[WIP] Add capability to show PRs in picker

src/commands.ts

@@ -1604,26 +1604,81 @@ ${contents}
 			if (!githubRepo) {
 				return;
 			}
-			const prNumber = await vscode.window.showInputBox({
-				ignoreFocusOut: true, prompt: vscode.l10n.t('Enter the pull request number or URL'),
-				validateInput: (input: string) => {
-					const result = validateAndParseInput(input, githubRepo.repo.remote.owner, githubRepo.repo.remote.repositoryName);
-					return result.isValid ? undefined : result.errorMessage;
+
+			// Create QuickPick to show all PRs
+			const quickPick = vscode.window.createQuickPick<vscode.QuickPickItem & { pr?: PullRequestModel }>();
+			quickPick.placeholder = vscode.l10n.t('Enter a pull request number/URL or select from the list');
+			quickPick.matchOnDescription = true;
+			quickPick.matchOnDetail = true;
+			quickPick.show();
+			quickPick.busy = true;
+
+			let acceptDisposable: vscode.Disposable | undefined;
+			let hideDisposable: vscode.Disposable | undefined;
+
+			// Fetch all open PRs (lightweight query)
+			try {
+				const prs = await githubRepo.repo.getPullRequestNumbers();
+				if (!prs) {
+					return vscode.window.showErrorMessage(vscode.l10n.t('Failed to fetch pull requests'));
 				}
-			});
-			if ((prNumber === undefined) || prNumber === '#') {
-				return;
-			}
+				// Sort PRs by number in descending order (most recent first)
+				const sortedPRs = prs.sort((a, b) => b.number - a.number);
+				const prItems: (vscode.QuickPickItem & { prNumber: number })[] = sortedPRs.map(pr => ({
+					label: `#${pr.number} ${pr.title}`,
+					description: `by @${pr.author.login}`,
+					prNumber: pr.number
+				}));
+
+				quickPick.items = prItems;
+				quickPick.busy = false;
+
+				// Handle selection
+				const selected = await new Promise<(vscode.QuickPickItem & { prNumber?: number }) | string | undefined>((resolve) => {
+					acceptDisposable = quickPick.onDidAccept(() => {
+						if (quickPick.selectedItems.length > 0) {
+							resolve(quickPick.selectedItems[0]);
+						} else if (quickPick.value) {
+							// User typed something but didn't select from list
+							resolve(quickPick.value);
+						} else {
+							// User pressed Enter with no selection and no input
+							resolve(undefined);
+						}
+					});
+					hideDisposable = quickPick.onDidHide(() => resolve(undefined));
+				});
 
-			// Extract PR number from input (either direct number or URL)
-			const parseResult = validateAndParseInput(prNumber, githubRepo.repo.remote.owner, githubRepo.repo.remote.repositoryName);
-			if (!parseResult.isValid) {
-				return vscode.window.showErrorMessage(parseResult.errorMessage || vscode.l10n.t('Invalid pull request number or URL'));
-			}
+				if (!selected) {
+					return;
+				}
+				quickPick.busy = true;
+				let prModel: PullRequestModel | undefined;
+
+				// Check if user selected from the list or typed a custom value
+				if (typeof selected === 'string') {
+					// User typed a PR number or URL
+					const parseResult = validateAndParseInput(selected, githubRepo.repo.remote.owner, githubRepo.repo.remote.repositoryName);
+					if (!parseResult.isValid) {
+						return vscode.window.showErrorMessage(parseResult.errorMessage || vscode.l10n.t('Invalid pull request number or URL'));
+					}
+					prModel = await githubRepo.manager.fetchById(githubRepo.repo, parseResult.prNumber);
+				} else if (selected.prNumber) {
+					// User selected from the list
+					prModel = await githubRepo.manager.fetchById(githubRepo.repo, selected.prNumber);
+				}
 
