Initial open source release
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250
internal/rpc/photos.go
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250
internal/rpc/photos.go
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package rpc
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import (
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"context"
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"errors"
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"github.com/gotd/td/tg"
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"telesrv/internal/domain"
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)
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// registerPhotos 注册 photos.* RPC handler（头像上传 / 切换 / 查询 / 删除）。
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func (r *Router) registerPhotos(d *tg.ServerDispatcher) {
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d.OnPhotosUploadProfilePhoto(r.onPhotosUploadProfilePhoto)
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d.OnPhotosUpdateProfilePhoto(r.onPhotosUpdateProfilePhoto)
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d.OnPhotosGetUserPhotos(r.onPhotosGetUserPhotos)
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d.OnPhotosDeletePhotos(r.onPhotosDeletePhotos)
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}
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func (r *Router) onPhotosUploadProfilePhoto(ctx context.Context, req *tg.PhotosUploadProfilePhotoRequest) (*tg.PhotosPhoto, error) {
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if r.deps.Files == nil {
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return nil, notImplementedErr()
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}
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userID, ok, err := r.currentUserID(ctx)
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if err != nil {
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return nil, internalErr()
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}
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if !ok || userID == 0 {
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return nil, photoInvalidErr()
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}
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file, hasFile := req.GetFile()
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if !hasFile {
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// 仅 fallback / video / emoji markup 等本阶段不支持的头像变体。
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return nil, photoInvalidErr()
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}
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ref, ok := uploadedFileRef(userID, file)
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if !ok {
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return nil, fileReferenceInvalidErr()
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}
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photo, err := r.deps.Files.UploadProfilePhoto(ctx, domain.PeerTypeUser, userID, ref, int(r.clock.Now().Unix()))
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if err != nil {
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return nil, photoUploadErr(err)
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}
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return r.photosPhotoForSelf(ctx, userID, photo), nil
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}
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func (r *Router) onPhotosUpdateProfilePhoto(ctx context.Context, req *tg.PhotosUpdateProfilePhotoRequest) (*tg.PhotosPhoto, error) {
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if r.deps.Files == nil {
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return nil, notImplementedErr()
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}
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userID, ok, err := r.currentUserID(ctx)
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if err != nil {
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return nil, internalErr()
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}
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if !ok || userID == 0 {
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return nil, photoInvalidErr()
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}
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switch in := req.ID.(type) {
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case *tg.InputPhoto:
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photo, found, err := r.deps.Files.SetCurrentProfilePhoto(ctx, domain.PeerTypeUser, userID, in.ID, int(r.clock.Now().Unix()))
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if err != nil {
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return nil, internalErr()
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}
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if !found {
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return nil, photoInvalidErr()
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}
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return r.photosPhotoForSelf(ctx, userID, photo), nil
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default:
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// InputPhotoEmpty：移除当前头像（停用现有当前照片）。
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if cur, found, err := r.deps.Files.CurrentProfilePhoto(ctx, domain.PeerTypeUser, userID); err == nil && found {
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_, _ = r.deps.Files.DeleteProfilePhotos(ctx, domain.PeerTypeUser, userID, []int64{cur.ID})
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}
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return r.photosPhotoForSelf(ctx, userID, domain.Photo{}), nil
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}
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}
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func (r *Router) onPhotosGetUserPhotos(ctx context.Context, req *tg.PhotosGetUserPhotosRequest) (tg.PhotosPhotosClass, error) {
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if r.deps.Files == nil {
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return &tg.PhotosPhotos{}, nil
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}
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currentUserID, ok, err := r.currentUserID(ctx)
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if err != nil {
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return nil, internalErr()
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}
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if !ok || currentUserID == 0 {
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return nil, userIDInvalidErr()
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}
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target, found, err := r.userFromInput(ctx, currentUserID, req.UserID)
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if err != nil {
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return nil, internalErr()
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}
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if !found {
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return nil, userIDInvalidErr()
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}
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offset := req.Offset
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if offset < 0 {
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offset = 0
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}
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limit := req.Limit
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if limit <= 0 || limit > 100 {
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limit = 100
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}
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photos, total, err := r.deps.Files.GetProfilePhotos(ctx, domain.PeerTypeUser, target.ID, offset, limit, req.MaxID)
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if err != nil {
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return nil, internalErr()
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}
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tgPhotos := make([]tg.PhotoClass, 0, len(photos))
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for _, p := range photos {
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tgPhotos = append(tgPhotos, tgPhoto(p))
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}
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users := []tg.UserClass{r.tgUser(target)}
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if total > len(photos)+offset {
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return &tg.PhotosPhotosSlice{Count: total, Photos: tgPhotos, Users: users}, nil
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}
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return &tg.PhotosPhotos{Photos: tgPhotos, Users: users}, nil
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}
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func (r *Router) onPhotosDeletePhotos(ctx context.Context, id []tg.InputPhotoClass) ([]int64, error) {
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if r.deps.Files == nil {
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return []int64{}, nil
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}
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userID, ok, err := r.currentUserID(ctx)
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if err != nil {
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return nil, internalErr()
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}
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if !ok || userID == 0 {
