387 lines
10 KiB
Go
387 lines
10 KiB
Go
package bot
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import (
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"context"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"strings"
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"sync"
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"github.com/NicoNex/echotron/v3"
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"github.com/TelegramExchange/tgex-backend/tg_bot/backend"
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"github.com/rs/zerolog/log"
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)
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var emptyKeyboard = echotron.InlineKeyboardMarkup{
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InlineKeyboard: [][]echotron.InlineKeyboardButton{},
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}
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type exec struct {
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handled bool // Событие обработано, дальше не идём
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transitioned bool // Был SetState
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}
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type Bot struct {
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echotron.API
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mu sync.Mutex
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ChatID int64
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exec *exec
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CurrentState State
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Session *Session
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LastMessageID int // ID последнего сообщения с inline кнопками
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LastMessageIsMedia bool // True if LastMessageID points to media message
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LastMessageTextHash string // Hash for last text/caption
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LastMessageKBHash string // Hash for last inline keyboard
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commandRouter func(cmd string) State // Роутер для команд (например, /start, /help)
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globalCallbackRouter func(callbackData string) State // Роутер для глобальных callbacks из уведомлений
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Backend *backend.Client
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}
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func NewBot(chatID int64, token string, commandRouter func(string) State, backendClient *backend.Client, globalCallbackRouter func(string) State) *Bot {
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if commandRouter == nil {
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panic("bot: commandRouter cannot be nil")
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}
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if globalCallbackRouter == nil {
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panic("bot: globalCallbackRouter cannot be nil")
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}
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if commandRouter("/start") == nil {
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panic("bot: commandRouter requires /start state answer")
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}
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if backendClient == nil {
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panic("bot: backendClient cannot be nil")
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}
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return &Bot{
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ChatID: chatID,
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API: echotron.NewAPI(token),
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Session: &Session{},
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commandRouter: commandRouter,
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Backend: backendClient,
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globalCallbackRouter: globalCallbackRouter,
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}
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}
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// GetOrCreateJWT получает JWT токен, передавая актуальные данные пользователя из update
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func (b *Bot) GetOrCreateJWT(u *echotron.Update) error {
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// Извлекаем данные пользователя из update
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var user *echotron.User
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if u.Message != nil && u.Message.From != nil {
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user = u.Message.From
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} else if u.CallbackQuery != nil && u.CallbackQuery.From != nil {
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user = u.CallbackQuery.From
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}
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var username, firstName, lastName *string
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if user != nil {
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if user.Username != "" {
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username = &user.Username
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}
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if user.FirstName != "" {
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firstName = &user.FirstName
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}
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if user.LastName != "" {
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lastName = &user.LastName
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}
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}
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jwt, err := b.Backend.GetJWTByTelegramUser(context.Background(), b.ChatID, username, firstName, lastName)
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if err != nil {
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return err
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}
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b.Session.JWT = jwt
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if firstName != nil {
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b.Session.FirstName = *firstName
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}
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return nil
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}
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func (b *Bot) SetState(s State, mode RenderMode) {
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log.Info().Msg(fmt.Sprintf("State transition: %T -> %T", b.CurrentState, s))
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if b.CurrentState != nil {
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b.CurrentState.Exit()
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}
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b.CurrentState = s
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if b.exec != nil {
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b.exec.transitioned = true
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b.exec.handled = true
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}
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s.Enter(b, mode)
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}
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func isChannelChat(chatType string) bool {
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return chatType == "channel" || chatType == "supergroup"
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}
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func stringPtr(value string) *string {
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if value == "" {
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return nil
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}
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return &value
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}
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func (b *Bot) Render(text string, keyboard echotron.InlineKeyboardMarkup, mode RenderMode) {
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switch mode {
