telegram-bot-lua

A feature-filled Telegram bot API library written in Lua, created by Matt. This library includes functions that allow you to use any Telegram bot API method. It is frequently updated and also includes extensive tools to reduce the amount of code needed to perform more elaborate and complex actions.

This library was written to complement the "mattata" project, allowing anybody to create their own Telegram bot with little coding knowledge needed (that is, except a basic knowledge of Lua and the inspiration provided by @mattatabot and this library).

Contents
Installation
Update Handling
API Methods
Building Inline Results
Building Reply Markup
Building Mask Positioning Arrays

Installation

To install this library, make sure you have Lua 5.3 and LuaRocks installed, then run luarocks install telegram-bot-lua. That's it! Now you just need to include it in your bot's source code, with the configure function passing your bot auth token (the one you received from the BotFather), like this:

local api = require('telegram-bot-lua.core').configure('bot123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11')

Now you're ready to create your own bot!

Update Handling

The Telegram bot API returns updates in the form of a JSON-encoded object. This object has several different types of updates, and there is a function for each one - they are all optional, but if you didn't use any of them then your bot wouldn't do anything.

To handle messages (a.k.a. the update.message object), you need to use the api.on_message(message) function. The example shown below would iterate over every update.message object, and reply to messages that contain the text ping with the word pong:

function api.on_message(message)
    if message.text
    and message.text:match('ping')
    then
        api.send_message(
            message.chat.id,
            'pong'
        )
    end
end

You'll notice I've used another function from the telegram-bot-lua library we included as api. There is a function for every method in the Telegram bot API. Scroll down to see examples of method-binded functions.

To handle channel posts (a.k.a. the update.channel_post object), you need to use the api.on_channel_post(channel_post) function. The example shown below would iterate over every update.channel_post object, and reply to channel posts that contain the text ping with the word pong:

function api.on_channel_post(channel_post)
    if channel_post.text
    and channel_post.text:match('ping')
    then
        api.send_message(
            channel_post.chat.id,
            'pong'
        )
    end
end

The reason channel posts are handled in a different function to messages is because messages always contain an object containing information about the sender (a.k.a. update.message.from), whereas channel posts only hold this information if the Sign Messages option is enabled in the channel settings.

To handle edited messages (a.k.a. the update.edited_message object), you need to use the api.on_edited_message(edited_message) function. The example shown below would iterate over every update.edited_message object and reply to messages that have been edited to contain the text ping with the word pong:

function api.on_edited_message(edited_message)
    if edited_message.text
    and edited_message.text:match('ping')
    then
        api.send_message(
            edited_message.chat.id,
            'pong'
        )
    end
end

To handle edited channel posts (a.k.a. the update.edited_channel_post object), you need to use the api.on_edited_channel_post(edited_channel_post) function. The example shown below would iterate over every update.edited_channel_post object and reply to channel posts that have been edited to contain the text ping with the word pong:

function api.on_edited_channel_post(edited_channel_post)
    if edited_channel_post.text
    and edited_channel_post.text:match('ping')
    then
        api.send_message(
            edited_channel_post.chat.id,
            'pong'
        )
    end
end

To handle inline queries (a.k.a. the update.inline_query object), you need to use the api.on_inline_query(inline_query) function. The example shown below would iterate over every update.inline_query object, and respond with an inline article:

function api.on_inline_query(inline_query)
    api.answer_inline_query(
        inline_query.id,
        api.inline_result()
        :type('article')
        :id(1)
        :title('Title')
        :description('Description')
        :input_message_content(
            api.input_text_message_content('Message')
        )
    )
end

The api.inline_result() function is one of the many extensive tools this API offers - this particular one allows you to build inline results using Lua methods through metatables.

To handle chosen inline results (a.k.a. the update.chosen_inline_result object), you need to use the api.on_chosen_inline_result(chosen_inline_result) function. The example shown below would iterate over every update.chosen_inline_result object, and print the JSON-encoded object to the terminal, using the dkjson library:

function api.on_chosen_inline_result(chosen_inline_result)
    local json = require('dkjson')
    print(
        json.encode(chosen_inline_result)
    )
end

To handle callback queries (a.k.a. the update.callback_query object), you need to use the api.on_callback_query(callback_query) function. The example shown below would iterate over every update.callback_query object, and send an alert to the person who pressed the inline keyboard button, containing their numerical ID:

function api.on_callback_query(callback_query)
    api.answer_callback_query(
        callback_query.id,
        callback_query.from.id
    )
end

