Add first session date handling to welcome page logic (microsoft#264185)

Author: bhavyaus

src/vs/workbench/contrib/welcomeGettingStarted/browser/gettingStarted.ts

@@ -45,7 +45,7 @@ import { IOpenerService } from '../../../../platform/opener/common/opener.js';
 import { IProductService } from '../../../../platform/product/common/productService.js';
 import { IQuickInputService } from '../../../../platform/quickinput/common/quickInput.js';
 import { IStorageService, StorageScope, StorageTarget, WillSaveStateReason } from '../../../../platform/storage/common/storage.js';
-import { ITelemetryService, TelemetryLevel } from '../../../../platform/telemetry/common/telemetry.js';
+import { firstSessionDateStorageKey, ITelemetryService, TelemetryLevel } from '../../../../platform/telemetry/common/telemetry.js';
 import { getTelemetryLevel } from '../../../../platform/telemetry/common/telemetryUtils.js';
 import { defaultButtonStyles, defaultKeybindingLabelStyles, defaultToggleStyles } from '../../../../platform/theme/browser/defaultStyles.js';
 import { IWindowOpenable } from '../../../../platform/window/common/window.js';
@@ -941,6 +941,22 @@ export class GettingStartedPage extends EditorPane {
 			const telemetryNotice = $('p.telemetry-notice');
 			this.buildTelemetryFooter(telemetryNotice);
 			footer.appendChild(telemetryNotice);
+		} else if (!this.productService.openToWelcomeMainPage && this.showFeaturedWalkthrough && this.storageService.isNew(StorageScope.APPLICATION)) {
+			const firstSessionDateString = this.storageService.get(firstSessionDateStorageKey, StorageScope.APPLICATION) || new Date().toUTCString();
+			const daysSinceFirstSession = ((+new Date()) - (+new Date(firstSessionDateString))) / 1000 / 60 / 60 / 24;
+			const fistContentBehaviour = daysSinceFirstSession < 1 ? 'openToFirstCategory' : 'index';
+
+			if (fistContentBehaviour === 'openToFirstCategory') {
+				const first = this.gettingStartedCategories.filter(c => !c.when || this.contextService.contextMatchesRules(c.when))[0];
+				if (first) {
+					this.currentWalkthrough = first;
+					this.editorInput.selectedCategory = this.currentWalkthrough?.id;
+					this.editorInput.walkthroughPageTitle = this.currentWalkthrough.walkthroughPageTitle;
+					this.buildCategorySlide(this.editorInput.selectedCategory, undefined);
+					this.setSlide('details', true /* firstLaunch */);
+					return;
+				}
+			}
 		}
 
 		this.setSlide('categories');