fix: update askpass script to securely read token from env var

Reviewed-on: jiantw83/code-review#66

.gitea/ai-review/findings.json

@@ -0,0 +1,58 @@
+[
+  {
+    "level": "critical",
+    "role": "Leo",
+    "location": "app/git.js:11",
+    "suggestion": "GITEA_TOKEN 直接嵌入 URL 中，可能導致憑證洩漏。建議使用環境變數或安全的憑證管理方式來處理敏感資訊。",
+    "is_new": true
+  },
+  {
+    "level": "critical",
+    "role": "Maya",
+    "location": "app/git.js:1",
+    "suggestion": "缺少對 commitAndPush 函數的單元測試，應該為其添加測試以確保其正確性。",
+    "is_new": true
+  },
+  {
+    "level": "warning",
+    "role": "Leo",
+    "location": "app/git.js:25",
+    "suggestion": "在使用 fs.existsSync 檢查目錄是否存在時，應考慮使用非同步方法以避免阻塞事件循環。",
+    "is_new": true
+  },
+  {
+    "level": "warning",
+    "role": "Leo",
+    "location": "app/git.js:29",
+    "suggestion": "在 git clone 時使用 --depth=1 可能會導致未來需要完整歷史紀錄時的性能問題，建議根據實際需求調整。",
+    "is_new": true
+  },
+  {
+    "level": "warning",
+    "role": "Leo",
+    "location": "app/git.js:11",
+    "suggestion": "在使用 fs.copyFileSync 時，未檢查目標檔案是否存在，可能會覆蓋重要資料。建議在複製之前檢查檔案是否存在。",
+    "is_new": true
+  },
+  {
+    "level": "warning",
+    "role": "Leo",
+    "location": "app/git.js:11",
+    "suggestion": "在 commitAndPush 函數中，對於 git 操作的錯誤處理不夠完善，應該添加更多的測試來驗證不同情況下的行為。",
+    "is_new": true
+  },
+  {
+    "level": "info",
+    "role": "Leo",
+    "location": ".gitea/workflows/review.yaml:5",
+    "suggestion": "建議在 'branches-ignore' 前加上空行，以提高可讀性。",
+    "is_new": true
+  },
+  {
+    "level": "info",
+    "role": "Leo",
+    "location": "app/git.js:45",
+    "suggestion": "考慮使用 async/await 來處理 fs.copyFileSync，以提高可讀性和錯誤處理能力。",
+    "is_new": true
+  }
+]

.gitea/workflows/review.yaml

@@ -1,6 +1,11 @@
 name: AI
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref }}
+  cancel-in-progress: true
 on:
   pull_request:
+    branches-ignore:
+    - master
     types: [opened, synchronize]
 jobs:
   version:
@@ -28,9 +33,8 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@v${{ needs.version.outputs.version }}
       with:
-        OPENAI_API_KEY: ${{ secrets.HF_API_KEY }}
-        OPENAI_BASE_URL: https://router.huggingface.co/novita/v1
-        OPENAI_MODEL: deepseek-ai/DeepSeek-R1
+        OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
+        OPENAI_BASE_URL: https://openrouter.ai/api/v1
     permissions:
       contents: write
       pull-requests: write

Dockerfile

@@ -1,8 +1,9 @@
-FROM node:20-slim
+FROM alpine
 
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    git \
-    && rm -rf /var/lib/apt/lists/*
+RUN apk add --no-cache bash nodejs npm git \
+    && node --version \
+    && npm --version \
+    && git --version
 
 WORKDIR /action
 

README.md

@@ -41,8 +41,10 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@${{ vars.ACTION_CODE_REVIEW_VERSION }}
       with:
+        # Github (h3285@evertrust.com.tw)
+        # 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
         OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
-        OPENAI_BASE_URL: https://api.openai.com/v1
+        OPENAI_BASE_URL: https://openrouter.ai/api/v1
     permissions:
       contents: write
       pull-requests: write

