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// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package user
import (
"context"
"crypto/md5"
"fmt"
"image/png"
"io"
"strings"
"code.gitea.io/gitea/models/avatars"
"code.gitea.io/gitea/models/db"
"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 GenerateRandomAvatar(ctx context.Context, u *User) error {
seed := u.Email
if len(seed) == 0 {
seed = u.Name
}
img, err := avatar.RandomImage([]byte(seed))
if err != nil {
return fmt.Errorf("RandomImage: %w", err)
}
u.Avatar = avatars.HashEmail(seed)
// Don't share the images so that we can delete them easily
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: %w", u.CustomAvatarRelativePath(), err)
}
if _, err := db.GetEngine(ctx).ID(u.ID).Cols("avatar").Update(u); err != nil {
return err
}
log.Info("New random avatar created: %d", u.ID)
return nil
}
// AvatarLinkWithSize returns a link to the user's avatar with size. size <= 0 means default size
func (u *User) AvatarLinkWithSize(ctx context.Context, size int) string {
if u.IsGhost() {
return avatars.DefaultAvatarLink()
}
useLocalAvatar := false
autoGenerateAvatar := false
disableGravatar := setting.Config().Picture.DisableGravatar.Value(ctx)
switch {
case u.UseCustomAvatar:
useLocalAvatar = true
case disableGravatar, setting.OfflineMode:
useLocalAvatar = true
autoGenerateAvatar = true
}
if useLocalAvatar {
if u.Avatar == "" && autoGenerateAvatar {
if err := GenerateRandomAvatar(ctx, u); err != nil {
log.Error("GenerateRandomAvatar: %v", err)
}
}
if u.Avatar == "" {
return avatars.DefaultAvatarLink()
}
return avatars.GenerateUserAvatarImageLink(u.Avatar, size)
}
return avatars.GenerateEmailAvatarFastLink(ctx, u.AvatarEmail, size)
}
// AvatarLink returns the full avatar link with http host
func (u *User) AvatarLink(ctx context.Context) string {
link := u.AvatarLinkWithSize(ctx, 0)
if !strings.HasPrefix(link, "//") && !strings.Contains(link, "://") {
return setting.AppURL + strings.TrimPrefix(link, setting.AppSubURL+"/")
}
return link
}
// IsUploadAvatarChanged returns true if the current user's avatar would be changed with the provided data
func (u *User) IsUploadAvatarChanged(data []byte) bool {
if !u.UseCustomAvatar || len(u.Avatar) == 0 {
return true
}
avatarID := fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprintf("%d-%x", u.ID, md5.Sum(data)))))
return u.Avatar != avatarID
}
// ExistsWithAvatarAtStoragePath returns true if there is a user with this Avatar
func ExistsWithAvatarAtStoragePath(ctx context.Context, storagePath string) (bool, error) {
// See func (u *User) CustomAvatarRelativePath()
// u.Avatar is used directly as the storage path - therefore we can check for existence directly using the path
return db.GetEngine(ctx).Where("`avatar`=?", storagePath).Exist(new(User))
}
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