feat(menu): add back key navigation

README.md

@@ -22,7 +22,7 @@ Generate **Conventional Commits** messages and pull request descriptions using A
 - **Conventional Commits** — `feat(scope): description` format by default
 - **Interactive file selection** — ↑/↓ to navigate, space to select, top-level "Select all"
 - **Inline editing** — edit AI-generated messages right in the terminal with cursor movement
-- **AI-generated PRs** — create GitHub or Gitea pull requests with generated title and body
+- **AI-generated PRs** — create GitHub, Gitea, or GitLab pull requests with generated title and body
 - **OpenAI-compatible API** — works with DeepSeek, OpenAI, Ollama, OpenRouter, and more
 - **Review before commit** — confirm, edit, or abort the generated message
 - **Bun-native runtime** — built on Bun APIs with no runtime npm dependencies
@@ -84,7 +84,7 @@ $ gai commit
 
   Select files to stage:
   2 unstaged files available
-  ↑/↓ navigate · space toggle · enter confirm · ctrl+c cancel
+  ↑/↓ navigate · space toggle · enter confirm · ←/backspace back · ctrl+c cancel
 
   ❯ □ Select all
     □ src/ai.ts      modified
@@ -108,6 +108,7 @@ $ gai commit
 
 - GitHub remotes use the `gh` CLI
 - Gitea remotes use the `tea` CLI
+- GitLab remotes use the `glab` CLI
 - Unknown remotes prompt you to choose a platform
 
 The command compares your current branch against the default branch, pushes the branch if needed, generates a PR title/body from the branch commits and diff, then asks for confirmation before creating the PR.

index.ts

@@ -13,7 +13,8 @@ import {
   commit,
 } from "./src/git";
 import { selectFiles } from "./src/selector";
-import { selectOne } from "./src/menu";
+import { BACK, selectOne } from "./src/menu";
+import type { PromptBack } from "./src/menu";
 import { collectProjectContext } from "./src/context";
 import { buildPrompt, SYSTEM_PROMPT } from "./src/prompt";
 import { generateCommitMessage } from "./src/ai";
@@ -29,8 +30,6 @@ import {
   getBranchDiff,
   detectPlatform,
   getRemoteHostname,
-  checkCLI,
-  checkAuth,
   createPR,
 } from "./src/pr";
 import type { Platform } from "./src/pr";
@@ -306,22 +305,34 @@ async function showMenu(): Promise<void> {
     process.exit(1);
   }
 
-  const selected = await selectOne({
-    title: "gai",
-    subtitle: "Choose a workflow",
-    items: MENU_ACTIONS.map((action) => ({
-      label: action.label,
-      value: action.key,
-      description: action.description,
-    })),
-  });
+  while (true) {
+    const selected = await selectOne({
+      title: "gai",
+      subtitle: "Choose a workflow",
+      allowBack: false,
+      items: MENU_ACTIONS.map((action) => ({
+        label: action.label,
+        value: action.key,
+        description: action.description,
+      })),
+    });
 
-  if (selected === "commit") await handleCommit(false, false);
-  if (selected === "pr") await handlePR(false);
-  if (selected === "config") await handleConfig();
+    if (selected === null || selected === BACK) return;
+
+    const result =
+      selected === "commit"
+        ? await handleCommit(false, false)
+        : selected === "pr"
+          ? await handlePR(false)
+          : await handleConfig().then(() => "done" as const);
+
+    if (result !== "back") return;
+  }
 }
 
-async function selectPlatform(hostname: string): Promise<Platform | null> {
+async function selectPlatform(
+  hostname: string,
+): Promise<Platform | null | PromptBack> {
   if (!process.stdin.isTTY) {
     console.error(`  ${RED}Error: Platform selection requires a TTY.${RESET}`);
     process.exit(1);
@@ -333,11 +344,15 @@ async function selectPlatform(hostname: string): Promise<Platform | null> {
     items: [
       { label: "GitHub", value: "github" as Platform, description: "Use gh CLI" },
       { label: "Gitea", value: "gitea" as Platform, description: "Use tea CLI" },
+      { label: "GitLab", value: "gitlab" as Platform, description: "Use glab CLI" },
     ],
   });
 }
 
