package tgbotapi

import (
	"encoding/json"
	"errors"
	"fmt"
	"net/url"
	"strings"
	"time"
)

// APIResponse is a response from the Telegram API with the result
// stored raw.
type APIResponse struct {
	Ok          bool                `json:"ok"`
	Result      json.RawMessage     `json:"result"`
	ErrorCode   int                 `json:"error_code"`
	Description string              `json:"description"`
	Parameters  *ResponseParameters `json:"parameters"`
}

// ResponseParameters are various errors that can be returned in APIResponse.
type ResponseParameters struct {
	MigrateToChatID int64 `json:"migrate_to_chat_id"` // optional
	RetryAfter      int   `json:"retry_after"`        // optional
}

// Update is an update response, from GetUpdates.
type Update struct {
	// UpdateID is the update's unique identifier.
	// Update identifiers start from a certain positive number and increase sequentially.
	// This ID becomes especially handy if you're using Webhooks,
	// since it allows you to ignore repeated updates or to restore
	// the correct update sequence, should they get out of order.
	// If there are no new updates for at least a week, then identifier
	// of the next update will be chosen randomly instead of sequentially.
	UpdateID int `json:"update_id"`
	// Message new incoming message of any kind — text, photo, sticker, etc.
	//
	// optional
	Message *Message `json:"message"`
	// EditedMessage
	//
	// optional
	EditedMessage *Message `json:"edited_message"`
	// ChannelPost new version of a message that is known to the bot and was edited
	//
	// optional
	ChannelPost *Message `json:"channel_post"`
	// EditedChannelPost new incoming channel post of any kind — text, photo, sticker, etc.
	//
	// optional
	EditedChannelPost *Message `json:"edited_channel_post"`
	// InlineQuery new incoming inline query
	//
	// optional
	InlineQuery *InlineQuery `json:"inline_query"`
	// ChosenInlineResult is the result of an inline query
	// that was chosen by a user and sent to their chat partner.
	// Please see our documentation on the feedback collecting
	// for details on how to enable these updates for your bot.
	//
	// optional
	ChosenInlineResult *ChosenInlineResult `json:"chosen_inline_result"`
	// CallbackQuery new incoming callback query
	//
	// optional
	CallbackQuery *CallbackQuery `json:"callback_query"`
	// ShippingQuery new incoming shipping query. Only for invoices with flexible price
	//
	// optional
	ShippingQuery *ShippingQuery `json:"shipping_query"`
	// PreCheckoutQuery new incoming pre-checkout query. Contains full information about checkout
	//
	// optional
	PreCheckoutQuery *PreCheckoutQuery `json:"pre_checkout_query"`
}

// SentFrom returns the user who sent an update. Can be nil, if Telegram did not provide information
// about the user in the update object.
func (u *Update) SentFrom() *User {
	switch {
	case u.Message != nil:
		return u.Message.From
	case u.EditedMessage != nil:
		return u.EditedMessage.From
	case u.InlineQuery != nil:
		return u.InlineQuery.From
	case u.ChosenInlineResult != nil:
		return u.ChosenInlineResult.From
	case u.CallbackQuery != nil:
		return u.CallbackQuery.From
	case u.ShippingQuery != nil:
		return u.ShippingQuery.From
	case u.PreCheckoutQuery != nil:
		return u.PreCheckoutQuery.From
	default:
		return nil
	}
}

// CallbackData returns the callback query data, if it exists.
func (u *Update) CallbackData() string {
	if u.CallbackQuery != nil {
		return u.CallbackQuery.Data
	}
	return ""
}

// FromChat returns the chat where an update occured.
func (u *Update) FromChat() *Chat {
	switch {
	case u.Message != nil:
		return u.Message.Chat
	case u.EditedMessage != nil:
		return u.EditedMessage.Chat
	case u.ChannelPost != nil:
		return u.ChannelPost.Chat
	case u.EditedChannelPost != nil:
		return u.EditedChannelPost.Chat
	case u.CallbackQuery != nil:
		return u.CallbackQuery.Message.Chat
	default:
		return nil
	}
}

// UpdatesChannel is the channel for getting updates.
type UpdatesChannel <-chan Update

// Clear discards all unprocessed incoming updates.
func (ch UpdatesChannel) Clear() {
	for len(ch) != 0 {
		<-ch
	}
}

// User represents a Telegram user or bot.
type User struct {
	// ID is a unique identifier for this user or bot
	ID int `json:"id"`
	// FirstName user's or bot's first name
	FirstName string `json:"first_name"`
	// LastName user's or bot's last name
	//
	// optional
	LastName string `json:"last_name"`
	// UserName user's or bot's username
	//
	// optional
	UserName string `json:"username"`
	// LanguageCode IETF language tag of the user's language
	// more info: https://en.wikipedia.org/wiki/IETF_language_tag
	//
	// optional
	LanguageCode string `json:"language_code"`
	// IsBot true, if this user is a bot
	//
	// optional
	IsBot bool `json:"is_bot"`
}

// String displays a simple text version of a user.
//
// It is normally a user's username, but falls back to a first/last
// name as available.
func (u *User) String() string {
	if u == nil {
		return ""
	}
	if u.UserName != "" {
		return u.UserName
	}

	name := u.FirstName
	if u.LastName != "" {
		name += " " + u.LastName
	}

	return name
}

// GroupChat is a group chat.
type GroupChat struct {
	ID    int    `json:"id"`
	Title string `json:"title"`
}

// ChatPhoto represents a chat photo.
type ChatPhoto struct {
	// SmallFileID is a file identifier of small (160x160) chat photo.
	// This file_id can be used only for photo download and
	// only for as long as the photo is not changed.
	SmallFileID string `json:"small_file_id"`
	// BigFileID is a file identifier of big (640x640) chat photo.
	// This file_id can be used only for photo download and
	// only for as long as the photo is not changed.
	BigFileID string `json:"big_file_id"`
}

// Chat contains information about the place a message was sent.
type Chat struct {
	// ID is a unique identifier for this chat
	ID int64 `json:"id"`
	// Type of chat, can be either “private”, “group”, “supergroup” or “channel”
	Type string `json:"type"`
	// Title for supergroups, channels and group chats
	//
	// optional
	Title string `json:"title"`
	// UserName for private chats, supergroups and channels if available
	//
	// optional
	UserName string `json:"username"`
	// FirstName of the other party in a private chat
	//
	// optional
	FirstName string `json:"first_name"`
	// LastName of the other party in a private chat
	//
	// optional
	LastName string `json:"last_name"`
	// AllMembersAreAdmins
	//
	// optional
	AllMembersAreAdmins bool `json:"all_members_are_administrators"`
	// Photo is a chat photo
	Photo *ChatPhoto `json:"photo"`
	// Description for groups, supergroups and channel chats
	//
	// optional
	Description string `json:"description,omitempty"`
	// InviteLink is a chat invite link, for groups, supergroups and channel chats.
	// Each administrator in a chat generates their own invite links,
	// so the bot must first generate the link using exportChatInviteLink
	//
	// optional
	InviteLink string `json:"invite_link,omitempty"`
	// PinnedMessage Pinned message, for groups, supergroups and channels
	//
	// optional
	PinnedMessage *Message `json:"pinned_message"`
}

// IsPrivate returns if the Chat is a private conversation.
func (c Chat) IsPrivate() bool {
	return c.Type == "private"
}

// IsGroup returns if the Chat is a group.
func (c Chat) IsGroup() bool {
	return c.Type == "group"
}

// IsSuperGroup returns if the Chat is a supergroup.
func (c Chat) IsSuperGroup() bool {
	return c.Type == "supergroup"
}

// IsChannel returns if the Chat is a channel.
func (c Chat) IsChannel() bool {
	return c.Type == "channel"
}

// ChatConfig returns a ChatConfig struct for chat related methods.
func (c Chat) ChatConfig() ChatConfig {
	return ChatConfig{ChatID: c.ID}
}

