Add getConfig feature to retrieve the current config file

This implements #11 and is preparation for config reloading at runtime

src/main/kotlin/moe/kageru/kagebot/config/ConfigParser.kt

@@ -4,8 +4,11 @@ import moe.kageru.kagebot.Globals
 import moe.kageru.kagebot.command.Command
 import moe.kageru.kagebot.features.Features
 import java.awt.Color
+import java.io.File
 
 object ConfigParser {
+    val configFile: File = File(RawConfig.DEFAULT_CONFIG_PATH)
+
     fun initialLoad(rawConfig: RawConfig) {
         val systemConfig = rawConfig.system?.let(::SystemConfig)
             ?: throw IllegalArgumentException("No [system] block in config.")

src/main/kotlin/moe/kageru/kagebot/config/RawConfig.kt

@@ -13,7 +13,7 @@ class RawConfig(
     val features: RawFeatures?
 ) {
     companion object {
-        private const val DEFAULT_CONFIG_PATH = "config.toml"
+        const val DEFAULT_CONFIG_PATH = "config.toml"
 
         fun readFromString(tomlContent: String): RawConfig = Toml().read(tomlContent).to(RawConfig::class.java)
 

src/main/kotlin/moe/kageru/kagebot/features/Features.kt

@@ -2,14 +2,25 @@ package moe.kageru.kagebot.features
 
 import moe.kageru.kagebot.config.RawFeatures
 
-class Features(val welcome: WelcomeFeature?, debug: DebugFeature, help: HelpFeature) {
+class Features(
+    val welcome: WelcomeFeature?,
+    debug: DebugFeature,
+    help: HelpFeature,
+    getConfig: GetConfigFeature
+) {
     constructor(rawFeatures: RawFeatures) : this(
         rawFeatures.welcome?.let(::WelcomeFeature),
         DebugFeature(),
-        HelpFeature()
+        HelpFeature(),
+        GetConfigFeature()
     )
 
-    private val featureMap = mapOf("help" to help, "debug" to debug, "welcome" to welcome)
+    private val featureMap = mapOf(
+        "help" to help,
+        "debug" to debug,
+        "welcome" to welcome,
+        "getConfig" to getConfig
+    )
 
     fun findByString(feature: String) = featureMap[feature]
 }

src/main/kotlin/moe/kageru/kagebot/features/GetConfigFeature.kt

@@ -0,0 +1,13 @@
+package moe.kageru.kagebot.features
+
+import moe.kageru.kagebot.config.ConfigParser
+import org.javacord.api.event.message.MessageCreateEvent
+
+/**
+ * Simple message handler to send the current config file via message attachment.
+ */
+class GetConfigFeature : MessageFeature() {
+    override fun handleInternal(message: MessageCreateEvent) {
+        message.channel.sendMessage(ConfigParser.configFile)
+    }
+}

src/main/resources/config.toml

@@ -106,3 +106,7 @@ feature = "welcome"
 [[command]]
 trigger = "!help"
 feature = "help"
+
+[[command]]
+trigger = "!getConfig"
+feature = "getConfig"

src/test/kotlin/moe/kageru/kagebot/TestUtil.kt

@@ -16,6 +16,7 @@ import org.javacord.api.entity.message.embed.EmbedBuilder
 import org.javacord.api.entity.user.User
 import org.javacord.api.event.message.MessageCreateEvent
 import org.javacord.core.entity.message.embed.EmbedBuilderDelegateImpl
+import java.io.File
 import java.util.*
 
 object TestUtil {
@@ -23,6 +24,7 @@ object TestUtil {
         content: String,
         replies: MutableList<String> = mutableListOf(),
         replyEmbeds: MutableList<EmbedBuilder> = mutableListOf(),
+        files: MutableList<File> = mutableListOf(),
         isBot: Boolean = false
     ): MessageCreateEvent {
         return mockk {
@@ -30,6 +32,7 @@ object TestUtil {
             every { readableMessageContent } returns content
             every { channel.sendMessage(capture(replies)) } returns mockk()
             every { channel.sendMessage(capture(replyEmbeds)) } returns mockk()
+            every { channel.sendMessage(capture(files)) } returns mockk()
             every { message.canYouDelete() } returns true
             every { isPrivateMessage } returns false
             // We can’t use a nested mock here because other fields of messageAuthor might

src/test/kotlin/moe/kageru/kagebot/features/ConfigFeatureTest.kt

@@ -0,0 +1,24 @@
+package moe.kageru.kagebot.features
+
+import io.kotlintest.shouldBe
+import io.kotlintest.specs.ShouldSpec
+import moe.kageru.kagebot.Kagebot
+import moe.kageru.kagebot.TestUtil
+import moe.kageru.kagebot.TestUtil.mockMessage
+import moe.kageru.kagebot.TestUtil.withCommands
+import java.io.File
+
+class ConfigFeatureTest : ShouldSpec({
+    TestUtil.prepareTestEnvironment()
+    "getConfig should sent message with attachment" {
+        withCommands("""
+        [[command]]
+        trigger = "!getConfig"
+        feature = "getConfig"
+        """.trimIndent()) {
+            val calls = mutableListOf<File>()
+            Kagebot.processMessage(mockMessage("!getConfig", files = calls))
+            calls.size shouldBe 1
+        }
+    }
+})