FSMBot

A demonstration of the Finite State Machine (FSM) pattern provided by the MicroUtils library.

Functionality

Implements a simple two-state FSM. After /start is sent, the bot enters ExpectContentOrStopState and re-sends every message it receives back to the user. This continues until the user sends /stop, at which point the FSM transitions to StopState and content forwarding ends.

Arguments

Position	Value	Description
1	`BOT_TOKEN`	Telegram bot token

Optional arguments (any order after the token):

Value	Description
`debug`	Enable verbose debug logging
`testServer`	Connect to the Telegram test server instead of production

Bot Commands

Command	Description
`/start`	Starts the FSM loop — bot begins echoing content back to the user
`/stop`	Ends the FSM loop — bot stops echoing

Capabilities

Two-state FSM: ExpectContentOrStopState → StopState
ExpectContentOrStopState uses expectContentOrCommands() to filter messages
Erroneous FSM states are caught and handled gracefully
Runs via long polling

Launch

../gradlew run --args="BOT_TOKEN"

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