TelegramBotAPI Util Extensions

What is it?

It is wrapper library for TelegramBotAPI. Currently, this library contains some usefull filters for commands, updates types and different others.

How to implement library?

Common ways to implement this library are presented here. In some cases it will require additional steps like inserting of additional libraries (like kotlin stdlib). In the examples will be used variable telegrambotapi-extensions-utils_version, which must be set up by developer. Available versions are presented on bintray, next version is last published:

Maven

Dependency config presented here:

<dependency>
  <groupId>com.github.insanusmokrassar</groupId>
  <artifactId>TelegramBotAPI-extensions-utils</artifactId>
  <version>${telegrambotapi-extensions-utils_version}</version>
</dependency>

Gradle

To use last versions you will need to add one line in repositories block of your build.gradle:

jcenter() or mavenCentral()

And add next line to your dependencies block:

implementation "com.github.insanusmokrassar:TelegramBotAPI-extensions-utils:$telegrambotapi-extensions-utils_version"

or for old gradle:

compile "com.github.insanusmokrassar:TelegramBotAPI-extensions-utils:$telegrambotapi-extensions-utils_version"

How to use?

Here will be presented several examples of usage. In all cases it is expected that you have created your bot and filter:

val bot: RequestsExecutor = KtorRequestsExecutor(
    TelegramAPIUrlsKeeper(BOT_TOKEN)
)
val filter = FlowsUpdatesFilter(64)

Alternative way to use the things below:

val filter = bot.startGettingUpdates(
    scope = CoroutineScope(Dispatchers.Default)
) {
    // place code from examples here with replacing of `filter` by `this`
}

Getting of only text incoming messages

filter.asContentMessagesFlow().onlyTextContentMessages().onEach {
    println(it.content)
    println(it.fullEntitiesList())
}.launchIn(
    CoroutineScope(Dispatchers.Default)
)

As a result, each received message which will be just text message will be printed out with full list of its internal entities

Shortcuts

With shortcuts you are able to use simple factories for several things.

ScheduledCloseInfo

In case if you are creating some poll, you able to use next shortcuts.

Next sample will use info with closing at the 10 seconds after now:

closePollExactAt(DateTime.now() + TimeSpan(10000.0))

In this example we will do the same, but in another way:

closePollExactAfter(10)

Here we have passed 10 seconds and will get the same result object.

In opposite to previous shortcuts, the next one will create approximate closing schedule:

closePollAfter(10)

The main difference here is that the last one will be closed after 10 seconds since the sending. With first samples will be created exact time for closing of poll

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