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return nil, photoInvalidErr()
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}
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ids := make([]int64, 0, len(id))
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for _, in := range id {
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if photo, isPhoto := in.(*tg.InputPhoto); isPhoto && photo.ID != 0 {
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ids = append(ids, photo.ID)
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}
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}
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if len(ids) == 0 {
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return []int64{}, nil
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}
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if _, err := r.deps.Files.DeleteProfilePhotos(ctx, domain.PeerTypeUser, userID, ids); err != nil {
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return nil, internalErr()
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}
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return ids, nil
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}
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// photosPhotoForSelf 组装 photos.photo 响应（新照片 + 带头像的 self user），并在头像变更后
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// 向该账号其它在线设备推送，使其即时刷新头像。仅由 uploadProfilePhoto / updateProfilePhoto
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// 等头像变更路径调用（只读路径不得使用，否则会误触发推送）。
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func (r *Router) photosPhotoForSelf(ctx context.Context, userID int64, photo domain.Photo) *tg.PhotosPhoto {
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out := &tg.PhotosPhoto{Photo: tgPhoto(photo), Users: []tg.UserClass{}}
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if r.deps.Users == nil {
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return out
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}
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self, err := r.deps.Users.Self(ctx, userID)
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if err != nil {
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return out
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}
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out.Users = append(out.Users, r.tgSelfUser(self))
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r.pushSelfPhotoUpdate(ctx, self)
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return out
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}
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// pushSelfPhotoUpdate 向该账号其它在线设备推送头像变更。updateUserName 不含 photo 无法刷新
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// 头像；updateUser 只是「该 user 变了」的信号（TDesktop 仅当 peer 已 full-loaded 时才
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// forceFull 重拉）；最可靠是在 Updates.Users 带上含新 userProfilePhoto 的完整 self user，
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// TDesktop 经 processUser→setPhoto→peerUpdated(Photo) 即时刷新。当前设备同时经 RPC 返回更新，
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// 重复推送对 TDesktop 幂等（setUserpicChecked 比对 photo_id，相同则 no-op）。
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func (r *Router) pushSelfPhotoUpdate(ctx context.Context, self domain.User) {
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if self.ID == 0 {
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return
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}
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r.pushUserUpdates(ctx, self.ID, &tg.Updates{
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Updates: []tg.UpdateClass{&tg.UpdateUser{UserID: self.ID}},
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Users: []tg.UserClass{r.tgSelfUser(self)},
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Date: int(r.clock.Now().Unix()),
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})
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}
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// uploadedFileRef 把 tg.InputFile / InputFileBig 转成 domain.UploadedFileRef。
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func uploadedFileRef(ownerUserID int64, file tg.InputFileClass) (domain.UploadedFileRef, bool) {
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switch f := file.(type) {
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case *tg.InputFile:
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if f.ID == 0 || f.Parts <= 0 {
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return domain.UploadedFileRef{}, false
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}
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return domain.UploadedFileRef{OwnerUserID: ownerUserID, FileID: f.ID, Parts: f.Parts, Name: f.Name, MD5: f.MD5Checksum}, true
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case *tg.InputFileBig:
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if f.ID == 0 || f.Parts <= 0 {
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return domain.UploadedFileRef{}, false
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}
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return domain.UploadedFileRef{OwnerUserID: ownerUserID, FileID: f.ID, Parts: f.Parts, Name: f.Name, Big: true}, true
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default:
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return domain.UploadedFileRef{}, false
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}
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}
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// resolveInputChatPhoto 把 tg.InputChatPhoto 解析为 *domain.Photo（nil=清除头像）。
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// 支持新上传（InputChatUploadedPhoto）与引用已有照片（InputChatPhoto{InputPhoto}）。
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func (r *Router) resolveInputChatPhoto(ctx context.Context, userID int64, input tg.InputChatPhotoClass) (*domain.Photo, error) {
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switch in := input.(type) {
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case *tg.InputChatPhotoEmpty:
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return nil, nil
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case *tg.InputChatUploadedPhoto:
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file, ok := in.GetFile()
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if !ok {
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return nil, photoInvalidErr()
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}
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if r.deps.Files == nil {
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return nil, photoInvalidErr()
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}
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ref, ok := uploadedFileRef(userID, file)
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if !ok {
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return nil, fileReferenceInvalidErr()
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}
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// 频道/群头像用 avatar 尺寸（'a'/'c'），匹配 InputPeerPhotoFileLocation 下载路径。
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photo, err := r.deps.Files.CreateAvatarFromUpload(ctx, ref)
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if err != nil {
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return nil, photoUploadErr(err)
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}
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return &photo, nil
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case *tg.InputChatPhoto:
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switch id := in.ID.(type) {
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case *tg.InputPhoto:
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if r.deps.Files == nil {
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return nil, photoInvalidErr()
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}
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photo, found, err := r.deps.Files.GetPhoto(ctx, id.ID)
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if err != nil {
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return nil, internalErr()
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}
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if !found {
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return nil, photoInvalidErr()
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}
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return &photo, nil
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default:
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return nil, nil // InputPhotoEmpty → 清除
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}
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default:
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return nil, photoInvalidErr()
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}
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}
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func photoUploadErr(err error) error {
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switch {
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case errors.Is(err, domain.ErrFilePartsInvalid):
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return filePartsInvalidErr()
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case errors.Is(err, domain.ErrPhotoInvalid):
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return photoInvalidErr()
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default:
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return internalErr()
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}
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}
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