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case EditMessage:
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b.Edit(text, keyboard)
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case NewMessage:
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b.SendNew(text, keyboard)
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default:
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panic("unknown RenderMode")
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}
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}
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func (b *Bot) SetLastMessageIsMedia(isMedia bool) {
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b.LastMessageIsMedia = isMedia
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}
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func (b *Bot) DownloadFileBytes(fileID string) ([]byte, error) {
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res, err := b.GetFile(fileID)
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if err != nil {
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return nil, err
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}
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if res.Result == nil || res.Result.FilePath == "" {
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return nil, fmt.Errorf("telegram file not available")
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}
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return b.DownloadFile(res.Result.FilePath)
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}
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func (b *Bot) SendNew(text string, keyboard echotron.InlineKeyboardMarkup) {
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if b.exec != nil {
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defer func() { b.exec.handled = true }()
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}
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if b.LastMessageID != 0 {
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log.Info().Int("cleanup_msg_id", b.LastMessageID).Msg("Cleaning up keyboard before SendNew")
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b.cleanupKeyboard(b.LastMessageID)
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}
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res, err := b.SendMessage(text, b.ChatID, &echotron.MessageOptions{ReplyMarkup: keyboard, ParseMode: echotron.HTML})
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if err != nil {
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log.Error().Err(err).Msg("SendMessage failed")
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return
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}
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if res.Result == nil {
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return
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}
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b.LastMessageID = res.Result.ID
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b.LastMessageIsMedia = false
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b.LastMessageTextHash = hashString(text)
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b.LastMessageKBHash = keyboardHash(keyboard)
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log.Info().Int("new_last_msg_id", b.LastMessageID).Msg("Updated LastMessageID in SendNew")
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}
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func (b *Bot) Edit(text string, keyboard echotron.InlineKeyboardMarkup) {
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if b.exec != nil {
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defer func() { b.exec.handled = true }()
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}
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if b.LastMessageID == 0 {
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b.SendNew(text, keyboard)
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return
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}
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newTextHash := hashString(text)
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newKBHash := keyboardHash(keyboard)
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textChanged := newTextHash != b.LastMessageTextHash
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kbChanged := newKBHash != b.LastMessageKBHash
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if !textChanged && !kbChanged {
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log.Info().Msg("Edit skipped: message not modified")
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return
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}
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var err error
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msgID := echotron.NewMessageID(b.ChatID, b.LastMessageID)
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if b.LastMessageIsMedia {
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_, err = b.EditMessageCaption(msgID, &echotron.MessageCaptionOptions{Caption: text, ParseMode: echotron.HTML, ReplyMarkup: keyboard})
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} else {
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_, err = b.EditMessageText(text, msgID, &echotron.MessageTextOptions{ReplyMarkup: keyboard, ParseMode: echotron.HTML})
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}
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if err == nil {
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if textChanged {
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b.LastMessageTextHash = newTextHash
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}
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if kbChanged {
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b.LastMessageKBHash = newKBHash
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}
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return
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}
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switch {
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case strings.Contains(err.Error(), "message is not modified"):
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log.Err(err).Msg("EditMessageText ignored: message is not modified")
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case strings.Contains(err.Error(), "no text in the message to edit"):
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b.LastMessageIsMedia = true
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log.Err(err).Msg("EditMessageText ignored: message has no text")
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default:
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log.Error().Err(err).Msg("EditMessageText")
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}
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}
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func keyboardHash(kb echotron.InlineKeyboardMarkup) string {
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b, err := json.Marshal(kb)
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if err != nil {
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return ""
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}
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sum := sha256.Sum256(b)
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return hex.EncodeToString(sum[:])
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}
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func hashString(v string) string {
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sum := sha256.Sum256([]byte(v))
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return hex.EncodeToString(sum[:])
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}
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func (b *Bot) Update(u *echotron.Update) {
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b.mu.Lock()
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defer b.mu.Unlock()
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log.Info().Int64("chat_id", b.ChatID).Msg("Update received")
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// 1. Системные события -> отправляем доменные события в backend
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if u.ChatJoinRequest != nil || u.ChatMember != nil || u.MyChatMember != nil {
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go b.forwardSystemEvent(u)
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return