TODO.md

@@ -27,6 +27,7 @@
 
 ---
 
+
 每個階段都會加上明確的 log，並確保即使部分功能未完成也能降級執行、不會中斷 pipeline。
 
 每次執行後請貼 log，我會協助 debug。

app/comments.js

@@ -0,0 +1,70 @@
+import fs from 'fs';
+import path from 'path';
+import { postComment } from './gitea.js';
+import { FINDINGS_PATH } from './config.js';
+
+const LEVEL_EMOJI = { critical: '🔴', warning: '🟡', info: '🔵' };
+const LEVEL_LABEL = { critical: '嚴重', warning: '警告', info: '建議' };
+
+function findingRow(f) {
+  return `| ${LEVEL_EMOJI[f.level] || ''} ${LEVEL_LABEL[f.level] || f.level} | ${f.role} | ${f.location} | ${f.suggestion} |`;
+}
+
+function buildTable(findings) {
+  const rows = findings.map(findingRow).join('\n');
+  return `| 等級 | 審查員 | 位置 | 建議 |\n|------|--------|------|------|\n${rows}`;
+}
+
+/**
+ * 寫入 findings.json 到 workspace
+ */
+export function saveFindings(workspace, findings) {
+  const fullPath = path.join(workspace, FINDINGS_PATH);
+  fs.mkdirSync(path.dirname(fullPath), { recursive: true });
+  fs.writeFileSync(fullPath, JSON.stringify(findings, null, 2), 'utf8');
+  console.log(`  ✅ findings 寫入: ${fullPath} (${findings.length} 筆)`);
+}
+
+/**
+ * 發布所有舊問題 comment（一次發布，依等級排序）
+ */
+export async function postOldFindingsComment(findings) {
+  const old = findings.filter(f => !f.is_new);
+  if (old.length === 0) {
+    console.log('  無舊問題，跳過');
+    return;
+  }
+  const body = `## 📋 舊有未解決問題（${old.length} 筆）\n\n${buildTable(old)}`;
+  await postComment(body);
+  console.log(`  ✅ 舊問題 comment 發布 (${old.length} 筆)`);
+}
+
+/**
+ * 發布新問題中非 critical 的 comment（一次發布）
+ */
+export async function postNewNonCriticalComment(findings) {
+  const items = findings.filter(f => f.is_new && f.level !== 'critical');
+  if (items.length === 0) {
+    console.log('  無新的非嚴重問題，跳過');
+    return;
+  }
+  const body = `## 🔍 新發現問題（${items.length} 筆）\n\n${buildTable(items)}`;
+  await postComment(body);
+  console.log(`  ✅ 新問題（非嚴重）comment 發布 (${items.length} 筆)`);
+}
+
+/**
+ * 每個新 critical 問題各發一個 comment
+ */
+export async function postNewCriticalComments(findings) {
+  const criticals = findings.filter(f => f.is_new && f.level === 'critical');
+  if (criticals.length === 0) {
+    console.log('  無新的嚴重問題，跳過');
+    return;
+  }
+  for (const f of criticals) {
+    const body = `## 🚨 嚴重問題\n\n| 審查員 | 位置 | 建議 |\n|--------|------|------|\n| ${f.role} | ${f.location} | ${f.suggestion} |`;
+    await postComment(body);
+    console.log(`  ✅ 嚴重問題 comment 發布: [${f.role}] ${f.location}`);
+  }
+}

app/findings.js

@@ -61,3 +61,35 @@ export function mergeFindings(oldFindings, newFindings) {
 export function sortByLevel(findings) {
   return [...findings].sort((a, b) => LEVELS.indexOf(a.level) - LEVELS.indexOf(b.level));
 }
+
+/**
+ * 呼叫 LLM 進行語意去重，回傳去重後的 findings
+ * 失敗時降級回傳原始 findings
+ */
+export async function deduplicateWithAI(findings) {
+  if (findings.length === 0) return findings;
+
+  const systemPrompt = `你是一位程式碼審查問題去重專家。
+給你一份問題清單（JSON 陣列），請移除語意重複的問題（即使描述文字不同，但指的是同一個問題）。
+保留等級較高的版本，優先保留 critical > warning > info。
+只回傳去重後的 JSON 陣列，不要有其他文字。`;
+
+  const userContent = `以下是問題清單，請去除語意重複的項目：\n\n${JSON.stringify(findings, null, 2)}`;
+
+  try {
+    const result = await chatJSON(systemPrompt, userContent);
+    if (Array.isArray(result) && result.length > 0) {
+      console.log(`  AI 去重: ${findings.length} -> ${result.length} 筆`);
+      return result;
+    }
+    throw new Error('AI 回傳空陣列');
+  } catch (e) {
+    const status = e.response?.status;
+    if (status === 402 || status === 429) {
+      console.log(`  ⚠️  AI 去重失敗（${status} 額度/限流），降級：保留所有問題`);
+    } else {
+      console.log(`  ⚠️  AI 去重失敗（${e.message}），降級：保留所有問題`);
+    }
+    return findings;
+  }
+}

