🎨 Improve data sync siyuan-note/siyuan#13133

backup.go

@@ -214,7 +214,7 @@ func (repo *Repo) uploadTagIndex(tag, id string, context map[string]interface{})
 	apiPut++
 
 	// 上传标签
-	_, length, err = repo.updateCloudRef("refs/tags/"+tag, context)
+	length, err = repo.updateCloudRef("refs/tags/"+tag, context)
 	uploadFileCount++
 	uploadBytes += length
 	apiPut++

cloud/cloud.go

@@ -287,7 +287,6 @@ var (
 	ErrSystemTimeIncorrect     = errors.New("system time incorrect")     // ErrSystemTimeIncorrect 描述了系统时间不正确的错误
 	ErrDeprecatedVersion       = errors.New("deprecated version")        // ErrDeprecatedVersion 描述了版本过低的错误
 	ErrCloudCheckFailed        = errors.New("cloud check failed")        // ErrCloudCheckFailed 描述了云端存储服务检查失败的错误
-	ErrCloudIndexChanged       = errors.New("cloud index changed")       // ErrCloudIndexChanged 描述了云端快照已变更的错误
 	ErrCloudForbidden          = errors.New("cloud forbidden")           // ErrCloudForbidden 描述了云端存储服务禁止访问的错误
 	ErrCloudTooManyRequests    = errors.New("cloud too many requests")   // ErrCloudTooManyRequests 描述了云端存储服务请求过多的错误
 )

repo.go

@@ -969,7 +969,28 @@ func (repo *Repo) openFile(file *entity.File) (ret []byte, err error) {
 	return
 }
 
+func (repo *Repo) removeFiles(files []*entity.File, context map[string]interface{}) (err error) {
+	total := len(files)
+	if 1 > total {
+		return
+	}
+
+	eventbus.Publish(eventbus.EvtCheckoutRemoveFiles, context, total)
+	for i, file := range files {
+		absPath := repo.absPath(file.Path)
+		if err = filelock.Remove(absPath); nil != err {
+			return
+		}
+		eventbus.Publish(eventbus.EvtCheckoutRemoveFile, context, i+1, total)
+	}
+	return
+}
+
 func (repo *Repo) checkoutFiles(files []*entity.File, context map[string]interface{}) (err error) {
+	if 1 > len(files) {
+		return
+	}
+
 	//now := time.Now()
 
 	var dotSiYuans, assets, emojis, storage, plugins, widgets, templates, public, others, all []*entity.File