const http = require('http');
const https = require('https');
const targetHost = 'dashscope.aliyuncs.com';
const targetPath = '/apps/anthropic/v1/messages';
const server = http.createServer((req, res) => {
    // 處理 OPTIONS 預(yù)檢請求（CORS）
    if (req.method === 'OPTIONS') {
        res.writeHead(200, {
            'Access-Control-Allow-Origin': '*',
            'Access-Control-Allow-Methods': 'POST, OPTIONS',
            'Access-Control-Allow-Headers': '*'
        });
        res.end();
        return;
    }
    // 只處理 POST 請求
    if (req.method !== 'POST') {
        res.writeHead(405);
        res.end('Method Not Allowed');
        return;
    }
    let body = '';
    req.on('data', chunk => { body += chunk; });
    req.on('end', () => {
        // 檢查 body 是否為空
        if (!body || body.trim() === '') {
            console.error('收到空請求體');
            res.writeHead(400);
            res.end('Empty request body');
            return;
        }
        try {
            const originalReq = JSON.parse(body);
            // 修改 max_tokens
            if (originalReq.max_tokens > 8192) {
                originalReq.max_tokens = 8192;
                console.log(`? 調(diào)整 max_tokens 為 8192`);
            }
            // 確保 top_p 等參數(shù)也在范圍內(nèi)
            if (originalReq.top_p && originalReq.top_p > 1) {
                originalReq.top_p = 0.95;
                console.log(`? 調(diào)整 top_p 為 0.95`);
            }
            const options = {
                hostname: targetHost,
                path: targetPath,
                method: 'POST',
                headers: {
                    ...req.headers,
                    'host': targetHost,
                    'content-length': Buffer.byteLength(JSON.stringify(originalReq))
                }
            };
            const proxyReq = https.request(options, (proxyRes) => {
                res.writeHead(proxyRes.statusCode, proxyRes.headers);
                proxyRes.pipe(res);
            });
            proxyReq.write(JSON.stringify(originalReq));
            proxyReq.end();
            console.log(`? 請求轉(zhuǎn)發(fā)成功 - max_tokens: ${originalReq.max_tokens}`);
        } catch(e) {
            console.error('? Proxy error:', e.message);
            console.error('原始 body 內(nèi)容:', body.substring(0, 200));
            res.writeHead(500);
            res.end('Proxy error: ' + e.message);
        }
    });
});
server.listen(8080, () => {
    console.log('? Proxy running on http://localhost:8080');
});

{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "你的apikey",
    "ANTHROPIC_BASE_URL": "http://localhost:8080",
    "ANTHROPIC_MODEL": "qwen3-coder-plus"
  }
}