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// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package models
import (
"crypto/md5"
"fmt"
"image/png"
"io"
"strconv"
"strings"
"code.gitea.io/gitea/modules/avatar"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/storage"
)
// CustomAvatarRelativePath returns user custom avatar relative path.
func (u *User) CustomAvatarRelativePath() string {
return u.Avatar
}
// GenerateRandomAvatar generates a random avatar for user.
func (u *User) GenerateRandomAvatar() error {
return u.generateRandomAvatar(x)
}
func (u *User) generateRandomAvatar(e Engine) error {
seed := u.Email
if len(seed) == 0 {
seed = u.Name
}
img, err := avatar.RandomImage([]byte(seed))
if err != nil {
return fmt.Errorf("RandomImage: %v", err)
}
if u.Avatar == "" {
u.Avatar = HashEmail(u.AvatarEmail)
}
if err := storage.SaveFrom(storage.Avatars, u.CustomAvatarRelativePath(), func(w io.Writer) error {
if err := png.Encode(w, img); err != nil {
log.Error("Encode: %v", err)
}
return err
}); err != nil {
return fmt.Errorf("Failed to create dir %s: %v", u.CustomAvatarRelativePath(), err)
}
if _, err := e.ID(u.ID).Cols("avatar").Update(u); err != nil {
return err
}
log.Info("New random avatar created: %d", u.ID)
return nil
}
// SizedRelAvatarLink returns a link to the user's avatar via
// the local explore page. Function returns immediately.
// When applicable, the link is for an avatar of the indicated size (in pixels).
func (u *User) SizedRelAvatarLink(size int) string {
return strings.TrimSuffix(setting.AppSubURL, "/") + "/user/avatar/" + u.Name + "/" + strconv.Itoa(size)
}
// RealSizedAvatarLink returns a link to the user's avatar. When
// applicable, the link is for an avatar of the indicated size (in pixels).
//
// This function make take time to return when federated avatars
// are in use, due to a DNS lookup need
//
func (u *User) RealSizedAvatarLink(size int) string {
if u.ID == -1 {
return DefaultAvatarLink()
}
switch {
case u.UseCustomAvatar:
if u.Avatar == "" {
return DefaultAvatarLink()
}
return setting.AppSubURL + "/avatars/" + u.Avatar
case setting.DisableGravatar, setting.OfflineMode:
if u.Avatar == "" {
if err := u.GenerateRandomAvatar(); err != nil {
log.Error("GenerateRandomAvatar: %v", err)
}
}
return setting.AppSubURL + "/avatars/" + u.Avatar
}
return SizedAvatarLink(u.AvatarEmail, size)
}
// RelAvatarLink returns a relative link to the user's avatar. The link
// may either be a sub-URL to this site, or a full URL to an external avatar
// service.
func (u *User) RelAvatarLink() string {
return u.SizedRelAvatarLink(DefaultAvatarSize)
}
// AvatarLink returns user avatar absolute link.
func (u *User) AvatarLink() string {
link := u.RelAvatarLink()
if link[0] == '/' && link[1] != '/' {
return setting.AppURL + strings.TrimPrefix(link, setting.AppSubURL)[1:]
}
return link
}
// UploadAvatar saves custom avatar for user.
// FIXME: split uploads to different subdirs in case we have massive users.
func (u *User) UploadAvatar(data []byte) error {
m, err := avatar.Prepare(data)
if err != nil {
return err
}
sess := x.NewSession()
defer sess.Close()
if err = sess.Begin(); err != nil {
return err
}
u.UseCustomAvatar = true
// Different users can upload same image as avatar
// If we prefix it with u.ID, it will be separated
// Otherwise, if any of the users delete his avatar
// Other users will lose their avatars too.
u.Avatar = fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprintf("%d-%x", u.ID, md5.Sum(data)))))
if err = updateUser(sess, u); err != nil {
return fmt.Errorf("updateUser: %v", err)
}
if err := storage.SaveFrom(storage.Avatars, u.CustomAvatarRelativePath(), func(w io.Writer) error {
if err := png.Encode(w, *m); err != nil {
log.Error("Encode: %v", err)
}
return err
}); err != nil {
return fmt.Errorf("Failed to create dir %s: %v", u.CustomAvatarRelativePath(), err)
}
return sess.Commit()
}
// DeleteAvatar deletes the user's custom avatar.
func (u *User) DeleteAvatar() error {
aPath := u.CustomAvatarRelativePath()
log.Trace("DeleteAvatar[%d]: %s", u.ID, aPath)
if len(u.Avatar) > 0 {
if err := storage.Avatars.Delete(aPath); err != nil {
return fmt.Errorf("Failed to remove %s: %v", aPath, err)
}
}
u.UseCustomAvatar = false
u.Avatar = ""
if _, err := x.ID(u.ID).Cols("avatar, use_custom_avatar").Update(u); err != nil {
return fmt.Errorf("UpdateUser: %v", err)
}
return nil
}
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