-async function handleCommit(autoMode: boolean, dryRun: boolean): Promise<void> {
+async function handleCommit(
+  autoMode: boolean,
+  dryRun: boolean,
+): Promise<"done" | "back"> {
   const config = await loadConfig();
 
   if (!config.apiKey) {
@@ -357,7 +372,7 @@ async function handleCommit(autoMode: boolean, dryRun: boolean): Promise<void> {
 
   if (stagedFiles.length === 0 && unstagedFiles.length === 0) {
     console.log("  Nothing to commit.");
-    return;
+    return "done";
   }
 
   if (unstagedFiles.length > 0) {
@@ -368,6 +383,7 @@ async function handleCommit(autoMode: boolean, dryRun: boolean): Promise<void> {
       );
     } else {
       const selected = await selectFiles(stagedFiles, unstagedFiles);
+      if (selected === BACK) return "back";
       if (selected.length > 0) {
         await stageFiles(selected);
         console.log(
@@ -380,7 +396,7 @@ async function handleCommit(autoMode: boolean, dryRun: boolean): Promise<void> {
   const diff = await getStagedDiff();
   if (!diff) {
     console.log("  No staged changes to commit.");
-    return;
+    return "done";
   }
 
   const MAX_DIFF_SIZE = 15000;
@@ -418,7 +434,7 @@ async function handleCommit(autoMode: boolean, dryRun: boolean): Promise<void> {
     console.log(`    ${GREEN}${message}${RESET}`);
     await copyToClipboard(message);
     console.log(`\n  ${DIM}(dry-run, message copied to clipboard)${RESET}`);
-    return;
+    return "done";
   }
 
   const action = await confirmCommit(message);
@@ -456,9 +472,11 @@ async function handleCommit(autoMode: boolean, dryRun: boolean): Promise<void> {
         : `  Aborted. Message: ${message}`,
     );
   }
+
+  return "done";
 }
 
-async function handlePR(draft: boolean): Promise<void> {
+async function handlePR(draft: boolean): Promise<"done" | "back"> {
   const config = await loadConfig();
 
   if (!config.apiKey) {
@@ -477,6 +495,7 @@ async function handlePR(draft: boolean): Promise<void> {
   if (!platform) {
     const hostname = (await getRemoteHostname()) || "unknown";
     const chosen = await selectPlatform(hostname);
+    if (chosen === BACK) return "back";
     if (!chosen) {
       console.log("  Aborted.");
       process.exit(0);
@@ -484,21 +503,10 @@ async function handlePR(draft: boolean): Promise<void> {
     platform = chosen;
   }
 
-  const platformLabel = platform === "github" ? "GitHub" : "Gitea";
+  const platformLabel =
+    platform === "github" ? "GitHub" : platform === "gitlab" ? "GitLab" : "Gitea";
   console.log(`  Using: ${CYAN}${platformLabel}${RESET}`);
 
-  const cliError = checkCLI(platform);
-  if (cliError) {
-    console.error(`  ${RED}Error: ${cliError}${RESET}`);
-    process.exit(1);
-  }
-
-  const authError = await checkAuth(platform);
-  if (authError) {
-    console.error(`  ${RED}Error: ${authError}${RESET}`);
-    process.exit(1);
-  }
-
   const baseBranch = await getDefaultBranch();
   const branchName = await getBranchName();
 
