7 files changed, 146 insertions, 0 deletions
diff --git a/src/main/kotlin/com/romangraef/jdacommander/BaseInformation.kt b/src/main/kotlin/com/romangraef/jdacommander/BaseInformation.kt
new file mode 100644
index 0000000..fdf4a67
--- /dev/null
+++ b/src/main/kotlin/com/romangraef/jdacommander/BaseInformation.kt
@@ -0,0 +1,8 @@
+package com.romangraef.jdacommander
+
+import com.beust.jcommander.Parameter
+
+class BaseInformation {
+	@Parameter(names = ["-p", "--private", "--direct", "--dm"])
+	var sendToDM: Boolean = false
+}
diff --git a/src/main/kotlin/com/romangraef/jdacommander/Command.kt b/src/main/kotlin/com/romangraef/jdacommander/Command.kt
new file mode 100644
index 0000000..a5178e6
--- /dev/null
+++ b/src/main/kotlin/com/romangraef/jdacommander/Command.kt
@@ -0,0 +1,8 @@
+package com.romangraef.jdacommander
+
+@Retention(AnnotationRetention.RUNTIME)
+@Target(AnnotationTarget.CLASS)
+annotation class Command
+	(
+	val value: String
+)
+\ No newline at end of file
diff --git a/src/main/kotlin/com/romangraef/jdacommander/ICommand.kt b/src/main/kotlin/com/romangraef/jdacommander/ICommand.kt
new file mode 100644
index 0000000..99fee95
--- /dev/null
+++ b/src/main/kotlin/com/romangraef/jdacommander/ICommand.kt
@@ -0,0 +1,14 @@
+package com.romangraef.jdacommander
+
+import net.dv8tion.jda.api.entities.Message
+import net.dv8tion.jda.api.entities.MessageChannel
+import net.dv8tion.jda.api.requests.RestAction
+
+abstract class ICommand {
+	lateinit var base: BaseInformation
+	lateinit var message: Message
+	abstract fun run()
+	val channel get() = message.channel
+	val jda get() = message.jda
+	val responseChannel: RestAction<out MessageChannel> get() = if (base.sendToDM) message.author.openPrivateChannel() else SyncRestAction(jda, channel)
+}
diff --git a/src/main/kotlin/com/romangraef/jdacommander/SyncRestAction.kt b/src/main/kotlin/com/romangraef/jdacommander/SyncRestAction.kt
new file mode 100644
index 0000000..27b0b10
--- /dev/null
+++ b/src/main/kotlin/com/romangraef/jdacommander/SyncRestAction.kt
@@ -0,0 +1,28 @@
+package com.romangraef.jdacommander
+
+import java.util.concurrent.CompletableFuture
+import java.util.function.BooleanSupplier
+import java.util.function.Consumer
+import net.dv8tion.jda.api.JDA
+import net.dv8tion.jda.api.requests.RestAction
+
+class SyncRestAction<I>(private val jda: JDA, private val value: I) : RestAction<I> {
+	override fun getJDA(): JDA = jda
+
+	override fun setCheck(checks: BooleanSupplier?): RestAction<I> {
+		// No need for last Second checks.
+		// We don't execute HTTP requests anyways.
