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package filesystem
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import (
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"context"
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"fmt"
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model "github.com/HFO4/cloudreve/models"
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"github.com/HFO4/cloudreve/pkg/serializer"
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"github.com/HFO4/cloudreve/pkg/util"
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"path"
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"sync"
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)
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/* =================
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路径/目录相关
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=================
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*/
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// Object 文件或者目录
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type Object struct {
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ID uint `json:"id"`
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Name string `json:"name"`
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Path string `json:"path"`
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Pic string `json:"pic"`
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Size uint64 `json:"size"`
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Type string `json:"type"`
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Date string `json:"date"`
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}
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// Rename 重命名对象
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func (fs *FileSystem) Rename(ctx context.Context, src, new string) (err error) {
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// 验证新名字
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if !fs.ValidateLegalName(ctx, new) || !fs.ValidateExtension(ctx, new) {
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return ErrIllegalObjectName
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}
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// 如果源对象是文件
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fileExist, file := fs.IsFileExist(src)
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if fileExist {
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err = file.Rename(new)
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return err
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}
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// 源对象是目录
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folderExist, folder := fs.IsPathExist(src)
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if folderExist {
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err = folder.Rename(new)
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return err
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}
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return ErrPathNotExist
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}
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// Copy 复制src目录下的文件或目录到dst
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func (fs *FileSystem) Copy(ctx context.Context, dirs, files []string, src, dst string) error {
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// 获取目的目录
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isDstExist, dstFolder := fs.IsPathExist(dst)
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isSrcExist, srcFolder := fs.IsPathExist(src)
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// 不存在时返回空的结果
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if !isDstExist || !isSrcExist {
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return ErrPathNotExist
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}
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// 记录复制的文件的总容量
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var newUsedStorage uint64
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// 复制目录
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if len(dirs) > 0 {
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subFileSizes, err := srcFolder.MoveOrCopyFolderTo(dirs, dstFolder, true)
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if err != nil {
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return serializer.NewError(serializer.CodeDBError, "操作失败,可能有重名冲突", err)
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}
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newUsedStorage += subFileSizes
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}
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// 复制文件
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if len(files) > 0 {
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subFileSizes, err := srcFolder.MoveOrCopyFileTo(files, dstFolder, true)
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if err != nil {
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return serializer.NewError(serializer.CodeDBError, "操作失败,可能有重名冲突", err)
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}
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newUsedStorage += subFileSizes
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}
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// 扣除容量
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fs.User.IncreaseStorageWithoutCheck(newUsedStorage)
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return nil
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}
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// Move 移动文件和目录
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func (fs *FileSystem) Move(ctx context.Context, dirs, files []string, src, dst string) error {
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// 获取目的目录
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isDstExist, dstFolder := fs.IsPathExist(dst)
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isSrcExist, srcFolder := fs.IsPathExist(src)
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// 不存在时返回空的结果
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if !isDstExist || !isSrcExist {
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return ErrPathNotExist
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}
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// 处理目录及子文件移动
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_, err := srcFolder.MoveOrCopyFolderTo(dirs, dstFolder, false)
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if err != nil {
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return serializer.NewError(serializer.CodeDBError, "操作失败,可能有重名冲突", err)
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}
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// 处理文件移动
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_, err = srcFolder.MoveOrCopyFileTo(files, dstFolder, false)
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if err != nil {
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return serializer.NewError(serializer.CodeDBError, "操作失败,可能有重名冲突", err)
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}
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// 移动文件
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return err
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}
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// Delete 递归删除对象
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func (fs *FileSystem) Delete(ctx context.Context, dirs, files []string) error {
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// 已删除的总容量,map用于去重
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var deletedStorage = make(map[uint]uint64)
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// 已删除的文件ID
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var deletedFileIDs = make([]uint, 0, len(fs.FileTarget))
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// 删除失败的文件的父目录ID
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// 所有文件的ID
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var allFileIDs = make([]uint, 0, len(fs.FileTarget))
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// 列出要删除的目录
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if len(dirs) > 0 {
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err := fs.ListDeleteDirs(ctx, dirs)
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if err != nil {
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return err
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}
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}
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// 列出要删除的文件
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if len(files) > 0 {
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err := fs.ListDeleteFiles(ctx, files)
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if err != nil {
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return err
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}
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}
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// 去除待删除文件中包含软连接的部分
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filesToBeDelete, err := model.RemoveFilesWithSoftLinks(fs.FileTarget)
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if err != nil {
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return ErrDBListObjects.WithError(err)
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}
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// 根据存储策略将文件分组
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policyGroup := fs.GroupFileByPolicy(ctx, filesToBeDelete)
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// 按照存储策略分组删除对象
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failed := fs.deleteGroupedFile(ctx, policyGroup)
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for i := 0; i < len(fs.FileTarget); i++ {
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if util.ContainsString(failed[fs.FileTarget[i].PolicyID], fs.FileTarget[i].SourceName) {
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// TODO 删除失败时不删除文件记录及父目录
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} else {
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deletedFileIDs = append(deletedFileIDs, fs.FileTarget[i].ID)
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}
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deletedStorage[fs.FileTarget[i].ID] = fs.FileTarget[i].Size
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allFileIDs = append(allFileIDs, fs.FileTarget[i].ID)
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}
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// 删除文件记录
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err = model.DeleteFileByIDs(allFileIDs)
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if err != nil {
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return ErrDBDeleteObjects.WithError(err)
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}
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// 归还容量
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var total uint64
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for _, value := range deletedStorage {
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total += value
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}
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fs.User.DeductionStorage(total)
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// 删除目录
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var allFolderIDs = make([]uint, 0, len(fs.DirTarget))
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for _, value := range fs.DirTarget {
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allFolderIDs = append(allFolderIDs, value.ID)
