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小鱼/.cdp/cdp-commodity.mjs

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+// 在「商品数据」页（隐藏标签页，按需创建）上下文执行 JS
+// 用法: node cdp-commodity.mjs <表达式文件> <输出文件> [--close]
+import fs from 'node:fs';
+import path from 'node:path';
+
+const exprFile = process.argv[2];
+const outFile = path.resolve(process.argv[3] || '.cdp/out/commodity.json');
+const doClose = process.argv.includes('--close');
+const expr = fs.readFileSync(exprFile, 'utf8');
+
+const URL_ = 'https://seller.goofish.com/?site=COMMONPRO#/seller-data/commodity';
+const UDD = 'C:\\Users\\Administrator\\AppData\\Local\\Google\\Chrome\\User Data';
+const lines = fs.readFileSync(path.join(UDD, 'DevToolsActivePort'), 'utf8')
+  .split('\n').map(s => s.trim()).filter(Boolean);
+
+class Cdp {
+  constructor(ws) { this.ws = ws; this.seq = 0; this.pending = new Map(); }
+  static async attach(url) {
+    const ws = new WebSocket(url);
+    await new Promise((res, rej) => {
+      const t = setTimeout(() => rej(new Error('ws timeout')), 15000);
+      ws.addEventListener('open', () => { clearTimeout(t); res(); }, { once: true });
+      ws.addEventListener('error', () => { clearTimeout(t); rej(new Error('ws error')); }, { once: true });
+    });
+    const c = new Cdp(ws);
+    ws.addEventListener('message', (ev) => {
+      let m; try { m = JSON.parse(ev.data); } catch { return; }
+      if (m.id && c.pending.has(m.id)) {
+        const p = c.pending.get(m.id); c.pending.delete(m.id); clearTimeout(p.timer);
+        m.error ? p.reject(new Error(m.error.message)) : p.resolve(m.result);
+      }
+    });
+    return c;
+  }
+  send(method, params = {}, sessionId, t = 300000) {
+    const id = ++this.seq;
+    return new Promise((res, rej) => {
+      const timer = setTimeout(() => { this.pending.delete(id); rej(new Error('timeout ' + method)); }, t);
+      this.pending.set(id, { resolve: res, reject: rej, timer });
+      const msg = { id, method, params }; if (sessionId) msg.sessionId = sessionId;
+      this.ws.send(JSON.stringify(msg));
+    });
+  }
+  close() { try { this.ws.close(); } catch {} }
+}
+
+const cdp = await Cdp.attach(`ws://127.0.0.1:${lines[0]}${lines[1]}`);
+let { targetInfos } = await cdp.send('Target.getTargets');
+let page = targetInfos.find(t => t.type === 'page' && /seller\.goofish\.com/.test(t.url) && /seller-data\/commodity/.test(t.url));
+let created = false;
+if (!page) {
+  const r = await cdp.send('Target.createTarget', { url: URL_, background: true });
+  created = true;
+  await new Promise(r2 => setTimeout(r2, 5000));
+  ({ targetInfos } = await cdp.send('Target.getTargets'));
+  page = targetInfos.find(t => t.targetId === r.targetId);
+  if (!page) { console.log('failed to create tab'); process.exit(2); }
+}
+console.log('tab: ' + page.url + (created ? '  (created)' : '  (existing)'));
+
+const { sessionId: S } = await cdp.send('Target.attachToTarget', { targetId: page.targetId, flatten: true });
+const r = await cdp.send('Runtime.evaluate', { expression: expr, returnByValue: true, awaitPromise: true, userGesture: false }, S, 300000);
+
+if (r.exceptionDetails) {
+  const d = { __error: r.exceptionDetails.text, desc: r.exceptionDetails.exception?.description };
+  fs.writeFileSync(outFile, JSON.stringify(d, null, 2), 'utf8');
+  console.log('EXCEPTION: ' + JSON.stringify(d).slice(0, 800));
+  cdp.close(); process.exit(1);
+}
+const v = r.result?.value;
+fs.mkdirSync(path.dirname(outFile), { recursive: true });
+fs.writeFileSync(outFile, JSON.stringify(v, null, 2), 'utf8');
+console.log('written ' + outFile);
+console.log(JSON.stringify(v).slice(0, 2500));
+
+if (doClose) { await cdp.send('Target.closeTarget', { targetId: page.targetId }); console.log('tab closed'); }
+cdp.close();
+process.exit(0);