Add com.shr4pnel.ferretirc.irc package to model the live state of IRC

src/main/kotlin/com/shr4pnel/ferretirc/irc/Server.kt

@@ -0,0 +1,36 @@
+package com.shr4pnel.ferretirc.irc
+
+import com.shr4pnel.ferretirc.net.messages.ClientMessage
+import com.shr4pnel.ferretirc.net.messages.ServerMessage
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.filterIsInstance
+import kotlinx.coroutines.flow.onSubscription
+import kotlinx.coroutines.flow.takeWhile
+
+class Server(private val msgBuffer: SharedFlow<ServerMessage>, private val outgoingMessages: Channel<ClientMessage>, private val scope: CoroutineScope) {
+    lateinit var features: ISupportFeatures
+        private set
+
+    var channels: Set<IRCChannel> = setOf()
+        private set
+
+    suspend fun fetchChannels(): Set<IRCChannel> {
+        val buffer = mutableSetOf<IRCChannel>()
+
+        msgBuffer
+            .onSubscription { outgoingMessages.send(ClientMessage.List()) }
+            .filterIsInstance<ServerMessage.Numeric>()
+            .takeWhile { it !is ServerMessage.Numeric.RPL_LISTEND }
+            .filterIsInstance<ServerMessage.Numeric.RPL_LIST>()
+            .collect { buffer.add(IRCChannel(it.chanName, it.clientCount, it.topic)) }
+
+        channels = buffer.toSortedSet(compareBy { it.chanName })
+        return channels
+    }
+
+    fun fetchFeatures() {
+
+    }
+}