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}
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// 2. Игнорируем события не из private чатов
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chatType := ""
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switch {
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case u.Message != nil:
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chatType = u.Message.Chat.Type
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case u.CallbackQuery != nil && u.CallbackQuery.Message != nil:
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chatType = u.CallbackQuery.Message.Chat.Type
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case u.EditedMessage != nil:
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chatType = u.EditedMessage.Chat.Type
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case u.ChannelPost != nil || u.EditedChannelPost != nil:
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return // Каналы игнорируем сразу
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}
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if chatType != "" && chatType != "private" {
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log.Debug().Str("chat_type", chatType).Msg("Ignoring non-private chat")
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return
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}
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// 3. Игнорируем edited messages
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if u.EditedMessage != nil || u.EditedChannelPost != nil || u.EditedBusinessMessage != nil {
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log.Debug().Msg("Ignoring edited message")
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return
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}
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err := b.GetOrCreateJWT(u)
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if err != nil || b.Session.JWT == "" {
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b.SendNew("❌ Ошибка авторизации. Попробуйте /start", emptyKeyboard)
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return
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}
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e := &exec{}
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b.exec = e
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defer func() { b.exec = nil }()
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if b.CurrentState == nil {
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b.CurrentState = b.commandRouter("/start")
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}
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// === Обработка входящего события ===
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// 1. Команды (приоритетный маршрут)
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if u.Message != nil {
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switch u.Message.Text {
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case "/start":
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b.SetState(b.commandRouter("/start"), NewMessage)
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return
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case "/start login":
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b.SetState(b.commandRouter("/start login"), NewMessage)
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return
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default:
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b.CurrentState.HandleMessage(b, u)
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if e.handled || e.transitioned {
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return
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}
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}
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}
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// 2. Callback запросы
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if u.CallbackQuery != nil {
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b.cleanupCallbackUI(u)
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if u.CallbackQuery.Data == "empty" {
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return
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}
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// Глобальные callbacks (из уведомлений)
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if newState := b.globalCallbackRouter(u.CallbackQuery.Data); newState != nil {
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b.SetState(newState, NewMessage)
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return
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}
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b.CurrentState.HandleCallback(b, u)
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if e.handled || e.transitioned {
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return
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}
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}
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// 3. Универсальный обработчик состояния (если ничего не подошло)
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b.CurrentState.Handle(b, u)
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if e.handled || e.transitioned {
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return
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}
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// 4. Fallback - ререндер текущего экрана, чтобы не терять прогресс
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if b.CurrentState != nil {
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mode := NewMessage
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if u.CallbackQuery != nil {
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mode = EditMessage
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}
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b.CurrentState.Enter(b, mode)
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if e.handled || e.transitioned {
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return
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}
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}
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// 5. Крайний fallback - сброс в начальное состояние
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b.SetState(b.commandRouter("/start"), NewMessage)
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}
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func (b *Bot) cleanupKeyboard(messageID int) {
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_, err := b.EditMessageReplyMarkup(
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echotron.NewMessageID(b.ChatID, messageID),
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&echotron.MessageReplyMarkupOptions{ReplyMarkup: emptyKeyboard},
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)
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if err != nil {
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log.Error().Err(err).Int("message_id", messageID).Msg("Failed to remove keyboard")
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}
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}
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func (b *Bot) cleanupCallbackUI(u *echotron.Update) {
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_, err := b.AnswerCallbackQuery(u.CallbackQuery.ID, nil)
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if err != nil {
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log.Error().Err(err).Msg("b.AnswerCallbackQuery error")
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}
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if u.CallbackQuery.Message != nil {
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callbackMessageID := u.CallbackQuery.Message.ID
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// Если это сообщение последнее, не удаляем клавиатуру
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if b.LastMessageID == callbackMessageID {
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return
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}
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b.cleanupKeyboard(callbackMessageID)
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}
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}
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