To handle shipping queries (a.k.a. the update.shipping_query object), you need to use the api.on_shipping_query(shipping_query) function. The example shown below would iterate over every update.shipping_query object, and print its JSON-encoded version to the terminal:

function api.on_shipping_query(shipping_query)
    local json = require('dkjson')
    print(
        json.encode(shipping_query)
    )
end

To handle pre checkout queries (a.k.a. the update.pre_checkout_query object), you need to use the api.on_pre_checkout_query(pre_checkout_query) function. The example shown below would iterate over every update.pre_checkout_query object, and print its JSON-encoded version to the terminal:

function api.on_pre_checkout_query(pre_checkout_query)
    local json = require('dkjson')
    print(
        json.encode(pre_checkout_query)
    )
end

Although it's recommended to do so, you're not limited to handling specific update types through these functions – to do something with the original update object, use the function api.on_update(update). The example shown below would iterate over every update object, and print the update type to the terminal:

function api.on_update(update)
    if update.message
    then
        print('message')
    elseif update.edited_message
    then
        print('edited message')
    elseif update.channel_post
    then
        print('channel post')
    elseif update.edited_channel_post
    then
        print('edited channel post')
    elseif update.inline_query
    then
        print('inline query')
    elseif update.callback_query
    then
        print('callback query')
    elseif update.chosen_inline_result
    then
        print('chosen inline result')
    elseif update.shipping_query
    then
        print('shipping query')
    elseif update.pre_checkout_query
    then
        print('pre checkout query')
    else
        print('unknown update type')
    end
end

After these functions, you must use:

api.run()

This is what will run your bot!

API Methods

Contents
getMe
getUpdates
sendMessage
forwardMessage
sendPhoto
sendAudio
sendDocument
sendSticker
sendVideo
sendVoice
sendLocation
sendVenue
sendContact
sendChatAction
getUserProfilePhotos
getFile
kickChatMember
unbanChatMember
restrictChatMember
promoteChatMember
exportChatInviteLink
leaveChat
getChat
getChatAdministrators
getChatMembersCount
getChatMember
answerCallbackQuery
editMessageText
editMessageCaption
editMessageReplyMarkup
answerInlineQuery
sendInvoice
answerShippingQuery
sendGame
setGameScore
getGameHighScores

getMe

A simple function for testing your bot's auth token, using Telegram's getMe method. Requires no parameters.

api.get_me()

getUpdates

Use this function to receive incoming updates via long polling, using Telegram's getUpdates method.

api.get_updates(
    offset,
    limit,
    timeout,
    allowed_updates
)

Parameters	Type	Required	Description
offset	Integer	Optional	Identifier of the first update to be returned. Must be greater by one than the highest among the identifiers of previously received updates. By default, updates starting with the earliest unconfirmed update are returned. An update is considered confirmed as soon as getUpdates is called with an offset higher than its update_id. The negative offset can be specified to retrieve updates starting from -offset update from the end of the updates queue. All previous updates will forgotten.
limit	Integer	Optional	Limits the number of updates to be retrieved. Values between 1—100 are accepted. Defaults to 100.
timeout	Integer	Optional	Timeout in seconds for long polling. Defaults to 0, i.e. usual short polling. Should be positive, short polling should be used for testing purposes only.
allowed_updates	Array of String	Optional	List the types of updates you want your bot to receive. For example, specify [“message”, “edited_channel_post”, “callback_query”] to only receive updates of these types. Specify an empty list to receive all updates regardless of type (default). If not specified the previous setting will be used. Please note that this parameter doesn't affect updates created before the call to the getUpdates, so unwanted updates may be received for a short period of time.

sendMessage

Use this function to send text messages, using Telegram's sendMessage method.

api.send_message(
    chat_id,
    text,
    parse_mode,
    disable_web_page_preview,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
text	String	Yes	Text of the message to be sent
parse_mode	String	Optional	Send Markdown or HTML, if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your bot's message.
disable_web_page_preview	Boolean	Optional	Disables link previews for links in this message
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

forwardMessage

Use this function to forward messages of any kind, using Telegram's forwardMessage method.

