Add basic channel and chat bridge.

foundation-bifrost/build.gradle.kts

@@ -1,5 +1,7 @@
 dependencies {
-  implementation("net.dv8tion:JDA:5.0.0-alpha.2")
+  implementation("net.dv8tion:JDA:5.0.0-alpha.2") {
+    exclude(module = "opus-java")
+  }
 
   compileOnly(project(":foundation-core"))
 }

foundation-bifrost/src/main/kotlin/cloud/kubelet/foundation/bifrost/FoundationBifrostPlugin.kt

@@ -1,13 +1,68 @@
 package cloud.kubelet.foundation.bifrost
 
+import cloud.kubelet.foundation.bifrost.model.BifrostConfig
 import cloud.kubelet.foundation.core.FoundationCorePlugin
+import cloud.kubelet.foundation.core.Util
+import com.charleskorn.kaml.Yaml
+import io.papermc.paper.event.player.AsyncChatEvent
+import net.dv8tion.jda.api.JDA
+import net.dv8tion.jda.api.JDABuilder
+import net.dv8tion.jda.api.events.GenericEvent
+import net.dv8tion.jda.api.events.message.MessageReceivedEvent
+import net.dv8tion.jda.api.hooks.EventListener
+import net.kyori.adventure.text.Component
+import net.kyori.adventure.text.TextComponent
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
 import org.bukkit.plugin.java.JavaPlugin
+import kotlin.io.path.inputStream
+
+class FoundationBifrostPlugin : JavaPlugin(), EventListener, Listener {
+  private lateinit var config: BifrostConfig
+  private lateinit var jda: JDA
 
-class FoundationBifrostPlugin : JavaPlugin() {
   override fun onEnable() {
-    slF4JLogger.info("Enabling!")
-
     val foundation = server.pluginManager.getPlugin("Foundation") as FoundationCorePlugin
     slF4JLogger.info("Plugin data path: ${foundation.pluginDataPath}")
+
+    val configPath = Util.copyDefaultConfig(slF4JLogger, foundation.pluginDataPath, "bifrost.yaml")
+    config = Yaml.default.decodeFromStream(BifrostConfig.serializer(), configPath.inputStream())
+
+    server.pluginManager.registerEvents(this, this)
+
+    jda = JDABuilder
+      .createDefault(config.authentication.token)
+      .addEventListeners(this)
+      .build()
+  }
+
+  override fun onEvent(e: GenericEvent) {
+    when (e) {
+      is MessageReceivedEvent -> {
+        // Prevent this bot from receiving its own messages and creating a feedback loop.
+        if (e.author.id == jda.selfUser.id) return
+
+        slF4JLogger.debug(
+          "${e.guild.name} - ${e.channel.name} - ${e.author.name}: ${e.message.contentDisplay}"
+        )
+        server.sendMessage(Component.text("${e.author.name} - ${e.message.contentDisplay}"))
+      }
+    }
+  }
+
+  @EventHandler
+  private fun onPlayerChat(e: AsyncChatEvent) {
+    val channel = jda.getTextChannelById(config.channel.id)
+    if (channel == null) {
+      slF4JLogger.error("Failed to retrieve channel ${config.channel.id}")
+      return
+    }
+
+    val message = e.message()
+    if (message is TextComponent) {
+      channel.sendMessage("${e.player.name}: ${message.content()}").queue()
+    } else {
+      slF4JLogger.error("Not sure what to do here, message != TextComponent: ${message.javaClass}")
+    }
   }
 }

foundation-bifrost/src/main/kotlin/cloud/kubelet/foundation/bifrost/model/BifrostConfig.kt

@@ -0,0 +1,19 @@
+package cloud.kubelet.foundation.bifrost.model
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class BifrostConfig(
+  val authentication: BifrostAuthentication,
+  val channel: BifrostChannel,
+)
+
+@Serializable
+data class BifrostAuthentication(
+  val token: String,
+)
+
+@Serializable
+data class BifrostChannel(
+  val id: String,
+)