X-Git-Url: http://git.scottworley.com/reliable-chat/blobdiff_plain/bd1ed9dd102d04d543f2fad5737b91c1a5835316..16640c5d843dd7fd5edbd5c98ef6035ffa96eea4:/webclient/rc.html?ds=sidebyside

diff --git a/webclient/rc.html b/webclient/rc.html
index a062a17..f3abaf3 100644
--- a/webclient/rc.html
+++ b/webclient/rc.html
@@ -80,8 +80,14 @@
 	var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
 
 	var session = Math.random();  // For outgoing message IDs
-	var since = {};  // server -> time: For fetch?since=
-	var seen = {};  // seen_key -> true
+	var since = {};    // server -> time: For fetch?since=
+	var seen = {};     // seen_key -> message
+	// Messages have these fields:
+	//   Time: The timestamp.  Median of ServerTimes
+	//   ID: Some unique string for deduping
+	//   Text: The text of the message
+	//   ServerTimes: server -> timestamp
+	//   UI: The DOM node for this message in the UI
 
 	function rcnick() {
 		var nick = localStorage.getItem("nick");
@@ -127,26 +133,46 @@
 	}
 
 	function rcaddmessagetohistory(message) {
-		var d = document.createElement("div");
+		message.UI = document.createElement("div");
 		var text = (message.Time ? rcformattime(message.Time) : "") + " " + message.Text;
-		d.appendChild(document.createTextNode(text));
+		message.UI.appendChild(document.createTextNode(text));
 		var h = document.getElementById("history");
-		h.appendChild(d);
+		h.appendChild(message.UI);
 		window.scrollTo(0, document.body.scrollHeight);
-		return d;
 	}
 
 	function make_seen_key(id, text) {
 		return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
 	}
 
+	function rcupdatemessagetime(message) {
+		// Set message.Time to be the median of message.ServerTimes
+		var times = [];
+		for (var i in message.ServerTimes) {
+			times.push(message.ServerTimes[i]);
+		}
+		times.sort();
+		var middle = times.length/2;
+		if (times.length % 2) {
+			message.Time = times[middle];
+		} else {
+			var difference = times[middle].getTime() - times[middle-1].getTime();
+			message.Time = new Date(times[middle-1].getTime() + difference/2);
+		}
+	}
+
 	function rcreceivemessages(server, messages) {
 		for (var i in messages) {
 			var m = messages[i];
 			m.Time = new Date(m.Time);
 			var seen_key = make_seen_key(m.ID, m.Text);
-			if (!(seen_key in seen)) {
-				seen[seen_key] = true;
+			if (seen_key in seen) {
+				seen[seen_key].ServerTimes[server] = m.Time;
+				rcupdatemessagetime(seen[seen_key]);
+			} else {
+				m.ServerTimes = {};
+				m.ServerTimes[server] = m.Time;
+				seen[seen_key] = m;
 				rcaddmessagetohistory(m);
 				for (var i in servers) {
 					rcchangeserverstatus(servers[i], "sad");
@@ -166,11 +192,11 @@
 					if (rtxt != null) {
 						var messages = JSON.parse(rtxt);
 						if (messages != null) {
-							rcreceivemessages(server, messages);
 							delay = 40;
 							if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
 								since[server] = messages[messages.length-1].Time;
 							}
+							rcreceivemessages(server, messages);
 						}
 					}
 				}
@@ -198,7 +224,7 @@
 
 	function rcsend(d, message) {
 		var id = new Date().getTime() + "-" + session + "-" + Math.random();
-		seen[make_seen_key(id, message)] = true;
+		seen[make_seen_key(id, message)] = message;
 		var path = "/speak" +
 			"?id=" + encodeURIComponent(id) +
 			"&text=" + encodeURIComponent(message);
@@ -223,8 +249,9 @@
 			message = "<" + rcnick() + "> " + input;
 		}
 
-		var d = rcaddmessagetohistory({'Text': message});
-		rcsend(d, message);
+		var m = {'Text': message};
+		rcaddmessagetohistory(m);
+		rcsend(m.UI, m);
 	}
 
 	function rckeydown(event) {