
+            response.distance.kilometers += mailHopsUtils.getDistance(response.route[response.route.length-1],client_location.route[0],this.options.unit);
+          else
+            response.distance.miles += mailHopsUtils.getDistance(response.route[response.route.length-1],client_location.route[0],this.options.unit);
+        }
+        //push client location to the end of the route
         response.route.push(client_location.route[0]);
   		}
 
@@ -423,11 +430,11 @@ var mailHopsDisplay =
           displayText = first.countryName;
     }
 
-    if(response.distance && response.distance.miles > 0){
+    if(response.distance){
-    	if(this.options.unit=='mi')
+    	if(this.options.unit=='km' && response.distance.kilometers > 0)
-			distanceText =' ( '+mailHopsUtils.addCommas(Math.round(response.distance.miles))+' mi traveled )';
-		else
 			   distanceText =' ( '+mailHopsUtils.addCommas(Math.round(response.distance.kilometers))+' km traveled )';
+		  else if(response.distance.miles > 0)
+			   distanceText =' ( '+mailHopsUtils.addCommas(Math.round(response.distance.miles))+' mi traveled )';
 	  }
   	else if(displayText=='')
   		displayText = ' Local message.';

chrome/content/tb-overlay.js

@@ -185,7 +185,14 @@ var mailHopsDisplay =
 
       if(this.options.client_location){
         var client_location = JSON.parse(this.options.client_location);
-        if(response.route[response.route.length-1].ip != client_location.route[0].ip)
+        //get distance from last route to client_location and add to response.distance.miles or kilometers
+        if(!response.route[response.route.length-1]['private']){
+          if(this.options.unit=='km')
+            response.distance.kilometers += mailHopsUtils.getDistance(response.route[response.route.length-1],client_location.route[0],this.options.unit);
+          else
+            response.distance.miles += mailHopsUtils.getDistance(response.route[response.route.length-1],client_location.route[0],this.options.unit);
+        }
+        //push client location to the end of the route
         response.route.push(client_location.route[0]);
       }
       for(var i=0; i<response.route.length;i++){
@@ -284,11 +291,11 @@ var mailHopsDisplay =
           displayText = first.countryName;
     }
 
-    if(response.distance && response.distance.miles > 0){
+    if(response.distance){
-      if(this.options.unit=='mi')
+      if(this.options.unit=='km' && response.distance.kilometers > 0)
-        distanceText =' ( '+mailHopsUtils.addCommas(Math.round(response.distance.miles))+' mi traveled )';
-      else
         distanceText =' ( '+mailHopsUtils.addCommas(Math.round(response.distance.kilometers))+' km traveled )';
+      else if(response.distance.miles > 0)
+        distanceText =' ( '+mailHopsUtils.addCommas(Math.round(response.distance.miles))+' mi traveled )';
     } else if(displayText=='')
       displayText = ' Local message.';
   }

chrome/content/utils.js

@@ -177,6 +177,30 @@ getWeatherIcon: function(icon){
     var hr = (new Date).getHours();
     var time = (hr >= 4 && hr <= 18)?'day':'night';
     return 'chrome://mailhops/content/images/weather/'+forecast_icons[icon][time]+'.png';
-}
+},
+
+getDistance: function(from, to, unit) {
+    if(!from || !to || !from['lat'] || !to['lat'])
+      return 0;
+      
+		lat = parseFloat(from['lat']);
+		lon1 = parseFloat(from['lng']);
+		lat2 = parseFloat(to['lat']);
+		lon2 = parseFloat(to['lng']);
+    unit = unit || 'mi';//mi or km
+
+		lat *= (Math.PI/180);
+		lon1 *= (Math.PI/180);
+		lat2 *= (Math.PI/180);
+		lon2 *= (Math.PI/180);
+
+		dist = 2*Math.asin(Math.sqrt( Math.pow((Math.sin((lat-lat2)/2)),2) + Math.cos(lat)*Math.cos(lat2)*Math.pow((Math.sin((lon1-lon2)/2)),2))) * 6378.137;
+
+		if (unit == 'mi') {
+			dist = (dist / 1.609344);
+		}
+
+		return dist;
+	}
 
 };

install.rdf

@@ -5,7 +5,7 @@
 	<Description about="urn:mozilla:install-manifest">
 		<em:type>2</em:type>
 		<em:id>thunderbird@mailhops.com</em:id>
-		<em:version>1.0.4</em:version>
+		<em:version>1.0.5</em:version>
 
 		<em:name>MailHops</em:name>
 		<em:description>MailHops maps the route an email traveled to get to you.  Using GeoIP it also displays distance traveled along with the location (city, state and country) of the sender.</em:description>