// Message is returned by almost every request, and contains data about
// almost anything.
type Message struct {
	// MessageID is a unique message identifier inside this chat
	MessageID int `json:"message_id"`
	// From is a sender, empty for messages sent to channels;
	//
	// optional
	From *User `json:"from"`
	// Date of the message was sent in Unix time
	Date int `json:"date"`
	// Chat is the conversation the message belongs to
	Chat *Chat `json:"chat"`
	// ForwardFrom for forwarded messages, sender of the original message;
	//
	// optional
	ForwardFrom *User `json:"forward_from"`
	// ForwardFromChat for messages forwarded from channels,
	// information about the original channel;
	//
	// optional
	ForwardFromChat *Chat `json:"forward_from_chat"`
	// ForwardFromMessageID for messages forwarded from channels,
	// identifier of the original message in the channel;
	//
	// optional
	ForwardFromMessageID int `json:"forward_from_message_id"`
	// ForwardDate for forwarded messages, date the original message was sent in Unix time;
	//
	// optional
	ForwardDate int `json:"forward_date"`
	// ReplyToMessage for replies, the original message.
	// Note that the Message object in this field will not contain further ReplyToMessage fields
	// even if it itself is a reply;
	//
	// optional
	ReplyToMessage *Message `json:"reply_to_message"`
	// ViaBot through which the message was sent;
	//
	// optional
	ViaBot *User `json:"via_bot"`
	// EditDate of the message was last edited in Unix time;
	//
	// optional
	EditDate int `json:"edit_date"`
	// MediaGroupID is the unique identifier of a media message group this message belongs to;
	//
	// optional
	MediaGroupID string `json:"media_group_id"`
	// AuthorSignature is the signature of the post author for messages in channels;
	//
	// optional
	AuthorSignature string `json:"author_signature"`
	// Text is for text messages, the actual UTF-8 text of the message, 0-4096 characters;
	//
	// optional
	Text string `json:"text"`
	// Entities is for text messages, special entities like usernames,
	// URLs, bot commands, etc. that appear in the text;
	//
	// optional
	Entities *[]MessageEntity `json:"entities"`
	// CaptionEntities;
	//
	// optional
	CaptionEntities *[]MessageEntity `json:"caption_entities"`
	// Audio message is an audio file, information about the file;
	//
	// optional
	Audio *Audio `json:"audio"`
	// Document message is a general file, information about the file;
	//
	// optional
	Document *Document `json:"document"`
	// Animation message is an animation, information about the animation.
	// For backward compatibility, when this field is set, the document field will also be set;
	//
	// optional
	Animation *ChatAnimation `json:"animation"`
	// Game message is a game, information about the game;
	//
	// optional
	Game *Game `json:"game"`
	// Photo message is a photo, available sizes of the photo;
	//
	// optional
	Photo *[]PhotoSize `json:"photo"`
	// Sticker message is a sticker, information about the sticker;
	//
	// optional
	Sticker *Sticker `json:"sticker"`
	// Video message is a video, information about the video;
	//
	// optional
	Video *Video `json:"video"`
	// VideoNote message is a video note, information about the video message;
	//
	// optional
	VideoNote *VideoNote `json:"video_note"`
	// Voice message is a voice message, information about the file;
	//
	// optional
	Voice *Voice `json:"voice"`
	// Caption for the animation, audio, document, photo, video or voice, 0-1024 characters;
	//
	// optional
	Caption string `json:"caption"`
	// Contact message is a shared contact, information about the contact;
	//
	// optional
	Contact *Contact `json:"contact"`
	// Location message is a shared location, information about the location;
	//
	// optional
	Location *Location `json:"location"`
	// Venue message is a venue, information about the venue.
	// For backward compatibility, when this field is set, the location field will also be set;
	//
	// optional
	Venue *Venue `json:"venue"`
	// NewChatMembers that were added to the group or supergroup
	// and information about them (the bot itself may be one of these members);
	//
	// optional
	NewChatMembers *[]User `json:"new_chat_members"`
	// LeftChatMember is a member was removed from the group,
	// information about them (this member may be the bot itself);
	//
	// optional
	LeftChatMember *User `json:"left_chat_member"`
	// NewChatTitle is a chat title was changed to this value;
	//
	// optional
	NewChatTitle string `json:"new_chat_title"`
	// NewChatPhoto is a chat photo was change to this value;
	//
	// optional
	NewChatPhoto *[]PhotoSize `json:"new_chat_photo"`
	// DeleteChatPhoto is a service message: the chat photo was deleted;
	//
	// optional
	DeleteChatPhoto bool `json:"delete_chat_photo"`
	// GroupChatCreated is a service message: the group has been created;
	//
	// optional
	GroupChatCreated bool `json:"group_chat_created"`
	// SuperGroupChatCreated is a service message: the supergroup has been created.
	// This field can't be received in a message coming through updates,
	// because bot can't be a member of a supergroup when it is created.
	// It can only be found in ReplyToMessage if someone replies to a very first message
	// in a directly created supergroup;
	//
	// optional
	SuperGroupChatCreated bool `json:"supergroup_chat_created"`
	// ChannelChatCreated is a service message: the channel has been created.
	// This field can't be received in a message coming through updates,
	// because bot can't be a member of a channel when it is created.
	// It can only be found in ReplyToMessage
	// if someone replies to a very first message in a channel;
	//
	// optional
	ChannelChatCreated bool `json:"channel_chat_created"`
	// MigrateToChatID is the group has been migrated to a supergroup with the specified identifier.
	// This number may be greater than 32 bits and some programming languages
	// may have difficulty/silent defects in interpreting it.
	// But it is smaller than 52 bits, so a signed 64 bit integer
	// or double-precision float type are safe for storing this identifier;
	//
	// optional
	MigrateToChatID int64 `json:"migrate_to_chat_id"`
	// MigrateFromChatID is the supergroup has been migrated from a group with the specified identifier.
	// This number may be greater than 32 bits and some programming languages
	// may have difficulty/silent defects in interpreting it.
	// But it is smaller than 52 bits, so a signed 64 bit integer
	// or double-precision float type are safe for storing this identifier;
	//
	// optional
	MigrateFromChatID int64 `json:"migrate_from_chat_id"`
	// PinnedMessage is a specified message was pinned.
	// Note that the Message object in this field will not contain further ReplyToMessage
	// fields even if it is itself a reply;
	//
	// optional
	PinnedMessage *Message `json:"pinned_message"`
	// Invoice message is an invoice for a payment;
	//
	// optional
	Invoice *Invoice `json:"invoice"`
	// SuccessfulPayment message is a service message about a successful payment,
	// information about the payment;
	//
	// optional
	SuccessfulPayment *SuccessfulPayment `json:"successful_payment"`
	// PassportData is a Telegram Passport data;
	//
	// optional
	PassportData *PassportData `json:"passport_data,omitempty"`
}

// Time converts the message timestamp into a Time.
func (m *Message) Time() time.Time {
	return time.Unix(int64(m.Date), 0)
}

// IsCommand returns true if message starts with a "bot_command" entity.
func (m *Message) IsCommand() bool {
	if m.Entities == nil || len(*m.Entities) == 0 {
		return false
	}

	entity := (*m.Entities)[0]
	return entity.Offset == 0 && entity.IsCommand()
}

// Command checks if the message was a command and if it was, returns the
// command. If the Message was not a command, it returns an empty string.
//
// If the command contains the at name syntax, it is removed. Use
// CommandWithAt() if you do not want that.
func (m *Message) Command() string {
	command := m.CommandWithAt()

	if i := strings.Index(command, "@"); i != -1 {
		command = command[:i]
	}

	return command
}

// CommandWithAt checks if the message was a command and if it was, returns the
// command. If the Message was not a command, it returns an empty string.
//
// If the command contains the at name syntax, it is not removed. Use Command()
// if you want that.
func (m *Message) CommandWithAt() string {
	if !m.IsCommand() {
		return ""
	}

	// IsCommand() checks that the message begins with a bot_command entity
	entity := (*m.Entities)[0]
	return m.Text[1:entity.Length]
}

