owpengram-server/internal/rpc/botapi_gateway.go

469 lines
16 KiB
Go

package rpc
import (
"context"
"errors"
"strconv"
"strings"
"time"
"unicode/utf8"
"telesrv/internal/domain"
)
var botAPIAuthKeyID = [8]byte{'B', 'O', 'T', 'A', 'P', 'I', 0, 1}
const botAPIChannelChatIDBase int64 = 1000000000000
// BotAPISelf returns the authenticated bot as a domain user.
func (r *Router) BotAPISelf(ctx context.Context, botID int64) (domain.User, error) {
if r == nil || r.deps.Users == nil || botID == 0 {
return domain.User{}, errors.New("BOT_INVALID")
}
u, found, err := r.deps.Users.ByID(ctx, botID, botID)
if err != nil {
return domain.User{}, err
}
if !found || !u.Bot {
return domain.User{}, errors.New("BOT_INVALID")
}
return u, nil
}
// BotAPIUpdates returns durable update_id based events projected for the HTTP
// Bot API. New deployments use the dedicated Bot API queue; the legacy
// user_update_events fallback is kept for tests that have not wired the queue.
func (r *Router) BotAPIUpdates(ctx context.Context, botID int64, offset int64) ([]domain.UpdateEvent, error) {
if r == nil || botID == 0 {
return nil, nil
}
if r.deps.BotAPIUpdates != nil {
return r.botAPIQueuedUpdates(ctx, botID, offset)
}
if r.deps.Updates == nil {
return nil, nil
}
fromPts := 0
if offset > 0 {
fromPts = int(offset - 1)
} else if st, found, err := r.deps.Updates.ConfirmedState(ctx, botAPIAuthKeyID, botID); err != nil {
return nil, err
} else if found {
fromPts = st.Pts
}
diff, err := r.deps.Updates.GetDifference(ctx, botAPIAuthKeyID, botID, domain.UpdateState{Pts: fromPts})
if err != nil {
return nil, err
}
if len(diff.Events) == 0 {
return nil, nil
}
return r.enrichUpdateEvents(ctx, botID, diff.Events), nil
}
// BotAPISendMessage sends a text message as a bot through the normal private
// or channel message state machine. Positive chat_id is a user private chat;
// -1000000000000-channel_id is a supergroup/channel chat.
func (r *Router) BotAPISendMessage(ctx context.Context, botID, chatID int64, text string, entities []domain.MessageEntity, replyMarkup *domain.MessageReplyMarkup, disableWebPagePreview, silent bool, replyToMessageID int) (domain.Message, error) {
if r == nil || botID == 0 {
return domain.Message{}, errors.New("BOT_INVALID")
}
peer, ok := botAPIPeerFromChatID(chatID)
if !ok {
return domain.Message{}, errors.New("CHAT_ID_INVALID")
}
if text == "" {
return domain.Message{}, errors.New("MESSAGE_EMPTY")
}
if utf8.RuneCountInString(text) > domain.MaxMessageTextLength {
return domain.Message{}, errors.New("MESSAGE_TOO_LONG")
}
var reply *domain.MessageReply
if replyToMessageID > 0 {
reply = &domain.MessageReply{Peer: peer, MessageID: replyToMessageID}
}
if peer.Type == domain.PeerTypeChannel {
return r.botAPISendChannelMessage(ctx, botID, peer.ID, text, entities, nil, replyMarkup, silent, reply)
}
if r.deps.Messages == nil {
return domain.Message{}, errors.New("BOT_INVALID")
}
if r.deps.Users != nil && peer.ID != botID {
if _, found, err := r.deps.Users.ByID(ctx, botID, peer.ID); err != nil {
return domain.Message{}, err
} else if !found {
return domain.Message{}, errors.New("CHAT_ID_INVALID")
}
}
res, err := r.deps.Messages.SendPrivateText(ctx, botID, domain.SendPrivateTextRequest{
SenderUserID: botID,
RecipientUserID: peer.ID,
RandomID: randomNonZeroInt64(),
Message: text,
Entities: append([]domain.MessageEntity(nil), entities...),
Silent: silent,
ReplyTo: reply,
Date: int(time.Now().Unix()),
ReplyMarkup: replyMarkup,
})
if err != nil {
return domain.Message{}, err
}
return res.SenderMessage, nil
}
// BotAPISendMedia sends a photo/document message through the same files service
// and private/channel message state machines used by MTProto sendMedia.
