仓库初始提交

.gitignore

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+# git
+.git/
+
+# backup
+*.bak
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+node_modules/
+
+yarn.lock
+package-lock.json

LICENSE

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+MIT License
+
+Copyright (c) 2023 guobao2333
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# DeepLX Serverless
+
+DeepLX 免费翻译API**函数部署版**，与[原项目DeepLX](https://github.com/OwO-Network/DeepLX)的区别在于**利用了云函数的请求IP不固定的特性，极大程度上避免了`429`请求太频繁报错**
+
+## Usage | 用法
+
+### Prerequisites | 你需要准备什么
+
+- 一双灵活的小手
+- 一个聪明的脑袋瓜
+- 一个云函数服务器
+
+### Deploy | 部署
+
+使用任意支持云函数部署的服务器，比如可以使用vercel进行部署，不过由于时间关系，部署教程和一键部署会在后续完善。
+
+### How To Use | 如何使用
+
+使用post通过 `域名` + `/translate` + `json请求体` 这样的形式获取json响应。
+
+请求示例：
+
+``` bash
+curl --location --request POST 'https://YOUR-DOMAIN/api/translate' \
+--header 'Content-Type: application/json' \
+--data-raw '{
+    "text": "Hello, World!",
+    "source_lang": "en",
+    "target_lang": "de"
+}'
+```
+直接复制到命令行测试：
+
+<details>
+<summary>点击展开</summary>
+
+``` bash
+curl --location 'https://YOUR-DOMAIN/translate' --header 'Content-Type: application/json' --data '{"text": "你好，世界", "source_lang": "zh", "target_lang": "en"}'
+```
+</details>
+
+响应示例：
+
+``` json
+{
+  "code": 200,
+  "message": "success",
+  "data": "Hello, world.",
+  "source_lang": "zh",
+  "target_lang": "en",
+  "alternatives": ["Hello, World.", "Hello, world!", "Hi, world."]
+}
+```
+
+请修改`YOUR-DOMAIN`为你部署服务的域名，建议搭配浏览器插件沉浸式翻译一同使用。
+
+#### 沉浸式翻译设置
+
+1. 在浏览器上安装最新的 [沉浸式翻译](https://github.com/immersive-translate/immersive-translate/releases)。
+2. 点击左下角的 "开发者设置"。启用测试版实验功能。
+3. 翻译服务选中 `DeepLX(beta)`
+3. 设置 URL 为刚才获取的访问路径（需带translate）。
+
+![沉浸式翻译](https://github.com/LegendLeo/deeplx-serverless/assets/25115173/d3affe2b-9e99-4d5c-bc8c-cd67e70d0368)
+
+## 自托管
+
+尽管本项目是专为 serverless 适配的方案，但是也能使用自己提供服务器进行部署
+
+``` bash
+git clone https://github.com/guobao/deeplx-serverless
+cd deeplx-serverless
+npm install
+npm run start
+```
+
+## 鸣谢
+1. [OwO-Network/DeepLX](https://github.com/OwO-Network/DeepLX)
+2. [LegendLeo/deeplx-serverless](https://github.com/LegendLeo/deeplx-serverless)
+3. [bropines/Deeplx-vercel](https://github.com/bropines/Deeplx-vercel)

index.js

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+module.exports = (req, res) => {
+  res.json({
+    code: 200,
+    message: "Welcome to the DeepL Free API. Please POST to /translate. Visit http://github.com/OwO-Network/DeepLX for more information."
+  });
+};

package.json

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+{
+  "name": "deeplx-serverless",
+  "version": "1.0.0",
+  "description": "DeepLX Free API for serverless",
+  "main": "translate.js",
+  "scripts": {
+    "start": "node server.js",
+    "test": "node test.js"
+  },
+  "keywords": [
+    "deeplx",
+    "deepl",
+    "translate",
+    "serverless"
+  ],
+  "license": "MIT",
+  "dependencies": {
+    "axios": "^1.6.3",
+    "body-parser": "^1.20.2",
+    "express": "^4.18.2",
+    "lodash": "^4.17.21",
+    "random-int": "^3.0.0"
+  }
+}

