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RpcService.kt
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RpcService.kt
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/*
* Copyright 2017-2020 Aljoscha Grebe
* Copyright 2023-2024 Axel JOLY (Azn9) <contact@azn9.dev>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dev.azn9.plugins.discord.rpc
import com.intellij.openapi.components.Service
import com.intellij.openapi.components.service
import com.intellij.openapi.util.Disposer
import com.intellij.util.IncorrectOperationException
import dev.azn9.plugins.discord.DiscordPlugin
import dev.azn9.plugins.discord.rpc.connection.DiscordConnection
import dev.azn9.plugins.discord.rpc.connection.DiscordIpcConnection
import dev.azn9.plugins.discord.utils.DisposableCoroutineScope
import dev.azn9.plugins.discord.utils.warnLazy
import kotlinx.coroutines.*
import kotlinx.coroutines.sync.Mutex
import kotlinx.coroutines.sync.withLock
val rpcService: RpcService
get() = service()
typealias UserCallback = (User?) -> Unit
@Service
class RpcService : DisposableCoroutineScope {
override val parentJob: Job = SupervisorJob()
private var _user: User? = null
val user: User
get() = _user ?: User.CLYDE
private var connection: DiscordConnection? = null
private var lastPresence: RichPresence? = null
private val mutex = Mutex()
private val exceptionHandler = CoroutineExceptionHandler { _, error ->
DiscordPlugin.LOG.warnLazy(error) { "Error while updating presence" }
}
private fun updateUser(user: User?) {
_user = user
}
fun update(presence: RichPresence?, forceUpdate: Boolean = false, forceReconnect: Boolean = false) = launch {
mutex.withLock {
launch(exceptionHandler) action@{
DiscordPlugin.LOG.debug("Updating presence, forceUpdate=$forceUpdate, forceReconnect=$forceReconnect")
if (!(forceUpdate || forceReconnect) && lastPresence != null) {
if (lastPresence == presence) {
DiscordPlugin.LOG.debug("Presence unchanged, skipping update")
return@action
}
lastPresence = presence
}
if (presence?.appId == null) { // Stop connection
when (presence) {
null -> DiscordPlugin.LOG.debug("Presence null, stopping connection")
else -> DiscordPlugin.LOG.debug("Presence.appId null, stopping connection")
}
if (connection != null) {
try {
withTimeout(500) {
connection!!.clearActivity()
connection!!.disconnect()
}
} catch (e: Exception) {
DiscordPlugin.LOG.warnLazy(e) { "Error disconnecting" }
}
connection = null
}
} else {
if (forceReconnect || connection?.appId != presence.appId) {
when {
forceReconnect -> DiscordPlugin.LOG.debug("Forcing reconnect to client")
connection == null -> DiscordPlugin.LOG.debug("Connecting to client")
else -> DiscordPlugin.LOG.debug("Reconnecting to client due to changed appId")
}
if (connection != null) {
try {
withTimeout(500) {
connection!!.clearActivity()
}
} catch (e: Exception) {
DiscordPlugin.LOG.warnLazy(e) { "Error clearing activity" }
}
Disposer.dispose(connection!!)
connection?.disconnect()
connection = null
}
try {
connection = createConnection(presence.appId).apply {
Disposer.register(this@RpcService, this@apply)
connect()
}
} catch (e: IncorrectOperationException) // Registering while parent is alreay disposed
{
DiscordPlugin.LOG.warnLazy(e) { "Error re-creating connection" }
}
}
withTimeoutOrNull(4500) {
connection?.send(presence)
}
}
}
}
}
override fun dispose() {
runBlocking { update(null) }
super.dispose()
}
private fun createConnection(appId: Long): DiscordConnection {
return DiscordIpcConnection(appId, ::updateUser)
}
}