func (r *Router) BotAPISendMedia(ctx context.Context, botID, chatID int64, kind, locationKey, remoteURL, fileName, mimeType string, fileBytes []byte, caption string, entities []domain.MessageEntity, replyMarkup *domain.MessageReplyMarkup, silent bool, replyToMessageID int) (domain.Message, error) {
if r == nil || r.deps.Files == nil || botID == 0 {
return domain.Message{}, errors.New("BOT_INVALID")
}
peer, ok := botAPIPeerFromChatID(chatID)
if !ok {
return domain.Message{}, errors.New("CHAT_ID_INVALID")
}
if utf8.RuneCountInString(caption) > domain.MaxMessageTextLength {
return domain.Message{}, errors.New("MESSAGE_TOO_LONG")
}
media, err := r.botAPIMedia(ctx, botID, kind, locationKey, remoteURL, fileName, mimeType, fileBytes)
if err != nil {
return domain.Message{}, err
}
var reply *domain.MessageReply
if replyToMessageID > 0 {
reply = &domain.MessageReply{Peer: peer, MessageID: replyToMessageID}
}
if peer.Type == domain.PeerTypeChannel {
return r.botAPISendChannelMessage(ctx, botID, peer.ID, caption, entities, media, replyMarkup, silent, reply)
}
if r.deps.Messages == nil {
return domain.Message{}, errors.New("BOT_INVALID")
}
if r.deps.Users != nil && peer.ID != botID {
if _, found, err := r.deps.Users.ByID(ctx, botID, peer.ID); err != nil {
return domain.Message{}, err
} else if !found {
return domain.Message{}, errors.New("CHAT_ID_INVALID")
}
}
res, err := r.deps.Messages.SendPrivateText(ctx, botID, domain.SendPrivateTextRequest{
SenderUserID: botID,
RecipientUserID: peer.ID,
RandomID: randomNonZeroInt64(),
Message: caption,
Entities: append([]domain.MessageEntity(nil), entities...),
Media: media,
Silent: silent,
ReplyTo: reply,
Date: int(time.Now().Unix()),
ReplyMarkup: replyMarkup,
})
if err != nil {
return domain.Message{}, err
}
return res.SenderMessage, nil
}
func botAPIPeerFromChatID(chatID int64) (domain.Peer, bool) {
switch {
case chatID > 0:
return domain.Peer{Type: domain.PeerTypeUser, ID: chatID}, true
case chatID < -botAPIChannelChatIDBase:
channelID := -botAPIChannelChatIDBase - chatID
if channelID > 0 {
return domain.Peer{Type: domain.PeerTypeChannel, ID: channelID}, true
}
}
return domain.Peer{}, false
}
func (r *Router) botAPISendChannelMessage(ctx context.Context, botID, channelID int64, text string, entities []domain.MessageEntity, media *domain.MessageMedia, replyMarkup *domain.MessageReplyMarkup, silent bool, reply *domain.MessageReply) (domain.Message, error) {
if r.deps.Channels == nil {
return domain.Message{}, errors.New("CHAT_ID_INVALID")
}
mentionUserIDs := r.mentionUserIDsFromDomain(ctx, botID, text, entities)
res, err := r.deps.Channels.SendMessage(ctx, botID, domain.SendChannelMessageRequest{
UserID: botID,
ChannelID: channelID,
RandomID: randomNonZeroInt64(),
Message: text,
Entities: append([]domain.MessageEntity(nil), entities...),
Media: media,
MentionUserIDs: mentionUserIDs,
SkipRecipientLookup: true,
PostAuthor: r.channelPostAuthorName(ctx, botID),
Silent: silent,
ReplyTo: reply,
ReplyMarkup: replyMarkup,
Date: int(time.Now().Unix()),
})
if err != nil {
return domain.Message{}, botAPIChannelSendErr(err)
}
if !res.Duplicate {
r.enqueueChannelMessageFanout(ctx, botID, res, nil)
r.pushChannelDiscussionUpdate(ctx, botID, res.Discussion)
r.maybeEnqueueWebPageResolve(botID, domain.Peer{Type: domain.PeerTypeChannel, ID: channelID}, res.Message.ID, res.Message.Media)
}
return botAPIMessageFromChannel(botID, res.Message), nil
}
func botAPIMessageFromChannel(botID int64, msg domain.ChannelMessage) domain.Message {
from := msg.From
if from.Type == "" && msg.SenderUserID != 0 {
from = domain.Peer{Type: domain.PeerTypeUser, ID: msg.SenderUserID}
}
return domain.Message{
ID: msg.ID,
RandomID: msg.RandomID,
OwnerUserID: botID,
Peer: domain.Peer{Type: domain.PeerTypeChannel, ID: msg.ChannelID},
From: from,
Date: msg.Date,
EditDate: msg.EditDate,
Out: msg.SenderUserID == botID,
