package tg

// BrokerUpdateType distinguishes update types coming from the broker
type BrokerUpdateType string

const (
	// BMessage is a message update (mostly webhook updates)
	BMessage BrokerUpdateType = "message"

	// BFile is a file retrieval response update
	BFile BrokerUpdateType = "file"

	// BError is an error the broker occurred while fulfilling a request
	BError BrokerUpdateType = "error"
)

// BrokerUpdate is what is sent by the broker as update
type BrokerUpdate struct {
	Type     BrokerUpdateType
	Callback *int        `json:",omitempty"`
	Error    *string     `json:",omitempty"`
	Message  *APIMessage `json:",omitempty"`
	Bytes    *string     `json:",omitempty"`
}

// ClientCommandType distinguishes requests sent by clients to the broker
type ClientCommandType string

const (
	// CmdSendTextMessage requests the broker to send a text message to a chat
	CmdSendTextMessage ClientCommandType = "sendText"

	// CmdSendPhoto requests the broker to send a photo to a chat
	CmdSendPhoto ClientCommandType = "sendPhoto"

	// CmdGetFile requests the broker to get a file from Telegram
	CmdGetFile ClientCommandType = "getFile"
)

// ClientTextMessageData is the required data for a CmdSendTextMessage request
type ClientTextMessageData struct {
	ChatID  int64
	Text    string
	ReplyID *int64 `json:",omitempty"`
}

// ClientPhotoData is the required data for a CmdSendPhoto request
type ClientPhotoData struct {
	ChatID   int64
	Bytes    string
	Filename string
	Caption  string `json:",omitempty"`
	ReplyID  *int64 `json:",omitempty"`
}

// FileRequestData is the required data for a CmdGetFile request
type FileRequestData struct {
	FileID string
}

// ClientCommand is a request sent by clients to the broker
type ClientCommand struct {
	Type            ClientCommandType
	TextMessageData *ClientTextMessageData `json:",omitempty"`
	PhotoData       *ClientPhotoData       `json:",omitempty"`
	FileRequestData *FileRequestData       `json:",omitempty"`
	Callback        *int                   `json:",omitempty"`
}