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src/main/java/com/senmesh/sfile/service/impl/ShareUserFileServiceImpl.java

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+package com.senmesh.sfile.service.impl;
+
+import com.senmesh.common.util.UserContextHolder;
+import com.senmesh.sfile.constant.FileStatusEnum;
+import com.senmesh.sfile.constant.RootTypeEnum;
+import com.senmesh.sfile.dto.ExpandUserFileCreateDTO;
+import com.senmesh.sfile.dto.ShareUserFileCreateDTO;
+import com.senmesh.sfile.service.ShareUserFileService;
+import com.senmesh.sfile.service.UserFileService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Calendar;
+import java.util.Date;
+
+/**
+ * 分享用户文件ServiceImpl
+ */
+@Service
+public class ShareUserFileServiceImpl implements ShareUserFileService {
+
+  @Autowired
+  private UserFileService userFileService;
+
+  @Override
+  @Transactional
+  public Long create(ShareUserFileCreateDTO createDTO) {
+    Long userFileId = createDTO.getUserFileId();
+    Long userId = UserContextHolder.getExistLoginUserId();
+    Integer validDays = createDTO.getValidDays();
+
+    // 根据有效天数计算过期时间
+    Calendar calendar = Calendar.getInstance();
+    calendar.setTime(new Date());
+    calendar.add(Calendar.DAY_OF_MONTH, validDays);
+    Date endTime = calendar.getTime();
+
+    // 调用UserFileService的重载create方法，根据普通文件创建分享文件
+    ExpandUserFileCreateDTO expandCreateDTO = ExpandUserFileCreateDTO.builder()
+        .userFileId(userFileId)
+        .userId(userId)
+        .rootType(RootTypeEnum.SHARE.getType())
+        .fileStatus(FileStatusEnum.NORMAL.getStatus())
+        .endTime(endTime)
+        .build();
+    return userFileService.create(expandCreateDTO);
+  }
+}
+