luci-app-shadowsocks-libev: auto update instance running state

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

applications/luci-app-shadowsocks-libev/luasrc/controller/shadowsocks-libev.lua

@@ -19,4 +19,15 @@ function index()
 	entry({"admin", "services", "shadowsocks-libev", "rules"},
 		cbi("shadowsocks-libev/rules"),
 		_("Redir Rules"), 30).leaf = true
+
+	entry({"admin", "services", "shadowsocks-libev", "status"}, call("ss_status"), nil).leaf = true
+
+end
+
+function ss_status()
+	local ut = require "luci.util"
+	local rv = ut.ubus("service", "list", {name = "shadowsocks-libev"})["shadowsocks-libev"] or {_=0}
+
+	luci.http.prepare_content("application/json")
+	luci.http.write_json(rv)
 end

applications/luci-app-shadowsocks-libev/luasrc/model/cbi/shadowsocks-libev/instances.lua

@@ -15,19 +15,10 @@ m = Map("shadowsocks-libev",
 
 local instances = {}
 local cfgtypes = { "ss_local", "ss_redir", "ss_server", "ss_tunnel" }
-local instances_data = ut.ubus("service", "list", {name = "shadowsocks-libev"})["shadowsocks-libev"]
-if instances_data ~= nil then
-	instances_data = instances_data["instances"]
-end
 
 for sname, sdata in pairs(m:get()) do
 	local key, value = ss.cfgvalue_overview(sdata)
 	if key ~= nil then
-		if instances_data and instances_data[key] and instances_data[key]["running"] then
-			value["running"] = "yes"
-		else
-			value["running"] = "no"
-		end
 		instances[key] = value
 	end
 end

applications/luci-app-shadowsocks-libev/luasrc/view/shadowsocks-libev/add_instance.htm

@@ -20,3 +20,26 @@
 		</tr>
 	</table>
 </div>
+<script type="text/javascript">//<![CDATA[
+	XHR.poll(5, '<%=url('admin/services/shadowsocks-libev/status')%>', null,
+		function(x, st)
+		{
+			var names = [
+				<%-
+					for _, name in ipairs(self:cfgsections()) do
+						write("%q," % name)
+					end
+				-%>
+			];
+			var instances = st["instances"] || {};
+			for (var i = 0, len = names.length; i < len; i++) {
+				var name = names[i];
+				var el = document.getElementById('cbi-table-' + name + '-running');
+				if (el) {
+					var running = instances.hasOwnProperty(name)? instances[name].running : false;
+					el.innerText = running ? 'yes' : 'no';
+				}
+			}
+		}
+	);
+//]]></script>