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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/filesystem/fsctx"
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"github.com/HFO4/cloudreve/pkg/hashid"
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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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"strings"
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)
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/* =================
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文件/目录管理
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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 string `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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Key string `json:"key,omitempty"`
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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, dir, file []uint, 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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if len(file) > 0 {
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fileObject, err := model.GetFilesByIDs([]uint{file[0]}, fs.User.ID)
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if err != nil || len(fileObject) == 0 {
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return ErrPathNotExist
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}
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err = fileObject[0].Rename(new)
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if err != nil {
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return ErrFileExisted
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}
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return nil
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}
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if len(dir) > 0 {
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folderObject, err := model.GetFoldersByIDs([]uint{dir[0]}, fs.User.ID)
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if err != nil || len(folderObject) == 0 {
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return ErrPathNotExist
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}
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err = folderObject[0].Rename(new)
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if err != nil {
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return ErrFileExisted
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}
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return nil
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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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// 暂时只支持单文件
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func (fs *FileSystem) Copy(ctx context.Context, dirs, files []uint, 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.CopyFolderTo(dirs[0], dstFolder)
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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, 将id列表dirs和files从src移动至dst
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func (fs *FileSystem) Move(ctx context.Context, dirs, files []uint, 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.MoveFolderTo(dirs, dstFolder)
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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 []uint) 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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var totalStorage = 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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// 整理删除结果
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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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// 已成功删除的文件
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deletedFileIDs = append(deletedFileIDs, fs.FileTarget[i].ID)
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deletedStorage[fs.FileTarget[i].ID] = fs.FileTarget[i].Size
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}
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// 全部文件
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totalStorage[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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// TODO 用户自主选择是否强制删除
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// 删除文件记录
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err = model.DeleteFileByIDs(deletedFileIDs)
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if err != nil {
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return ErrDBDeleteObjects.WithError(err)
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}
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// 删除文件记录对应的分享记录
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model.DeleteShareBySourceIDs(deletedFileIDs, false)
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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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// 如果文件全部删除成功，继续删除目录
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if len(deletedFileIDs) == len(allFileIDs) {
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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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// 删除目录记录对应的分享记录
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model.DeleteShareBySourceIDs(allFolderIDs, true)
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}
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if notDeleted := len(fs.FileTarget) - len(deletedFileIDs); notDeleted > 0 {
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return serializer.NewError(
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serializer.CodeNotFullySuccess,
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fmt.Sprintf("有 %d 个文件未能成功删除", notDeleted),
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nil,
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)
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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, ids []uint) error {
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// 列出所有递归子目录
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folders, err := model.GetRecursiveChildFolder(ids, 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, ids []uint) error {
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files, err := model.GetFilesByIDs(ids, 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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if !isExist {
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return nil, ErrPathNotExist
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}
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fs.SetTargetDir(&[]model.Folder{*folder})
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var parentPath = path.Join(folder.Position, folder.Name)
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var childFolders []model.Folder
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var childFiles []model.File
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// 获取子目录
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childFolders, _ = folder.GetChildFolder()
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// 获取子文件
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childFiles, _ = folder.GetChildFiles()
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return fs.listObjects(ctx, parentPath, childFiles, childFolders, pathProcessor), nil
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}
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func (fs *FileSystem) listObjects(ctx context.Context, parent string, files []model.File, folders []model.Folder, pathProcessor func(string) string) []Object {
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// 分享文件的ID
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shareKey := ""
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if key, ok := ctx.Value(fsctx.ShareKeyCtx).(string); ok {
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shareKey = key
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}
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// 汇总处理结果
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objects := make([]Object, 0, len(files)+len(folders))
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// 所有对象的父目录
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var processedPath string
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for _, subFolder := range folders {
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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(parent)
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} else {
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processedPath = parent
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}
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}
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objects = append(objects, Object{
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ID: hashid.HashID(subFolder.ID, hashid.FolderID),
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Name: subFolder.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: subFolder.CreatedAt.Format("2006-01-02 15:04:05"),
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})
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}
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for _, file := range files {
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if processedPath == "" {
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if pathProcessor != nil {
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processedPath = pathProcessor(parent)
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} else {
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processedPath = parent
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}
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}
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newFile := Object{
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ID: hashid.HashID(file.ID, hashid.FileID),
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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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if shareKey != "" {
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newFile.Key = shareKey
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}
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objects = append(objects, newFile)
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}
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return objects
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}
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// CreateDirectory 根据给定的完整创建目录，支持递归创建
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func (fs *FileSystem) CreateDirectory(ctx context.Context, fullPath string) (*model.Folder, error) {
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if fullPath == "/" || fullPath == "." || fullPath == "" {
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return nil, ErrRootProtected
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}
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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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// 去掉结尾空格
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dir = strings.TrimRight(dir, " ")
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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 nil, 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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// 递归创建父目录
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if _, ok := ctx.Value(fsctx.IgnoreConflictCtx).(bool); !ok {
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ctx = context.WithValue(ctx, fsctx.IgnoreConflictCtx, true)
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}
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newParent, err := fs.CreateDirectory(ctx, base)
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if err != nil {
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return nil, err
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}
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parent = newParent
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}
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// 是否有同名文件
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if ok, _ := fs.IsChildFileExist(parent, dir); ok {
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return nil, 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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OwnerID: fs.User.ID,
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}
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_, err := newFolder.Create()
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if err != nil {
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if _, ok := ctx.Value(fsctx.IgnoreConflictCtx).(bool); !ok {
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return nil, ErrFolderExisted
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}
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}
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return &newFolder, nil
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}
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// SaveTo 将别人分享的文件转存到目标路径下
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func (fs *FileSystem) SaveTo(ctx context.Context, path string) error {
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// 获取父目录
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isExist, folder := fs.IsPathExist(path)
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if !isExist {
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return ErrPathNotExist
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}
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var (
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totalSize uint64
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err error
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)
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if len(fs.DirTarget) > 0 {
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totalSize, err = fs.DirTarget[0].CopyFolderTo(fs.DirTarget[0].ID, folder)
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} else {
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parent := model.Folder{
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OwnerID: fs.FileTarget[0].UserID,
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}
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parent.ID = fs.FileTarget[0].FolderID
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totalSize, err = parent.MoveOrCopyFileTo([]uint{fs.FileTarget[0].ID}, folder, true)
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}
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// 扣除用户容量
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fs.User.IncreaseStorageWithoutCheck(totalSize)
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if err != nil {
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return ErrFileExisted.WithError(err)
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}
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return nil
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}
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