Implement task queue and notifications

client/components/summon-button.js

@@ -0,0 +1,49 @@
+"use strict";
+
+import m from "mithril";
+import * as taskQueue from "../task-queue";
+import * as store from "../store";
+import * as notifications from "../notifications";
+
+const component = {
+  view: vnode => {
+    return m(
+      "a.summon",
+      {
+        onclick: () => {
+          const params = Object.values(vnode.attrs.parameters);
+          const task = {
+            name: "getParameterValues",
+            parameterNames: params,
+            device: vnode.attrs.device["DeviceID.ID"].value[0]
+          };
+
+          taskQueue
+            .commit([task], (deviceId, connectionRequestStatus, tasks2) => {
+              for (let t of tasks2)
+                if (t.status === "stale") taskQueue.deleteTask(t);
+              if (connectionRequestStatus !== "OK")
+                notifications.push(
+                  "error",
+                  `${deviceId}: ${connectionRequestStatus}`
+                );
+              else if (tasks2[0].status === "stale")
+                notifications.push(
+                  "error",
+                  `${deviceId}: No contact from device`
+                );
+              else if (tasks2[0].status === "fault")
+                notifications.push("error", `${deviceId}: Refresh faulted`);
+              else notifications.push("success", `${deviceId}: Summoned`);
+            })
+            .then(() => {
+              store.fulfill(Date.now(), Date.now());
+            });
+        }
+      },
+      "Summon"
+    );
+  }
+};
+
+export default component;