优化学习阶段逻辑，增加文本课件检测和返回准备页面功能

qingshuxuetang_auto_play.user.js

@@ -15,6 +15,8 @@
 
   const url = window.location.href;
   const MIN_STUDY_SECONDS = 5 * 60;
+  const COURSEWARE_DETECT_TIMEOUT_SECONDS = 60;
+  const TEXT_COURSEWARE_SELECTOR = "#easyXDM_default2872_provider";
   console.log("插件加载完成，等待界面渲染");
 
   const parseStudySeconds = (text) => {
@@ -40,6 +42,17 @@
     return studiedSeconds < MIN_STUDY_SECONDS;
   };
 
+  const returnToStudyPage = () => {
+    const backLink = document.querySelector(".back-link");
+
+    if (backLink) {
+      backLink.click();
+      return;
+    }
+
+    history.back();
+  };
+
   const onPageLoad = () => {
     console.log("页面加载完成，开始执行脚本");
 
@@ -80,12 +93,33 @@
     } else if (url.includes("CourseShow")) {
       console.log("进入学习阶段");
       // 学习阶段
+      const showPageStartedAt = Date.now();
       const videoInterval = setInterval(() => {
         const video = document.querySelector("#vjs_video_3_html5_api");
 
         if (!video) {
-          console.error("视频元素未找到，结束脚本");
-          clearInterval(videoInterval);
+          const textCourseware = document.querySelector(TEXT_COURSEWARE_SELECTOR);
+
+          if (textCourseware) {
+            console.log("检测到文本课件，等待5分钟后返回准备页面");
+            clearInterval(videoInterval);
+            setTimeout(() => {
+              console.log("文本课件等待完成，返回准备页面");
+              returnToStudyPage();
+            }, MIN_STUDY_SECONDS * 1000);
+            return;
+          }
+
+          if (
+            Date.now() - showPageStartedAt >
+            COURSEWARE_DETECT_TIMEOUT_SECONDS * 1000
+          ) {
+            console.error("视频和文本课件元素均未找到，结束脚本");
+            clearInterval(videoInterval);
+            return;
+          }
+
+          console.log("课件元素尚未渲染完成，继续等待");
           return;
         }
 
@@ -98,7 +132,7 @@
         if (video.currentTime >= video.duration - 1) {
           console.log("视频播放结束，返回准备页面");
           clearInterval(videoInterval);
-          document.querySelector(".back-link").click();
+          returnToStudyPage();
         }
 
         if (video.playbackRate === 1) {