Static chains

Entry point will be command, callback, reaction etc.:

fun BotHandling.startHandler() {
    command("/start") {
        sendMessage("Enter your name")
    }
}

Then it is very simply add the next step of the chain using parameter next = and method step():

fun BotHandling.startCommand() {
    command("/start", next = "get_name") {
        sendMessage("Enter your name")
    }

    step("get_name") {
        sendMessage("Hello, $text!")
    }
}

This way we can make chains of any length:

fun BotHandling.startCommand() {
    command("/start", next = "get_name") {
        sendMessage("Please enter your name")
    }

    step("get_name", next = "get_age") {
        sendMessage("Hello, $text!")
        sendMessage("Please enter your age")
    }

    step("get_age") {
        val age = text.toIntOrNull() ?: throw ChatException("An integer is expected")
        
        sendMessage("$age years - recorded")
    }
}

Last modified: 07 September 2024