+		return this
+	}
+
+	override fun queue(success: Consumer<in I>?, failure: Consumer<in Throwable>?) {
+		success?.accept(value)
+	}
+
+	override fun complete(shouldQueue: Boolean): I = value
+
+	override fun submit(shouldQueue: Boolean): CompletableFuture<I> =
+		CompletableFuture.supplyAsync { value }
+
+
+}
+\ No newline at end of file
diff --git a/src/main/kotlin/com/romangraef/jdacommander/commands/EchoCommand.kt b/src/main/kotlin/com/romangraef/jdacommander/commands/EchoCommand.kt
new file mode 100644
index 0000000..edf50ba
--- /dev/null
+++ b/src/main/kotlin/com/romangraef/jdacommander/commands/EchoCommand.kt
@@ -0,0 +1,20 @@
+package com.romangraef.jdacommander.commands
+
+import com.beust.jcommander.Parameter
+import com.romangraef.jdacommander.Command
+import com.romangraef.jdacommander.ICommand
+
+@Command("echo")
+class EchoCommand : ICommand() {
+	@Parameter(names = ["-c", "--caps", "--capitalize"], description = "Convert the text to upper case")
+	var caps: Boolean = false
+
+	@Parameter(description = "Text to echo back")
+	lateinit var texts: List<String>
+	val text get() = texts.joinToString(" ")
+
+	override fun run() = responseChannel.queue {
+		it.sendMessage(if (caps) text.toUpperCase() else text).queue()
+	}
+
+}
diff --git a/src/main/kotlin/com/romangraef/jdacommander/commands/HelpCommand.kt b/src/main/kotlin/com/romangraef/jdacommander/commands/HelpCommand.kt
new file mode 100644
index 0000000..63a69fc
--- /dev/null
+++ b/src/main/kotlin/com/romangraef/jdacommander/commands/HelpCommand.kt
@@ -0,0 +1,23 @@
+package com.romangraef.jdacommander.commands
+
+import com.beust.jcommander.Parameter
+import com.romangraef.jdacommander.Command
+import com.romangraef.jdacommander.ICommand
+
+@Command("help")
+class HelpCommand : ICommand() {
+
+	@Parameter(description = "Help Topic")
+	var helpTopic: String? = null
+
+	override fun run() = responseChannel.queue {
+		it.sendMessage(
+			if (helpTopic == null) {
+				"Helping...."
+			} else {
+				"Helping on topic $helpTopic"
+			}
+		).queue()
+	}
+
+}
diff --git a/src/main/kotlin/com/romangraef/jdacommander/start.kt b/src/main/kotlin/com/romangraef/jdacommander/start.kt
new file mode 100644
index 0000000..465d79c
--- /dev/null
+++ b/src/main/kotlin/com/romangraef/jdacommander/start.kt
@@ -0,0 +1,45 @@
+package com.romangraef.jdacommander
+
+import com.beust.jcommander.JCommander
+import net.dv8tion.jda.api.JDABuilder
+import net.dv8tion.jda.api.events.message.MessageReceivedEvent
+import net.dv8tion.jda.api.hooks.ListenerAdapter
+import org.reflections.Reflections
+
+fun loadCommands(packageName: String): Map<String, Class<out ICommand>> {
+	val reflections = Reflections(packageName)
+	return reflections.getTypesAnnotatedWith(Command::class.java)
+		.map {
+			println(it)
+			it
+		}
+		.filter { ICommand::class.java.isAssignableFrom(it) }
+		.map {
+			it.getAnnotation(Command::class.java).value to (it as Class<out ICommand>)
+		}.toMap()
+}
+
+fun main() {
+	val allCommands = loadCommands("com.romangraef.jdacommander.commands")
+	JDABuilder.createDefault(System.getenv("DISCORD_TOKEN"))
+		.addEventListeners(object : ListenerAdapter() {
+			override fun onMessageReceived(event: MessageReceivedEvent) {
+				val text = event.message.contentRaw
+				if (!text.startsWith("!")) return
+				val jCommander = JCommander()
+				val bi = BaseInformation()
+				allCommands.forEach { (name, `class`) ->
+					jCommander.addCommand(name, `class`.newInstance())
+				}
+				jCommander.addObject(bi)
+				jCommander.parse(*text.substring(1).split("\\s+".toRegex()).toTypedArray())
+				val parsedCommand = jCommander.parsedCommand
+				jCommander.findCommandByAlias(parsedCommand).objects.filterIsInstance<ICommand>().forEach {
+					it.base = bi
+					it.message = event.message
+					it.run()
+				}
+			}
+		})
+		.build()
+}
+\ No newline at end of file