Can't add comments on added lines (#3558)

Fixes #3556

Author: alexr00

src/github/utils.ts

@@ -909,13 +909,15 @@ export function parseGraphQLViewerPermission(
 	return ViewerPermission.Unknown;
 }
 
+export function isFileInRepo(repository: Repository, file: vscode.Uri): boolean {
+	return file.path.toLowerCase() === repository.rootUri.path.toLowerCase() ||
+		(file.path.toLowerCase().startsWith(repository.rootUri.path.toLowerCase()) &&
+			file.path.substring(repository.rootUri.path.length).startsWith('/'));
+}
+
 export function getRepositoryForFile(gitAPI: GitApiImpl, file: vscode.Uri): Repository | undefined {
 	for (const repository of gitAPI.repositories) {
-		if (
-			file.path.toLowerCase() === repository.rootUri.path.toLowerCase() ||
-			(file.path.toLowerCase().startsWith(repository.rootUri.path.toLowerCase()) &&
-				file.path.substring(repository.rootUri.path.length).startsWith('/'))
-		) {
+		if (isFileInRepo(repository, file)) {
 			return repository;
 		}
 	}

src/view/reviewCommentController.ts

@@ -21,6 +21,7 @@ import { PullRequestOverviewPanel } from '../github/pullRequestOverview';
 import {
 	CommentReactionHandler,
 	createVSCodeCommentThreadForReviewThread,
+	isFileInRepo,
 	threadRange,
 	updateCommentReviewState,
 	updateCommentThreadLabel,
@@ -378,15 +379,12 @@ export class ReviewCommentController
 			return true;
 		}
 
-		const currentWorkspace = vscode.workspace.getWorkspaceFolder(thread.uri);
-		if (!currentWorkspace) {
+
+		if (!isFileInRepo(this._repository, thread.uri)) {
 			return false;
 		}
 
-		if (
-			thread.uri.scheme === currentWorkspace.uri.scheme &&
-			thread.uri.fsPath.startsWith(this._repository.rootUri.fsPath)
-		) {
+		if (thread.uri.scheme === this._repository.rootUri.scheme) {
 			return true;
 		}
 
@@ -408,12 +406,11 @@ export class ReviewCommentController
 			}
 		}
 
-		const currentWorkspace = vscode.workspace.getWorkspaceFolder(document.uri);
-		if (!currentWorkspace) {
+		if (!isFileInRepo(this._repository, document.uri)) {
 			return;
 		}
 
-		if (document.uri.scheme === currentWorkspace.uri.scheme) {
+		if (document.uri.scheme === this._repository.rootUri.scheme) {
 			if (!this._reposManager.activePullRequest!.isResolved()) {
 				return;
 			}