api.forward_message(
    chat_id,
    from_chat_id,
    disable_notification,
    message_id
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
from_chat_id	Integer or String	Yes	Unique identifier for the chat where the original message was sent (or channel username in the format @channelusername)
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
message_id	Integer	Yes	Message identifier in the chat specified in from_chat_id

sendPhoto

Use this function to send photos, using Telegram's sendPhoto method.

api.send_photo(
    chat_id,
    photo,
    caption,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
photo	InputFile or String	Yes	Photo to send. Pass a file_id as String to send a photo that exists on the Telegram servers (recommended), pass an HTTP URL as a String for Telegram to get a photo from the Internet, or upload a new photo using multipart/form-data.
caption	String	Optional	Photo caption (may also be used when resending photos by file_id), 0-200 characters
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

sendAudio

Use this function to send audio files, using Telegram's sendAudio method, if you want Telegram clients to display them in the music player. Your audio must be in the .mp3 format. Bots can currently send audio files of up to 50 MB in size, this limit may be changed in the future.

api.send_audio(
    chat_id,
    audio,
    caption,
    duration,
    performer,
    title,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
audio	InputFile or String	Yes	Audio file to send. Pass a file_id as String to send an audio file that exists on the Telegram servers (recommended), pass an HTTP URL as a String for Telegram to get an audio file from the Internet, or upload a new one using multipart/form-data.
caption	String	Optional	Audio caption, 0-200 characters
duration	Integer	Optional	Duration of the audio in seconds
performer	String	Optional	Performer
title	String	Optional	Track name
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

sendDocument

Use this function to send general files, using Telegram's sendDocument method. Bots can currently send files of any type of up to 50 MB in size, this limit may be changed in the future.

api.send_document(
    chat_id,
    document,
    caption,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
document	InputFile or String	Yes	File to send. Pass a file_id as String to send a file that exists on the Telegram servers (recommended), pass an HTTP URL as a String for Telegram to get a file from the Internet, or upload a new one using multipart/form-data.
caption	String	Optional	Document caption (may also be used when resending documents by file_id), 0-200 characters
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

sendSticker

Use this function to send .webp stickers, using Telegram's sendSticker method.

api.send_sticker(
    chat_id,
    sticker,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
sticker	InputFile or String	Yes	Sticker to send. Pass a file_id as String to send a file that exists on the Telegram servers (recommended), pass an HTTP URL as a String for Telegram to get a .webp file from the Internet, or upload a new one using multipart/form-data.
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

sendVideo

Use this function to send video files, using Telegram's sendVideo method. Telegram clients support .mp4 videos (other formats may be sent using sendDocument). Bots can currently send video files of up to 50 MB in size, this limit may be changed in the future.

api.send_video(
    chat_id,
    video,
    duration,
    width,
    height,
    caption,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
video	InputFile or String	Yes	Video to send. Pass a file_id as String to send a video that exists on the Telegram servers (recommended), pass an HTTP URL as a String for Telegram to get a video from the Internet, or upload a new video using multipart/form-data.
duration	Integer	Optional	Duration of sent video in seconds
width	Integer	Optional	Video width
height	Integer	Optional	Video height
caption	String	Optional	Video caption (may also be used when resending videos by file_id), 0-200 characters
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

sendVoice

Use this function to send audio files, using Telegram's sendVoice method, if you want Telegram clients to display the file as a playable voice message. For this to work, your audio must be in an .ogg file encoded with OPUS (other formats may be sent as Audio or Document). Bots can currently send voice messages of up to 50 MB in size, this limit may be changed in the future.

api.send_voice(
    chat_id,
    voice,
    caption,
    duration,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
voice	InputFile or String	Yes	Audio file to send. Pass a file_id as String to send a file that exists on the Telegram servers (recommended), pass an HTTP URL as a String for Telegram to get a file from the Internet, or upload a new one using multipart/form-data.
caption	String	Optional	Voice message caption, 0-200 characters
duration	Integer	Optional	Duration of the voice message in seconds
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

sendLocation

Use this function to send a location on a map, using Telegram's sendLocation method.

api.send_location(
    chat_id,
    latitude,
    longitude,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
latitude	Float number	Yes	Latitude of location
longitude	Float number	Yes	Longitude of location
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

sendVenue

Use this function to send information about a venue, using Telegram's sendVenue method.

