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add ChatEventsConversations and refill README of telegramboapi-extensions-utils

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InsanusMokrassar 2020-05-10 16:25:42 +06:00
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5
CHANGELOG.md
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@ -59,6 +59,11 @@
* Expected class `MimeType` was added
* Field `MimeTyped#mimeType` now typed by `MimeType` instead of `String`
* `MediaGroupMemberInputMedia` children now can be deserialized (but only those ones who are declared inside library)
* `TelegramBotAPI-extensions-utils`:
* Chat events splitters added:
* Extension `Flow<ChatEventMessage>#channelEvents` was added
* Extension `Flow<ChatEventMessage>#groupEvents` was added
* Extension `Flow<ChatEventMessage>#supergroupEvents` was added
### 0.27.1

54
TelegramBotAPI-extensions-utils/README.md
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@ -67,18 +67,64 @@ val filter = bot.startGettingUpdates(
}
```
### Getting of only text incoming messages
### Filters
There are several filters for flows.
#### Sent messages
All sent messages can be filtered for three types:
| Type | Description | Flow extension |
|:---- |:----------- |:-------------- |
| Common messages | Simple messages with text, media, location, etc. | `asContentMessagesFlow` |
| Chat actions | New chat member, rename of chat, etc. | `asChatEventsFlow` |
| Unknown events | Any other messages, that contain unsupported data | `asUnknownMessagesFlow` |
##### Common messages
Unfortunately, due to the erasing of generic types, when you are using `asContentMessagesFlow` you will retrieve
data with type `ContentMessage<*>`. For correct filtering of content type for retrieved objects, was created special
filters:
| Type | Result type | Flow extension |
|:---- |:----------- |:-------------- |
| Animation | `ContentMessage<AnimationContent>`| `onlyAnimationContentMessages` |
| Audio | `ContentMessage<AudioContent>` | `onlyAudioContentMessages` |
| Contact | `ContentMessage<ContactContent>` | `onlyContactContentMessages` |
| Dice | `ContentMessage<DiceContent>` | `onlyDiceContentMessages` |
| Document | `ContentMessage<DocumentContent>` | `onlyDocumentContentMessages` |
| Game | `ContentMessage<GameContent>` | `onlyGameContentMessages` |
| Invoice | `ContentMessage<InvoiceContent>` | `onlyInvoiceContentMessages` |
| Location | `ContentMessage<LocationContent>` | `onlyLocationContentMessages` |
| Photo | `ContentMessage<PhotoContent>` | `onlyPhotoContentMessages` |
| Poll | `ContentMessage<PollContent>` | `onlyPollContentMessages` |
| Sticker | `ContentMessage<StickerContent>` | `onlyStickerContentMessages` |
| Text | `ContentMessage<TextContent>` | `onlyTextContentMessages` |
| Venue | `ContentMessage<VenueContent>` | `onlyVenueContentMessages` |
| Video | `ContentMessage<VideoContent>` | `onlyVideoContentMessages` |
| VideoNote | `ContentMessage<VideoNoteContent>` | `onlyVideoNoteContentMessages` |
| Voice | `ContentMessage<VoiceContent>` | `onlyVoiceContentMessages` |
For example, if you wish to get only photo messages from private chats of groups, you should call next code:
```kotlin
filter.asContentMessagesFlow().onlyTextContentMessages().onEach {
filter.messageFlow.asContentMessagesFlow().onlyPhotoContentMessages().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
##### Chat actions
Chat actions can be divided for three types of events source:
| Type | Flow extension |
|:---- |:-------------- |
| Channel events | `channelEvents` |
| Group events | `groupEvents` |
| Supergroup events | `supergroupEvents` |
## Shortcuts

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TelegramBotAPI-extensions-utils/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/extensions/utils/ChatEventsConversations.kt Normal file
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package com.github.insanusmokrassar.TelegramBotAPI.extensions.utils
import com.github.insanusmokrassar.TelegramBotAPI.types.message.*
import com.github.insanusmokrassar.TelegramBotAPI.types.message.abstracts.ChatEventMessage
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.mapNotNull
import kotlin.reflect.KClass
fun <T : ChatEventMessage> Flow<ChatEventMessage>.divideBySource(contentType: KClass<T>) = mapNotNull {
if (contentType.isInstance(it)) {
@Suppress("UNCHECKED_CAST")
it as T
} else {
null
}
}
fun Flow<ChatEventMessage>.channelEvents() = divideBySource(ChannelEventMessage::class)
fun Flow<ChatEventMessage>.groupEvents() = divideBySource(GroupEventMessage::class)
fun Flow<ChatEventMessage>.supergroupEvents() = divideBySource(SupergroupEventMessage::class)