FEATURE: admin UI to merge two users. (#9509)

app/assets/javascripts/admin/controllers/admin-user-index.js

@@ -9,6 +9,7 @@ import { popupAjaxError } from "discourse/lib/ajax-error";
 import discourseComputed from "discourse-common/utils/decorators";
 import { fmt } from "discourse/lib/computed";
 import { htmlSafe } from "@ember/template";
+import showModal from "discourse/lib/show-modal";
 
 export default Controller.extend(CanCheckEmails, {
   adminTools: service(),
@@ -207,6 +208,27 @@ export default Controller.extend(CanCheckEmails, {
       }
     },
 
+    promptTargetUser() {
+      showModal("admin-merge-users-prompt", {
+        admin: true,
+        model: this.model
+      });
+    },
+
+    showMergeConfirmation(targetUsername) {
+      showModal("admin-merge-users-confirmation", {
+        admin: true,
+        model: {
+          username: this.model.username,
+          targetUsername: targetUsername
+        }
+      });
+    },
+
+    merge(targetUsername) {
+      return this.model.merge({ targetUsername: targetUsername });
+    },
+
     viewActionLogs() {
       this.adminTools.showActionLogs(this, {
         target_user: this.get("model.username")

app/assets/javascripts/admin/controllers/modals/admin-merge-users-confirmation.js

@@ -0,0 +1,35 @@
+import Controller, { inject as controller } from "@ember/controller";
+import ModalFunctionality from "discourse/mixins/modal-functionality";
+import discourseComputed from "discourse-common/utils/decorators";
+import { alias } from "@ember/object/computed";
+
+export default Controller.extend(ModalFunctionality, {
+  adminUserIndex: controller(),
+  username: alias("model.username"),
+  targetUsername: alias("model.targetUsername"),
+
+  onShow() {
+    this.set("value", null);
+  },
+
+  @discourseComputed("username", "targetUsername")
+  text(username, targetUsername) {
+    return `transfer @${username} to @${targetUsername}`;
+  },
+
+  @discourseComputed("value", "text")
+  mergeDisabled(value, text) {
+    return !value || text !== value;
+  },
+
+  actions: {
+    merge() {
+      this.adminUserIndex.send("merge", this.targetUsername);
+      this.send("closeModal");
+    },
+
+    cancel() {
+      this.send("closeModal");
+    }
+  }
+});

app/assets/javascripts/admin/controllers/modals/admin-merge-users-prompt.js

@@ -0,0 +1,29 @@
+import Controller, { inject as controller } from "@ember/controller";
+import ModalFunctionality from "discourse/mixins/modal-functionality";
+import discourseComputed from "discourse-common/utils/decorators";
+import { alias } from "@ember/object/computed";
+
+export default Controller.extend(ModalFunctionality, {
+  adminUserIndex: controller(),
+  username: alias("model.username"),
+
+  onShow() {
+    this.set("targetUsername", null);
+  },
+
+  @discourseComputed("username", "targetUsername")
+  mergeDisabled(username, targetUsername) {
+    return !targetUsername || username === targetUsername;
+  },
+
+  actions: {
+    merge() {
+      this.send("closeModal");
+      this.adminUserIndex.send("showMergeConfirmation", this.targetUsername);
+    },
+
+    cancel() {
+      this.send("closeModal");
+    }
+  }
+});