api.send_venue(
    chat_id,
    latitude,
    longitude,
    title,
    address,
    foursquare_id,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
latitude	Float number	Yes	Latitude of the venue
longitude	Float number	Yes	Longitude of the venue
title	String	Yes	Name of the venue
address	String	Yes	Address of the venue
foursquare_id	String	Optional	Foursquare identifier of the venue
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove reply keyboard or to force a reply from the user.

sendContact

Use this function to send phone contacts, using Telegram's sendContact method.

api.send_contact(
    chat_id,
    phone_number,
    first_name,
    last_name,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
phone_number	String	Yes	Contact's phone number
first_name	String	Yes	Contact's first name
last_name	String	Optional	Contact's last name
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup or ReplyKeyboardMarkup or ReplyKeyboardRemove or ForceReply	Optional	Additional interface options. A JSON-serialized object for an inline keyboard, custom reply keyboard, instructions to remove keyboard or to force a reply from the user.

sendChatAction

Use this function when you need to tell the user that something is happening on the bot's side, using Telegram's sendChatAction method. The status is set for 5 seconds or less (when a message arrives from your bot, Telegram clients clear its typing status).

api.send_chat_action(
    chat_id,
    action
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
action	String	Yes	Type of action to broadcast. Choose one, depending on what the user is about to receive: typing for text messages, upload_photo for photos, record_video or upload_video for videos, record_audio or upload_audio for audio files, upload_document for general files, find_location for location data.

getUserProfilePhotos

Use this function to get a list of profile pictures for a user, using Telegram's getUserProfilePhotos method.

api.get_user_profile_photos(
    user_id,
    offset,
    limit
)

Parameters	Type	Required	Description
user_id	Integer	Yes	Unique identifier of the target user
offset	Integer	Optional	Sequential number of the first photo to be returned. By default, all photos are returned.
limit	Integer	Optional	Limits the number of photos to be retrieved. Values between 1—100 are accepted. Defaults to 100.

getFile

Use this function to get basic info about a file and prepare it for downloading, using Telegram's getFile method. For the moment, bots can download files of up to 20MB in size. The file can then be downloaded via the link https://api.telegram.org/file/bot<token>/<file_path>, where <file_path> is taken from the response. It is guaranteed that the link will be valid for at least 1 hour. When the link expires, a new one can be requested by calling this method again, also using this function.

api.get_file(file_id)

Parameters	Type	Required	Description
file_id	String	Yes	File identifier to get info about

kickChatMember

There are two functions that use this method. One of them kicks the user, and one of them bans the user. By kick, we mean a "soft-ban" - where the user is removed, and then instantly unbanned. A ban means the user cannot return to the group unless unbanned.

To kick a user, use:

api.kick_chat_member(
    chat_id,
    user_id
)

To ban a user, use:

api.ban_chat_member(
    chat_id,
    user_id
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target group or username of the target supergroup (in the format @supergroupusername)
user_id	Integer	Yes	Unique identifier of the target user

unbanChatMember

Use this function to unban a previously kicked user in a supergroup, using Telegram's unbanChatMember method. The user will not return to the group automatically, but will be able to join via link, etc. The bot must be an administrator in the group for this to work.

api.unban_chat_member(
    chat_id,
    user_id
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target group or username of the target supergroup (in the format @supergroupusername)
user_id	Integer	Yes	Unique identifier of the target user

restrictChatMember

Use this function to restrict a user in a supergroup, using Telegram's restrictChatMember method. The bot must be an administrator in the supergroup for this to work and must have the appropriate admin rights. Pass True for all boolean parameters to lift restrictions from a user.

api.restrict_chat_member(
    chat_id,
    user_id,
    until_date,
    can_send_messages,
    can_send_media_messages,
    can_send_other_messages,
    can_add_web_page_previews
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target supergroup (in the format @supergroupusername)
user_id	Integer	Yes	Unique identifier of the target user
until_date	Integer	No	Date when restrictions will be lifted for the user, unix time. If user is restricted for more than 366 days or less than 30 seconds from the current time, they are considered to be restricted forever
can_send_messages	Boolean	No	Pass True, if the user can send text messages, contacts, locations and venues
can_send_media_messages	Boolean	No	Pass True, if the user can send audios, documents, photos, videos, video notes and voice notes, implies can_send_messages
can_send_other_messages	Boolean	No	Pass True, if the user can send animations, games, stickers and use inline bots, implies can_send_media_messages
can_send_web_page_previews	Boolean	No	Pass True, if the user may add web page previews to their messages, implies can_send_media_messages

promoteChatMember

Use this function to promote or demote a user in a supergroup or a channel, using Telegram's promoteChatMember method. The bot must be an administrator in the chat for this to work and must have the appropriate admin rights. Pass False for all boolean parameters to demote a user.

