feat(pr): add GitLab support

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
@@ -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

@@ -333,6 +333,7 @@ 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" },
     ],
   });
 }
@@ -484,7 +485,8 @@ 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);

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;
   }
@@ -118,12 +125,16 @@ export async function getRemoteHostname(): Promise<string | null> {
 }
 
 export function checkCLI(platform: Platform): string | null {
-  const bin = platform === "github" ? "gh" : "tea";
+  const bin =
+    platform === "github" ? "gh" : platform === "gitlab" ? "glab" : "tea";
   const path = Bun.which(bin);
   if (!path) {
     if (platform === "github") {
       return "GitHub CLI (gh) not found. Install: brew install gh";
     }
+    if (platform === "gitlab") {
+      return "GitLab CLI (glab) not found. Install: brew install glab";
+    }
     return "Gitea CLI (tea) not found. Install from: https://gitea.com/gitea/tea";
   }
   return null;
@@ -139,6 +150,15 @@ export async function checkAuth(platform: Platform): Promise<string | null> {
     }
   }
 
+  if (platform === "gitlab") {
+    try {
+      await Bun.$`glab auth status`.quiet();
+      return null;
+    } catch {
+      return "Not authenticated with GitLab CLI. Run: glab auth login";
+    }
+  }
+
   try {
     const result = await Bun.$`tea logins list`.quiet().text();
     if (result.trim()) return null;
@@ -186,6 +206,37 @@ 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",

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();
+  });
+});