128 lines
3.8 KiB
Markdown
128 lines
3.8 KiB
Markdown
# TelegramBotAPI API extensions
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[](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi.api)
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## What is it?
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It is wrapper library for [TelegramBotAPI Core](../tgbotapi.core/README.md). Here you can find extensions for
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`RequestsExecutor`, which are more look like Telegram Bot API requests and in the same time have more obvious signatures
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to help understand some restrictions in Telegram system.
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## Compatibility
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This library always compatible with original `tgbotapi.core` library version
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## How to implement library?
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Common ways to implement this library are presented here. In some cases it will require additional steps
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like inserting of additional libraries (like `kotlin stdlib`). In the examples will be used variable
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`telegrambotapi-extensions-api.version`, which must be set up by developer.
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[](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi.api)
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### Maven
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Dependency config presented here:
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```xml
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<dependency>
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<groupId>dev.inmo</groupId>
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<artifactId>tgbotapi.api</artifactId>
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<version>${telegrambotapi-extensions-api.version}</version>
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</dependency>
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```
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### Gradle
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To use last versions you will need to add one line in repositories block of your `build.gradle`:
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`mavenCentral()`
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And add next line to your dependencies block:
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```groovy
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implementation "dev.inmo:tgbotapi.api:$telegrambotapi_extensions_api_version"
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```
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or for old gradle:
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```groovy
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compile "dev.inmo:tgbotapi.api:$telegrambotapi_extensions_api_version"
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```
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## Example of usage and comparison with `TelegramBotAPI`
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Here presented review table for comparison of api from original [TelegramBotAPI](../TelegramBotAPI/README.md#Requests)
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and extensions-api library. First of all, this library allow to create bot instance in a new way:
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```kotlin
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val bot = telegramBot("IT IS YOUR TOKEN")
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```
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There are a lot of signature for this. For example, you can create bot with next code:
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```kotlin
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val bot = telegramBot("IT IS YOUR TOKEN") {
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proxy = ProxyBuilder.socks("127.0.0.1", 1080)
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}
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```
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In all examples supposed that you have created bot.
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| tgbotapi.core | tgbotapi.api |
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|---------------------|-------------------------------|
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| bot.execute(GetMe) | bot.getMe() |
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| bot.execute(SendTextMessage(someChatId, text)) | bot.sendTextMessage(chat, text) |
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## Updates
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**Currently, these paragraphs almost outdated due to the fact that extensions for listening of updates and webhooks were
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replaced into `tgbotapi.utils`. But, most part of information below is correct with small fixes and
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adding of `tgbotapi.utils` dependency.**
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Usually, it is more comfortable to use filter object to get separated types of updates:
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```kotlin
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val filter = FlowsUpdatesFilter(100)
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```
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In this case you will be able:
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* Separate types of incoming updates (even media groups)
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* Simplify launch of getting updates:
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```kotlin
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bot.startGettingOfUpdates(
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filter,
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scope = CoroutineScope(Dispatchers.Default)
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)
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```
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* Use `filter` flows to comfortable filter, map and do other operations with the whole
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getting updates process:
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```kotlin
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filter.messageFlow.mapNotNull {
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it.data as? ContentMessage<*>
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}.onEach {
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println(it)
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}.launchIn(
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CoroutineScope(Dispatchers.Default)
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)
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```
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### Alternative way
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There is an alternative way to get updates. In fact it is almost the same, but could be more useful for some cases:
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```kotlin
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val filter = bot.startGettingOfUpdates(
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scope = CoroutineScope(Dispatchers.Default)
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) { // Here as reveiver will be FlowsUpdatesFilter
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messageFlow.mapNotNull {
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it.data as? ContentMessage<*>
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}.onEach {
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println(it)
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}.launchIn(
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CoroutineScope(Dispatchers.Default)
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)
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}
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```
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