editable.go

package gtb

// Editable is an interface for all objects that
// provide "message signature", a pair of 32-bit
// message ID and 64-bit chat ID, both required
// for edit operations.
//
// Use case: DB model struct for messages to-be
// edited with, say two collums: msg_id,chat_id
// could easily implement MessageSig() making
// instances of stored messages editable.
type Editable interface {
	// MessageSig is a "message signature".
	//
	// For inline messages, return chatID = 0.
	MessageSig() (messageID string, chatID int64)
}

// StoredMessage is an example struct suitable for being
// stored in the database as-is or being embedded into
// a larger struct, which is often the case (you might
// want to store some metadata alongside, or might not.)
type StoredMessage struct {
	MessageID string `sql:"message_id" json:"message_id"`
	ChatID    int64  `sql:"chat_id" json:"chat_id"`
}

func (x StoredMessage) MessageSig() (string, int64) {
	return x.MessageID, x.ChatID
}