修正学习会话计时指针与时间单位定义

src/main/java/com/guo/learningprogresstracker/dto/response/StudySessionResponse.java

@@ -28,11 +28,11 @@ public class StudySessionResponse {
     private LocalDateTime endTime;
 
 
-    @Schema(description = "实际使用时间（分钟）")
+    @Schema(description = "实际使用时间（秒）")
     private double actualTime;
 
 
-    @Schema(description = "有效学习时间（分钟）")
+    @Schema(description = "有效学习时间（秒）")
     private double effectiveTime;
 
 
@@ -43,7 +43,7 @@ public class StudySessionResponse {
     @Schema(description = "学习会话的状态（进行中、暂停、已结束）")
     private String sessionState;
 
-    @Schema(description = "倒计时开始位置（S）")
+    @Schema(description = "倒计时指针位置（毫秒）")
     private double pointerPosition;
 
     @Schema(description = "系统提示")

src/main/java/com/guo/learningprogresstracker/entity/StudySessionsEntity.java

@@ -95,6 +95,8 @@ public class StudySessionsEntity extends BaseEntity implements Serializable {
         StudySessionsEntity studySessionsEntity = new StudySessionsEntity();
         studySessionsEntity.setSessionNum(GenerateNumTool.generateNum("SESSION"));
         studySessionsEntity.setStartTime(LocalDateTime.now());
+        studySessionsEntity.setLastStartTime(LocalDateTime.now());
+        studySessionsEntity.setPointerPosition(WORK_DURATION * 60 * 1000L);
         studySessionsEntity.setLastModifiedTime(LocalDateTime.now());
         studySessionsEntity.setSessionState(StudySessionStateEnum.ONGOING.name());
         return studySessionsEntity;
@@ -150,13 +152,7 @@ public class StudySessionsEntity extends BaseEntity implements Serializable {
      * @return
      */
     public boolean isFirstRun() {
-        if (ObjectUtils.isEmpty(this.lastStartTime)) {
+        return ObjectUtils.isEmpty(this.pointerPosition);
-            return false;
-        } else if (this.lastStartTime.equals(this.startTime)) {
-            return true;
-        } else {
-            return false;
-        }
     }
 
 
@@ -187,10 +183,13 @@ public class StudySessionsEntity extends BaseEntity implements Serializable {
 
                 case ONGOING:
                     long elapsedMillis = Duration.between(lastStartTime, LocalDateTime.now()).toMillis();
-                    long newPointerPosition = pointerPosition - elapsedMillis;
+                    long basePointerPosition = ObjectUtils.isEmpty(pointerPosition)
+                            ? WORK_DURATION * 60 * 1000L
+                            : pointerPosition;
+                    long newPointerPosition = basePointerPosition - elapsedMillis;
                     if (newPointerPosition <= 0) {
                         // 如果循环已经结束，则需要重置指针位置
-                        this.pointerPosition = WORK_DURATION * 1000L;
+                        this.pointerPosition = WORK_DURATION * 60 * 1000L;
                     } else {
                         this.pointerPosition = newPointerPosition;
                     }