telegabber/telegram/utils.go

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package telegram
import (
"crypto/sha1"
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"crypto/sha256"
"fmt"
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"github.com/pkg/errors"
"io"
"os"
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"path/filepath"
"regexp"
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"strconv"
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"strings"
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"time"
"dev.narayana.im/narayana/telegabber/xmpp/gateway"
log "github.com/sirupsen/logrus"
"github.com/soheilhy/args"
"github.com/zelenin/go-tdlib/client"
)
var errOffline = errors.New("TDlib instance is offline")
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var spaceRegex = regexp.MustCompile(`\s+`)
const newlineChar string = "\n"
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// GetContactByUsername resolves username to user id retrieves user and chat information
func (c *Client) GetContactByUsername(username string) (*client.Chat, *client.User, error) {
if !c.online {
return nil, nil, errOffline
}
chat, err := c.client.SearchPublicChat(&client.SearchPublicChatRequest{
Username: username,
})
if err != nil {
return nil, nil, err
}
return c.GetContactByID(int32(chat.Id), chat)
}
// GetContactByID gets user and chat information from cache (or tries to retrieve it, if missing)
func (c *Client) GetContactByID(id int32, chat *client.Chat) (*client.Chat, *client.User, error) {
if !c.online {
return nil, nil, errOffline
}
var user *client.User
var cacheChat *client.Chat
var ok bool
var err error
user, ok = cache.users[id]
if !ok && id > 0 {
user, err = c.client.GetUser(&client.GetUserRequest{
UserId: id,
})
if err != nil {
return nil, nil, err
}
cache.users[id] = user
}
chatID := int64(id)
cacheChat, ok = cache.chats[chatID]
if !ok {
if chat == nil {
cacheChat, err = c.client.GetChat(&client.GetChatRequest{
ChatId: chatID,
})
if err != nil {
return nil, nil, err
}
cache.chats[chatID] = cacheChat
} else {
cache.chats[chatID] = chat
}
}
if chat == nil {
chat = cacheChat
}
return chat, user, nil
}
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func userStatusToText(status client.UserStatus) (string, string) {
var show, textStatus string
switch status.UserStatusType() {
case client.TypeUserStatusOnline:
textStatus = "Online"
case client.TypeUserStatusRecently:
show, textStatus = "dnd", "Last seen recently"
case client.TypeUserStatusLastWeek:
show, textStatus = "unavailable", "Last seen last week"
case client.TypeUserStatusLastMonth:
show, textStatus = "unavailable", "Last seen last month"
case client.TypeUserStatusEmpty:
show, textStatus = "unavailable", "Last seen a long time ago"
case client.TypeUserStatusOffline:
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offlineStatus, _ := status.(*client.UserStatusOffline)
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// this will stop working in 2038 O\
elapsed := time.Now().Unix() - int64(offlineStatus.WasOnline)
if elapsed < 3600 {
show = "away"
} else {
show = "xa"
}
// TODO: timezone
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textStatus = time.Unix(int64(offlineStatus.WasOnline), 0).Format("Last seen at 15:04 02/01/2006")
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}
return show, textStatus
}
func (c *Client) processStatusUpdate(chatID int32, status string, show string, args ...args.V) error {
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if !c.online {
return nil
}
log.WithFields(log.Fields{
"chat_id": chatID,
}).Info("Status update for")
chat, user, err := c.GetContactByID(chatID, nil)
if err != nil {
return err
}
var photo string
if chat != nil && chat.Photo != nil {
path := chat.Photo.Small.Local.Path
file, err := os.Open(path)
if err == nil {
defer file.Close()
hash := sha1.New()
_, err = io.Copy(hash, file)
if err == nil {
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photo = fmt.Sprintf("%x", hash.Sum(nil))
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} else {