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}
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err = model.DeleteFolderByIDs(allFolderIDs)
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if err != nil {
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return ErrDBDeleteObjects.WithError(err)
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}
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if notDeleted := len(fs.FileTarget) - len(deletedFileIDs); notDeleted > 0 {
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return serializer.NewError(serializer.CodeNotFullySuccess, fmt.Sprintf("有 %d 个文件未能成功删除,已删除它们的文件记录", notDeleted), nil)
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}
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return nil
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}
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// ListDeleteDirs 递归列出要删除目录,及目录下所有文件
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func (fs *FileSystem) ListDeleteDirs(ctx context.Context, dirs []string) error {
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// 列出所有递归子目录
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folders, err := model.GetRecursiveChildFolder(dirs, fs.User.ID, true)
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if err != nil {
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return ErrDBListObjects.WithError(err)
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}
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fs.SetTargetDir(&folders)
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// 检索目录下的子文件
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files, err := model.GetChildFilesOfFolders(&folders)
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if err != nil {
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return ErrDBListObjects.WithError(err)
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}
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fs.SetTargetFile(&files)
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return nil
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}
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// ListDeleteFiles 根据给定的路径列出要删除的文件
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func (fs *FileSystem) ListDeleteFiles(ctx context.Context, paths []string) error {
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files, err := model.GetFileByPaths(paths, fs.User.ID)
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if err != nil {
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return ErrDBListObjects.WithError(err)
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}
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fs.SetTargetFile(&files)
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return nil
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}
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// List 列出路径下的内容,
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// pathProcessor为最终对象路径的处理钩子。
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// 有些情况下(如在分享页面列对象)时,
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// 路径需要截取掉被分享目录路径之前的部分。
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func (fs *FileSystem) List(ctx context.Context, dirPath string, pathProcessor func(string) string) ([]Object, error) {
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// 获取父目录
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isExist, folder := fs.IsPathExist(dirPath)
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// 不存在时返回空的结果
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if !isExist {
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return []Object{}, nil
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}
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var wg sync.WaitGroup
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var childFolders []model.Folder
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var childFiles []model.File
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wg.Add(2)
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// 获取子目录
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go func() {
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childFolders, _ = folder.GetChildFolder()
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wg.Done()
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}()
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// 获取子文件
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go func() {
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childFiles, _ = folder.GetChildFile()
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wg.Done()
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}()
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// 汇总处理结果
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wg.Wait()
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objects := make([]Object, 0, len(childFiles)+len(childFolders))
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// 所有对象的父目录
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var processedPath string
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for _, folder := range childFolders {
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// 路径处理钩子,
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// 所有对象父目录都是一样的,所以只处理一次
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if processedPath == "" {
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if pathProcessor != nil {
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processedPath = pathProcessor(folder.Position)
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} else {
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processedPath = folder.Position
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}
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}
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objects = append(objects, Object{
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ID: folder.ID,
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Name: folder.Name,
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Path: processedPath,
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Pic: "",
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Size: 0,
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Type: "dir",
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Date: folder.CreatedAt.Format("2006-01-02 15:04:05"),
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})
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}
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for _, file := range childFiles {
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if processedPath == "" {
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if pathProcessor != nil {
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processedPath = pathProcessor(file.Dir)
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} else {
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processedPath = file.Dir
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}
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}
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objects = append(objects, Object{
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ID: file.ID,
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Name: file.Name,
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Path: processedPath,
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Pic: file.PicInfo,
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Size: file.Size,
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Type: "file",
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Date: file.CreatedAt.Format("2006-01-02 15:04:05"),
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})
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}
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return objects, nil
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}
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// CreateDirectory 根据给定的完整创建目录,不会递归创建
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func (fs *FileSystem) CreateDirectory(ctx context.Context, fullPath string) error {
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// 获取要创建目录的父路径和目录名
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fullPath = path.Clean(fullPath)
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base := path.Dir(fullPath)
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dir := path.Base(fullPath)
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// 检查目录名是否合法
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if !fs.ValidateLegalName(ctx, dir) {
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return ErrIllegalObjectName
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}
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// 父目录是否存在
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isExist, parent := fs.IsPathExist(base)
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if !isExist {
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return ErrPathNotExist
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}
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// 是否有同名目录
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// TODO: 有了unique约束后可以不用在此检查
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b, _ := fs.IsPathExist(fullPath)
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if b {
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return ErrFolderExisted
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}
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// 是否有同名文件
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if ok, _ := fs.IsFileExist(path.Join(base, dir)); ok {
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return ErrFileExisted
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}
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// 创建目录
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newFolder := model.Folder{
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Name: dir,
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ParentID: parent.ID,
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Position: base,
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PositionAbsolute: fullPath,
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OwnerID: fs.User.ID,
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}
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_, err := newFolder.Create()
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return err
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}
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// IsPathExist 返回给定目录是否存在
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// 如果存在就返回目录
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func (fs *FileSystem) IsPathExist(path string) (bool, *model.Folder) {
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folder, err := model.GetFolderByPath(path, fs.User.ID)
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return err == nil, &folder
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}
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// IsFileExist 返回给定路径的文件是否存在
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func (fs *FileSystem) IsFileExist(fullPath string) (bool, *model.File) {
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basePath := path.Dir(fullPath)
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fileName := path.Base(fullPath)
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file, err := model.GetFileByPathAndName(basePath, fileName, fs.User.ID)
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return err == nil, &file
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}
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