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cloudreve/models/file.go

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package model
import (
"github.com/HFO4/cloudreve/pkg/util"
"github.com/jinzhu/gorm"
"path"
)
// File 文件
type File struct {
// 表字段
gorm.Model
Name string `gorm:"unique_index:idx_only_one"`
SourceName string
UserID uint `gorm:"index:user_id;unique_index:idx_only_one"`
Size uint64
PicInfo string
FolderID uint `gorm:"index:folder_id;unique_index:idx_only_one"`
PolicyID uint
Dir string `gorm:"size:65536"`
// 关联模型
Policy Policy `gorm:"PRELOAD:false,association_autoupdate:false"`
}
// Create 创建文件记录
func (file *File) Create() (uint, error) {
if err := DB.Create(file).Error; err != nil {
util.Log().Warning("无法插入文件记录, %s", err)
return 0, err
}
return file.ID, nil
}
// GetFileByPathAndName 给定路径(s)、文件名、用户ID查找文件
func GetFileByPathAndName(path string, name string, uid uint) (File, error) {
var file File
result := DB.Where("user_id = ? AND dir = ? AND name=?", uid, path, name).First(&file)
return file, result.Error
}
// GetChildFile 查找目录下子文件
func (folder *Folder) GetChildFile() ([]File, error) {
var files []File
result := DB.Where("folder_id = ?", folder.ID).Find(&files)
return files, result.Error
}
// GetChildFilesOfFolders 批量检索目录子文件
func GetChildFilesOfFolders(folders *[]Folder) ([]File, error) {
// 将所有待删除目录ID抽离以便检索文件
folderIDs := make([]uint, 0, len(*folders))
for _, value := range *folders {
folderIDs = append(folderIDs, value.ID)
}
// 检索文件
var files []File
result := DB.Where("folder_id in (?)", folderIDs).Find(&files)
return files, result.Error
}
// GetPolicy 获取文件所属策略
func (file *File) GetPolicy() *Policy {
if file.Policy.Model.ID == 0 {
file.Policy, _ = GetPolicyByID(file.PolicyID)
}
return &file.Policy
}
// GetFileByPaths 根据给定的文件路径(s)查找文件
func GetFileByPaths(paths []string, uid uint) ([]File, error) {
var files []File
tx := DB
for _, value := range paths {
base := path.Base(value)
dir := path.Dir(value)
tx = tx.Or("dir = ? and name = ? and user_id = ?", dir, base, uid)
}
result := tx.Find(&files)
return files, result.Error
}
// RemoveFilesWithSoftLinks 去除给定的文件列表中有软链接的文件
func RemoveFilesWithSoftLinks(files []File) ([]File, error) {
// 结果值
filteredFiles := make([]File, 0)
// 查询软链接的文件
var filesWithSoftLinks []File
tx := DB
for _, value := range files {
tx = tx.Or("source_name = ? and policy_id = ? and id != ?", value.SourceName, value.PolicyID, value.ID)
}
result := tx.Find(&filesWithSoftLinks)
if result.Error != nil {
return nil, result.Error
}
// 过滤具有软连接的文件
// TODO: 优化复杂度
if len(filesWithSoftLinks) == 0 {
filteredFiles = files
} else {
for i := 0; i < len(files); i++ {
finder := false
for _, value := range filesWithSoftLinks {
if value.PolicyID == files[i].PolicyID && value.SourceName == files[i].SourceName {
finder = true
break
}
}
if !finder {
filteredFiles = append(filteredFiles, files[i])
}
}
}
return filteredFiles, nil
}
// DeleteFileByIDs 根据给定ID批量删除文件记录
func DeleteFileByIDs(ids []uint) error {
result := DB.Where("id in (?)", ids).Delete(&File{})
return result.Error
}
// GetRecursiveByPaths 根据给定的文件路径(s)递归查找文件
func GetRecursiveByPaths(paths []string, uid uint) ([]File, error) {
files := make([]File, 0, len(paths))
search := util.BuildRegexp(paths, "^", "/", "|")
result := DB.Where("(user_id = ? and dir REGEXP ?) or dir in (?)", uid, search, paths).Find(&files)
return files, result.Error
}