// CommandArguments checks if the message was a command and if it was,
// returns all text after the command name. If the Message was not a
// command, it returns an empty string.
//
// Note: The first character after the command name is omitted:
// - "/foo bar baz" yields "bar baz", not " bar baz"
// - "/foo-bar baz" yields "bar baz", too
// Even though the latter is not a command conforming to the spec, the API
// marks "/foo" as command entity.
func (m *Message) CommandArguments() string {
	if !m.IsCommand() {
		return ""
	}

	// IsCommand() checks that the message begins with a bot_command entity
	entity := (*m.Entities)[0]
	if len(m.Text) == entity.Length {
		return "" // The command makes up the whole message
	}

	return m.Text[entity.Length+1:]
}

// MessageEntity contains information about data in a Message.
type MessageEntity struct {
	// Type of the entity.
	// Can be:
	//  “mention” (@username),
	//  “hashtag” (#hashtag),
	//  “cashtag” ($USD),
	//  “bot_command” (/start@jobs_bot),
	//  “url” (https://telegram.org),
	//  “email” (do-not-reply@telegram.org),
	//  “phone_number” (+1-212-555-0123),
	//  “bold” (bold text),
	//  “italic” (italic text),
	//  “underline” (underlined text),
	//  “strikethrough” (strikethrough text),
	//  “code” (monowidth string),
	//  “pre” (monowidth block),
	//  “text_link” (for clickable text URLs),
	//  “text_mention” (for users without usernames)
	Type string `json:"type"`
	// Offset in UTF-16 code units to the start of the entity
	Offset int `json:"offset"`
	// Length
	Length int `json:"length"`
	// URL for “text_link” only, url that will be opened after user taps on the text
	//
	// optional
	URL string `json:"url"`
	// User for “text_mention” only, the mentioned user
	//
	// optional
	User *User `json:"user"`
}

// ParseURL attempts to parse a URL contained within a MessageEntity.
func (e MessageEntity) ParseURL() (*url.URL, error) {
	if e.URL == "" {
		return nil, errors.New(ErrBadURL)
	}

	return url.Parse(e.URL)
}

// IsMention returns true if the type of the message entity is "mention" (@username).
func (e MessageEntity) IsMention() bool {
	return e.Type == "mention"
}

// IsHashtag returns true if the type of the message entity is "hashtag".
func (e MessageEntity) IsHashtag() bool {
	return e.Type == "hashtag"
}

// IsCommand returns true if the type of the message entity is "bot_command".
func (e MessageEntity) IsCommand() bool {
	return e.Type == "bot_command"
}

// IsUrl returns true if the type of the message entity is "url".
func (e MessageEntity) IsUrl() bool {
	return e.Type == "url"
}

// IsEmail returns true if the type of the message entity is "email".
func (e MessageEntity) IsEmail() bool {
	return e.Type == "email"
}

// IsBold returns true if the type of the message entity is "bold" (bold text).
func (e MessageEntity) IsBold() bool {
	return e.Type == "bold"
}

// IsItalic returns true if the type of the message entity is "italic" (italic text).
func (e MessageEntity) IsItalic() bool {
	return e.Type == "italic"
}

// IsCode returns true if the type of the message entity is "code" (monowidth string).
func (e MessageEntity) IsCode() bool {
	return e.Type == "code"
}

// IsPre returns true if the type of the message entity is "pre" (monowidth block).
func (e MessageEntity) IsPre() bool {
	return e.Type == "pre"
}

// IsTextLink returns true if the type of the message entity is "text_link" (clickable text URL).
func (e MessageEntity) IsTextLink() bool {
	return e.Type == "text_link"
}

// PhotoSize contains information about photos.
type PhotoSize struct {
	// FileID identifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// Width photo width
	Width int `json:"width"`
	// Height photo height
	Height int `json:"height"`
	// FileSize file size
	//
	// optional
	FileSize int `json:"file_size"`
}

// Audio contains information about audio.
type Audio struct {
	// FileID is an identifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// Duration of the audio in seconds as defined by sender
	Duration int `json:"duration"`
	// Performer of the audio as defined by sender or by audio tags
	//
	// optional
	Performer string `json:"performer"`
	// Title of the audio as defined by sender or by audio tags
	//
	// optional
	Title string `json:"title"`
	// MimeType of the file as defined by sender
	//
	// optional
	MimeType string `json:"mime_type"`
	// FileSize file size
	//
	// optional
	FileSize int `json:"file_size"`
}

// Document contains information about a document.
type Document struct {
	// FileID is a identifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// Thumbnail document thumbnail as defined by sender
	//
	// optional
	Thumbnail *PhotoSize `json:"thumb"`
	// FileName original filename as defined by sender
	//
	// optional
	FileName string `json:"file_name"`
	// MimeType  of the file as defined by sender
	//
	// optional
	MimeType string `json:"mime_type"`
	// FileSize file size
	//
	// optional
	FileSize int `json:"file_size"`
}

// Sticker contains information about a sticker.
type Sticker struct {
	// FileUniqueID is an unique identifier for this file,
	// which is supposed to be the same over time and for different bots.
	// Can't be used to download or reuse the file.
	FileUniqueID string `json:"file_unique_id"`
	// FileID is an identifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// Width sticker width
	Width int `json:"width"`
	// Height sticker height
	Height int `json:"height"`
	// Thumbnail sticker thumbnail in the .WEBP or .JPG format
	//
	// optional
	Thumbnail *PhotoSize `json:"thumb"`
	// Emoji associated with the sticker
	//
	// optional
	Emoji string `json:"emoji"`
	// FileSize
	//
	// optional
	FileSize int `json:"file_size"`
	// SetName of the sticker set to which the sticker belongs
	//
	// optional
	SetName string `json:"set_name"`
	// IsAnimated true, if the sticker is animated
	//
	// optional
	IsAnimated bool `json:"is_animated"`
}

// StickerSet contains information about an sticker set.
type StickerSet struct {
	// Name sticker set name
	Name string `json:"name"`
	// Title sticker set title
	Title string `json:"title"`
	// IsAnimated true, if the sticker set contains animated stickers
	IsAnimated bool `json:"is_animated"`
	// ContainsMasks true, if the sticker set contains masks
	ContainsMasks bool `json:"contains_masks"`
	// Stickers list of all set stickers
	Stickers []Sticker `json:"stickers"`
}

// ChatAnimation contains information about an animation.
type ChatAnimation struct {
	// FileID odentifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// Width video width as defined by sender
	Width int `json:"width"`
	// Height video height as defined by sender
	Height int `json:"height"`
	// Duration of the video in seconds as defined by sender
	Duration int `json:"duration"`
	// Thumbnail animation thumbnail as defined by sender
	//
	// optional
	Thumbnail *PhotoSize `json:"thumb"`
	// FileName original animation filename as defined by sender
	//
	// optional
	FileName string `json:"file_name"`
	// MimeType of the file as defined by sender
	//
	// optional
	MimeType string `json:"mime_type"`
	// FileSize file size
	//
	// optional
	FileSize int `json:"file_size"`
}

// Video contains information about a video.
type Video struct {
	// FileID identifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// Width video width as defined by sender
	Width int `json:"width"`
	// Height video height as defined by sender
	Height int `json:"height"`
	// Duration of the video in seconds as defined by sender
	Duration int `json:"duration"`
	// Thumbnail video thumbnail
	//
	// optional
	Thumbnail *PhotoSize `json:"thumb"`
	// MimeType of a file as defined by sender
	//
	// optional
	MimeType string `json:"mime_type"`
	// FileSize file size
	//
	// optional
	FileSize int `json:"file_size"`
}

// VideoNote contains information about a video.
type VideoNote struct {
	// FileID identifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// Length video width and height (diameter of the video message) as defined by sender
	Length int `json:"length"`
	// Duration of the video in seconds as defined by sender
	Duration int `json:"duration"`
	// Thumbnail video thumbnail
	//
	// optional
	Thumbnail *PhotoSize `json:"thumb"`
	// FileSize file size
	//
	// optional
	FileSize int `json:"file_size"`
}

