refactor: Use Koin more and API to register module to Koin

bot/src/main/kotlin/io/github/null2264/tsukumogami/bot/Main.kt

@@ -1,10 +1,8 @@
 package io.github.null2264.tsukumogami.bot
 
 import co.touchlab.kermit.Logger
-import io.github.null2264.tsukumogami.bot.core.di.appModule
 import io.github.null2264.tsukumogami.bot.core.module.generalModule
 import io.github.null2264.tsukumogami.core.bot
-import org.koin.core.context.GlobalContext.startKoin
 
 suspend fun main() {
 

bot/src/main/kotlin/io/github/null2264/tsukumogami/bot/core/module/GeneralModule.kt

@@ -1,5 +1,6 @@
 package io.github.null2264.tsukumogami.bot.core.module
 
+import dev.kord.core.entity.effectiveName
 import io.github.null2264.tsukumogami.bot.core.module.arguments.Test2Arguments
 import io.github.null2264.tsukumogami.bot.core.module.arguments.TestArguments
 import io.github.null2264.tsukumogami.core.module.api.botModules
@@ -18,6 +19,7 @@ val generalModule = botModules("General") {
         groups("group") {
             commands("test", alias = setOf("t")) { ctx ->
                 ctx.reply("Hello world ${ctx.command?.module?.name}")
+                ctx.reply("Bot: ${ctx.bot.self().effectiveName}")
             }
         }
     }

core/src/main/kotlin/io/github/null2264/tsukumogami/core/Bot.kt

@@ -3,6 +3,7 @@ package io.github.null2264.tsukumogami.core
 import co.touchlab.kermit.Logger
 import dev.kord.core.Kord
 import dev.kord.core.entity.Message
+import dev.kord.core.entity.User
 import dev.kord.core.event.gateway.ReadyEvent
 import dev.kord.core.event.message.MessageCreateEvent
 import dev.kord.core.on
@@ -28,6 +29,8 @@ open class Bot internal constructor(): IGroup, TsukumogamiKoinComponent {
     internal lateinit var token: String
     override val allCommands: MutableMap<String, Command> = mutableMapOf()
 
+    suspend fun self() = client.getSelf().asUser()
+
     fun addModule(module: BotModule) {
         modules[module.name] = module.install(this)
     }
@@ -75,7 +78,7 @@ open class Bot internal constructor(): IGroup, TsukumogamiKoinComponent {
 
     private fun getContext(message: Message): Context {
         val parsed = message.content.parsePrefixAndCommand()
-        val context = Context(this, message, parsed?.first)
+        val context = Context(message, parsed?.first)
         context.command = getCommand(parsed?.second)
         if (context.command != null) context.invokedWith = parsed?.second
         return context

core/src/main/kotlin/io/github/null2264/tsukumogami/core/BotBuilder.kt

@@ -9,6 +9,7 @@ import io.github.null2264.tsukumogami.core.koin.TsukumogamiKoinContext
 import io.github.null2264.tsukumogami.core.module.BotModule
 import kotlin.reflect.KFunction
 import kotlinx.coroutines.runBlocking
+import org.koin.core.module.Module as KoinModule
 import org.koin.dsl.bind
 
 class BotBuilder internal constructor(
@@ -24,6 +25,9 @@ class BotBuilder internal constructor(
         }
     }
 
+    internal var beforeKoinSetup: () -> Unit = {}
+    internal var afterKoinSetup: () -> Unit = {}
+
     fun modules(vararg modules: BotModule) {
         modules.forEach(bot::addModule)
     }
@@ -31,9 +35,17 @@ class BotBuilder internal constructor(
     fun prefixes(vararg prefixes: String) {
         prefixes.forEach(bot::addPrefix)
     }
+
+    fun beforeKoinSetup(declaration: () -> Unit) {
+        beforeKoinSetup = declaration
+    }
+
+    fun afterKoinSetup(declaration: () -> Unit) {
+        afterKoinSetup = declaration
+    }
 }
 
-fun bot(clazz: KFunction<Bot> = ::Bot, declaration: BotBuilder.() -> Unit): Bot {
+suspend fun bot(clazz: KFunction<Bot> = ::Bot, declaration: BotBuilder.() -> Unit): Bot {
     if (TsukumogamiKoinContext.getOrNull() == null)
         TsukumogamiKoinContext.startKoin {
         }
@@ -42,11 +54,13 @@ fun bot(clazz: KFunction<Bot> = ::Bot, declaration: BotBuilder.() -> Unit): Bot
     val holder = BotBuilder(bot)
     declaration(holder)
 
-    val kord = runBlocking {
-        holder.kordBuilder(holder.token)
-    }
+    holder.beforeKoinSetup.invoke()
+
+    val kord = holder.kordBuilder(holder.token)
     loadModule { single { kord } bind Kord::class }
     loadModule { single { bot } bind Bot::class }
 
+    holder.afterKoinSetup.invoke()
+
     return holder.bot
 }

core/src/main/kotlin/io/github/null2264/tsukumogami/core/Context.kt

@@ -5,15 +5,18 @@ import dev.kord.core.entity.Message
 import dev.kord.rest.builder.message.AllowedMentionsBuilder
 import dev.kord.rest.builder.message.allowedMentions
 import io.github.null2264.tsukumogami.core.commands.Command
+import io.github.null2264.tsukumogami.core.koin.TsukumogamiKoinComponent
+import org.koin.core.component.inject
 
 class Context(
-    val bot: Bot,
     val message: Message,
     /**
      * The prefix that used to invoke the command
      */
     val prefix: String?,
-) {
+) : TsukumogamiKoinComponent {
+
+    val bot: Bot by inject()
 
     /**
      * The user that invoked the command

core/src/main/kotlin/io/github/null2264/tsukumogami/core/commands/annotation/Command.kt

@@ -1,12 +0,0 @@
-package io.github.null2264.tsukumogami.core.commands.annotation
-
-/**
- * Annotation to tag a function as command
- *
- * @param name the command's name
- * @param description the command's description
- * @param help the command's extended description (a more detailed description)
- */
-@Retention(AnnotationRetention.RUNTIME)
-@Target(AnnotationTarget.FUNCTION)
-annotation class Command(val name: String = "", val description: String = "", val help: String = "")