server.js

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+const express = require('express');
+const bodyParser = require('body-parser');
+const { translate } = require('./translate');
+
+const app = express();
+const PORT = 9000;
+
+app.use(bodyParser.json());
+
+app.post('/translate', async (req, res) => {
+  const { text, source_lang, target_lang } = req.body;
+
+  try {
+    const result = await translate(text, source_lang, target_lang);
+    const responseData = {
+      alternatives: result.alternatives,
+      code: 200,
+      data: result.text, // 取第一个翻译结果
+      id: Math.floor(Math.random() * 10000000000), // 生成一个随机 ID
+      method: 'Free',
+      source_lang,
+      target_lang,
+    };
+
+    res.json(responseData);
+  } catch (error) {
+    res.status(500).json({ error: 'Translation failed' });
+  }
+});
+
+app.listen(PORT, () => {
+  console.log(`Server is running on http://localhost:${PORT}`);
+});

test.js

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+const translate = require('./translate');
+
+;(async () => {
+  // Example Call
+  console.log(await translate('你好，我是练习时长两年半的个人练习生', 'ZH', 'EN', true, true));
+  console.log(
+    await translate(
+      'Generate a cryptographically strong random string',
+      'EN',
+      'ZH',
+      true,
+      true
+    )
+  );
+})()

translate.js

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+const axios = require('axios').default;
+const { random } = require('lodash');
+
+const DEEPL_BASE_URL = 'https://www2.deepl.com/jsonrpc';
+const headers = {
+  'Content-Type': 'application/json',
+  Accept: '*/*',
+  'x-app-os-name': 'iOS',
+  'x-app-os-version': '16.3.0',
+  'Accept-Language': 'en-US,en;q=0.9',
+  'Accept-Encoding': 'gzip, deflate, br',
+  'x-app-device': 'iPhone13,2',
+  'User-Agent': 'DeepL-iOS/2.9.1 iOS 16.3.0 (iPhone13,2)',
+  'x-app-build': '510265',
+  'x-app-version': '2.9.1',
+  Connection: 'keep-alive',
+};
+
+function getICount(translateText) {
+  return (translateText || '').split('i').length - 1;
+}
+
+function getRandomNumber() {
+  return random(8300000, 8399998) * 1000;
+}
+
+function getTimestamp(iCount) {
+  const ts = Date.now();
+  if (iCount === 0) {
+    return ts;
+  }
+  iCount++;
+  return ts - (ts % iCount) + iCount;
+}
+
+async function translate(
+  text,
+  sourceLang = 'AUTO',
+  targetLang = 'ZH',
+  numberAlternative = 0,
+  printResult = false,
+) {
+  const iCount = getICount(text);
+  const id = getRandomNumber();
+
+  numberAlternative = Math.max(Math.min(3, numberAlternative), 0);
+
+  const postData = {
+    jsonrpc: '2.0',
+    method: 'LMT_handle_texts',
+    id: id,
+    params: {
+      texts: [{ text: text, requestAlternatives: numberAlternative }],
+      splitting: 'newlines',
+      lang: {
+        source_lang_user_selected: sourceLang.toUpperCase(),
+        target_lang: targetLang.toUpperCase(),
+      },
+      timestamp: getTimestamp(iCount),
+    },
+  };
+
+  let postDataStr = JSON.stringify(postData);
+
+  if ((id + 5) % 29 === 0 || (id + 3) % 13 === 0) {
+    postDataStr = postDataStr.replace('"method":"', '"method" : "');
+  } else {
+    postDataStr = postDataStr.replace('"method":"', '"method": "');
+  }
+
+  try {
+    const response = await axios.post(DEEPL_BASE_URL, postDataStr, {
+      headers: headers,
+    });
+
+    if (response.status === 429) {
+      throw new Error(
+        `Too many requests, your IP has been blocked by DeepL temporarily, please don't request it frequently in a short time.`
+      );
+    }
+
+    if (response.status !== 200) {
+      console.error('Error', response.status);
+      return;
+    }
+
+    const result = response.data.result.texts[0]
+    if (printResult) {
+      console.log(result);
+    }
+    return result;
+  } catch (err) {
+    console.error(err);
+  }
+}
+
+exports.translate = translate;

vercel.json

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+{
+  "rewrites": [
+    { "source": "/", "destination": "/index.js" }
+  ]
+}