app/git.js

@@ -0,0 +1,64 @@
+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';
+
+function makeRunner(spawn) {
+  return function run(args, cwd, env) {
+    const opts = { cwd, encoding: 'utf8' };
+    if (env) opts.env = env;
+    const result = spawn('git', args, opts);
+    if (result.error) throw result.error;
+    if (result.status !== 0) throw new Error((result.stderr || result.stdout || '').trim());
+    return (result.stdout || '').trim();
+  };
+}
+
+export async function commitAndPush(workspace, _spawnSync = spawnSync) {
+  const run = makeRunner(_spawnSync);
+
+  const baseUrl = GITEA_SERVER_URL.replace(/\/$/, '');
+  const remoteUrl = `${baseUrl}/${GITEA_REPOSITORY}.git`;
+  const repoDir = path.join(workspace, 'repo');
+
+  // Write a temporary askpass script that reads the token from an env var,
+  // so the token value never appears in the script file itself
+  const askpassScript = path.join(workspace, '.git-askpass.sh');
+  fs.writeFileSync(askpassScript, '#!/bin/sh\necho "$GIT_TOKEN"\n', { mode: 0o700 });
+
+  const credEnv = { ...process.env, GIT_ASKPASS: askpassScript, GIT_USERNAME: 'x-token', GIT_TOKEN: GITEA_TOKEN };
+
+  try {
+    if (!fs.existsSync(repoDir)) {
+      run(['clone', '--depth=1', '--branch', PR_HEAD_BRANCH, remoteUrl, repoDir], workspace, credEnv);
+    }
+
+    run(['config', 'user.email', 'ai-review[bot]@gitea'], repoDir);
+    run(['config', 'user.name', 'AI Review Bot'], repoDir);
+    run(['fetch', 'origin', PR_HEAD_BRANCH], repoDir, credEnv);
+    run(['checkout', PR_HEAD_BRANCH], repoDir);
+
+    // 將 findings.json 從 workspace 複製到 clone 的 repo
+    const srcFindings = path.join(workspace, FINDINGS_PATH);
+    const destFindings = path.join(repoDir, FINDINGS_PATH);
+    fs.mkdirSync(path.dirname(destFindings), { recursive: true });
+    fs.copyFileSync(srcFindings, destFindings);
+
+    run(['add', FINDINGS_PATH], repoDir);
+
+    const status = run(['status', '--porcelain'], repoDir);
+    if (!status) {
+      console.log('  findings.json 無變更，跳過 commit');
+      return;
+    }
+
+    const out = run(['commit', '-m', 'chore: update ai-review findings [skip ci]'], repoDir);
+    const commitHash = out.match(/\[.+ ([a-f0-9]+)\]/)?.[1] || 'unknown';
+    run(['push', remoteUrl, PR_HEAD_BRANCH], repoDir, credEnv);
+    console.log(`  ✅ persisted findings  commit=${commitHash}  push=${PR_HEAD_BRANCH}`);
+  } catch (e) {
+    console.log(`  ⚠️  Runner failed: commit/push 失敗: ${e.message}`);
+  } finally {
+    try { fs.unlinkSync(askpassScript); } catch {}
+  }
+}