Silent: msg.Silent,
NoForwards: msg.NoForwards,
Body: msg.Body,
Entities: append([]domain.MessageEntity(nil), msg.Entities...),
ReplyTo: msg.ReplyTo,
Forward: msg.Forward,
Reactions: msg.Reactions,
Pts: msg.Pts,
TTLPeriod: msg.TTLPeriod,
ExpiresAt: msg.ExpiresAt,
Media: msg.Media,
MediaUnread: msg.MediaUnread,
ViaBotID: msg.ViaBotID,
GroupedID: msg.GroupedID,
ReplyMarkup: msg.ReplyMarkup,
RichMessage: msg.RichMessage,
Pinned: msg.Pinned,
}
}
func botAPIChannelSendErr(err error) error {
switch {
case errors.Is(err, domain.ErrChannelInvalid),
errors.Is(err, domain.ErrChannelPrivate),
errors.Is(err, domain.ErrChannelUserBanned):
return errors.New("CHAT_ID_INVALID")
case errors.Is(err, domain.ErrChannelWriteForbidden):
return errors.New("CHAT_WRITE_FORBIDDEN")
case errors.Is(err, domain.ErrChannelAdminRequired):
return errors.New("CHAT_ADMIN_REQUIRED")
case errors.Is(err, domain.ErrReplyMessageIDInvalid):
return errors.New("REPLY_MESSAGE_ID_INVALID")
default:
return channelInvalidErr(err)
}
}
func (r *Router) botAPIMedia(ctx context.Context, botID int64, kind, locationKey, remoteURL, fileName, mimeType string, fileBytes []byte) (*domain.MessageMedia, error) {
switch kind {
case "photo":
var photo domain.Photo
var err error
switch {
case len(fileBytes) > 0:
photo, err = r.deps.Files.CreatePhotoFromBytes(ctx, fileBytes)
case remoteURL != "":
photo, err = r.deps.Files.CreatePhotoFromURL(ctx, remoteURL)
case locationKey != "":
id, ok := botAPIPhotoID(locationKey)
if !ok {
return nil, errors.New("FILE_ID_INVALID")
}
var found bool
photo, found, err = r.deps.Files.GetPhoto(ctx, id)
if err == nil && !found {
err = errors.New("FILE_ID_INVALID")
}
default:
err = errors.New("FILE_ID_INVALID")
}
if err != nil {
return nil, botAPIMediaErr(err)
}
return &domain.MessageMedia{Kind: domain.MessageMediaKindPhoto, Photo: &photo}, nil
case "document":
var doc domain.Document
var err error
switch {
case len(fileBytes) > 0:
doc, err = r.deps.Files.CreateDocumentFromBytes(ctx, fileBytes, domain.DocumentSpec{
MimeType: mimeType,
Attributes: botAPIDocumentAttributes(fileName),
ForceFile: true,
})
case remoteURL != "":
doc, err = r.deps.Files.CreateDocumentFromURL(ctx, remoteURL)
case locationKey != "":
id, ok := botAPIDocumentID(locationKey)
if !ok {
return nil, errors.New("FILE_ID_INVALID")
}
var found bool
doc, found, err = r.deps.Files.GetDocument(ctx, id)
if err == nil && !found {
err = errors.New("FILE_ID_INVALID")
}
default:
err = errors.New("FILE_ID_INVALID")
}
if err != nil {
return nil, botAPIMediaErr(err)
}
return &domain.MessageMedia{Kind: domain.MessageMediaKindDocument, Document: &doc}, nil
default:
return nil, errors.New("MEDIA_INVALID")
}
}
func botAPIPhotoID(locationKey string) (int64, bool) {
if !strings.HasPrefix(locationKey, "photo:") {
return 0, false
}
rest := strings.TrimPrefix(locationKey, "photo:")
idText, _, ok := strings.Cut(rest, ":")
if !ok {
return 0, false
}
id, err := strconv.ParseInt(idText, 10, 64)
return id, err == nil && id > 0
}
func botAPIDocumentID(locationKey string) (int64, bool) {
if !strings.HasPrefix(locationKey, "doc:") {
return 0, false
}
rest := strings.TrimPrefix(locationKey, "doc:")
idText, _, _ := strings.Cut(rest, ":")
id, err := strconv.ParseInt(idText, 10, 64)
return id, err == nil && id > 0
}
func botAPIDocumentAttributes(fileName string) []domain.DocumentAttribute {
fileName = strings.TrimSpace(fileName)
if fileName == "" {
return nil
}
return []domain.DocumentAttribute{{Kind: domain.DocAttrFilename, FileName: fileName}}
}
func botAPIMediaErr(err error) error {
if err == nil {
return nil
}
if strings.Contains(strings.ToUpper(err.Error()), "FILE_ID_INVALID") {
return err
}
return errors.New("MEDIA_INVALID")
}
// BotAPIEditMessageText edits a bot-owned private text message through the
// normal durable edit state machine. Positive chat_id is a private user chat.