api.promote_chat_member(
    chat_id,
    user_id,
    can_change_info,
    can_post_messages,
    can_edit_messages,
    can_delete_messages,
    can_invite_users,
    can_restrict_members,
    can_pin_messages,
    can_promote_members
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target channel (in the format @channelusername)
user_id	Integer	Yes	Unique identifier of the target user
can_change_info	Boolean	No	Pass True, if the administrator can change chat title, photo and other settings
can_post_messages	Boolean	No	Pass True, if the administrator can create channel posts, channels only
can_edit_messages	Boolean	No	Pass True, if the administrator can edit messages of other users, channels only
can_delete_messages	Boolean	No	Pass True, if the administrator can delete messages of other users
can_invite_users	Boolean	No	Pass True, if the administrator can invite new users to the chat
can_restrict_members	Boolean	No	Pass True, if the administrator can restrict, ban or unban chat members
can_pin_messages	Boolean	No	Pass True, if the administrator can pin messages, supergroups only
can_promote_members	Boolean	No	Pass True, if the administrator can add new administrators with a subset of their own privileges or demote administrators that they have promoted, directly or indirectly

exportChatInviteLink

Use this function to export an invite link to a supergroup or a channel, using Telegram's exportChatInviteLink method. The bot must be an administrator in the chat for this to work and must have the appropriate admin rights.

api.export_chat_invite_link(chat_id)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target supergroup or channel (in the format @channelusername)

leaveChat

Use this function for your bot to leave a group, supergroup or channel, using Telegram's leaveChat method.

api.leave_chat(chat_id)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target supergroup or channel (in the format @channelusername)

getChat

Use this function to get up to date information about the chat (current name of the user for one-on-one conversations, current username of a user, group or channel, etc.), using Telegram's getChat method.

api.get_chat(chat_id)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target supergroup or channel (in the format @channelusername)

getChatAdministrators

Use this function to get a list of administrators in a chat, using Telegram's getChatAdministrators method. If the chat is a group or a supergroup and no administrators were appointed, only the creator will be returned.

api.get_chat_administrators(chat_id)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target supergroup or channel (in the format @channelusername)

getChatMembersCount

Use this function to get the number of members in a chat, using Telegram's getChatMembersCount method.

api.get_chat_members_count(chat_id)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target supergroup or channel (in the format @channelusername)

getChatMember

Use this function to get information about a member of a chat, using Telegram's getChatMember method.

api.get_chat_member(
    chat_id,
    user_id
)

Parameters	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target supergroup or channel (in the format @channelusername)
user_id	Integer	Yes	Unique identifier of the target user

answerCallbackQuery

Use this function to send answers to callback queries sent from inline keyboards, using Telegram's answerCallbackQuery method. The answer will be displayed to the user as a notification at the top of the chat screen or as an alert.

Alternatively, the user can be redirected to the specified Game URL. For this option to work, you must first create a game for your bot via the BotFather and accept the terms. Otherwise, you may use links like telegram.me/your_bot?start=XXXX that open your bot with a parameter.

api.answer_callback_query(
    callback_query_id,
    text,
    show_alert,
    url,
    cache_time
)

Parameters	Type	Required	Description
callback_query_id	String	Yes	Unique identifier for the query to be answered
text	String	Optional	Text of the notification. If not specified, nothing will be shown to the user, 0-200 characters
show_alert	Boolean	Optional	If true, an alert will be shown by the client instead of a notification at the top of the chat screen. Defaults to false.
url	String	Optional	URL that will be opened by the user's client. If you have created a Game and accepted the conditions via @Botfather, specify the URL that opens your game – note that this will only work if the query comes from a callback_game button. Otherwise, you may use links like telegram.me/your_bot?start=XXXX that open your bot with a parameter.
cache_time	Integer	Optional	The maximum amount of time in seconds that the result of the callback query may be cached client-side. Telegram apps will support caching starting in version 3.14. Defaults to 0.

editMessageText

Use this function to edit text and game messages sent by the bot or via the bot (for inline bots), using Telegram's editMessageText method.

api.edit_message_text(
    chat_id,
    message_id,
    text,
    parse_mode,
    disable_web_page_preview,
    reply_markup,
    inline_message_id
)

