mirror of
https://github.com/InsanusMokrassar/TelegramBotAPI.git
synced 2024-11-30 14:08:44 +00:00
159 lines
6.1 KiB
Markdown
159 lines
6.1 KiB
Markdown
# TelegramBotAPI Core
|
|
|
|
[](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi.core)
|
|
|
|
## What is it?
|
|
|
|
Library for Object-Oriented and type-safe work with Telegram Bot API. Most part of some specific solves or unuseful
|
|
moments are describing by official [Telegram Bot API](https://core.telegram.org/bots/api).
|
|
|
|
## 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.version`, which must be set up by developer. Available versions are presented on
|
|
maven central, next version is last published:
|
|
|
|
[](https://maven-badges.herokuapp.com/maven-central/dev.inmo/tgbotapi.core)
|
|
|
|
Currently, last versions of library can be available from the Maven repository with errors (for the reason difficult in publishing
|
|
of signed artifacts in Bintray). You can:
|
|
|
|
* Use earlier version (available version you can find
|
|
[here](https://mvnrepository.com/artifact/com.github.insanusmokrassar/TelegramBotAPI) (before 0.28.0) or [here](https://mvnrepository.com/artifact/dev.inmo/tgbotapi.core))
|
|
* Add `mavenCentral` repository in build config
|
|
|
|
### Maven
|
|
|
|
Dependency config presented here:
|
|
|
|
```xml
|
|
<dependency>
|
|
<groupId>dev.inmo</groupId>
|
|
<artifactId>tgbotapi.core</artifactId>
|
|
<version>${telegrambotapi.version}</version>
|
|
</dependency>
|
|
```
|
|
|
|
### Gradle
|
|
|
|
To use last versions you will need to add one line in repositories block of your `build.gradle`:
|
|
|
|
`mavenCentral()`
|
|
|
|
And add next line to your dependencies block:
|
|
|
|
```groovy
|
|
implementation "dev.inmo:tgbotapi.core:$telegrambotapi_version"
|
|
```
|
|
|
|
or for old gradle:
|
|
|
|
```groovy
|
|
compile "dev.inmo:tgbotapi.core:$telegrambotapi_version"
|
|
```
|
|
|
|
## How to work with library?
|
|
|
|
For now, this library have no some API god-object. Instead of this, this library has several
|
|
important objects:
|
|
|
|
* [RequestsExecutor](https://github.com/InsanusMokrassar/TelegramBotAPI/blob/master/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/bot/RequestsExecutor.kt)
|
|
* [Requests](https://github.com/InsanusMokrassar/TelegramBotAPI/blob/master/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/requests)
|
|
* [Types](https://github.com/InsanusMokrassar/TelegramBotAPI/blob/master/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types)
|
|
|
|
### Types
|
|
|
|
Types declare different objects representation. For example, `Chat` for now represented as
|
|
interface and has several realisations:
|
|
|
|
* `PrivateChat`
|
|
* `GroupChat`
|
|
* `SupergroupChat`
|
|
* `ChannelChat`
|
|
|
|
Instead of common garbage with all information as in original [Chat](https://core.telegram.org/bots/api#chat),
|
|
here it was separated for more obvious difference between chats types and their possible content.
|
|
|
|
The same principle work with a lot of others things in this Telegram bot API.
|
|
|
|
### Requests
|
|
|
|
Requests usually are very simple objects, but some of them are using their own
|
|
build factories. For example, the next code show, how to get information about bot:
|
|
|
|
```kotlin
|
|
val requestsExecutor: RequestsExecutor = ...
|
|
requestsExecutor.execute(GetMe())
|
|
```
|
|
|
|
Also there is an alternative syntax for requests (like `requestsExecutor.getMe()` in project
|
|
[tgbotapi.api](../tgbotapi.api/README.md))
|
|
|
|
The result type of [GetMe (and getMe extension)](https://github.com/InsanusMokrassar/TelegramBotAPI/blob/master/tgbotapi.core/src/commonMain/kotlin/com/github/insanusmokrassar/tgbotapi/requests/GetMe.kt)
|
|
request is
|
|
[ExtendedBot](https://github.com/InsanusMokrassar/TelegramBotAPI/blob/master/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/User.kt).
|
|
|
|
### RequestsExecutor
|
|
|
|
It is base object which can be used to execute requests in API. For now by default included Ktor
|
|
realisation of `RequestsExecutor`, but it is possible, that in future it will be extracted in separated
|
|
project. How to create `RequestsExecutor`:
|
|
|
|
```kotlin
|
|
val requestsExecutor = KtorRequestsExecutor(
|
|
TelegramAPIUrlsKeeper(TOKEN)
|
|
)
|
|
```
|
|
|
|
Here:
|
|
|
|
* `KtorRequestsExecutor` - default realisation with [ktor](https://ktor.io)
|
|
* `TelegramAPIUrlsKeeper` - special keeper, which you can save and use for getting files full urls (`resolveFileURL`
|
|
extension inside of `PathedFile.kt`)
|
|
* `TOKEN` is just a token of bot which was retrieved according to
|
|
[instruction](https://core.telegram.org/bots#3-how-do-i-create-a-bot).
|
|
|
|
By default, for JVM there is implemented `CIO` client engine, but there is not server engine. Both can be changed like
|
|
here:
|
|
|
|
```groovy
|
|
dependencies {
|
|
// ...
|
|
implementation "io.ktor:ktor-server-cio:$ktor_version" // for implementing of server engine
|
|
implementation "io.ktor:ktor-client-okhttp:$ktor_version" // for implementing of additional client engine
|
|
// ...
|
|
}
|
|
```
|
|
|
|
You can avoid using of `server` dependency in case if you will not use `Webhook`s. In this case,
|
|
dependencies list will be simplify:
|
|
|
|
```groovy
|
|
dependencies {
|
|
// ...
|
|
implementation "io.ktor:ktor-client-okhttp:$ktor_version" // for implementing of additional client engine
|
|
// ...
|
|
}
|
|
```
|
|
|
|
Here was used `okhttp` realisation of client, but there are several others engines for Ktor. More information
|
|
available on ktor.io site for [client](https://ktor.io/clients/http-client/engines.html) and [server](https://ktor.io/quickstart/artifacts.html)
|
|
engines.
|
|
|
|
### Passport
|
|
|
|
In case you wish to work with `Telegram Passport`, currently there are several useful things, but most part of working
|
|
with decryption and handling is available only on JVM. Next snippet contains example of data decryption on JVM platform:
|
|
|
|
```kotlin
|
|
passportMessage.passportData.doInDecryptionContextWithPKCS8Key(privateKey) {
|
|
val passportDataSecureValue = passport ?.data ?: return@doInDecryptionContextWithPKCS8Key
|
|
val passportData = (passportMessage.passportData.data.firstOrNull { it is CommonPassport } ?: return@doInDecryptionContextWithPKCS8Key) as CommonPassport
|
|
val decrypted = passportDataSecureValue.decrypt(
|
|
passportData.data
|
|
) ?.decodeToString() ?: return@doInDecryptionContextWithPKCS8Key
|
|
println(decrypted)
|
|
}
|
|
```
|