@@ -535,7 +543,7 @@ async function handlePR(draft: boolean): Promise<void> {
 
     if (answer.toLowerCase() === "n") {
       console.log("  Aborted.");
-      return;
+      return "done";
     }
 
     console.log(`  Pushing ${CYAN}${branchName}${RESET}...`);
@@ -604,7 +612,7 @@ async function handlePR(draft: boolean): Promise<void> {
 
   if (lower === "n") {
     console.log("  Aborted.");
-    return;
+    return "done";
   }
 
   if (lower === "e") {
@@ -612,7 +620,7 @@ async function handlePR(draft: boolean): Promise<void> {
     const newBody = await ask("  Body (optional): ");
     if (!newTitle.trim()) {
       console.log("  Aborted.");
-      return;
+      return "done";
     }
     title = newTitle;
     body = newBody;
@@ -630,6 +638,8 @@ async function handlePR(draft: boolean): Promise<void> {
     );
     process.exit(1);
   }
+
+  return "done";
 }
 
 async function main() {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gai",
-  "version": "0.1.0",
+  "version": "0.1.2",
   "description": "AI-powered git commit message generator",
   "module": "index.ts",
   "type": "module",

src/menu.ts

@@ -2,11 +2,17 @@ import { BOLD, GREEN, CYAN, DIM, RESET } from "./terminal";
 
 const UP = "\x1b[A";
 const DOWN = "\x1b[B";
+const LEFT = "\x1b[D";
 const ALT_UP = "\x1bOA";
 const ALT_DOWN = "\x1bOB";
+const ALT_LEFT = "\x1bOD";
 const SPACE = " ";
 const ENTER = "\r";
 const CTRL_C = "\x03";
+const BACKSPACE = "\x7f";
+
+export const BACK = Symbol("prompt-back");
+export type PromptBack = typeof BACK;
 
 export interface Choice<T> {
   label: string;
@@ -19,6 +25,7 @@ interface BasePromptOptions {
   title: string;
   subtitle?: string;
   cancelMessage?: string;
+  allowBack?: boolean;
 }
 
 interface SinglePromptOptions<T> extends BasePromptOptions {
@@ -55,11 +62,13 @@ function padLabel(label: string, width: number) {
   return label + " ".repeat(Math.max(1, width - visibleLength(label)));
 }
 
-function controls(mode: "single" | "multi") {
+function controls(mode: "single" | "multi", showBackHint = true) {
   if (mode === "single") {
-    return `${DIM}↑/↓ navigate · enter/space select · ctrl+c cancel${RESET}`;
+    const backHint = showBackHint ? " · ←/backspace back" : "";
+    return `${DIM}↑/↓ navigate · enter/space select${backHint} · ctrl+c cancel${RESET}`;
   }
-  return `${DIM}↑/↓ navigate · space toggle · enter confirm · ctrl+c cancel${RESET}`;
+  const backHint = showBackHint ? " · ←/backspace back" : "";
+  return `${DIM}↑/↓ navigate · space toggle · enter confirm${backHint} · ctrl+c cancel${RESET}`;
 }
 
 function renderPrompt(lines: string[], previousLines: number) {
@@ -89,6 +98,9 @@ function clearPrompt(lines: number) {
 function normalizeKey(key: string, escapeBuf: string) {
   if (key === UP || key === ALT_UP) return { action: "up", escapeBuf: "" };
   if (key === DOWN || key === ALT_DOWN) return { action: "down", escapeBuf: "" };
+  if (key === LEFT || key === ALT_LEFT || key === BACKSPACE) {
+    return { action: "back", escapeBuf: "" };
+  }
   if (key === SPACE) return { action: "space", escapeBuf: "" };
   if (key === ENTER) return { action: "enter", escapeBuf: "" };
   if (key === CTRL_C) return { action: "cancel", escapeBuf: "" };
@@ -101,6 +113,9 @@ function normalizeKey(key: string, escapeBuf: string) {
     const next = escapeBuf + key;
     if (next === UP || next === ALT_UP) return { action: "up", escapeBuf: "" };
     if (next === DOWN || next === ALT_DOWN) return { action: "down", escapeBuf: "" };
+    if (next === LEFT || next === ALT_LEFT) {
+      return { action: "back", escapeBuf: "" };
+    }
     return {
       action: null,
       escapeBuf: /^[A-Za-z~]$/.test(key) || next.length > 8 ? "" : next,
@@ -126,7 +141,7 @@ function createLines<T>(
   ];
 
