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33 lines
1.6 KiB
Markdown
33 lines
1.6 KiB
Markdown
# TelegramBotAPI Behaviour Builder FSM Extensions
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[](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi.behaviour_builder.fsm)
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## What is it?
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This extension has been created to integrate finite state machine in [BehaviourBuilder](../tgbotapi.behaviour_builder/README.md).
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In case you wish to use some custom store for steps (states), you may extend `StatesManager` or use `DefaultStatesManager`
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with custom `DefaultStatesManagerRepo`. See [Examples repo](https://github.com/InsanusMokrassar/TelegramBotAPI-examples/tree/master/FSMBot)
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to get more info and see how it works on base level.
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Lets see several examples:
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```kotlin
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data class StateRealization(override val context: ChatId) : State
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bot.telegramBotWithBehaviourAndFSMAndStartLongPolling(TOKEN) {
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strictlyOn<StateRealization> {
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// here your logic of state
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it // you must return from state handler some other state as a result of this one or null if you want to complete the chain
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}
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onCommand("start") {
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startChain(StateRealization(it.chat.id)) // starting of chain with StateRealization state
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}
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}
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```
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Currently, for the states there is only one restriction - your state must implements `State` interface and override `context` to define it. It may be important that `context` will be used under the hood for comparison with contexts of other states in some situations in it may be important to correctly realize `equals` method.
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It is important, that all other methods are the same as for [BehaviourBuilder](../tgbotapi.behaviour_builder/README.md).
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