Feature: Mass award badge (#8694)

* UI: Mass grant a badge from the admin ui

* Send the uploaded CSV and badge ID to the backend

* Read the CSV and grant badge in batches

* UX: Communicate the result to the user

* Don't award if badge is disabled

* Create a 'send_notification' method to remove duplicated code, slightly shrink badge image. Replace router transition with href.

* Dynamically discover current route

app/assets/javascripts/admin/controllers/admin-badges-award.js.es6

@@ -0,0 +1,35 @@
+import Controller from "@ember/controller";
+import { ajax } from "discourse/lib/ajax";
+import { popupAjaxError } from "discourse/lib/ajax-error";
+
+export default Controller.extend({
+  saving: false,
+
+  actions: {
+    massAward() {
+      const file = document.querySelector("#massAwardCSVUpload").files[0];
+
+      if (this.model && file) {
+        const options = {
+          type: "POST",
+          processData: false,
+          contentType: false,
+          data: new FormData()
+        };
+
+        options.data.append("file", file);
+
+        this.set("saving", true);
+
+        ajax(`/admin/badges/award/${this.model.id}`, options)
+          .then(() => {
+            bootbox.alert(I18n.t("admin.badges.mass_award.success"));
+          })
+          .catch(popupAjaxError)
+          .finally(() => this.set("saving", false));
+      } else {
+        bootbox.alert(I18n.t("admin.badges.mass_award.aborted"));
+      }
+    }
+  }
+});

app/assets/javascripts/admin/controllers/admin-badges.js.es6

@@ -1,2 +1,18 @@
 import Controller from "@ember/controller";
-export default Controller.extend();
+import { inject as service } from "@ember/service";
+import discourseComputed from "discourse-common/utils/decorators";
+
+export default Controller.extend({
+  routing: service("-routing"),
+
+  @discourseComputed("routing.currentRouteName")
+  selectedRoute() {
+    const currentRoute = this.routing.currentRouteName;
+    const indexRoute = "adminBadges.index";
+    if (currentRoute === indexRoute) {
+      return "adminBadges.show";
+    } else {
+      return this.routing.currentRouteName;
+    }
+  }
+});