log.Errorf("Error calculating hash: %v", path)
}
} else if path != "" {
log.Errorf("Photo does not exist: %v", path)
}
}
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if status == "" {
if user != nil {
show, status = userStatusToText(user.Status)
} else {
show, status = "chat", chat.Title
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}
}
gateway.SendPresence(
c.xmpp,
c.jid,
gateway.SPFrom(strconv.Itoa(int(chatID))),
gateway.SPShow(show),
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gateway.SPStatus(status),
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gateway.SPPhoto(photo),
gateway.SPImmed(gateway.SPImmed.Get(args)),
)
return nil
}
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func (c *Client) formatContact(chatID int32) string {
if chatID == 0 {
return ""
}
chat, user, err := c.GetContactByID(chatID, nil)
if err != nil {
return "unknown contact: " + err.Error()
}
var str string
if chat != nil {
str = fmt.Sprintf("%s (%v)", chat.Title, chat.Id)
} else if user != nil {
username := user.Username
if username == "" {
username = strconv.Itoa(int(user.Id))
}
str = fmt.Sprintf("%s %s (%v)", user.FirstName, user.LastName, username)
} else {
str = strconv.Itoa(int(chatID))
}
str = spaceRegex.ReplaceAllString(str, " ")
return str
}
func (c *Client) formatMessage(chatID int64, messageID int64, preview bool, message *client.Message) string {
var err error
if message == nil {
message, err = c.client.GetMessage(&client.GetMessageRequest{
ChatId: chatID,
MessageId: messageID,
})
if err != nil {
return "<error fetching message>"
}
}
if message == nil {
return ""
}
var str strings.Builder
str.WriteString(fmt.Sprintf("%v | %s | ", message.Id, c.formatContact(message.SenderUserId)))
// TODO: timezone
if !preview {
str.WriteString(time.Unix(int64(message.Date), 0).UTC().Format("02 Jan 2006 15:04:05 | "))
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}
var text string
switch message.Content.MessageContentType() {
case client.TypeMessageText:
messageText, _ := message.Content.(*client.MessageText)
text = messageText.Text.Text
// TODO: handle other message types with labels (not supported in Zhabogram!)
}
if text != "" {
if !preview {
str.WriteString(text)
} else {
newlinePos := strings.Index(text, newlineChar)
if !preview || newlinePos == -1 {
str.WriteString(text)
} else {
str.WriteString(text[0:newlinePos])
}
}
}
return str.String()
}
func (c *Client) formatContent(file *client.File, filename string) string {
if file == nil {
return ""
}
return fmt.Sprintf(
"%s (%v kbytes) | %s/%s%s",
filename,
file.Size/1024,
c.content.Link,
fmt.Sprintf("%x", sha256.Sum256([]byte(file.Remote.Id))),
filepath.Ext(filename),
)
}
func (c *Client) messageToText(message *client.Message) string {
switch message.Content.MessageContentType() {
case client.TypeMessageSticker:
sticker, _ := message.Content.(*client.MessageSticker)
return sticker.Sticker.Emoji
case client.TypeMessageBasicGroupChatCreate, client.TypeMessageSupergroupChatCreate:
return "has created chat"
case client.TypeMessageChatJoinByLink:
return "joined chat via invite link"
case client.TypeMessageChatAddMembers:
addMembers, _ := message.Content.(*client.MessageChatAddMembers)
text := "invited "
if len(addMembers.MemberUserIds) > 0 {
text += c.formatContact(addMembers.MemberUserIds[0])
}
return text
case client.TypeMessageChatDeleteMember:
deleteMember, _ := message.Content.(*client.MessageChatDeleteMember)
return "kicked " + c.formatContact(deleteMember.UserId)
case client.TypeMessagePinMessage:
pinMessage, _ := message.Content.(*client.MessagePinMessage)
return "pinned message: " + c.formatMessage(message.ChatId, pinMessage.MessageId, false, nil)
case client.TypeMessageChatChangeTitle:
changeTitle, _ := message.Content.(*client.MessageChatChangeTitle)
return "chat title set to: " + changeTitle.Title
case client.TypeMessageLocation:
location, _ := message.Content.(*client.MessageLocation)
return fmt.Sprintf(
"coordinates: %v,%v | https://www.google.com/maps/search/%v,%v/",
location.Location.Latitude,
location.Location.Longitude,
location.Location.Latitude,
location.Location.Longitude,
