Feat: support setting "last modified" props when creating upload session

pkg/filesystem/fsctx/stream.go

@@ -19,7 +19,7 @@ const (
 type FileStream struct {
 	Mode         WriteMode
 	Hidden       bool
-	LastModified time.Time
+	LastModified *time.Time
 	Metadata     map[string]string
 	File         io.ReadCloser
 	Size         uint64
@@ -61,7 +61,7 @@ func (file *FileStream) GetMetadata() map[string]string {
 	return file.Metadata
 }
 
-func (file *FileStream) GetLastModified() time.Time {
+func (file *FileStream) GetLastModified() *time.Time {
 	return file.LastModified
 }
 
@@ -87,7 +87,7 @@ type FileHeader interface {
 	GetVirtualPath() string
 	GetMode() WriteMode
 	GetMetadata() map[string]string
-	GetLastModified() time.Time
+	GetLastModified() *time.Time
 	IsHidden() bool
 	GetSavePath() string
 	SetSize(uint64)

pkg/filesystem/upload.go

@@ -149,7 +149,7 @@ func (fs *FileSystem) CancelUpload(ctx context.Context, path string, file fsctx.
 }
 
 // CreateUploadSession 创建上传会话
-func (fs *FileSystem) CreateUploadSession(ctx context.Context, path string, size uint64, name string) (*serializer.UploadCredential, error) {
+func (fs *FileSystem) CreateUploadSession(ctx context.Context, file *fsctx.FileStream) (*serializer.UploadCredential, error) {
 	// 获取相关有效期设置
 	credentialTTL := model.GetIntSetting("upload_credential_timeout", 3600)
 	callBackSessionTTL := model.GetIntSetting("upload_session_timeout", 86400)
@@ -157,16 +157,12 @@ func (fs *FileSystem) CreateUploadSession(ctx context.Context, path string, size
 	callbackKey := uuid.Must(uuid.NewV4()).String()
 
 	// 创建隐藏的文件，同时校验文件信息
-	file := &fsctx.FileStream{
-		Size:        size,
-		Name:        name,
-		VirtualPath: path,
-		Mode:        fsctx.Nop,
-		Hidden:      true,
-		Metadata: map[string]string{
-			UploadSessionMetaKey: callbackKey,
-		},
+	file.Mode = fsctx.Nop
+	file.Hidden = true
+	file.Metadata = map[string]string{
+		UploadSessionMetaKey: callbackKey,
 	}
+
 	fs.Use("BeforeUpload", HookValidateFile)
 	fs.Use("AfterUpload", HookClearFileHeaderSize)
 	fs.Use("AfterUpload", GenericAfterUpload)
@@ -175,14 +171,15 @@ func (fs *FileSystem) CreateUploadSession(ctx context.Context, path string, size
 	}
 
 	uploadSession := &serializer.UploadSession{
-		Key:         callbackKey,
-		UID:         fs.User.ID,
-		PolicyID:    fs.Policy.ID,
-		VirtualPath: path,
-		Name:        name,
-		Size:        size,
-		SavePath:    file.SavePath,
-		ChunkSize:   fs.Policy.OptionsSerialized.ChunkSize,
+		Key:          callbackKey,
+		UID:          fs.User.ID,
+		PolicyID:     fs.Policy.ID,
+		VirtualPath:  file.VirtualPath,
+		Name:         file.Name,
+		Size:         file.Size,
+		SavePath:     file.SavePath,
+		ChunkSize:    fs.Policy.OptionsSerialized.ChunkSize,
+		LastModified: file.GetLastModified(),
 	}
 
 	// 获取上传凭证

pkg/serializer/upload.go

@@ -4,6 +4,7 @@ import (
 	"encoding/base64"
 	"encoding/gob"
 	"encoding/json"
+	"time"
 )
 
 // UploadPolicy slave模式下传递的上传策略
@@ -31,14 +32,15 @@ type UploadCredential struct {
 
 // UploadSession 上传会话
 type UploadSession struct {
-	Key         string
-	UID         uint
-	PolicyID    uint
-	VirtualPath string
-	Name        string
-	Size        uint64
-	SavePath    string
-	ChunkSize   uint64
+	Key          string // 上传会话 GUID
+	UID          uint   // 发起者
+	PolicyID     uint
+	VirtualPath  string     // 用户文件路径，不含文件名
+	Name         string     // 文件名
+	Size         uint64     // 文件大小
+	SavePath     string     // 物理存储路径，包含物理文件名
+	ChunkSize    uint64     // 分块大小，0 为部分快
+	LastModified *time.Time // 可选的文件最后修改日期
 }
 
 // UploadCallback 上传回调正文