   if (options.subtitle) lines.push(`  ${DIM}${options.subtitle}${RESET}`);
-  lines.push(`  ${controls(mode)}`, "");
+  lines.push(`  ${controls(mode, options.allowBack !== false)}`, "");
 
   for (let i = 0; i < options.items.length; i++) {
     const item = options.items[i]!;
@@ -156,7 +171,7 @@ function ensureTTY(title: string) {
 
 export async function selectOne<T>(
   options: SinglePromptOptions<T>,
-): Promise<T | null> {
+): Promise<T | null | PromptBack> {
   ensureTTY(options.title);
 
   let cursor = 0;
@@ -178,7 +193,7 @@ export async function selectOne<T>(
   render();
 
   return new Promise((resolve) => {
-    const finish = (value: T | null) => {
+    const finish = (value: T | null | PromptBack) => {
       process.stdin.setRawMode(wasRaw === true);
       process.stdin.pause();
       process.stdin.removeListener("data", onData);
@@ -195,6 +210,9 @@ export async function selectOne<T>(
       escapeBuf = result.escapeBuf;
 
       if (result.action === "cancel") return finish(null);
+      if (result.action === "back" && options.allowBack !== false) {
+        return finish(BACK);
+      }
       if (result.action === "up" && cursor > 0) {
         cursor--;
         render();
@@ -212,7 +230,7 @@ export async function selectOne<T>(
 
 export async function selectMany<T>(
   options: MultiPromptOptions<T>,
-): Promise<T[] | null> {
+): Promise<T[] | null | PromptBack> {
   ensureTTY(options.title);
 
   const items: Choice<T | null>[] = options.selectAllLabel
@@ -267,7 +285,7 @@ export async function selectMany<T>(
   render();
 
   return new Promise((resolve) => {
-    const finish = (value: T[] | null) => {
+    const finish = (value: T[] | null | PromptBack) => {
       process.stdin.setRawMode(wasRaw === true);
       process.stdin.pause();
       process.stdin.removeListener("data", onData);
@@ -284,6 +302,9 @@ export async function selectMany<T>(
       escapeBuf = result.escapeBuf;
 
       if (result.action === "cancel") return finish(null);
+      if (result.action === "back" && options.allowBack !== false) {
+        return finish(BACK);
+      }
       if (result.action === "up" && cursor > 0) {
         cursor--;
         render();

src/pr.ts

@@ -1,4 +1,4 @@
-export type Platform = "github" | "gitea";
+export type Platform = "github" | "gitea" | "gitlab";
 
 export async function getDefaultBranch(): Promise<string> {
   try {
@@ -93,16 +93,23 @@ function parseRemoteHostname(url: string): string | null {
   return hostname || null;
 }
 
+export function detectPlatformFromHostname(hostname: string | null): Platform | null {
+  if (!hostname) return null;
+
+  if (hostname === "github.com") return "github";
+  if (hostname === "gitlab.com" || hostname.includes("gitlab")) {
+    return "gitlab";
+  }
+  if (hostname.includes("gitea")) return "gitea";
+  return null;
+}
+
 export async function detectPlatform(): Promise<Platform | null> {
   try {
     const url = await Bun.$`git remote get-url origin`.quiet().text();
     const hostname = parseRemoteHostname(url);
 
-    if (!hostname) return null;
-
-    if (hostname === "github.com") return "github";
-    if (hostname.includes("gitea")) return "gitea";
-    return null;
+    return detectPlatformFromHostname(hostname);
   } catch {
     return null;
   }
@@ -117,37 +124,6 @@ export async function getRemoteHostname(): Promise<string | null> {
   }
 }
 
