diff options
Diffstat (limited to 'model/file_info.go')
-rw-r--r-- | model/file_info.go | 173 |
1 files changed, 135 insertions, 38 deletions
diff --git a/model/file_info.go b/model/file_info.go index f785042b3..687473d4f 100644 --- a/model/file_info.go +++ b/model/file_info.go @@ -6,58 +6,55 @@ package model import ( "bytes" "encoding/json" + "image" "image/gif" "io" "mime" "path/filepath" + "strings" ) type FileInfo struct { - Filename string `json:"filename"` - Size int `json:"size"` + Id string `json:"id"` + CreatorId string `json:"user_id"` + PostId string `json:"post_id,omitempty"` + CreateAt int64 `json:"create_at"` + UpdateAt int64 `json:"update_at"` + DeleteAt int64 `json:"delete_at"` + Path string `json:"-"` // not sent back to the client + ThumbnailPath string `json:"-"` // not sent back to the client + PreviewPath string `json:"-"` // not sent back to the client + Name string `json:"name"` Extension string `json:"extension"` + Size int64 `json:"size"` MimeType string `json:"mime_type"` - HasPreviewImage bool `json:"has_preview_image"` + Width int `json:"width,omitempty"` + Height int `json:"height,omitempty"` + HasPreviewImage bool `json:"has_preview_image,omitempty"` } -func GetInfoForBytes(filename string, data []byte) (*FileInfo, *AppError) { - size := len(data) - - var mimeType string - extension := filepath.Ext(filename) - isImage := IsFileExtImage(extension) - if isImage { - mimeType = GetImageMimeType(extension) +func (info *FileInfo) ToJson() string { + b, err := json.Marshal(info) + if err != nil { + return "" } else { - mimeType = mime.TypeByExtension(extension) + return string(b) } +} - if extension != "" && extension[0] == '.' { - // the client expects a file extension without the leading period - extension = extension[1:] - } +func FileInfoFromJson(data io.Reader) *FileInfo { + decoder := json.NewDecoder(data) - hasPreviewImage := isImage - if mimeType == "image/gif" { - // just show the gif itself instead of a preview image for animated gifs - if gifImage, err := gif.DecodeAll(bytes.NewReader(data)); err != nil { - return nil, NewLocAppError("GetInfoForBytes", "model.file_info.get.gif.app_error", nil, "filename="+filename) - } else { - hasPreviewImage = len(gifImage.Image) == 1 - } + var info FileInfo + if err := decoder.Decode(&info); err != nil { + return nil + } else { + return &info } - - return &FileInfo{ - Filename: filename, - Size: size, - Extension: extension, - MimeType: mimeType, - HasPreviewImage: hasPreviewImage, - }, nil } -func (info *FileInfo) ToJson() string { - b, err := json.Marshal(info) +func FileInfosToJson(infos []*FileInfo) string { + b, err := json.Marshal(infos) if err != nil { return "" } else { @@ -65,13 +62,113 @@ func (info *FileInfo) ToJson() string { } } -func FileInfoFromJson(data io.Reader) *FileInfo { +func FileInfosFromJson(data io.Reader) []*FileInfo { decoder := json.NewDecoder(data) - var info FileInfo - if err := decoder.Decode(&info); err != nil { + var infos []*FileInfo + if err := decoder.Decode(&infos); err != nil { return nil } else { - return &info + return infos + } +} + +func (o *FileInfo) PreSave() { + if o.Id == "" { + o.Id = NewId() + } + + if o.CreateAt == 0 { + o.CreateAt = GetMillis() + o.UpdateAt = o.CreateAt + } +} + +func (o *FileInfo) IsValid() *AppError { + if len(o.Id) != 26 { + return NewLocAppError("FileInfo.IsValid", "model.file_info.is_valid.id.app_error", nil, "") + } + + if len(o.CreatorId) != 26 { + return NewLocAppError("FileInfo.IsValid", "model.file_info.is_valid.user_id.app_error", nil, "id="+o.Id) + } + + if len(o.PostId) != 0 && len(o.PostId) != 26 { + return NewLocAppError("FileInfo.IsValid", "model.file_info.is_valid.post_id.app_error", nil, "id="+o.Id) + } + + if o.CreateAt == 0 { + return NewLocAppError("FileInfo.IsValid", "model.file_info.is_valid.create_at.app_error", nil, "id="+o.Id) + } + + if o.UpdateAt == 0 { + return NewLocAppError("FileInfo.IsValid", "model.file_info.is_valid.update_at.app_error", nil, "id="+o.Id) + } + + if o.Path == "" { + return NewLocAppError("FileInfo.IsValid", "model.file_info.is_valid.path.app_error", nil, "id="+o.Id) } + + return nil +} + +func (o *FileInfo) IsImage() bool { + return strings.HasPrefix(o.MimeType, "image") +} + +func GetInfoForBytes(name string, data []byte) (*FileInfo, *AppError) { + info := &FileInfo{ + Name: name, + Size: int64(len(data)), + } + var err *AppError + + extension := strings.ToLower(filepath.Ext(name)) + info.MimeType = mime.TypeByExtension(extension) + + if extension != "" && extension[0] == '.' { + // The client expects a file extension without the leading period + info.Extension = extension[1:] + } else { + info.Extension = extension + } + + if info.IsImage() { + // Only set the width and height if it's actually an image that we can understand + if config, _, err := image.DecodeConfig(bytes.NewReader(data)); err == nil { + info.Width = config.Width + info.Height = config.Height + + if info.MimeType == "image/gif" { + // Just show the gif itself instead of a preview image for animated gifs + if gifConfig, err := gif.DecodeAll(bytes.NewReader(data)); err != nil { + // Still return the rest of the info even though it doesn't appear to be an actual gif + info.HasPreviewImage = true + err = NewLocAppError("GetInfoForBytes", "model.file_info.get.gif.app_error", nil, "name="+name) + } else { + info.HasPreviewImage = len(gifConfig.Image) == 1 + } + } else { + info.HasPreviewImage = true + } + } + } + + return info, err +} + +func GetEtagForFileInfos(infos []*FileInfo) string { + if len(infos) == 0 { + return Etag() + } + + var maxUpdateAt int64 + + for _, info := range infos { + if info.UpdateAt > maxUpdateAt { + maxUpdateAt = info.UpdateAt + } + } + + return Etag(infos[0].PostId, maxUpdateAt) } |