feat: support multiple OpenAI API keys in AI Code Review workflow

.gitea/ai-review/findings.json

@@ -1,4 +1,32 @@
 [
+  {
+    "level": "critical",
+    "role": "Leo",
+    "location": "app/llm.js:22",
+    "suggestion": "在 `chat` 函式中，`Authorization` 標頭是無條件地被加入到所有 LLM 請求中。這對於不需要 API Key 的服務（如 Ollama）是不必要的，且可能導致錯誤。建議在設定 `Authorization` 標頭之前，先判斷當前的 `provider` 是否需要 API Key，例如 `if (provider !== 'ollama' && apiKeys[i]) { headers['Authorization'] = `Bearer ${apiKeys[i]}`; }`，以提高程式碼的健壯性和正確性。",
+    "is_new": true
+  },
+  {
+    "level": "critical",
+    "role": "Zara",
+    "location": "app/llm.js:20",
+    "suggestion": "當啟用 API Key 輪替機制時，單一 API 請求的 `timeout` 設定為 120 秒過長。若有多個 Key 且每個 Key 都因逾時而失敗，可能導致整個流程耗時過久（例如 10 個 Key 可能耗時 20 分鐘）。建議將單次請求的逾時時間縮短（例如 10-30 秒），以加速 Key 的輪替，避免 CI/CD 流程長時間阻塞。",
+    "is_new": true
+  },
+  {
+    "level": "critical",
+    "role": "Rex",
+    "location": "app/llm.js:6",
+    "suggestion": "程式碼中 `https.Agent({ rejectUnauthorized: false })` 停用了 SSL/TLS 憑證驗證。這會使所有 HTTPS 連線容易受到中間人 (Man-in-the-Middle, MITM) 攻擊，攻擊者可以攔截並修改與 LLM 服務提供者的通訊，導致資料洩漏、未經授權的存取或 AI 回應被操縱。請移除 `const httpsAgent = new https.Agent({ rejectUnauthorized: false });` 這一行，並確保 `axios.post` 呼叫中不再使用 `httpsAgent` 選項。預設情況下，Node.js 和 Axios 會執行嚴格的 SSL 憑證驗證，這是確保通訊安全的最佳實踐。如果遇到憑證問題，應調查並解決底層的憑證信任鏈問題，而非禁用驗證。",
+    "is_new": true
+  },
+  {
+    "level": "critical",
+    "role": "Maya",
+    "location": "app/llm.js:10-31",
+    "suggestion": "`app/llm.js` 中實現的 API Key 輪替功能是本次改動的核心，但目前缺少對應的單元測試。請務必在 `app/llm.test.js` 中新增全面的測試案例，以驗證 `TODO.md` 中「階段八：API Key 輪替」的所有驗收標準：\n*   **單一 Key 成功**：傳入單一有效 Key 時，確保行為與原本相同。\n*   **多個 Key 輪替成功**：驗證當前 N-1 個 Key 失敗，第 N 個 Key 成功時，系統能依序嘗試並最終成功。\n*   **所有 Key 失敗**：驗證當所有傳入的 Key 都失敗時，系統能正確記錄每次失敗，並最終呼叫 `process.exit(1)` 終止流程（測試時需模擬 `process.exit` 以捕獲其調用）。\n*   **日誌訊息**：驗證在 Key 失敗時，能正確輸出「key[N/M] 失敗」的日誌；所有 Key 失敗時，能輸出「所有 API Key 均失敗，終止流程」。\n*   **錯誤處理**：模擬不同類型的 API 錯誤（例如 401 Unauthorized, 429 Too Many Requests, 網路超時等），確保 Key 輪替機制能穩健處理。",
+    "is_new": true
+  },
   {
     "level": "warning",
     "role": "Zara",
@@ -11,27 +39,20 @@
     "role": "Aria",
     "location": ".gitea/workflows/master.yaml",
     "suggestion": "檔案結尾應包含一個換行符號 (newline at EOF)，這是 POSIX 系統的慣例，有助於版本控制系統的正確處理。",
+    "is_new": false
+  },
+  {
+    "level": "warning",
+    "role": "Leo",
+    "location": ".gitea/workflows/review.yaml:36",
+    "suggestion": "GEMINI_API_KEY 的值過長，影響可讀性。雖然這是為了傳遞多個 Secret，但建議考慮是否有其他方式可以讓設定檔更簡潔，例如將多個 Secret 組合為一個，或在 Action 內部處理多個獨立的 Secret 變數（如果 Action 支援）。如果沒有其他方式，請考慮將其分行以提高可讀性（雖然 YAML 可能會將其視為單行）。",
     "is_new": true
   },
   {
     "level": "warning",
-    "role": "Aria",
-    "location": "Dockerfile",
-    "suggestion": "檔案結尾應包含一個換行符號 (newline at EOF)，這是 POSIX 系統的慣例，有助於版本控制系統的正確處理。",
-    "is_new": true
-  },
-  {
-    "level": "warning",
-    "role": "Aria",
-    "location": "TODO.md",
-    "suggestion": "檔案結尾應包含一個換行符號 (newline at EOF)，這是 POSIX 系統的慣例，有助於版本控制系統的正確處理。",
-    "is_new": true
-  },
-  {
-    "level": "warning",
-    "role": "Aria",
-    "location": "entrypoint.sh",
-    "suggestion": "檔案結尾應包含一個換行符號 (newline at EOF)，這是 POSIX 系統的慣例，有助於版本控制系統的正確處理。",
+    "role": "Maya",
+    "location": "app/llm.js",
+    "suggestion": "`chatJSON` 函數依賴於 `chat` 函數的 API Key 輪替邏輯。為確保在處理 JSON 格式回應時，API Key 輪替機制也能正常運作，建議在 `app/llm.test.js` 中為 `chatJSON` 函數新增至少一個測試案例，特別是針對 Key 輪替失敗或成功後的行為進行驗證。",
     "is_new": true
   }
 ]

