Fix filter by tag

ui/smart-query.ts

@@ -132,6 +132,11 @@ function queryMac(param, value): Expression {
   ];
 }
 
+function queryTag(tag: string): Expression {
+  const t = tag.replace(/[^a-zA-Z0-9-]+/g, "_");
+  return ["IS NOT NULL", ["PARAM", `Tags.${t}`]];
+}
+
 export function getTip(resource, label): string {
   let tip;
   if (resources[resource] && resources[resource][label]) {
@@ -156,6 +161,9 @@ export function getTip(resource, label): string {
         case "mac":
           tips.push("partial case insensitive MAC address");
           break;
+        case "tag":
+          tips.push("case sensitive string");
+          break;
       }
     }
 
@@ -190,6 +198,11 @@ export function unpack(resource, label, value): Expression {
     if (q) res.push(q);
   }
 
+  if (type.includes("tag")) {
+    const q = queryTag(value);
+    if (q) res.push(q);
+  }
+
   if (res.length <= 1) return null;
   else if (res.length === 2) return res[1];
   else return res;