-export function checkCLI(platform: Platform): string | null {
-  const bin = platform === "github" ? "gh" : "tea";
-  const path = Bun.which(bin);
-  if (!path) {
-    if (platform === "github") {
-      return "GitHub CLI (gh) not found. Install: brew install gh";
-    }
-    return "Gitea CLI (tea) not found. Install from: https://gitea.com/gitea/tea";
-  }
-  return null;
-}
-
-export async function checkAuth(platform: Platform): Promise<string | null> {
-  if (platform === "github") {
-    try {
-      await Bun.$`gh auth status`.quiet();
-      return null;
-    } catch {
-      return "Not authenticated with GitHub CLI. Run: gh auth login";
-    }
-  }
-
-  try {
-    const result = await Bun.$`tea logins list`.quiet().text();
-    if (result.trim()) return null;
-    return "Not authenticated with Gitea CLI. Run: tea login add";
-  } catch {
-    return "Not authenticated with Gitea CLI. Run: tea login add";
-  }
-}
-
 export async function createPR(
   platform: Platform,
   title: string,
@@ -186,6 +162,37 @@ export async function createPR(
     return match?.[1] ?? stdout.trim();
   }
 
+  if (platform === "gitlab") {
+    const args = [
+      "mr",
+      "create",
+      "--title",
+      title,
+      "--description",
+      body,
+      "--target-branch",
+      base,
+    ];
+    if (draft) args.push("--draft");
+
+    const proc = Bun.spawn(["glab", ...args], {
+      stdout: "pipe",
+      stderr: "pipe",
+    });
+    const exitCode = await proc.exited;
+    const stdout = await new Response(proc.stdout).text();
+    const stderr = await new Response(proc.stderr).text();
+
+    if (exitCode !== 0) {
+      throw new Error(
+        stderr.trim() || `glab mr create failed (exit code ${exitCode})`,
+      );
+    }
+
+    const match = stdout.match(/(https?:\/\/[^\s]+)/);
+    return match?.[1] ?? stdout.trim();
+  }
+
   const args = [
     "pulls",
     "create",

src/selector.ts

@@ -1,11 +1,12 @@
 import type { FileEntry } from "./types";
 import { BOLD, GREEN, YELLOW, RESET } from "./terminal";
-import { selectMany } from "./menu";
+import { BACK, selectMany } from "./menu";
+import type { PromptBack } from "./menu";
 
 export async function selectFiles(
   stagedFiles: FileEntry[],
   unstagedFiles: FileEntry[],
-): Promise<string[]> {
+): Promise<string[] | PromptBack> {
   if (unstagedFiles.length === 0) return [];
 
   if (stagedFiles.length > 0) {
@@ -30,6 +31,7 @@ export async function selectFiles(
   });
 
   if (selected === null) process.exit(1);
+  if (selected === BACK) return BACK;
 
   if (selected.length > 0) {
     process.stdout.write(

test/pr.test.ts

@@ -0,0 +1,19 @@
+import { test, expect, describe } from "bun:test";
+import { detectPlatformFromHostname } from "../src/pr";
+
+describe("pr platform detection", () => {
+  test("detects supported hosted platforms", () => {
+    expect(detectPlatformFromHostname("github.com")).toBe("github");
+    expect(detectPlatformFromHostname("gitlab.com")).toBe("gitlab");
+  });
+
+  test("detects self-hosted platform hostnames", () => {
+    expect(detectPlatformFromHostname("gitlab.example.com")).toBe("gitlab");
+    expect(detectPlatformFromHostname("gitea.example.com")).toBe("gitea");
+  });
+
+  test("returns null for unknown hostnames", () => {
+    expect(detectPlatformFromHostname("git.example.com")).toBeNull();
+    expect(detectPlatformFromHostname(null)).toBeNull();
+  });
+});