Parameters	Type	Required	Description
chat_id	Integer or String	Optional	Required if inline_message_id is not specified. Unique identifier for the target chat or username of the target channel (in the format @channelusername)
message_id	Integer	Optional	Required if inline_message_id is not specified. Identifier of the sent message
text	String	Yes	New text of the message
parse_mode	String	Optional	Send Markdown or HTML, if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your bot's message.
disable_web_page_preview	Boolean	Optional	Disables link previews for links in this message
reply_markup	InlineKeyboardMarkup	Optional	A JSON-serialized object for an inline keyboard.
inline_message_id	String	Optional	Required if chat_id and message_id are not specified. Identifier of the inline message

editMessageCaption

Use this function to edit captions of messages sent by the bot or via the bot (for inline bots), using Telegram's editMessageCaption method.

api.edit_message_caption(
    chat_id,
    message_id,
    caption,
    reply_markup,
    inline_message_id
)

Parameters	Type	Required	Description
chat_id	Integer or String	Optional	Required if inline_message_id is not specified. Unique identifier for the target chat or username of the target channel (in the format @channelusername)
message_id	Integer	Optional	Required if inline_message_id is not specified. Identifier of the sent message
caption	String	Optional	New caption of the message
reply_markup	InlineKeyboardMarkup	Optional	A JSON-serialized object for an inline keyboard.
inline_message_id	String	Optional	Required if chat_id and message_id are not specified. Identifier of the inline message

editMessageReplyMarkup

Use this function to edit only the reply markup of messages sent by the bot or via the bot (for inline bots), using Telegram's editMessageReplyMarkup method.

api.edit_message_reply_markup(
    chat_id,
    message_id,
    inline_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer or String	Optional	Required if inline_message_id is not specified. Unique identifier for the target chat or username of the target channel (in the format @channelusername)
message_id	Integer	Optional	Required if inline_message_id is not specified. Identifier of the sent message
inline_message_id	String	Optional	Required if chat_id and message_id are not specified. Identifier of the inline message
reply_markup	InlineKeyboardMarkup	Optional	A JSON-serialized object for an inline keyboard.

answerInlineQuery

Use this function to send answers to an inline query, using Telegram's answerInlineQuery method. No more than 50 results per query are allowed.

api.answer_inline_query(
    inline_query_id,
    results,
    switch_pm_text,
    switch_pm_parameter,
    cache_time,
    is_personal,
    next_offset
)

Parameters	Type	Required	Description
inline_query_id	String	Yes	Unique identifier for the answered query
results	Array of InlineQueryResult	Yes	A JSON-serialized array of results for the inline query
switch_pm_text	String	Optional	If passed, clients will display a button with specified text that switches the user to a private chat with the bot and sends the bot a start message with the parameter switch_pm_parameter
switch_pm_parameter	String	Optional	Parameter for the start message sent to the bot when user presses the switch button
cache_time	Integer	Optional	The maximum amount of time in seconds that the result of the inline query may be cached on the server. Defaults to 0.
is_personal	Boolean	Optional	Pass True, if results may be cached on the server side only for the user that sent the query. By default, results may be returned to any user who sends the same query
next_offset	String	Optional	Pass the offset that a client should send in the next query with the same text to receive more results. Pass an empty string if there are no more results or if you don‘t support pagination. Offset length can’t exceed 64 bytes.

sendInvoice

Use this function to send invoices, using Telegram's sendInvoice method.

