Update vendor

vendor/github.com/mattermost/mattermost-server/v6/model/file_info.go

@@ -0,0 +1,184 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"image"
+	"image/gif"
+	"io"
+	"mime"
+	"net/http"
+	"path/filepath"
+	"strings"
+)
+
+const (
+	FileinfoSortByCreated = "CreateAt"
+	FileinfoSortBySize    = "Size"
+)
+
+// GetFileInfosOptions contains options for getting FileInfos
+type GetFileInfosOptions struct {
+	// UserIds optionally limits the FileInfos to those created by the given users.
+	UserIds []string `json:"user_ids"`
+	// ChannelIds optionally limits the FileInfos to those created in the given channels.
+	ChannelIds []string `json:"channel_ids"`
+	// Since optionally limits FileInfos to those created at or after the given time, specified as Unix time in milliseconds.
+	Since int64 `json:"since"`
+	// IncludeDeleted if set includes deleted FileInfos.
+	IncludeDeleted bool `json:"include_deleted"`
+	// SortBy sorts the FileInfos by this field. The default is to sort by date created.
+	SortBy string `json:"sort_by"`
+	// SortDescending changes the sort direction to descending order when true.
+	SortDescending bool `json:"sort_descending"`
+}
+
+type FileInfo struct {
+	Id              string  `json:"id"`
+	CreatorId       string  `json:"user_id"`
+	PostId          string  `json:"post_id,omitempty"`
+	ChannelId       string  `db:"-" json:"channel_id"`
+	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"`
+	Width           int     `json:"width,omitempty"`
+	Height          int     `json:"height,omitempty"`
+	HasPreviewImage bool    `json:"has_preview_image,omitempty"`
+	MiniPreview     *[]byte `json:"mini_preview"` // declared as *[]byte to avoid postgres/mysql differences in deserialization
+	Content         string  `json:"-"`
+	RemoteId        *string `json:"remote_id"`
+}
+
+func (fi *FileInfo) PreSave() {
+	if fi.Id == "" {
+		fi.Id = NewId()
+	}
+
+	if fi.CreateAt == 0 {
+		fi.CreateAt = GetMillis()
+	}
+
+	if fi.UpdateAt < fi.CreateAt {
+		fi.UpdateAt = fi.CreateAt
+	}
+
+	if fi.RemoteId == nil {
+		fi.RemoteId = NewString("")
+	}
+}
+
+func (fi *FileInfo) IsValid() *AppError {
+	if !IsValidId(fi.Id) {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !IsValidId(fi.CreatorId) && fi.CreatorId != "nouser" {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.user_id.app_error", nil, "id="+fi.Id, http.StatusBadRequest)
+	}
+
+	if fi.PostId != "" && !IsValidId(fi.PostId) {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.post_id.app_error", nil, "id="+fi.Id, http.StatusBadRequest)
+	}
+
+	if fi.CreateAt == 0 {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.create_at.app_error", nil, "id="+fi.Id, http.StatusBadRequest)
+	}
+
+	if fi.UpdateAt == 0 {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.update_at.app_error", nil, "id="+fi.Id, http.StatusBadRequest)
+	}
+
+	if fi.Path == "" {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.path.app_error", nil, "id="+fi.Id, http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (fi *FileInfo) IsImage() bool {
+	return strings.HasPrefix(fi.MimeType, "image")
+}
+
+func NewInfo(name string) *FileInfo {
+	info := &FileInfo{
+		Name: name,
+	}
+
+	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
+	}
+
+	return info
+}
+
+func GetInfoForBytes(name string, data io.ReadSeeker, size int) (*FileInfo, *AppError) {
+	info := &FileInfo{
+		Name: name,
+		Size: int64(size),
+	}
+	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(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
+				data.Seek(0, io.SeekStart)
+				gifConfig, err := gif.DecodeAll(data)
+				if err != nil {
+					// Still return the rest of the info even though it doesn't appear to be an actual gif
+					info.HasPreviewImage = true
+					return info, NewAppError("GetInfoForBytes", "model.file_info.get.gif.app_error", nil, err.Error(), http.StatusBadRequest)
+				}
+				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)
+}