.gitea/workflows/review.yaml

@@ -33,9 +33,9 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@v${{ needs.version.outputs.version }}
       with:
-        GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }},${{ secrets.GEMINI_API_KEY_1 }},${{ secrets.GEMINI_API_KEY_2 }},${{ secrets.GEMINI_API_KEY_3 }},${{ secrets.GEMINI_API_KEY_4 }},${{ secrets.GEMINI_API_KEY_5 }},${{ secrets.GEMINI_API_KEY_6 }},${{ secrets.GEMINI_API_KEY_7 }},${{ secrets.GEMINI_API_KEY_8 }},${{ secrets.GEMINI_API_KEY_9 }}
-        GEMINI_BASE_URL: https://generativelanguage.googleapis.com/v1beta
-        GEMINI_MODEL: ${{ vars.GEMINI_MODEL }}
+        OPENAI_API_KEY: ${{ secrets.OPENROUTER_API_KEY }},${{ secrets.OPENROUTER_API_KEY_1 }}
+        OPENAI_BASE_URL: https://openrouter.ai/api/v1
+        OPENAI_MODEL: ${{ vars.OPENROUTER_MODEL }}
     permissions:
       contents: write
       pull-requests: write

.gitignore

@@ -0,0 +1 @@
+app/node_modules/

README.md

@@ -66,7 +66,7 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@${{ vars.ACTION_CODE_REVIEW_VERSION }}
       with:
-        OPENAI_API_KEY: ${{ secrets.OPENROUTER_API_KEY }}  # OpenRouter 使用 OpenAI 相容介面，以 OPENAI_API_KEY 傳入，支援逗號分隔多個 Key
+        OPENAI_API_KEY: ${{ secrets.OPENROUTER_API_KEY }},${{ secrets.OPENROUTER_API_KEY_1 }}
         OPENAI_BASE_URL: https://openrouter.ai/api/v1
         OPENAI_MODEL: ${{ vars.OPENROUTER_MODEL }}
     permissions:

app/llm.js

@@ -1,9 +1,6 @@
 import axios from 'axios';
-import https from 'https';
 import { getLLMConfig } from './config.js';
 
-const httpsAgent = new https.Agent({ rejectUnauthorized: false });
-
 export async function chat(systemPrompt, userContent) {
   const { provider, apiKeys, baseURL, model } = getLLMConfig();
   if (!provider) throw new Error('未設定任何 LLM API Key');
@@ -15,12 +12,12 @@ export async function chat(systemPrompt, userContent) {
 
   let lastError;
   for (let i = 0; i < apiKeys.length; i++) {
-    headers['Authorization'] = `Bearer ${apiKeys[i]}`;
+    if (provider !== 'ollama') headers['Authorization'] = `Bearer ${apiKeys[i]}`;
     try {
       const resp = await axios.post(
         `${baseURL.replace(/\/$/, '')}/chat/completions`,
         { model, messages: [{ role: 'system', content: systemPrompt }, { role: 'user', content: userContent }], temperature: 0.2 },
-        { headers, timeout: 120000, httpsAgent }
+        { headers, timeout: 30000 }
       );
       return resp.data.choices[0].message.content;
     } catch (e) {