// Voice contains information about a voice.
type Voice struct {
	// FileID identifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// Duration of the audio in seconds as defined by sender
	Duration int `json:"duration"`
	// MimeType of the file as defined by sender
	//
	// optional
	MimeType string `json:"mime_type"`
	// FileSize file size
	//
	// optional
	FileSize int `json:"file_size"`
}

// Contact contains information about a contact.
//
// Note that LastName and UserID may be empty.
type Contact struct {
	// PhoneNumber contact's phone number
	PhoneNumber string `json:"phone_number"`
	// FirstName contact's first name
	FirstName string `json:"first_name"`
	// LastName contact's last name
	//
	// optional
	LastName string `json:"last_name"`
	// UserID contact's user identifier in Telegram
	//
	// optional
	UserID int `json:"user_id"`
}

// Location contains information about a place.
type Location struct {
	// Longitude as defined by sender
	Longitude float64 `json:"longitude"`
	// Latitude as defined by sender
	Latitude float64 `json:"latitude"`
}

// Venue contains information about a venue, including its Location.
type Venue struct {
	// Location venue location
	Location Location `json:"location"`
	// Title name of the venue
	Title string `json:"title"`
	// Address of the venue
	Address string `json:"address"`
	// FoursquareID foursquare identifier of the venue
	//
	// optional
	FoursquareID string `json:"foursquare_id"`
}

// UserProfilePhotos contains a set of user profile photos.
type UserProfilePhotos struct {
	// TotalCount total number of profile pictures the target user has
	TotalCount int `json:"total_count"`
	// Photos requested profile pictures (in up to 4 sizes each)
	Photos [][]PhotoSize `json:"photos"`
}

// File contains information about a file to download from Telegram.
type File struct {
	// FileID identifier for this file, which can be used to download or reuse the file
	FileID string `json:"file_id"`
	// FileSize file size, if known
	//
	// optional
	FileSize int `json:"file_size"`
	// FilePath file path
	//
	// optional
	FilePath string `json:"file_path"`
}

// Link returns a full path to the download URL for a File.
//
// It requires the Bot Token to create the link.
func (f *File) Link(token string) string {
	return fmt.Sprintf(FileEndpoint, token, f.FilePath)
}

// ReplyKeyboardMarkup allows the Bot to set a custom keyboard.
type ReplyKeyboardMarkup struct {
	// Keyboard is an array of button rows, each represented by an Array of KeyboardButton objects
	Keyboard [][]KeyboardButton `json:"keyboard"`
	// ResizeKeyboard requests clients to resize the keyboard vertically for optimal fit
	// (e.g., make the keyboard smaller if there are just two rows of buttons).
	// Defaults to false, in which case the custom keyboard
	// is always of the same height as the app's standard keyboard.
	//
	// optional
	ResizeKeyboard bool `json:"resize_keyboard"`
	// OneTimeKeyboard requests clients to hide the keyboard as soon as it's been used.
	// The keyboard will still be available, but clients will automatically display
	// the usual letter-keyboard in the chat – the user can press a special button
	// in the input field to see the custom keyboard again.
	// Defaults to false.
	//
	// optional
	OneTimeKeyboard bool `json:"one_time_keyboard"`
	// Selective use this parameter if you want to show the keyboard to specific users only.
	// Targets:
	//  1) users that are @mentioned in the text of the Message object;
	//  2) if the bot's message is a reply (has Message.ReplyToMessage not nil), sender of the original message.
	//
	// Example: A user requests to change the bot's language,
	// bot replies to the request with a keyboard to select the new language.
	// Other users in the group don't see the keyboard.
	//
	// optional
	Selective bool `json:"selective"`
}

// KeyboardButton is a button within a custom keyboard.
type KeyboardButton struct {
	// Text of the button. If none of the optional fields are used,
	// it will be sent as a message when the button is pressed.
	Text string `json:"text"`
	// RequestContact if True, the user's phone number will be sent
	// as a contact when the button is pressed.
	// Available in private chats only.
	//
	// optional
	RequestContact bool `json:"request_contact"`
	// RequestLocation if True, the user's current location will be sent when the button is pressed.
	// Available in private chats only.
	//
	// optional
	RequestLocation bool `json:"request_location"`
}

// ReplyKeyboardHide allows the Bot to hide a custom keyboard.
type ReplyKeyboardHide struct {
	HideKeyboard bool `json:"hide_keyboard"`
	Selective    bool `json:"selective"` // optional
}

// ReplyKeyboardRemove allows the Bot to hide a custom keyboard.
type ReplyKeyboardRemove struct {
	// RemoveKeyboard requests clients to remove the custom keyboard
	// (user will not be able to summon this keyboard;
	// if you want to hide the keyboard from sight but keep it accessible,
	// use one_time_keyboard in ReplyKeyboardMarkup).
	RemoveKeyboard bool `json:"remove_keyboard"`
	// Selective use this parameter if you want to remove the keyboard for specific users only.
	// Targets:
	//  1) users that are @mentioned in the text of the Message object;
	//  2) if the bot's message is a reply (has Message.ReplyToMessage not nil), sender of the original message.
	//
	// Example: A user votes in a poll, bot returns confirmation message
	// in reply to the vote and removes the keyboard for that user,
	// while still showing the keyboard with poll options to users who haven't voted yet.
	//
	// optional
	Selective bool `json:"selective"`
}

// InlineKeyboardMarkup is a custom keyboard presented for an inline bot.
type InlineKeyboardMarkup struct {
	// InlineKeyboard array of button rows, each represented by an Array of InlineKeyboardButton objects
	InlineKeyboard [][]InlineKeyboardButton `json:"inline_keyboard"`
}

// InlineKeyboardButton is a button within a custom keyboard for
// inline query responses.
//
// Note that some values are references as even an empty string
// will change behavior.
//
// CallbackGame, if set, MUST be first button in first row.
type InlineKeyboardButton struct {
	// Text label text on the button
	Text string `json:"text"`
	// URL HTTP or tg:// url to be opened when button is pressed.
	//
	// optional
	URL *string `json:"url,omitempty"`
	// CallbackData data to be sent in a callback query to the bot when button is pressed, 1-64 bytes.
	//
	// optional
	CallbackData *string `json:"callback_data,omitempty"`
	// SwitchInlineQuery if set, pressing the button will prompt the user to select one of their chats,
	// open that chat and insert the bot's username and the specified inline query in the input field.
	// Can be empty, in which case just the bot's username will be inserted.
	//
	// This offers an easy way for users to start using your bot
	// in inline mode when they are currently in a private chat with it.
	// Especially useful when combined with switch_pm… actions – in this case
	// the user will be automatically returned to the chat they switched from,
	// skipping the chat selection screen.
	//
	// optional
	SwitchInlineQuery *string `json:"switch_inline_query,omitempty"`
	// SwitchInlineQueryCurrentChat if set, pressing the button will insert the bot's username
	// and the specified inline query in the current chat's input field.
	// Can be empty, in which case only the bot's username will be inserted.
	//
	// This offers a quick way for the user to open your bot in inline mode
	// in the same chat – good for selecting something from multiple options.
	//
	// optional
	SwitchInlineQueryCurrentChat *string `json:"switch_inline_query_current_chat,omitempty"`
	// CallbackGame description of the game that will be launched when the user presses the button.
	//
	// optional
	CallbackGame *CallbackGame `json:"callback_game,omitempty"`
	// Pay specify True, to send a Pay button.
	//
	// NOTE: This type of button must always be the first button in the first row.
	//
	// optional
	Pay bool `json:"pay,omitempty"`
}