app/git.test.js

@@ -0,0 +1,93 @@
+import { describe, it, before, after, beforeEach } from 'node:test';
+import assert from 'node:assert/strict';
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
+import { commitAndPush } from './git.js';
+
+// --- helpers ---
+function makeTmpWorkspace() {
+  const ws = fs.mkdtempSync(path.join(os.tmpdir(), 'git-test-'));
+  // Pre-create repo dir so clone branch is skipped
+  fs.mkdirSync(path.join(ws, 'repo'), { recursive: true });
+  // Create a findings.json to copy
+  const findingsDir = path.join(ws, '.gitea/ai-review');
+  fs.mkdirSync(findingsDir, { recursive: true });
+  fs.writeFileSync(path.join(findingsDir, 'findings.json'), '[]');
+  return ws;
+}
+
+// Default stub: all commands succeed, status returns changes
+function makeSpawn(overrides = {}) {
+  const calls = [];
+  const spawn = (cmd, args, opts) => {
+    const key = args[0];
+    calls.push({ cmd, args, opts });
+    if (overrides[key]) return overrides[key](args, opts);
+    if (key === 'status') return { status: 0, stdout: 'M .gitea/ai-review/findings.json', stderr: '', error: null };
+    if (key === 'commit') return { status: 0, stdout: '[feature-branch abc1234] chore', stderr: '', error: null };
+    return { status: 0, stdout: '', stderr: '', error: null };
+  };
+  spawn.calls = calls;
+  return spawn;
+}
+
+describe('commitAndPush', () => {
+  let workspace;
+
+  before(() => { workspace = makeTmpWorkspace(); });
+  after(() => { fs.rmSync(workspace, { recursive: true, force: true }); });
+  beforeEach(() => {
+    // Remove leftover askpass scripts between tests
+    for (const f of fs.readdirSync(workspace)) {
+      if (f.endsWith('.git-askpass.sh')) fs.unlinkSync(path.join(workspace, f));
+    }
+  });
+
+  it('does not embed token in any git command argument', async () => {
+    const spawn = makeSpawn();
+    await commitAndPush(workspace, spawn);
+
+    for (const { args } of spawn.calls) {
+      assert.ok(!args.join(' ').includes('test-token'), `Token leaked in git args: ${args.join(' ')}`);
+    }
+  });
+
+  it('uses GIT_ASKPASS env for network operations (fetch, push, clone)', async () => {
+    const spawn = makeSpawn();
+    await commitAndPush(workspace, spawn);
+
+    const networkOps = ['fetch', 'push', 'clone'];
+    const networkCalls = spawn.calls.filter(c => networkOps.includes(c.args[0]));
+    assert.ok(networkCalls.length > 0, 'expected at least one network git call');
+
+    for (const { args, opts } of networkCalls) {
+      assert.ok(opts?.env?.GIT_ASKPASS, `GIT_ASKPASS missing for git ${args[0]}`);
+    }
+  });
+
+  it('cleans up askpass script after successful run', async () => {
+    await commitAndPush(workspace, makeSpawn());
+    const leftover = fs.readdirSync(workspace).filter(f => f.endsWith('.git-askpass.sh'));
+    assert.equal(leftover.length, 0, 'askpass script was not cleaned up');
+  });
+
+  it('cleans up askpass script even when git fails', async () => {
+    const failSpawn = () => ({ status: 1, stdout: '', stderr: 'fatal: error', error: null });
+    await commitAndPush(workspace, failSpawn);
+    const leftover = fs.readdirSync(workspace).filter(f => f.endsWith('.git-askpass.sh'));
+    assert.equal(leftover.length, 0, 'askpass script was not cleaned up after failure');
+  });
+
+  it('skips commit when status shows no changes', async () => {
+    const spawn = makeSpawn({ status: () => ({ status: 0, stdout: '', stderr: '', error: null }) });
+    await commitAndPush(workspace, spawn);
+    const commitCalled = spawn.calls.some(c => c.args[0] === 'commit');
+    assert.equal(commitCalled, false, 'commit should not run when there are no changes');
+  });
+
+  it('does not throw when git command fails', async () => {
+    const failSpawn = () => ({ status: 1, stdout: '', stderr: 'fatal: error', error: null });
+    await assert.doesNotReject(() => commitAndPush(workspace, failSpawn));
+  });
+});