app/llm.test.js

@@ -0,0 +1,128 @@
+import { describe, it, beforeEach, afterEach, mock } from 'node:test';
+import assert from 'node:assert/strict';
+
+// Mock axios before importing llm.js
+import axios from 'axios';
+
+const ENV_KEYS = [
+  'OPENAI_API_KEY', 'OPENAI_BASE_URL', 'OPENAI_MODEL',
+  'GEMINI_API_KEY', 'GEMINI_BASE_URL', 'GEMINI_MODEL',
+  'CLAUDE_API_KEY', 'CLAUDE_BASE_URL', 'CLAUDE_MODEL',
+  'OLLAMA_BASE_URL', 'OLLAMA_MODEL',
+  'AMAZONQ_API_KEY', 'AMAZONQ_BASE_URL', 'AMAZONQ_MODEL',
+];
+
+let saved = {};
+beforeEach(() => {
+  saved = {};
+  for (const k of ENV_KEYS) { saved[k] = process.env[k]; delete process.env[k]; }
+});
+afterEach(() => {
+  for (const k of ENV_KEYS) {
+    if (saved[k] === undefined) delete process.env[k];
+    else process.env[k] = saved[k];
+  }
+  mock.restoreAll();
+});
+
+function mockAxiosPost(responses) {
+  let call = 0;
+  mock.method(axios, 'post', async () => {
+    const r = responses[call++] ?? responses[responses.length - 1];
+    if (r instanceof Error) throw r;
+    return r;
+  });
+}
+
+function makeOkResponse(content = 'ok') {
+  return { data: { choices: [{ message: { content } }] } };
+}
+
+describe('chat - key rotation', async () => {
+  const { chat } = await import('./llm.js');
+
+  it('succeeds on first key', async () => {
+    process.env.OPENAI_API_KEY = 'key1';
+    mockAxiosPost([makeOkResponse('hello')]);
+    const result = await chat('sys', 'user');
+    assert.equal(result, 'hello');
+  });
+
+  it('rotates to second key when first fails', async () => {
+    process.env.OPENAI_API_KEY = 'key1,key2';
+    mockAxiosPost([new Error('rate limit'), makeOkResponse('from key2')]);
+    const result = await chat('sys', 'user');
+    assert.equal(result, 'from key2');
+  });
+
+  it('rotates through all keys and succeeds on last', async () => {
+    process.env.OPENAI_API_KEY = 'k1,k2,k3';
+    mockAxiosPost([new Error('fail'), new Error('fail'), makeOkResponse('from k3')]);
+    const result = await chat('sys', 'user');
+    assert.equal(result, 'from k3');
+  });
+
+  it('calls process.exit(1) when all keys fail', async () => {
+    process.env.OPENAI_API_KEY = 'k1,k2';
+    mockAxiosPost([new Error('fail'), new Error('fail')]);
+    const exitMock = mock.method(process, 'exit', () => { throw new Error('exit:1'); });
+    await assert.rejects(() => chat('sys', 'user'), /exit:1/);
+    assert.equal(exitMock.mock.calls[0].arguments[0], 1);
+  });
+
+  it('does not set Authorization header for ollama', async () => {
+    process.env.OLLAMA_BASE_URL = 'http://localhost:11434/v1';
+    process.env.OLLAMA_MODEL = 'llama3';
+    let capturedHeaders;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedHeaders = opts.headers;
+      return makeOkResponse('ollama response');
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedHeaders['Authorization'], undefined);
+  });
+
+  it('sets Authorization header for openai', async () => {
+    process.env.OPENAI_API_KEY = 'sk-test';
+    let capturedHeaders;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedHeaders = opts.headers;
+      return makeOkResponse();
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedHeaders['Authorization'], 'Bearer sk-test');
+  });
+
+  it('uses 30s timeout', async () => {
+    process.env.OPENAI_API_KEY = 'sk-test';
+    let capturedOpts;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedOpts = opts;
+      return makeOkResponse();
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedOpts.timeout, 30000);
+  });
+
+  it('does not pass httpsAgent to axios', async () => {
+    process.env.OPENAI_API_KEY = 'sk-test';
+    let capturedOpts;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedOpts = opts;
+      return makeOkResponse();
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedOpts.httpsAgent, undefined);
+  });
+
+  it('sets anthropic-version header for claude', async () => {
+    process.env.CLAUDE_API_KEY = 'claude-key';
+    let capturedHeaders;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedHeaders = opts.headers;
+      return makeOkResponse();
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedHeaders['anthropic-version'], '2023-06-01');
+  });
+});

app/package-lock.json

@@ -0,0 +1,468 @@
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+  "version": "1.0.0",
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+  "requires": true,
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+        "js-yaml": "^4.1.0",
+        "openai": "^4.28.0"
+      }
+    },
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+      "dependencies": {
+        "undici-types": "~5.26.4"
+      }
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+}

app/package.json

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "type": "module",
   "scripts": {
-    "test": "node --test app/git.test.js"
+    "test": "node --test git.test.js config.test.js llm.test.js"
   },
   "dependencies": {
     "axios": "^1.6.7",