api.send_invoice(
    chat_id,
    title,
    description,
    payload,
    provider_token,
    start_parameter,
    currency,
    prices,
    photo_url,
    photo_size,
    photo_width,
    photo_height,
    need_name,
    need_phone_number,
    need_email,
    need_shipping_address,
    is_flexible,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer	Yes	Unique identifier for the target private chat
title	String	Yes	Product name
description	String	Yes	Product description
payload	String	Yes	Bot-defined invoice payload, 1-128 bytes. This will not be displayed to the user, use for your internal processes.
provider_token	String	Yes	Payments provider token, obtained via Botfather
start_parameter	String	Yes	Unique deep-linking parameter that can be used to generate this invoice when used as a start parameter
currency	String	Yes	Three-letter ISO 4217 currency code
prices	Array of LabeledPrice	Yes	Price breakdown, a list of components (e.g. product price, tax, discount, delivery cost, delivery tax, bonus, etc.)
photo_url	String	Optional	URL of the product photo for the invoice. Can be a photo of the goods or a marketing image for a service. People like it better when they see what they are paying for.
photo_size	Integer	Optional	Photo size
photo_width	Integer	Optional	Photo width
photo_height	Integer	Optional	Photo height
need_name	Boolean	Optional	Pass True, if you require the user's full name to complete the order
need_phone_number	Boolean	Optional	Pass True, if you require the user's phone number to complete the order
need_email	Boolean	Optional	Pass True, if you require the user's email to complete the order
need_shipping_address	Boolean	Optional	Pass True, if you require the user's shipping address to complete the order
is_flexible	Boolean	Optional	Pass True, if the final price depends on the shipping method
disable_notification	Boolean	Optional	Sends the message silently. Users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup	Optional	A JSON-serialized object for an inline keyboard. If empty, one 'Pay total price' button will be shown. If not empty, the first button must be a Pay button.

answerShippingQuery

Use this function to reply to shipping queries using Telegram's answerShippingQuery method. If you sent an invoice requesting a shipping address and the parameter is_flexible was specified, the Bot API will send an Update with a shipping_query field to the bot.

api.answer_shipping_query(
    shipping_query_id,
    ok,
    shipping_options,
    error_message
)

Parameters	Type	Required	Description
shipping_query_id	String	Yes	Unique identifier for the query to be answered
ok	Boolean	Yes	Specify True if delivery to the specified address is possible and False,if there are any problems (for example, if delivery to the specified,address is not possible)
shipping_options	Array of ShippingOption	Optional	Required if ok is True. A JSON-serialized array of available shipping options.
error_message	String	Optional	Required if ok is False. Error message in human readable form,that explains why it is impossible to complete the order (e.g. "Sorry, delivery to your desired address is unavailable'). Telegram will display,this message to the user.

sendGame

Use this function to send a game, using Telegram's sendGame method.

api.send_game(
    chat_id,
    game_short_name,
    disable_notification,
    reply_to_message_id,
    reply_markup
)

Parameters	Type	Required	Description
chat_id	Integer	Yes	Unique identifier for the target chat
game_short_name	String	Yes	Short name of the game, serves as the unique identifier for the game. Set up your games via Botfather.
disable_notification	Boolean	Optional	Sends the message silently. iOS users will not receive a notification, Android users will receive a notification with no sound.
reply_to_message_id	Integer	Optional	If the message is a reply, ID of the original message
reply_markup	InlineKeyboardMarkup	Optional	A JSON-serialized object for an inline keyboard. If empty, one ‘Play game_title’ button will be shown. If not empty, the first button must launch the game.

setGameScore

Use this function to set the score of the specified user in a game, using Telegram's setGameScore method.

api.set_game_score(
    chat_id,
    user_id,
    message_id,
    score,
    force,
    disable_edit_message,
    inline_message_id
)

Parameters	Type	Required	Description
chat_id	Integer	Optional	Required if inline_message_id is not specified. Unique identifier for the target chat
user_id	Integer	Yes	User identifier
message_id	Integer	Optional	Required if inline_message_id is not specified. Identifier of the sent message
score	Integer	Yes	New score, must be non-negative
force	Boolean	Optional	Pass True, if the high score is allowed to decrease. This can be useful when fixing mistakes or banning cheaters
disable_edit_message	Boolean	Optional	Pass True, if the game message should not be automatically edited to include the current scoreboard
inline_message_id	String	Optional	Required if chat_id and message_id are not specified. Identifier of the inline message

getGameHighScores

Use this function to get data for high score tables, using Telegram's getGameHighScores method. Will return the score of the specified user and several of his neighbors in a game.