app/main.js

@@ -1,7 +1,9 @@
 import { GITEA_REPOSITORY, PR_NUMBER, PR_HEAD_BRANCH, PR_BASE_BRANCH, getLLMConfig } from './config.js';
 import { loadRoles, getRoleIntro } from './roles.js';
 import { getPRDiff, postComment } from './gitea.js';
-import { analyzeWithRole, loadOldFindings, mergeFindings, sortByLevel } from './findings.js';
+import { analyzeWithRole, loadOldFindings, mergeFindings, sortByLevel, deduplicateWithAI } from './findings.js';
+import { saveFindings, postOldFindingsComment, postNewNonCriticalComment, postNewCriticalComments } from './comments.js';
+import { commitAndPush } from './git.js';
 
 const WORKSPACE = process.env.GITHUB_WORKSPACE || '/workspace';
 
@@ -66,17 +68,40 @@ async function main() {
   console.log('\n🔀 Step3: Findings 合併');
   const oldFindings = loadOldFindings(WORKSPACE);
   const mergedFindings = mergeFindings(oldFindings, newFindings);
-  const sorted = sortByLevel(mergedFindings);
-  console.log(`  Step3 merged findings total=${sorted.length} (critical=${sorted.filter(f=>f.level==='critical').length} warning=${sorted.filter(f=>f.level==='warning').length} info=${sorted.filter(f=>f.level==='info').length})`);
+  console.log(`  Step3 merged findings total=${mergedFindings.length}`);
 
-  console.log('\n📝 Step4: Findings 寫入與 Comment 發布（待實作）');
-  console.log('  [stub] 寫入 findings.json，發布 comment...');
+  // Step3b: AI 語意去重
+  console.log('\n🤖 Step3b: AI 語意去重');
+  const deduped = await deduplicateWithAI(mergedFindings);
+  const sorted = sortByLevel(deduped);
+  console.log(`  Step3b dedup findings total=${sorted.length} (critical=${sorted.filter(f=>f.level==='critical').length} warning=${sorted.filter(f=>f.level==='warning').length} info=${sorted.filter(f=>f.level==='info').length})`);
 
-  console.log('\n💾 Step5: 記憶區 Commit/Push（待實作）');
-  console.log('  [stub] commit & push findings.json...');
+  // Step4: 寫入 findings.json，依序發布 comment
+  console.log('\n📝 Step4: Findings 寫入與 Comment 發布');
+  saveFindings(WORKSPACE, sorted);
 
-  console.log('\n🚦 Step6: 嚴重問題檢查（待實作）');
-  console.log('  [stub] 檢查 critical findings...');
+  try {
+    await postOldFindingsComment(sorted);
+    await postNewNonCriticalComment(sorted);
+    await postNewCriticalComments(sorted);
+    console.log('  Step4 完成');
+  } catch (e) {
+    console.log(`  ⚠️  comment 發布失敗（繼續執行）: ${e.message}`);
+  }
+
+  // Step5: commit/push findings.json 到來源分支
+  console.log('\n💾 Step5: 記憶區 Commit/Push');
+  await commitAndPush(WORKSPACE);
+
+  // Step6: 有 critical 問題則 exit 1
+  console.log('\n🚦 Step6: 嚴重問題檢查');
+  const criticalCount = sorted.filter(f => f.level === 'critical').length;
+  if (criticalCount > 0) {
+    console.log(`  ❌ 發現 ${criticalCount} 個嚴重問題，workflow 結束（exit 1）`);
+    console.log('='.repeat(60));
+    process.exit(1);
+  }
+  console.log('  ✅ 無嚴重問題');
 
   console.log('\n✅ Pipeline 完成');
   console.log('='.repeat(60));

app/package.json

@@ -2,6 +2,9 @@
   "name": "ai-code-review",
   "version": "1.0.0",
   "type": "module",
+  "scripts": {
+    "test": "node --test app/git.test.js"
+  },
   "dependencies": {
     "axios": "^1.6.7",
     "js-yaml": "^4.1.0",