1. 开始或继续一个【学习会话】API 2. 暂停一个【学习会话】API 3.通过sessionId获取一个【学习会话】API

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

@@ -4,20 +4,23 @@ import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
-import java.io.Serializable;
-import java.time.LocalDateTime;
+import com.guo.learningprogresstracker.enums.StudySessionStateEnum;
 import lombok.Data;
+import lombok.extern.slf4j.Slf4j;
+
+import java.io.Serializable;
+import java.time.Duration;
+import java.time.LocalDateTime;
 
 /**
  * 记录每次学习会话的具体数据
  * @TableName study_sessions
  */
 @TableName(value ="study_sessions")
+@Slf4j
 @Data
 public class StudySessionsEntity extends BaseEntity implements Serializable {
-    /**
-     * 
-     */
+
     @TableId(value = "session_id", type = IdType.AUTO)
     private Integer sessionId;
 
@@ -33,6 +36,9 @@ public class StudySessionsEntity extends BaseEntity implements Serializable {
     @TableField(value = "start_time")
     private LocalDateTime startTime;
 
+    @TableField(value = "last_start_time")
+    private LocalDateTime lastStartTime;
+
     /**
      * 学习结束时间
      */
@@ -66,4 +72,42 @@ public class StudySessionsEntity extends BaseEntity implements Serializable {
 
     @TableField(exist = false)
     private static final long serialVersionUID = 1L;
+
+    /**
+     * 初始化新会话
+     * @return
+     */
+    public static StudySessionsEntity initNewSession(){
+        StudySessionsEntity studySessionsEntity = new StudySessionsEntity();
+        studySessionsEntity.setStartTime(LocalDateTime.now());
+        studySessionsEntity.setLastModifiedTime(LocalDateTime.now());
+        studySessionsEntity.setSessionState(StudySessionStateEnum.ONGOING.name());
+        return studySessionsEntity;
+    }
+
+    /**
+     * 继续会话
+     */
+    public void continueStudySession(){
+        if (this.getSessionState().equals(StudySessionStateEnum.PAUSED.name())){
+            this.setSessionState(StudySessionStateEnum.ONGOING.name());
+            this.setLastStartTime(LocalDateTime.now());
+        }else{
+            log.warn("不应出现的情况：开始了一个状态为【{}】的学习会话",this.getSessionState());
+        }
+    }
+
+    /**
+     * 暂停会话
+     */
+    public void pausedStudySession(){
+        if (this.getSessionState().equals(StudySessionStateEnum.PAUSED.name())){
+            //
+        }else {
+            this.setEndTime(LocalDateTime.now());
+            this.setEffectiveTime((int) Duration.between(this.lastStartTime,this.endTime).toMinutes());
+            this.setActualTime((int) Duration.between(this.endTime,this.startTime).toMinutes());
+            this.setSessionState(StudySessionStateEnum.PAUSED.name());
+        }
+    }
 }