Lawschool Video Autopilot

律师云学院视频自动播放

Automates video playback across multiple courses on lawschool.lawyerpass.com using the browser tool (Chrome profile via Browser Relay) and a persistent state file + cron job for long-running monitoring.

Architecture

• State file (video_state.json): tracks progress, current video, queue
• Cron job (video-check-loop): fires every 8 minutes, checks video status, switches when done
• Browser tool: profile=chrome, targetId from state file

Quick Start

1. Read references/workflow.md for the full step-by-step procedure
2. Read references/known-issues.md for critical gotchas before starting

Key Facts

• Site: https://lawschool.lawyerpass.com
• Course list page: /course/list
• Course detail URL: /course/detail?courseId=<id>
• Card selector: app-lesson-card.square-item
• Video element: document.querySelector('video')

Getting courseId (critical)

Course cards use Angular Router — no href on <a> tags. Intercept history.pushState:

let captured = '';
const orig = window.history.pushState.bind(window.history);
window.history.pushState = function(s, t, url) { captured = url; orig(s, t, url); };
[...document.querySelectorAll('app-lesson-card.square-item')]
  .find(c => c.textContent.includes('课程标题关键词'))
  ?.querySelector('a')?.click();
return captured; // returns "/course/detail?courseId=d5b19f94..."

Then navigate to https://lawschool.lawyerpass.com + captured path.

Enrollment Gate (⚠️ critical)

Some courses from 课程广场 require enrollment before video appears:

// Step 1: Check and click enrollment button
const btn = [...document.querySelectorAll('button, a, [class*=btn]')]
  .find(el => el.textContent.includes('选修并学习'));
if (btn) { btn.click(); return 'clicked_enroll'; }
return 'no_enroll_btn';

If clicked → wait 3s → confirm dialog:

const confirm = [...document.querySelectorAll('button, [class*=btn], [class*=confirm]')]
  .find(el => el.textContent.match(/确定|确认|OK/));
confirm?.click();

Wait 3s more, then video.play().

Video Status Check

const v = document.querySelector('video');
if (!v) return JSON.stringify({ found: false, url: location.href });
return JSON.stringify({
  found: true,
  ct: Math.round(v.currentTime),
  dur: Math.round(v.duration),
  paused: v.paused,
  ended: v.ended,
  url: location.href
});

Completion condition: ended === true OR ct >= dur - 3

Note: Some videos stop with ended=false but ct === dur — always check both.

Cron Job Setup

{
  "schedule": { "kind": "every", "everyMs": 480000 },
  "sessionTarget": "isolated",
  "payload": { "kind": "agentTurn", "timeoutSeconds": 120 }
}

⚠️ Do NOT use everyMs < 300000 (5 min) — causes API rate limit errors.

State File Schema

See references/state-schema.md for the full video_state.json schema. Use scripts/lawschool_init_state.py to generate an initial state file.

Notifications

Use message tool on every video complete and every video start:

• Complete: ✅ 播完：{title}（{done}/{total}）
• Start: ▶ 开始：{title}，{duration}，第{done+1}/{total}门
• All done: 🎉 全部{total}门完成！

Reference Files