Extract some dom-manipulations

src/Action/UpgradeBuildingAction.ts

@@ -1,17 +1,19 @@
 import { ActionController, registerAction } from './ActionController';
 import { Args } from '../Common';
-import { TryLaterError } from '../Errors';
+import { GrabError, TryLaterError } from '../Errors';
 import { Task } from '../Storage/TaskQueue';
+import { clickUpgradeButton } from '../Page/BuildingPage';
 
 @registerAction
 export class UpgradeBuildingAction extends ActionController {
     async run(args: Args, task: Task): Promise<any> {
-        const btn = jQuery('.upgradeButtonsContainer .section1 button.green.build');
-
-        if (btn.length !== 1) {
-            throw new TryLaterError(task.id, 15 * 60, 'No upgrade button, try later');
+        try {
+            clickUpgradeButton();
+        } catch (e) {
+            if (e instanceof GrabError) {
+                throw new TryLaterError(task.id, 15 * 60, 'No upgrade button, try later');
+            }
+            throw e;
         }
-
-        btn.trigger('click');
     }
 }

src/Dashboard/Dashboard.ts

@@ -7,7 +7,7 @@ import { BuildPage } from '../Page/BuildPage';
 import { UpgradeBuildingTask } from '../Task/UpgradeBuildingTask';
 import { grabResources } from '../Page/ResourcesBlock';
 import { grabActiveVillageId, grabVillageList } from '../Page/VillageBlock';
-import { onResourceSlotCtrlClick, showBuildingSlotIds, showFieldsSlotIds } from '../Page/SlotBlock';
+import { onResourceSlotCtrlClick, showBuildingSlotIds, showResourceSlotIds } from '../Page/SlotBlock';
 
 export class Dashboard {
     private readonly version: string;
@@ -42,7 +42,7 @@ export class Dashboard {
             .map(t => t.args.buildId);
 
         if (p.pathname === '/dorf1.php') {
-            showFieldsSlotIds(buildingsInQueue);
+            showResourceSlotIds(buildingsInQueue);
             onResourceSlotCtrlClick(buildId => {
                 this.scheduler.scheduleTask(UpgradeBuildingTask.name, { villageId, buildId });
                 const n = new Notification(`Building ${buildId} scheduled`);

src/Page/BuildingPage.ts

@@ -0,0 +1,9 @@
+import { GrabError } from '../Errors';
+
+export function clickUpgradeButton() {
+    const btn = jQuery('.upgradeButtonsContainer .section1 button.green.build');
+    if (btn.length !== 1) {
+        throw new GrabError('No upgrade button, try later');
+    }
+    btn.trigger('click');
+}

src/Page/SlotBlock.ts

@@ -9,10 +9,7 @@ function slotElements(prefix: string): Array<Slot> {
     const result: Array<Slot> = [];
     jQuery('.level.colorLayer').each((idx, el) => {
         const buildId = getNumber(elClassId(jQuery(el).attr('class') || '', prefix));
-        result.push({
-            el,
-            buildId,
-        });
+        result.push({ el, buildId });
     });
     return result;
 }
@@ -35,7 +32,7 @@ function showSlotIds(prefix: string, buildingIds: number[]): void {
     });
 }
 
-export function showFieldsSlotIds(buildingIds: number[]): void {
+export function showResourceSlotIds(buildingIds: number[]): void {
     showSlotIds('buildingSlot', buildingIds);
 }