)
case client.TypeMessagePhoto:
photo, _ := message.Content.(*client.MessagePhoto)
return photo.Caption.Text
case client.TypeMessageAudio:
audio, _ := message.Content.(*client.MessageAudio)
return audio.Caption.Text
case client.TypeMessageVideo:
video, _ := message.Content.(*client.MessageVideo)
return video.Caption.Text
case client.TypeMessageDocument:
document, _ := message.Content.(*client.MessageDocument)
return document.Caption.Text
case client.TypeMessageText:
text, _ := message.Content.(*client.MessageText)
return text.Text.Text
case client.TypeMessageVoiceNote:
voice, _ := message.Content.(*client.MessageVoiceNote)
return voice.Caption.Text
case client.TypeMessageVideoNote:
return ""
case client.TypeMessageAnimation:
animation, _ := message.Content.(*client.MessageAnimation)
return animation.Caption.Text
}
return fmt.Sprintf("unknown message (%s)", message.Content.MessageContentType())
}
func (c *Client) contentToFilename(content client.MessageContent) (*client.File, string) {
switch content.MessageContentType() {
case client.TypeMessageSticker:
sticker, _ := content.(*client.MessageSticker)
return sticker.Sticker.Sticker, "sticker.webp"
case client.TypeMessageVoiceNote:
voice, _ := content.(*client.MessageVoiceNote)
return voice.VoiceNote.Voice, fmt.Sprintf("voice note (%v s.).oga", voice.VoiceNote.Duration)
case client.TypeMessageVideoNote:
video, _ := content.(*client.MessageVideoNote)
return video.VideoNote.Video, fmt.Sprintf("video note (%v s.).mp4", video.VideoNote.Duration)
case client.TypeMessageAnimation:
animation, _ := content.(*client.MessageAnimation)
return animation.Animation.Animation, "animation.mp4"
case client.TypeMessagePhoto:
photo, _ := content.(*client.MessagePhoto)
sizes := photo.Photo.Sizes
if len(sizes) > 1 {
file := sizes[len(sizes)-1].Photo
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return file, strconv.Itoa(int(file.Id)) + ".jpg"
}
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return nil, ""
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case client.TypeMessageAudio:
audio, _ := content.(*client.MessageAudio)
return audio.Audio.Audio, audio.Audio.FileName
case client.TypeMessageVideo:
video, _ := content.(*client.MessageVideo)
return video.Video.Video, video.Video.FileName
case client.TypeMessageDocument:
document, _ := content.(*client.MessageDocument)
return document.Document.Document, document.Document.FileName
}
return nil, ""
}
func (c *Client) messageToPrefix(message *client.Message, fileString string) string {
prefix := []string{}
// message direction
var directionChar string
if message.IsOutgoing {
directionChar = "➡ "
} else {
directionChar = "⬅ "
}
prefix = append(prefix, directionChar+strconv.Itoa(int(message.Id)))
// show sender in group chats
if message.ChatId < 0 && message.SenderUserId != 0 {
prefix = append(prefix, c.formatContact(message.SenderUserId))
}
if message.ForwardInfo != nil {
switch message.ForwardInfo.Origin.MessageForwardOriginType() {
case client.TypeMessageForwardOriginUser:
originUser := message.ForwardInfo.Origin.(*client.MessageForwardOriginUser)
prefix = append(prefix, "fwd: "+c.formatContact(originUser.SenderUserId))
case client.TypeMessageForwardOriginHiddenUser:
originUser := message.ForwardInfo.Origin.(*client.MessageForwardOriginHiddenUser)
prefix = append(prefix, fmt.Sprintf("fwd: anonymous (%s)", originUser.SenderName))
case client.TypeMessageForwardOriginChannel:
channel := message.ForwardInfo.Origin.(*client.MessageForwardOriginChannel)
var signature string
if channel.AuthorSignature != "" {
signature = fmt.Sprintf(" (%s)", channel.AuthorSignature)
}
prefix = append(prefix, "fwd: "+c.formatContact(int32(channel.ChatId))+signature)
}
}
// reply to
if message.ReplyToMessageId != 0 {
prefix = append(prefix, "reply: "+c.formatMessage(message.ChatId, message.ReplyToMessageId, true, nil))
}
if fileString != "" {
prefix = append(prefix, "file: "+fileString)
}
return strings.Join(prefix, " | ")
}
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func (c *Client) ProcessOutgoingMessage(chatID int, text string, messageID int) {
// TODO
}