-			const prModel = await githubRepo.manager.fetchById(githubRepo.repo, parseResult.prNumber);
-			if (prModel) {
-				return ReviewManager.getReviewManagerForFolderManager(reviewsManager.reviewManagers, githubRepo.manager)?.switch(prModel);
+				if (prModel) {
+					return ReviewManager.getReviewManagerForFolderManager(reviewsManager.reviewManagers, githubRepo.manager)?.switch(prModel);
+				}
+			} catch (e) {
+				vscode.window.showErrorMessage(vscode.l10n.t('Failed to fetch pull requests: {0}', formatError(e)));
+			} finally {
+				// Clean up event listeners and QuickPick
+				acceptDisposable?.dispose();
+				hideDisposable?.dispose();
+				quickPick.hide();
+				quickPick.dispose();
 			}
 		}));
 

src/github/githubRepository.ts

@@ -27,6 +27,8 @@ import {
 	OrganizationTeamsCountResponse,
 	OrganizationTeamsResponse,
 	OrgProjectsResponse,
+	PullRequestNumberData,
+	PullRequestNumbersResponse,
 	PullRequestParticipantsResponse,
 	PullRequestResponse,
 	PullRequestsResponse,
@@ -668,6 +670,40 @@ export class GitHubRepository extends Disposable {
 		return undefined;
 	}
 
+	async getPullRequestNumbers(): Promise<PullRequestNumberData[] | undefined> {
+		let remote: GitHubRemote | undefined;
+		try {
+			Logger.debug(`Fetch pull request numbers - enter`, this.id);
+			const ensured = await this.ensure();
+			remote = ensured.remote;
+			const { query, schema } = ensured;
+			const { data } = await query<PullRequestNumbersResponse>({
+				query: schema.PullRequestNumbers,
+				variables: {
+					owner: remote.owner,
+					name: remote.repositoryName,
+					first: 100,
+				},
+			});
+			Logger.debug(`Fetch pull request numbers - done`, this.id);
+
+			if (data?.repository?.pullRequests) {
+				return data.repository.pullRequests.nodes;
+			}
+		} catch (e) {
+			Logger.error(`Fetching pull request numbers failed: ${e}`, this.id);
+			if (e.status === 404) {
+				// not found
+				vscode.window.showWarningMessage(
+					`Fetching pull request numbers for remote '${remote?.remoteName}' failed, please check if the repository ${remote?.owner}/${remote?.repositoryName} is valid.`,
+				);
+			} else {
+				throw e;
+			}
+		}
+		return undefined;
+	}
+
 	async getPullRequestForBranch(branch: string, headOwner: string): Promise<PullRequestModel | undefined> {
 		let remote: GitHubRemote | undefined;
 		try {

src/github/graphql.ts

@@ -844,6 +844,23 @@ export interface PullRequestsResponse {
 	} | null;
 }
 
+export interface PullRequestNumbersResponse {
+	repository: {
+		pullRequests: {
+			nodes: PullRequestNumberData[]
+		}
+	} | null;
+	rateLimit: RateLimit;
+}
+
+export interface PullRequestNumberData {
+	number: number;
+	title: string;
+	author: {
+		login: string;
+	};
+}
+
 export interface MaxIssueResponse {
 	repository: {
 		issues: {

src/github/queriesShared.gql

@@ -686,6 +686,27 @@ query PullRequestTemplates($owner: String!, $name: String!) {
 	}
 }
 
+fragment PullRequestNumberFragment on PullRequest {
+	number
+	title
+	author {
+		login
+	}
+}
+
+query PullRequestNumbers($owner: String!, $name: String!, $first: Int!) {
+	repository(owner: $owner, name: $name) {
+		pullRequests(first: $first, states: OPEN, orderBy: { field: CREATED_AT, direction: DESC }) {
+			nodes {
+				...PullRequestNumberFragment
+			}
+		}
+	}
+	rateLimit {
+		...RateLimit
+	}
+}
+
 mutation AddComment($input: AddPullRequestReviewCommentInput!) {
 	addPullRequestReviewComment(input: $input) {
 		comment {