// CallbackQuery is data sent when a keyboard button with callback data
// is clicked.
type CallbackQuery struct {
	// ID unique identifier for this query
	ID string `json:"id"`
	// From sender
	From *User `json:"from"`
	// Message with the callback button that originated the query.
	// Note that message content and message date will not be available if the message is too old.
	//
	// optional
	Message *Message `json:"message"`
	// InlineMessageID identifier of the message sent via the bot in inline mode, that originated the query.
	//
	// optional
	//
	InlineMessageID string `json:"inline_message_id"`
	// ChatInstance global identifier, uniquely corresponding to the chat to which
	// the message with the callback button was sent. Useful for high scores in games.
	//
	ChatInstance string `json:"chat_instance"`
	// Data associated with the callback button. Be aware that
	// a bad client can send arbitrary data in this field.
	//
	// optional
	Data string `json:"data"`
	// GameShortName short name of a Game to be returned, serves as the unique identifier for the game.
	//
	// optional
	GameShortName string `json:"game_short_name"`
}

// ForceReply allows the Bot to have users directly reply to it without
// additional interaction.
type ForceReply struct {
	// ForceReply shows reply interface to the user,
	// as if they manually selected the bot's message and tapped 'Reply'.
	ForceReply bool `json:"force_reply"`
	// Selective use this parameter if you want to force reply from specific users only.
	// Targets:
	//  1) users that are @mentioned in the text of the Message object;
	//  2) if the bot's message is a reply (has Message.ReplyToMessage not nil), sender of the original message.
	//
	// optional
	Selective bool `json:"selective"`
}

// ChatMember is information about a member in a chat.
type ChatMember struct {
	// User information about the user
	User *User `json:"user"`
	// Status the member's status in the chat.
	// Can be
	//  “creator”,
	//  “administrator”,
	//  “member”,
	//  “restricted”,
	//  “left” or
	//  “kicked”
	Status string `json:"status"`
	// CustomTitle owner and administrators only. Custom title for this user
	//
	// optional
	CustomTitle string `json:"custom_title,omitempty"`
	// UntilDate restricted and kicked only.
	// Date when restrictions will be lifted for this user;
	// unix time.
	//
	// optional
	UntilDate int64 `json:"until_date,omitempty"`
	// CanBeEdited administrators only.
	// True, if the bot is allowed to edit administrator privileges of that user.
	//
	// optional
	CanBeEdited bool `json:"can_be_edited,omitempty"`
	// CanChangeInfo administrators and restricted only.
	// True, if the user is allowed to change the chat title, photo and other settings.
	//
	// optional
	CanChangeInfo bool `json:"can_change_info,omitempty"`
	// CanChangeInfo administrators only.
	// True, if the administrator can post in the channel;
	// channels only.
	//
	// optional
	CanPostMessages bool `json:"can_post_messages,omitempty"`
	// CanEditMessages administrators only.
	// True, if the administrator can edit messages of other users and can pin messages;
	// channels only.
	//
	// optional
	CanEditMessages bool `json:"can_edit_messages,omitempty"`
	// CanDeleteMessages administrators only.
	// True, if the administrator can delete messages of other users.
	//
	// optional
	CanDeleteMessages bool `json:"can_delete_messages,omitempty"`
	// CanInviteUsers administrators and restricted only.
	// True, if the user is allowed to invite new users to the chat.
	//
	// optional
	CanInviteUsers bool `json:"can_invite_users,omitempty"`
	// CanRestrictMembers administrators only.
	// True, if the administrator can restrict, ban or unban chat members.
	//
	// optional
	CanRestrictMembers bool `json:"can_restrict_members,omitempty"`
	// CanPinMessages
	//
	// optional
	CanPinMessages bool `json:"can_pin_messages,omitempty"`
	// CanPromoteMembers administrators only.
	// True, if the administrator can add new administrators
	// with a subset of their own privileges or demote administrators that he has promoted,
	// directly or indirectly (promoted by administrators that were appointed by the user).
	//
	// optional
	CanPromoteMembers bool `json:"can_promote_members,omitempty"`
	// CanSendMessages
	//
	// optional
	CanSendMessages bool `json:"can_send_messages,omitempty"`
	// CanSendMediaMessages restricted only.
	// True, if the user is allowed to send text messages, contacts, locations and venues
	//
	// optional
	CanSendMediaMessages bool `json:"can_send_media_messages,omitempty"`
	// CanSendOtherMessages restricted only.
	// True, if the user is allowed to send audios, documents,
	// photos, videos, video notes and voice notes.
	//
	// optional
	CanSendOtherMessages bool `json:"can_send_other_messages,omitempty"`
	// CanAddWebPagePreviews restricted only.
	// True, if the user is allowed to add web page previews to their messages.
	//
	// optional
	CanAddWebPagePreviews bool `json:"can_add_web_page_previews,omitempty"`
}

// IsCreator returns if the ChatMember was the creator of the chat.
func (chat ChatMember) IsCreator() bool { return chat.Status == "creator" }

// IsAdministrator returns if the ChatMember is a chat administrator.
func (chat ChatMember) IsAdministrator() bool { return chat.Status == "administrator" }

// IsMember returns if the ChatMember is a current member of the chat.
func (chat ChatMember) IsMember() bool { return chat.Status == "member" }

// HasLeft returns if the ChatMember left the chat.
func (chat ChatMember) HasLeft() bool { return chat.Status == "left" }

// WasKicked returns if the ChatMember was kicked from the chat.
func (chat ChatMember) WasKicked() bool { return chat.Status == "kicked" }

// Game is a game within Telegram.
type Game struct {
	// Title of the game
	Title string `json:"title"`
	// Description of the game
	Description string `json:"description"`
	// Photo that will be displayed in the game message in chats.
	Photo []PhotoSize `json:"photo"`
	// Text a brief description of the game or high scores included in the game message.
	// Can be automatically edited to include current high scores for the game
	// when the bot calls setGameScore, or manually edited using editMessageText. 0-4096 characters.
	//
	// optional
	Text string `json:"text"`
	// TextEntities special entities that appear in text, such as usernames, URLs, bot commands, etc.
	//
	// optional
	TextEntities []MessageEntity `json:"text_entities"`
	// Animation animation that will be displayed in the game message in chats.
	// Upload via BotFather (https://t.me/botfather).
	//
	// optional
	Animation Animation `json:"animation"`
}

// Animation is a GIF animation demonstrating the game.
type Animation struct {
	// FileID identifier for this file, which can be used to download or reuse the file.
	FileID string `json:"file_id"`
	// Thumb animation thumbnail as defined by sender.
	//
	// optional
	Thumb PhotoSize `json:"thumb"`
	// FileName original animation filename as defined by sender.
	//
	// optional
	FileName string `json:"file_name"`
	// MimeType of the file as defined by sender.
	//
	// optional
	MimeType string `json:"mime_type"`
	// FileSize ile size
	//
	// optional
	FileSize int `json:"file_size"`
}

// GameHighScore is a user's score and position on the leaderboard.
type GameHighScore struct {
	// Position in high score table for the game
	Position int `json:"position"`
	// User user
	User User `json:"user"`
	// Score score
	Score int `json:"score"`
}

// CallbackGame is for starting a game in an inline keyboard button.
type CallbackGame struct{}

// WebhookInfo is information about a currently set webhook.
type WebhookInfo struct {
	// URL webhook URL, may be empty if webhook is not set up.
	URL string `json:"url"`
	// HasCustomCertificate true, if a custom certificate was provided for webhook certificate checks.
	HasCustomCertificate bool `json:"has_custom_certificate"`
	// PendingUpdateCount number of updates awaiting delivery.
	PendingUpdateCount int `json:"pending_update_count"`
	// LastErrorDate unix time for the most recent error
	// that happened when trying to deliver an update via webhook.
	//
	// optional
	LastErrorDate int `json:"last_error_date"`
	// LastErrorMessage error message in human-readable format for the most recent error
	// that happened when trying to deliver an update via webhook.
	//
	// optional
	LastErrorMessage string `json:"last_error_message"`
	// MaxConnections maximum allowed number of simultaneous
	// HTTPS connections to the webhook for update delivery.
	//
	// optional
	MaxConnections int `json:"max_connections"`
}

// IsSet returns true if a webhook is currently set.
func (info WebhookInfo) IsSet() bool {
	return info.URL != ""
}