The method this function uses will currently return scores for the target user, plus two of his closest neighbors on each side. Will also return the top three users if the user and his neighbors are not among them. Please note that this behavior is subject to change.

api.get_game_high_scores(
    chat_id,
    user_id,
    message_id,
    inline_message_id
)

Parameters	Type	Required	Description
chat_id	Integer	Optional	Required if inline_message_id is not specified. Unique identifier for the target chat
user_id	Integer	Yes	Target user id
message_id	Integer	Optional	Required if inline_message_id is not specified. Identifier of the sent message
inline_message_id	String	Optional	Required if chat_id and message_id are not specified. Identifier of the inline message

Building Inline Results

There are quite a few types of inline results:

• InlineQueryResultCachedAudio
• InlineQueryResultCachedDocument
• InlineQueryResultCachedGif
• InlineQueryResultCachedMpeg4Gif
• InlineQueryResultCachedPhoto
• InlineQueryResultCachedSticker
• InlineQueryResultCachedVideo
• InlineQueryResultCachedVoice
• InlineQueryResultArticle
• InlineQueryResultAudio
• InlineQueryResultContact
• InlineQueryResultGame
• InlineQueryResultDocument
• InlineQueryResultGif
• InlineQueryResultLocation
• InlineQueryResultMpeg4Gif
• InlineQueryResultPhoto
• InlineQueryResultVenue
• InlineQueryResultVideo
• InlineQueryResultVoice

There is one global function for building an inline result:

api.inline_result()

You then build the inline result using Lua methods. Each inline query result has a table of fields - some which are required, and some which are optional. The api.inline_result() function has a method for every single parameter, where the method name is the parameter name. To build an inline articule result, you'd use:

api.inline_result():type('article'):id(1):title('Title'):description('Description'):input_message_content(
    api.input_text_message_content('Text')
)

You'll notice a new function inside the input_message_content method - this is one of four functions for building the input_message_content parameter. This is optional, but it saves you from manually encoding it in JSON.

This object represents the content of a message to be sent as a result of an inline query. Telegram clients currently support the following 4 types:

• InputTextMessageContent
• InputLocationMessageContent
• InputVenueMessageContent
• InputContactMessageContent

To build the InputTextMessageContent object, use the function:

api.input_text_message_content(
    text,
    parse_mode,
    disable_web_page_preview
)

To build the InputLocationMessageContent object, use the function:

api.input_location_message_content(
    latitude,
    longitude
)

To build the InputVenueMessageContent object, use the function:

api.input_venue_message_content(
    latitude,
    longitude,
    title,
    address,
    foursquare_id
)

And to build the InputContactMessageContent object, use the function:

api.input_contact_message_content(
    phone_number,
    first_name,
    last_name
)

Building Reply Markup

There are functions to build keyboards and inline keyboards in this API. To build an inline keyboard, use the following function:

api.inline_keyboard()

For each row of buttons, you need to use the row() method on the above function, with the api.row() function inside it, like this:

api.inline_keyboard():row(
    api.row()
)

But wait, this keyboard doesn't have any buttons yet! To add buttons, you need to decide which type of button you are going to use - there are currently 5:

• url
• callback_data
• switch_inline_query
• switch_inline_query_current_chat
• pay

To build a URL button, you need to use the following method with the api.inline_keyboard() and the api.row() functions:

api.inline_keyboard():row(
    api.row():url_button(
        text,
        url
    )
)

To build a callback data button, you need to use the following method in the same way as previously shown with the URL button:

api.inline_keyboard():row(
    api.row():callback_data_button(
        text,
        callback_data
    )
)

To build a switch inline query button, you need to use the following method:

api.inline_keyboard():row(
    api.row():switch_inline_query_button(
        text,
        switch_inline_query
    )
)

To build a switch inline query current chat button, you need to use the following method:

api.inline_keyboard():row(
    api.row():switch_inline_query_current_chat_button(
        text,
        switch_inline_query_current_chat
    )
)

To build a pay button, you need to use the following method:

api.inline_keyboard():row(
    api.row():pay_button(
        text,
        pay
    )
)

To add more buttons to the same row, you need to use the button method again on the api.row() function. If I wanted to have an inline keyboard with 2 buttons on the first row and 1 button on the second row, where all of the buttons are URL buttons that display the text "Google" and have the URL "https://www.google.com/", it would look like this:

api.inline_keyboard():row(
    api.row():url_button(
        'Google',
        'https://www.google.com/'
    ):url_button(
        'Google',
        'https://www.google.com/'
    )
):row(
    api.row():url_button(
        'Google',
        'https://www.google.com/'
    )
)

Building Mask Positioning Arrays

There are functions to build mask positioning arrays in this API. These are used to specify the position of various facial elements using sticker-related Telegram bot API methods. To build a mask positioning array, use the following function:

api.mask_position()

For each position, you need to use the position() method on the above function, like this:

api.mask_position():position(
    point,
    x_shift,
    y_shift,
    scale
)

Each position method requires 4 parameters.