func (r *Router) BotAPIEditMessageText(ctx context.Context, botID, chatID int64, messageID int, text string, entities []domain.MessageEntity, setReplyMarkup bool, replyMarkup *domain.MessageReplyMarkup, disableWebPagePreview bool) (domain.Message, error) {
if r == nil || r.deps.Messages == nil || botID == 0 {
return domain.Message{}, errors.New("BOT_INVALID")
}
if chatID <= 0 {
return domain.Message{}, errors.New("CHAT_ID_INVALID")
}
if messageID <= 0 || messageID > domain.MaxMessageBoxID {
return domain.Message{}, errors.New("MESSAGE_ID_INVALID")
}
if text == "" {
return domain.Message{}, errors.New("MESSAGE_EMPTY")
}
if utf8.RuneCountInString(text) > domain.MaxMessageTextLength {
return domain.Message{}, errors.New("MESSAGE_TOO_LONG")
}
peer := domain.Peer{Type: domain.PeerTypeUser, ID: chatID}
res, err := r.deps.Messages.EditMessage(ctx, botID, domain.EditMessageRequest{
OwnerUserID: botID,
Peer: peer,
ID: messageID,
Message: text,
Entities: append([]domain.MessageEntity(nil), entities...),
EditDate: int(time.Now().Unix()),
SetReplyMarkup: setReplyMarkup,
ReplyMarkup: replyMarkup,
})
if err != nil {
return domain.Message{}, err
}
self := res.Self()
if self.Message.ID == 0 {
return domain.Message{}, errors.New("MESSAGE_ID_INVALID")
}
return self.Message, nil
}
// BotAPIDeleteMessage deletes a bot-owned private message with revoke=true so
// the target user's MTProto clients observe the normal delete update.
func (r *Router) BotAPIDeleteMessage(ctx context.Context, botID, chatID int64, messageID int) (bool, error) {
if r == nil || r.deps.Messages == nil || botID == 0 {
return false, errors.New("BOT_INVALID")
}
if chatID <= 0 {
return false, errors.New("CHAT_ID_INVALID")
}
if messageID <= 0 || messageID > domain.MaxMessageBoxID {
return false, errors.New("MESSAGE_ID_INVALID")
}
_, err := r.deps.Messages.DeleteMessages(ctx, botID, domain.DeleteMessagesRequest{
OwnerUserID: botID,
IDs: []int{messageID},
Revoke: true,
Date: int(time.Now().Unix()),
})
if err != nil {
return false, err
}
return true, nil
}
// BotAPIAnswerCallbackQuery bridges Bot API answerCallbackQuery to the same
// process-local callback registry used by messages.setBotCallbackAnswer.
func (r *Router) BotAPIAnswerCallbackQuery(ctx context.Context, botID int64, callbackQueryID, text, url string, showAlert bool, cacheTime int) (bool, error) {
if r == nil || r.callbacks == nil || botID == 0 {
return false, errors.New("BOT_INVALID")
}
queryID, err := strconv.ParseInt(callbackQueryID, 10, 64)
if err != nil || queryID == 0 {
return false, errors.New("QUERY_ID_INVALID")
}
if utf8.RuneCountInString(text) > domain.MaxBotCallbackAnswerLen {
return false, errors.New("MESSAGE_TOO_LONG")
}
if cacheTime < 0 {
cacheTime = 0
}
r.callbacks.resolve(botID, queryID, domain.BotCallbackAnswer{
Alert: showAlert,
Message: text,
URL: url,
CacheTime: cacheTime,
})
return true, nil
}
// BotAPIGetFile exposes the existing upload.getFile blob location space to the
// HTTP file endpoint after the bot token has authenticated the request.
func (r *Router) BotAPIGetFile(ctx context.Context, botID int64, locationKey string, offset int64, limit int) (domain.FileChunk, bool, error) {
if r == nil || r.deps.Files == nil || botID == 0 {
return domain.FileChunk{}, false, nil
}
if limit <= 0 || limit > maxUploadGetFileChunkLimit {
limit = maxUploadGetFileChunkLimit
}
if offset < 0 {
offset = 0
}
return r.deps.Files.GetFile(ctx, domain.FileDownloadRequest{
LocationKey: locationKey,
Offset: offset,
Limit: limit,
})
}