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server/services/cron_manager.js

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+import cron from 'node-cron';
+
+const task_id_to_cron_job = new Map();
+
+export function stop_all_cron_jobs() {
+  for (const job of task_id_to_cron_job.values()) {
+    job.stop();
+  }
+  task_id_to_cron_job.clear();
+}
+
+export function upsert_cron_job(schedule_task_id, cron_expression, on_tick) {
+  const existing = task_id_to_cron_job.get(schedule_task_id);
+  if (existing) {
+    existing.stop();
+    task_id_to_cron_job.delete(schedule_task_id);
+  }
+
+  const job = cron.schedule(cron_expression, on_tick, { scheduled: true });
+  task_id_to_cron_job.set(schedule_task_id, job);
+}
+
+export function remove_cron_job(schedule_task_id) {
+  const job = task_id_to_cron_job.get(schedule_task_id);
+  if (!job) {
+    return;
+  }
+  job.stop();
+  task_id_to_cron_job.delete(schedule_task_id);
+}

server/services/json_utils.js

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+export function safe_json_stringify(value) {
+  try {
+    return JSON.stringify(value);
+  } catch (err) {
+    return JSON.stringify({ error: 'json_stringify_failed', message: String(err) });
+  }
+}
+
+export function safe_json_parse(text) {
+  if (text === null || text === undefined || text === '') {
+    return null;
+  }
+  try {
+    return JSON.parse(text);
+  } catch (err) {
+    return null;
+  }
+}

server/services/puppeteer_runner.js

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+import dotenv from 'dotenv';
+import path from 'node:path';
+import puppeteer from 'puppeteer';
+
+dotenv.config();
+
+let browser_singleton = null;
+
+function get_action_timeout_ms() {
+  return Number(process.env.ACTION_TIMEOUT_MS || 300000);
+}
+
+function get_crx_src_path() {
+  const crx_src_path = process.env.CRX_SRC_PATH;
+  if (!crx_src_path) {
+    throw new Error('缺少环境变量 CRX_SRC_PATH');
+  }
+  return crx_src_path;
+}
+
+function get_extension_id_from_targets(targets) {
+  for (const target of targets) {
+    const url = target.url();
+    if (!url) continue;
+    if (url.startsWith('chrome-extension://')) {
+      const match = url.match(/^chrome-extension:\/\/([^/]+)\//);
+      if (match && match[1]) return match[1];
+    }
+  }
+  return null;
+}
+
+export async function get_or_create_browser() {
+  if (browser_singleton) {
+    return browser_singleton;
+  }
+
+  const extension_path = path.resolve(get_crx_src_path());
+  const headless = String(process.env.PUPPETEER_HEADLESS || 'false') === 'true';
+
+  browser_singleton = await puppeteer.launch({
+    headless,
+    args: [
+      `--disable-extensions-except=${extension_path}`,
+      `--load-extension=${extension_path}`,
+      '--no-default-browser-check',
+      '--disable-popup-blocking',
+      '--disable-dev-shm-usage'
+    ]
+  });
+
+  return browser_singleton;
+}
+
+export async function invoke_extension_action(action_name, action_payload) {
+  const browser = await get_or_create_browser();
+
+  const page = await browser.newPage();
+  await page.goto('about:blank');
+
+  const targets = await browser.targets();
+  const extension_id = get_extension_id_from_targets(targets);
+  if (!extension_id) {
+    await page.close();
+    throw new Error('未找到扩展 extension_id（请确认 CRX_SRC_PATH 指向 src 且成功加载）');
+  }
+
+  const bridge_url = `chrome-extension://${extension_id}/bridge/bridge.html`;
+  await page.goto(bridge_url, { waitUntil: 'domcontentloaded' });
+
+  const timeout_ms = get_action_timeout_ms();
+  const action_res = await page.evaluate(
+    async (action, payload, timeout) => {
+      function with_timeout(promise, timeout_ms_inner) {
+        return new Promise((resolve, reject) => {
+          const timer = setTimeout(() => reject(new Error('action_timeout')), timeout_ms_inner);
+          promise
+            .then((v) => {
+              clearTimeout(timer);
+              resolve(v);
+            })
+            .catch((e) => {
+              clearTimeout(timer);
+              reject(e);
+            });
+        });
+      }
+
+      if (!window.server_bridge_invoke) {
+        throw new Error('bridge 未注入 window.server_bridge_invoke');
+      }
+
+      return await with_timeout(window.server_bridge_invoke(action, payload), timeout);
+    },
+    action_name,
+    action_payload || {},
+    timeout_ms
+  );
+
+  await page.close();
+  return action_res;
+}

server/services/schedule_loader.js

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+import { schedule_task } from '../models/index.js';
+import { safe_json_parse } from './json_utils.js';
+import { execute_action_and_record } from './task_executor.js';
+import { remove_cron_job, upsert_cron_job } from './cron_manager.js';
+
+export async function reload_all_schedules() {
+  const rows = await schedule_task.findAll();
+
+  for (const row of rows) {
+    if (!row.enabled) {
+      remove_cron_job(row.id);
+      continue;
+    }
+
+    upsert_cron_job(row.id, row.cron_expression, async () => {
+      try {
+        await schedule_task.update(
+          { last_run_at: new Date() },
+          { where: { id: row.id } }
+        );
+
+        await execute_action_and_record({
+          action_name: row.action_name,
+          action_payload: safe_json_parse(row.payload_json) || {},
+          source: 'cron',
+          schedule_task_id: row.id
+        });
+      } catch (err) {
+        // cron 执行失败已在 crawl_run_record 落库，避免重复抛出影响其它任务
+      }
+    });
+  }
+}

server/services/task_executor.js

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+import { crawl_run_record } from '../models/index.js';
+import { safe_json_stringify } from './json_utils.js';
+import { invoke_extension_action } from './puppeteer_runner.js';
+
+export async function execute_action_and_record(params) {
+  const {
+    action_name,
+    action_payload,
+    source,
+    schedule_task_id
+  } = params;
+
+  const request_payload = safe_json_stringify(action_payload || {});
+
+  let ok = false;
+  let result_payload = null;
+  let error_message = null;
+
+  try {
+    const result = await invoke_extension_action(action_name, action_payload || {});
+    ok = true;
+    result_payload = safe_json_stringify(result);
+    return result;
+  } catch (err) {
+    ok = false;
+    error_message = (err && err.message) || String(err);
+    throw err;
+  } finally {
+    await crawl_run_record.create({
+      action_name,
+      request_payload,
+      ok,
+      result_payload,
+      error_message,
+      source,
+      schedule_task_id: schedule_task_id || null
+    });
+  }
+}