feat: refactor commitAndPush to use GIT_ASKPASS for authentication and add tests

Reviewed-on: jiantw83/code-review#66

app/git.js

@@ -1,7 +1,7 @@
 import { spawnSync } from 'child_process';
 import fs from 'fs';
 import path from 'path';
-import { GITEA_SERVER_URL, GITEA_REPOSITORY, GITEA_TOKEN, PR_HEAD_BRANCH, FINDINGS_PATH } from './config.js';
+import { GITEA_SERVER_URL, GITEA_REPOSITORY, PR_HEAD_BRANCH, FINDINGS_PATH } from './config.js';
 
 function git(args, cwd) {
   const result = spawnSync('git', args, { cwd, encoding: 'utf8' });
@@ -11,21 +11,36 @@ function git(args, cwd) {
 }
 
 export async function commitAndPush(workspace) {
-  const remoteUrl = GITEA_SERVER_URL.replace(/\/$/, '')
-    .replace('https://', `https://${GITEA_TOKEN}@`)
-    .replace('http://', `http://${GITEA_TOKEN}@`) + `/${GITEA_REPOSITORY}.git`;
+  const remoteUrl = GITEA_SERVER_URL.replace(/\/$/, '') + `/${GITEA_REPOSITORY}.git`;
 
   const repoDir = path.join(workspace, 'repo');
 
   try {
     if (!fs.existsSync(repoDir)) {
-      git(['clone', '--depth=1', '--branch', PR_HEAD_BRANCH, remoteUrl, repoDir], workspace);
+      // Use GIT_ASKPASS to provide token for authentication
+      gitWithToken(['clone', '--depth=1', '--branch', PR_HEAD_BRANCH, remoteUrl, repoDir], workspace);
     }
 
     git(['config', 'user.email', 'ai-review[bot]@gitea'], repoDir);
     git(['config', 'user.name', 'AI Review Bot'], repoDir);
     git(['fetch', 'origin', PR_HEAD_BRANCH], repoDir);
     git(['checkout', PR_HEAD_BRANCH], repoDir);
+// Helper to run git with GITEA_TOKEN via GIT_ASKPASS
+import { GITEA_TOKEN } from './config.js';
+function gitWithToken(args, cwd) {
+  const askPassScript = `#!/bin/sh\necho \"${GITEA_TOKEN}\"`;
+  const askPassPath = path.join(cwd, 'git-askpass.sh');
+  fs.writeFileSync(askPassPath, askPassScript, { mode: 0o700 });
+  const result = spawnSync('git', args, {
+    cwd,
+    encoding: 'utf8',
+    env: { ...process.env, GIT_ASKPASS: askPassPath },
+  });
+  fs.unlinkSync(askPassPath);
+  if (result.error) throw result.error;
+  if (result.status !== 0) throw new Error((result.stderr || result.stdout || '').trim());
+  return (result.stdout || '').trim();
+}
 
     // 將 findings.json 從 workspace 複製到 clone 的 repo
     const srcFindings = path.join(workspace, FINDINGS_PATH);

app/git.test.js

@@ -0,0 +1,30 @@
+import { commitAndPush } from './git.js';
+import fs from 'fs';
+import path from 'path';
+
+// Mock dependencies and environment
+jest.mock('fs');
+jest.mock('child_process', () => ({
+  spawnSync: jest.fn(() => ({ status: 0, stdout: '', stderr: '' }))
+}));
+
+describe('commitAndPush', () => {
+  const workspace = '/tmp/workspace';
+  const repoDir = path.join(workspace, 'repo');
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+    fs.existsSync.mockReturnValue(false);
+    fs.writeFileSync.mockImplementation(() => {});
+    fs.unlinkSync.mockImplementation(() => {});
+  });
+
+  it('should clone repo and configure git', async () => {
+    await expect(commitAndPush(workspace)).resolves.not.toThrow();
+  });
+
+  it('should not clone if repo exists', async () => {
+    fs.existsSync.mockReturnValue(true);
+    await expect(commitAndPush(workspace)).resolves.not.toThrow();
+  });
+});