DraftsBot

DraftsBot demonstrates streaming a message draft before sending the finished message. It receives updates through long polling and uses the same built-in Lorem ipsum text for both examples.

Commands

/test_draft_flow publishes progressively longer 50-character prefixes every 500 ms, then sends the complete text as a normal message.
/test_empty_draft first publishes an empty draft, waits 1.5 seconds, streams the same prefixes, and then sends the complete text.

The bot advertises both commands in Telegram's command menu for all group chats. The handlers themselves are not restricted by chat type, so either command can also be entered manually in a private chat.

Setup

Obtain a bot token and keep it out of source control.
Start a private chat with the bot, or add it to a group where you want to run the example.
In groups, allow the bot to send messages. No administrator rights are otherwise required by this example.

The first program argument is required and must be the bot token. Omitting it causes startup to fail; any later arguments are ignored.

Run

From the repository root, run:

./gradlew :DraftsBot:run --args="<BOT_TOKEN>"

Known issue: DraftsBot/build.gradle currently declares TopicsHandlingKt as the main class, while this bot's entry point is DraftsBotKt. The run task cannot start until that Gradle setting is corrected; it is left unchanged by this documentation-only update.

Every received update is printed to standard output. Unhandled polling errors are printed with their stack traces, and HTTP request, socket, and connection timeouts are each configured to 30 seconds.