feat: add fetch prune & delete command

extensions/git/package.json

@@ -455,6 +455,12 @@
         "category": "Git",
         "enablement": "!operationInProgress"
       },
+      {
+        "command": "git.fetchPruneAndDelete",
+        "title": "%command.fetchPruneAndDelete%",
+        "category": "Git",
+        "enablement": "!operationInProgress"
+      },
       {
         "command": "git.renameBranch",
         "title": "%command.renameBranch%",

extensions/git/package.nls.json

@@ -63,6 +63,7 @@
 	"command.branch": "Create Branch...",
 	"command.branchFrom": "Create Branch From...",
 	"command.deleteBranch": "Delete Branch...",
+	"command.fetchPruneAndDelete": "Fetch (Prune) & Delete...",
 	"command.renameBranch": "Rename Branch...",
 	"command.cherryPick": "Cherry Pick...",
 	"command.merge": "Merge...",

extensions/git/src/commands.ts

@@ -2790,6 +2790,15 @@ export class CommandCenter {
 		}
 	}
 
+	@command('git.fetchPruneAndDelete', { repository: true })
+	async fetchPruneAndDelete(repository: Repository): Promise<void> {
+		try {
+			repository.fetchPruneAndDelete();
+		} catch (error) {
+			throw error;
+		}
+	}
+
 	@command('git.renameBranch', { repository: true })
 	async renameBranch(repository: Repository): Promise<void> {
 		const currentBranchName = repository.HEAD && repository.HEAD.name;

extensions/git/src/git.ts

@@ -13,7 +13,7 @@ import { EventEmitter } from 'events';
 import * as iconv from '@vscode/iconv-lite-umd';
 import * as filetype from 'file-type';
 import { assign, groupBy, IDisposable, toDisposable, dispose, mkdirp, readBytes, detectUnicodeEncoding, Encoding, onceEvent, splitInChunks, Limiter, Versions, isWindows, pathEquals, isMacintosh, isDescendant } from './util';
-import { CancellationError, CancellationToken, ConfigurationChangeEvent, LogOutputChannel, Progress, Uri, workspace } from 'vscode';
+import { CancellationError, CancellationToken, ConfigurationChangeEvent, LogOutputChannel, l10n, Progress, Uri, workspace, window } from 'vscode';
 import { detectEncoding } from './encoding';
 import { Ref, RefType, Branch, Remote, ForcePushMode, GitErrorCodes, LogOptions, Change, Status, CommitOptions, RefQuery, InitOptions } from './api/git';
 import * as byline from 'byline';
@@ -1730,6 +1730,64 @@ export class Repository {
 		await this.exec(args);
 	}
 
+	async fetchPruneAndDelete(): Promise<void> {
+		const fetchPruneOutput = await this.exec(['fetch', '--prune']);
+		const { exitCode, stderr } = fetchPruneOutput;
+
+		if (exitCode) {
+			throw new GitError({
+				message: 'Could not fetch.',
+				exitCode
+			});
+		}
+
+		// The outputs of the fetch prune is at stderr
+		if (!stderr) {
+			throw new GitError({
+				message: 'Could not find pruned branches to delete.',
+			});
+		}
+
+		const branchRegex = /->\s*(\S+)/;
+		// [
+		// 	'From github.com:username/some-repo',
+		// 	' - [deleted]         (none)     -> origin/foo',
+		// 	' - [deleted]         (none)     -> origin/bar',
+		// 	''
+		// ]
+		const branches: string[] = stderr.split('\n')
+			// [
+			// 	'origin/foo',
+			// 	'origin/bar',
+			// ]
+			// TODO: origin is hardcoded
+			.map((el) => el.match(branchRegex)?.[1]?.replace('origin/', '') ?? '')
+			// The origin branch name to run `git branch -d <name>`
+			// [
+			// 	'foo',
+			// 	'bar',
+			// ]
+			.filter(Boolean);
+
+		for (const branch of branches) {
+			try {
+				await this.deleteBranch(branch);
+			} catch (error) {
+				if (error.gitErrorCode !== GitErrorCodes.BranchNotFullyMerged) {
+					throw error;
+				}
+
+				const message = l10n.t(`The branch "${branch}" is not fully merged. Delete anyway?`);
+				const yes = l10n.t('Delete Branch');
+
+				const pick = await window.showWarningMessage(message, { modal: true }, yes);
+				if (pick === yes) {
+					await this.deleteBranch(branch, true);
+				}
+			}
+		}
+	}
+
 	async renameBranch(name: string): Promise<void> {
 		const args = ['branch', '-m', name];
 		await this.exec(args);

