commonMain.net.folivo.trixnity.client.user.PresenceEventHandler.kt Maven / Gradle / Ivy

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Multiplatform Kotlin SDK for matrix-protocol

There is a newer version: 4.7.1

package net.folivo.trixnity.client.user

import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.update
import net.folivo.trixnity.clientserverapi.client.MatrixClientServerApiClient
import net.folivo.trixnity.core.EventHandler
import net.folivo.trixnity.core.model.UserId
import net.folivo.trixnity.core.model.events.ClientEvent
import net.folivo.trixnity.core.model.events.m.PresenceEventContent
import net.folivo.trixnity.core.model.events.senderOrNull
import net.folivo.trixnity.core.subscribeContent
import net.folivo.trixnity.core.unsubscribeOnCompletion

interface PresenceEventHandler : EventHandler {
    val userPresence: StateFlow>
}

class PresenceEventHandlerImpl(
    private val api: MatrixClientServerApiClient,
) : EventHandler, PresenceEventHandler {

    override fun startInCoroutineScope(scope: CoroutineScope) {
        api.sync.subscribeContent(subscriber = ::setPresence).unsubscribeOnCompletion(scope)
    }

    private val _userPresence = MutableStateFlow(mapOf())
    override val userPresence = _userPresence.asStateFlow()

    internal fun setPresence(presenceEvent: ClientEvent) {
        presenceEvent.senderOrNull?.let { sender ->
            _userPresence.update { oldValue -> oldValue + (sender to presenceEvent.content) }
        }
    }
}