// InputMediaPhoto contains a photo for displaying as part of a media group.
type InputMediaPhoto struct {
	// Type of the result, must be photo.
	Type string `json:"type"`
	// Media file to send. Pass a file_id to send a file that
	// exists on the Telegram servers (recommended),
	// pass an HTTP URL for Telegram to get a file from the Internet,
	// or pass “attach://<file_attach_name>” to upload a new one
	// using multipart/form-data under <file_attach_name> name.
	Media string `json:"media"`
	// Caption of the photo to be sent, 0-1024 characters after entities parsing.
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the photo caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
}

// InputMediaVideo contains a video for displaying as part of a media group.
type InputMediaVideo struct {
	// Type of the result, must be video.
	Type string `json:"type"`
	// Media file to send. Pass a file_id to send a file
	// that exists on the Telegram servers (recommended),
	// pass an HTTP URL for Telegram to get a file from the Internet,
	// or pass “attach://<file_attach_name>” to upload a new one
	// using multipart/form-data under <file_attach_name> name.
	Media string `json:"media"`
	// thumb intentionally missing as it is not currently compatible

	// Caption of the video to be sent, 0-1024 characters after entities parsing.
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the video caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// Width video width
	//
	// optional
	Width int `json:"width"`
	// Height video height
	//
	// optional
	Height int `json:"height"`
	// Duration video duration
	//
	// optional
	Duration int `json:"duration"`
	// SupportsStreaming pass True, if the uploaded video is suitable for streaming.
	//
	// optional
	SupportsStreaming bool `json:"supports_streaming"`
}

// InlineQuery is a Query from Telegram for an inline request.
type InlineQuery struct {
	// ID unique identifier for this query
	ID string `json:"id"`
	// From sender
	From *User `json:"from"`
	// Location sender location, only for bots that request user location.
	//
	// optional
	Location *Location `json:"location"`
	// Query text of the query (up to 256 characters).
	Query string `json:"query"`
	// Offset of the results to be returned, can be controlled by the bot.
	Offset string `json:"offset"`
}

// InlineQueryResultArticle is an inline query response article.
type InlineQueryResultArticle struct {
	// Type of the result, must be article.
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 Bytes.
	//
	// required
	ID string `json:"id"`
	// Title of the result
	//
	// required
	Title string `json:"title"`
	// InputMessageContent content of the message to be sent.
	//
	// required
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
	// ReplyMarkup Inline keyboard attached to the message.
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// URL of the result.
	//
	// optional
	URL string `json:"url"`
	// HideURL pass True, if you don't want the URL to be shown in the message.
	//
	// optional
	HideURL bool `json:"hide_url"`
	// Description short description of the result.
	//
	// optional
	Description string `json:"description"`
	// ThumbURL url of the thumbnail for the result
	//
	// optional
	ThumbURL string `json:"thumb_url"`
	// ThumbWidth thumbnail width
	//
	// optional
	ThumbWidth int `json:"thumb_width"`
	// ThumbHeight thumbnail height
	//
	// optional
	ThumbHeight int `json:"thumb_height"`
}

// InlineQueryResultPhoto is an inline query response photo.
type InlineQueryResultPhoto struct {
	// Type of the result, must be article.
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 Bytes.
	//
	// required
	ID string `json:"id"`
	// URL a valid URL of the photo. Photo must be in jpeg format.
	// Photo size must not exceed 5MB.
	URL string `json:"photo_url"`
	// MimeType
	MimeType string `json:"mime_type"`
	// Width of the photo
	//
	// optional
	Width int `json:"photo_width"`
	// Height of the photo
	//
	// optional
	Height int `json:"photo_height"`
	// ThumbURL url of the thumbnail for the photo.
	//
	// optional
	ThumbURL string `json:"thumb_url"`
	// Title for the result
	//
	// optional
	Title string `json:"title"`
	// Description short description of the result
	//
	// optional
	Description string `json:"description"`
	// Caption of the photo to be sent, 0-1024 characters after entities parsing.
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the photo caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message.
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the photo.
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultCachedPhoto is an inline query response with cached photo.
type InlineQueryResultCachedPhoto struct {
	// Type of the result, must be photo.
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes.
	//
	// required
	ID string `json:"id"`
	// PhotoID a valid file identifier of the photo.
	//
	// required
	PhotoID string `json:"photo_file_id"`
	// Title for the result.
	//
	// optional
	Title string `json:"title"`
	// Description short description of the result.
	//
	// optional
	Description string `json:"description"`
	// Caption of the photo to be sent, 0-1024 characters after entities parsing.
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the photo caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message.
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the photo.
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultGIF is an inline query response GIF.
type InlineQueryResultGIF struct {
	// Type of the result, must be gif.
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes.
	//
	// required
	ID string `json:"id"`
	// URL a valid URL for the GIF file. File size must not exceed 1MB.
	//
	// required
	URL string `json:"gif_url"`
	// ThumbURL url of the static (JPEG or GIF) or animated (MPEG4) thumbnail for the result.
	//
	// required
	ThumbURL string `json:"thumb_url"`
	// Width of the GIF
	//
	// optional
	Width int `json:"gif_width,omitempty"`
	// Height of the GIF
	//
	// optional
	Height int `json:"gif_height,omitempty"`
	// Duration of the GIF
	//
	// optional
	Duration int `json:"gif_duration,omitempty"`
	// Title for the result
	//
	// optional
	Title string `json:"title,omitempty"`
	// Caption of the GIF file to be sent, 0-1024 characters after entities parsing.
	//
	// optional
	Caption string `json:"caption,omitempty"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the GIF animation.
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultCachedGIF is an inline query response with cached gif.
type InlineQueryResultCachedGIF struct {
	// Type of the result, must be gif.
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes.
	//
	// required
	ID string `json:"id"`
	// GifID a valid file identifier for the GIF file.
	//
	// required
	GifID string `json:"gif_file_id"`
	// Title for the result
	//
	// optional
	Title string `json:"title"`
	// Caption of the GIF file to be sent, 0-1024 characters after entities parsing.
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message.
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the GIF animation.
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultMPEG4GIF is an inline query response MPEG4 GIF.
type InlineQueryResultMPEG4GIF struct {
	// Type of the result, must be mpeg4_gif
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// URL a valid URL for the MP4 file. File size must not exceed 1MB
	//
	// required
	URL string `json:"mpeg4_url"`
	// Width video width
	//
	// optional
	Width int `json:"mpeg4_width"`
	// Height vVideo height
	//
	// optional
	Height int `json:"mpeg4_height"`
	// Duration video duration
	//
	// optional
	Duration int `json:"mpeg4_duration"`
	// ThumbURL url of the static (JPEG or GIF) or animated (MPEG4) thumbnail for the result.
	ThumbURL string `json:"thumb_url"`
	// Title for the result
	//
	// optional
	Title string `json:"title"`
	// Caption of the MPEG-4 file to be sent, 0-1024 characters after entities parsing.
	//
	// optional
	Caption string `json:"caption"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the video animation
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultCachedMpeg4Gif is an inline query response with cached
// H.264/MPEG-4 AVC video without sound gif.
type InlineQueryResultCachedMpeg4Gif struct {
	// Type of the result, must be mpeg4_gif
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// MGifID a valid file identifier for the MP4 file
	//
	// required
	MGifID string `json:"mpeg4_file_id"`
	// Title for the result
	//
	// optional
	Title string `json:"title"`
	// Caption of the MPEG-4 file to be sent, 0-1024 characters after entities parsing.
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message.
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the video animation.
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultVideo is an inline query response video.
type InlineQueryResultVideo struct {
	// Type of the result, must be video
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// URL a valid url for the embedded video player or video file
	//
	// required
	URL string `json:"video_url"`
	// MimeType of the content of video url, “text/html” or “video/mp4”
	//
	// required
	MimeType string `json:"mime_type"`
	//
	// ThumbURL url of the thumbnail (jpeg only) for the video
	// optional
	ThumbURL string `json:"thumb_url"`
	// Title for the result
	//
	// required
	Title string `json:"title"`
	// Caption of the video to be sent, 0-1024 characters after entities parsing
	//
	// optional
	Caption string `json:"caption"`
	// Width video width
	//
	// optional
	Width int `json:"video_width"`
	// Height video height
	//
	// optional
	Height int `json:"video_height"`
	// Duration video duration in seconds
	//
	// optional
	Duration int `json:"video_duration"`
	// Description short description of the result
	//
	// optional
	Description string `json:"description"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the video.
	// This field is required if InlineQueryResultVideo is used to send
	// an HTML-page as a result (e.g., a YouTube video).
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultCachedVideo is an inline query response with cached video.
type InlineQueryResultCachedVideo struct {
	// Type of the result, must be video
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// VideoID a valid file identifier for the video file
	//
	// required
	VideoID string `json:"video_file_id"`
	// Title for the result
	//
	// required
	Title string `json:"title"`
	// Description short description of the result
	//
	// optional
	Description string `json:"description"`
	// Caption of the video to be sent, 0-1024 characters after entities parsing
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the video caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the video
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultCachedSticker is an inline query response with cached sticker.
type InlineQueryResultCachedSticker struct {
	// Type of the result, must be sticker
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// StickerID a valid file identifier of the sticker
	//
	// required
	StickerID string `json:"sticker_file_id"`
	// Title is a title
	Title string `json:"title"`
	// ParseMode mode for parsing entities in the video caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the sticker
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultAudio is an inline query response audio.
type InlineQueryResultAudio struct {
	// Type of the result, must be audio
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// URL a valid url for the audio file
	//
	// required
	URL string `json:"audio_url"`
	// Title is a title
	//
	// required
	Title string `json:"title"`
	// Caption 0-1024 characters after entities parsing
	//
	// optional
	Caption string `json:"caption"`
	// Performer is a performer
	//
	// optional
	Performer string `json:"performer"`
	// Duration audio duration in seconds
	//
	// optional
	Duration int `json:"audio_duration"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the audio
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultCachedAudio is an inline query response with cached audio.
type InlineQueryResultCachedAudio struct {
	// Type of the result, must be audio
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// AudioID a valid file identifier for the audio file
	//
	// required
	AudioID string `json:"audio_file_id"`
	// Caption 0-1024 characters after entities parsing
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the video caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the audio
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultVoice is an inline query response voice.
type InlineQueryResultVoice struct {
	// Type of the result, must be voice
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// URL a valid URL for the voice recording
	//
	// required
	URL string `json:"voice_url"`
	// Title recording title
	//
	// required
	Title string `json:"title"`
	// Caption 0-1024 characters after entities parsing
	//
	// optional
	Caption string `json:"caption"`
	// Duration recording duration in seconds
	//
	// optional
	Duration int `json:"voice_duration"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the voice recording
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultCachedVoice is an inline query response with cached voice.
type InlineQueryResultCachedVoice struct {
	// Type of the result, must be voice
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// VoiceID a valid file identifier for the voice message
	//
	// required
	VoiceID string `json:"voice_file_id"`
	// Title voice message title
	//
	// required
	Title string `json:"title"`
	// Caption 0-1024 characters after entities parsing
	//
	// optional
	Caption string `json:"caption"`
	// ParseMode mode for parsing entities in the video caption.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the voice message
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultDocument is an inline query response document.
type InlineQueryResultDocument struct {
	// Type of the result, must be document
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// Title for the result
	//
	// required
	Title string `json:"title"`
	// Caption of the document to be sent, 0-1024 characters after entities parsing
	//
	// optional
	Caption string `json:"caption"`
	// URL a valid url for the file
	//
	// required
	URL string `json:"document_url"`
	// MimeType of the content of the file, either “application/pdf” or “application/zip”
	//
	// required
	MimeType string `json:"mime_type"`
	// Description short description of the result
	//
	// optional
	Description string `json:"description"`
	// ReplyMarkup nline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the file
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
	// ThumbURL url of the thumbnail (jpeg only) for the file
	//
	// optional
	ThumbURL string `json:"thumb_url"`
	// ThumbWidth thumbnail width
	//
	// optional
	ThumbWidth int `json:"thumb_width"`
	// ThumbHeight thumbnail height
	//
	// optional
	ThumbHeight int `json:"thumb_height"`
}