extensions/git/src/operation.ts

@@ -18,6 +18,7 @@ export const enum OperationKind {
 	Commit = 'Commit',
 	Config = 'Config',
 	DeleteBranch = 'DeleteBranch',
+	FetchPruneAndDelete = 'FetchPruneAndDelete',
 	DeleteRef = 'DeleteRef',
 	DeleteRemoteTag = 'DeleteRemoteTag',
 	DeleteTag = 'DeleteTag',
@@ -64,7 +65,7 @@ export const enum OperationKind {
 }
 
 export type Operation = AddOperation | ApplyOperation | BlameOperation | BranchOperation | CheckIgnoreOperation | CherryPickOperation |
-	CheckoutOperation | CheckoutTrackingOperation | CleanOperation | CommitOperation | ConfigOperation | DeleteBranchOperation |
+	CheckoutOperation | CheckoutTrackingOperation | CleanOperation | CommitOperation | ConfigOperation | DeleteBranchOperation | FetchPruneAndDeleteOperation |
 	DeleteRefOperation | DeleteRemoteTagOperation | DeleteTagOperation | DiffOperation | FetchOperation | FindTrackingBranchesOperation |
 	GetBranchOperation | GetBranchesOperation | GetCommitTemplateOperation | GetObjectDetailsOperation | GetObjectFilesOperation | GetRefsOperation |
 	GetRemoteRefsOperation | HashObjectOperation | IgnoreOperation | LogOperation | LogFileOperation | MergeOperation | MergeAbortOperation |
@@ -86,6 +87,7 @@ export type CleanOperation = BaseOperation & { kind: OperationKind.Clean };
 export type CommitOperation = BaseOperation & { kind: OperationKind.Commit };
 export type ConfigOperation = BaseOperation & { kind: OperationKind.Config };
 export type DeleteBranchOperation = BaseOperation & { kind: OperationKind.DeleteBranch };
+export type FetchPruneAndDeleteOperation = BaseOperation & { kind: OperationKind.FetchPruneAndDelete };
 export type DeleteRefOperation = BaseOperation & { kind: OperationKind.DeleteRef };
 export type DeleteRemoteTagOperation = BaseOperation & { kind: OperationKind.DeleteRemoteTag };
 export type DeleteTagOperation = BaseOperation & { kind: OperationKind.DeleteTag };
@@ -143,6 +145,7 @@ export const Operation = {
 	Commit: { kind: OperationKind.Commit, blocking: true, readOnly: false, remote: false, retry: false, showProgress: true } as CommitOperation,
 	Config: (readOnly: boolean) => ({ kind: OperationKind.Config, blocking: false, readOnly, remote: false, retry: false, showProgress: true } as ConfigOperation),
 	DeleteBranch: { kind: OperationKind.DeleteBranch, blocking: false, readOnly: false, remote: false, retry: false, showProgress: true } as DeleteBranchOperation,
+	FetchPruneAndDelete: { kind: OperationKind.FetchPruneAndDelete, blocking: false, readOnly: false, remote: false, retry: false, showProgress: true } as FetchPruneAndDeleteOperation,
 	DeleteRef: { kind: OperationKind.DeleteRef, blocking: false, readOnly: false, remote: false, retry: false, showProgress: true } as DeleteRefOperation,
 	DeleteRemoteTag: { kind: OperationKind.DeleteRemoteTag, blocking: false, readOnly: false, remote: true, retry: false, showProgress: true } as DeleteRemoteTagOperation,
 	DeleteTag: { kind: OperationKind.DeleteTag, blocking: false, readOnly: false, remote: false, retry: false, showProgress: true } as DeleteTagOperation,

extensions/git/src/repository.ts

@@ -1385,6 +1385,10 @@ export class Repository implements Disposable {
 		await this.run(Operation.DeleteBranch, () => this.repository.deleteBranch(name, force));
 	}
 
+	async fetchPruneAndDelete(): Promise<void> {
+		await this.run(Operation.FetchPruneAndDelete, () => this.repository.fetchPruneAndDelete());
+	}
+
 	async renameBranch(name: string): Promise<void> {
 		await this.run(Operation.RenameBranch, () => this.repository.renameBranch(name));
 	}