Implement irc:// protocol handler

client/js/options.js

@@ -320,4 +320,20 @@ function initialize() {
 	// We always ask for synced settings even if it is disabled.
 	// Settings can be mandatory to sync and it is used to determine sync base state.
 	socket.emit("setting:get");
+
+	// Protocol handler
+	const defaultClientButton = $("#make-default-client");
+
+	if (window.navigator.registerProtocolHandler) {
+		defaultClientButton.on("click", function() {
+			const uri = document.location.origin + document.location.pathname + "?uri=%s";
+
+			window.navigator.registerProtocolHandler("irc", uri, "The Lounge");
+			window.navigator.registerProtocolHandler("ircs", uri, "The Lounge");
+
+			return false;
+		});
+	} else {
+		defaultClientButton.hide();
+	}
 }

client/js/socket-events/configuration.js

@@ -90,9 +90,70 @@ socket.on("configuration", function(data) {
 		utils.togglePasswordField("#connect .reveal-password");
 	});
 
-	if ($(document.body).hasClass("public") && "URLSearchParams" in window) {
+	if ("URLSearchParams" in window) {
 		const params = new URLSearchParams(document.location.search);
 
+		if (params.has("uri")) {
+			parseIrcUri(params.get("uri") + location.hash, data);
+		} else if ($(document.body).hasClass("public")) {
+			parseOverrideParams(params, data);
+		}
+	}
+});
+
+function parseIrcUri(stringUri, defaults) {
+	const data = Object.assign({}, defaults.defaults);
+
+	try {
+		// https://tools.ietf.org/html/draft-butcher-irc-url-04
+		const uri = new URL(stringUri);
+
+		// Replace protocol with a "special protocol" (that's what it's called in WHATWG spec)
+		// So that the uri can be properly parsed
+		if (uri.protocol === "irc:") {
+			uri.protocol = "http:";
+
+			if (!uri.port) {
+				uri.port = 6667;
+			}
+
+			data.tls = false;
+		} else if (uri.protocol === "ircs:") {
+			uri.protocol = "https:";
+
+			if (!uri.port) {
+				uri.port = 6697;
+			}
+
+			data.tls = true;
+		} else {
+			return;
+		}
+
+		data.host = data.name = uri.hostname;
+		data.port = uri.port;
+		data.username = window.decodeURIComponent(uri.username) || data.username;
+		data.password = window.decodeURIComponent(uri.password) || data.password;
+
+		let channel = (uri.pathname + uri.hash).substr(1);
+		const index = channel.indexOf(",");
+
+		if (index > -1) {
+			channel = channel.substring(0, index);
+		}
+
+		data.join = channel;
+
+		// TODO: Need to show connect window with uri params without overriding defaults
+		defaults.defaults = data;
+
+		$('button[data-target="#connect"]').trigger("click");
+	} catch (e) {
+		// do nothing on invalid uri
+	}
+}
+
+function parseOverrideParams(params, data) {
 	for (let [key, value] of params) {
 		// Support `channels` as a compatibility alias with other clients
 		if (key === "channels") {
@@ -121,4 +182,3 @@ socket.on("configuration", function(data) {
 		}
 	}
 }
-});

client/views/windows/settings.tpl

@@ -14,6 +14,10 @@
 	</div>
 
 	<div class="row">
+		<div class="col-sm-12">
+			<button type="button" class="btn" id="make-default-client">Open irc:// URLs with The Lounge</button>
+		</div>
+
 		{{#unless public}}
 		<div class="col-sm-12" data-advanced>
 			<h2>