// InlineQueryResultCachedDocument is an inline query response with cached document.
type InlineQueryResultCachedDocument struct {
	// Type of the result, must be document
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// DocumentID a valid file identifier for the file
	//
	// required
	DocumentID string `json:"document_file_id"`
	// Title for the result
	//
	// optional
	Title string `json:"title"` // required
	// Caption of the document to be sent, 0-1024 characters after entities parsing
	//
	// optional
	Caption string `json:"caption"`
	// Description short description of the result
	//
	// optional
	Description string `json:"description"`
	// ParseMode mode for parsing entities in the video caption.
	//	// See formatting options for more details
	//	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the file
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
}

// InlineQueryResultLocation is an inline query response location.
type InlineQueryResultLocation struct {
	// Type of the result, must be location
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 Bytes
	//
	// required
	ID string `json:"id"`
	// Latitude  of the location in degrees
	//
	// required
	Latitude float64 `json:"latitude"`
	// Longitude of the location in degrees
	//
	// required
	Longitude float64 `json:"longitude"`
	// Title of the location
	//
	// required
	Title string `json:"title"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the location
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
	// ThumbURL url of the thumbnail for the result
	//
	// optional
	ThumbURL string `json:"thumb_url"`
	// ThumbWidth thumbnail width
	//
	// optional
	ThumbWidth int `json:"thumb_width"`
	// ThumbHeight thumbnail height
	//
	// optional
	ThumbHeight int `json:"thumb_height"`
}

// InlineQueryResultVenue is an inline query response venue.
type InlineQueryResultVenue struct {
	// Type of the result, must be venue
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 Bytes
	//
	// required
	ID string `json:"id"`
	// Latitude of the venue location in degrees
	//
	// required
	Latitude float64 `json:"latitude"`
	// Longitude of the venue location in degrees
	//
	// required
	Longitude float64 `json:"longitude"`
	// Title of the venue
	//
	// required
	Title string `json:"title"`
	// Address of the venue
	//
	// required
	Address string `json:"address"`
	// FoursquareID foursquare identifier of the venue if known
	//
	// optional
	FoursquareID string `json:"foursquare_id"`
	// FoursquareType foursquare type of the venue, if known.
	// (For example, “arts_entertainment/default”, “arts_entertainment/aquarium” or “food/icecream”.)
	//
	// optional
	FoursquareType string `json:"foursquare_type"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
	// InputMessageContent content of the message to be sent instead of the venue
	//
	// optional
	InputMessageContent interface{} `json:"input_message_content,omitempty"`
	// ThumbURL url of the thumbnail for the result
	//
	// optional
	ThumbURL string `json:"thumb_url"`
	// ThumbWidth thumbnail width
	//
	// optional
	ThumbWidth int `json:"thumb_width"`
	// ThumbHeight thumbnail height
	//
	// optional
	ThumbHeight int `json:"thumb_height"`
}

// InlineQueryResultGame is an inline query response game.
type InlineQueryResultGame struct {
	// Type of the result, must be game
	//
	// required
	Type string `json:"type"`
	// ID unique identifier for this result, 1-64 bytes
	//
	// required
	ID string `json:"id"`
	// GameShortName short name of the game
	//
	// required
	GameShortName string `json:"game_short_name"`
	// ReplyMarkup inline keyboard attached to the message
	//
	// optional
	ReplyMarkup *InlineKeyboardMarkup `json:"reply_markup,omitempty"`
}

// ChosenInlineResult is an inline query result chosen by a User
type ChosenInlineResult struct {
	// ResultID the unique identifier for the result that was chosen
	ResultID string `json:"result_id"`
	// From the user that chose the result
	From *User `json:"from"`
	// Location sender location, only for bots that require user location
	//
	// optional
	Location *Location `json:"location"`
	// InlineMessageID identifier of the sent inline message.
	// Available only if there is an inline keyboard attached to the message.
	// Will be also received in callback queries and can be used to edit the message.
	//
	// optional
	InlineMessageID string `json:"inline_message_id"`
	// Query the query that was used to obtain the result
	Query string `json:"query"`
}

// InputTextMessageContent contains text for displaying
// as an inline query result.
type InputTextMessageContent struct {
	// Text of the message to be sent, 1-4096 characters
	Text string `json:"message_text"`
	// ParseMode mode for parsing entities in the message text.
	// See formatting options for more details
	// (https://core.telegram.org/bots/api#formatting-options).
	//
	// optional
	ParseMode string `json:"parse_mode"`
	// DisableWebPagePreview disables link previews for links in the sent message
	//
	// optional
	DisableWebPagePreview bool `json:"disable_web_page_preview"`
}

// InputLocationMessageContent contains a location for displaying
// as an inline query result.
type InputLocationMessageContent struct {
	// Latitude of the location in degrees
	Latitude float64 `json:"latitude"`
	// Longitude of the location in degrees
	Longitude float64 `json:"longitude"`
}

// InputVenueMessageContent contains a venue for displaying
// as an inline query result.
type InputVenueMessageContent struct {
	// Latitude of the venue in degrees
	Latitude float64 `json:"latitude"`
	// Longitude of the venue in degrees
	Longitude float64 `json:"longitude"`
	// Title name of the venue
	Title string `json:"title"`
	// Address of the venue
	Address string `json:"address"`
	// FoursquareID foursquare identifier of the venue, if known
	//
	// optional
	FoursquareID string `json:"foursquare_id"`
}

// InputContactMessageContent contains a contact for displaying
// as an inline query result.
type InputContactMessageContent struct {
	// 	PhoneNumber contact's phone number
	PhoneNumber string `json:"phone_number"`
	// FirstName contact's first name
	FirstName string `json:"first_name"`
	// LastName contact's last name
	//
	// optional
	LastName string `json:"last_name"`
}

// Invoice contains basic information about an invoice.
type Invoice struct {
	// Title product name
	Title string `json:"title"`
	// Description product description
	Description string `json:"description"`
	// StartParameter unique bot deep-linking parameter that can be used to generate this invoice
	StartParameter string `json:"start_parameter"`
	// Currency three-letter ISO 4217 currency code
	// (see https://core.telegram.org/bots/payments#supported-currencies)
	Currency string `json:"currency"`
	// TotalAmount total price in the smallest units of the currency (integer, not float/double).
	// For example, for a price of US$ 1.45 pass amount = 145.
	// See the exp parameter in currencies.json
	// (https://core.telegram.org/bots/payments/currencies.json),
	// it shows the number of digits past the decimal point
	// for each currency (2 for the majority of currencies).
	TotalAmount int `json:"total_amount"`
}

// LabeledPrice represents a portion of the price for goods or services.
type LabeledPrice struct {
	// Label portion label
	Label string `json:"label"`
	// Amount price of the product in the smallest units of the currency (integer, not float/double).
	// For example, for a price of US$ 1.45 pass amount = 145.
	// See the exp parameter in currencies.json
	// (https://core.telegram.org/bots/payments/currencies.json),
	// it shows the number of digits past the decimal point
	// for each currency (2 for the majority of currencies).
	Amount int `json:"amount"`
}

// ShippingAddress represents a shipping address.
type ShippingAddress struct {
	// CountryCode ISO 3166-1 alpha-2 country code
	CountryCode string `json:"country_code"`
	// State if applicable
	State string `json:"state"`
	// City city
	City string `json:"city"`
	// StreetLine1 first line for the address
	StreetLine1 string `json:"street_line1"`
	// StreetLine2 second line for the address
	StreetLine2 string `json:"street_line2"`
	// PostCode address post code
	PostCode string `json:"post_code"`
}

// OrderInfo represents information about an order.
type OrderInfo struct {
	// Name user name
	//
	// optional
	Name string `json:"name,omitempty"`
	// PhoneNumber user's phone number
	//
	// optional
	PhoneNumber string `json:"phone_number,omitempty"`
	// Email user email
	//
	// optional
	Email string `json:"email,omitempty"`
	// ShippingAddress user shipping address
	//
	// optional
	ShippingAddress *ShippingAddress `json:"shipping_address,omitempty"`
}

// ShippingOption represents one shipping option.
type ShippingOption struct {
	// ID shipping option identifier
	ID string `json:"id"`
	// Title option title
	Title string `json:"title"`
	// Prices list of price portions
	Prices *[]LabeledPrice `json:"prices"`
}

// SuccessfulPayment contains basic information about a successful payment.
type SuccessfulPayment struct {
	// Currency three-letter ISO 4217 currency code
	// (see https://core.telegram.org/bots/payments#supported-currencies)
	Currency string `json:"currency"`
	// TotalAmount total price in the smallest units of the currency (integer, not float/double).
	// For example, for a price of US$ 1.45 pass amount = 145.
	// See the exp parameter in currencies.json,
	// (https://core.telegram.org/bots/payments/currencies.json)
	// it shows the number of digits past the decimal point
	// for each currency (2 for the majority of currencies).
	TotalAmount int `json:"total_amount"`
	// InvoicePayload bot specified invoice payload
	InvoicePayload string `json:"invoice_payload"`
	// ShippingOptionID identifier of the shipping option chosen by the user
	//
	// optional
	ShippingOptionID string `json:"shipping_option_id,omitempty"`
	// OrderInfo order info provided by the user
	//
	// optional
	OrderInfo *OrderInfo `json:"order_info,omitempty"`
	// TelegramPaymentChargeID telegram payment identifier
	TelegramPaymentChargeID string `json:"telegram_payment_charge_id"`
	// ProviderPaymentChargeID provider payment identifier
	ProviderPaymentChargeID string `json:"provider_payment_charge_id"`
}

// ShippingQuery contains information about an incoming shipping query.
type ShippingQuery struct {
	// ID unique query identifier
	ID string `json:"id"`
	// From user who sent the query
	From *User `json:"from"`
	// InvoicePayload bot specified invoice payload
	InvoicePayload string `json:"invoice_payload"`
	// ShippingAddress user specified shipping address
	ShippingAddress *ShippingAddress `json:"shipping_address"`
}

// PreCheckoutQuery contains information about an incoming pre-checkout query.
type PreCheckoutQuery struct {
	// ID unique query identifier
	ID string `json:"id"`
	// From user who sent the query
	From *User `json:"from"`
	// Currency three-letter ISO 4217 currency code
	//	// (see https://core.telegram.org/bots/payments#supported-currencies)
	Currency string `json:"currency"`
	// TotalAmount total price in the smallest units of the currency (integer, not float/double).
	//	// For example, for a price of US$ 1.45 pass amount = 145.
	//	// See the exp parameter in currencies.json,
	//	// (https://core.telegram.org/bots/payments/currencies.json)
	//	// it shows the number of digits past the decimal point
	//	// for each currency (2 for the majority of currencies).
	TotalAmount int `json:"total_amount"`
	// InvoicePayload bot specified invoice payload
	InvoicePayload string `json:"invoice_payload"`
	// ShippingOptionID identifier of the shipping option chosen by the user
	//
	// optional
	ShippingOptionID string `json:"shipping_option_id,omitempty"`
	// OrderInfo order info provided by the user
	//
	// optional
	OrderInfo *OrderInfo `json:"order_info,omitempty"`
}

// Error is an error containing extra information returned by the Telegram API.
type Error struct {
	Code    int
	Message string
	ResponseParameters
}

func (e Error) Error() string {
	return e.Message
}

// BotCommand represents a bot command.
type BotCommand struct {
	// Command text of the command, 1-32 characters.
	// Can contain only lowercase English letters, digits and underscores.
	Command string `json:"command"`
	// Description of the command, 3-256 characters.
	Description string `json:"description"`
}