Add the Ability to Read and Write Configuration Properties via Slash Commands

build.gradle

@@ -19,6 +19,7 @@ dependencies {
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.2'
 
     implementation 'net.dv8tion:JDA:4.3.0_309'
+//    implementation 'com.github.dv8fromtheworld:jda:feature~threads'
     implementation 'org.mongodb:mongodb-driver:3.12.10'
     implementation 'com.google.code.gson:gson:2.8.7'
     implementation 'org.yaml:snakeyaml:1.29'

src/main/java/com/javadiscord/javabot/commands/configuation/Config.java

@@ -0,0 +1,16 @@
+package com.javadiscord.javabot.commands.configuation;
+
+import com.javadiscord.javabot.commands.DelegatingCommandHandler;
+
+/**
+ * The main command for interacting with the bot's configuration at runtime via
+ * slash commands.
+ */
+public class Config extends DelegatingCommandHandler {
+    public Config() {
+        addSubcommand("list", new ListSubcommand());
+        addSubcommand("get", new GetSubcommand());
+        addSubcommand("set", new SetSubcommand());
+    }
+}
+

src/main/java/com/javadiscord/javabot/commands/configuation/GetSubcommand.java

@@ -0,0 +1,25 @@
+package com.javadiscord.javabot.commands.configuation;
+
+import com.javadiscord.javabot.Bot;
+import com.javadiscord.javabot.commands.Responses;
+import com.javadiscord.javabot.commands.SlashCommandHandler;
+import com.javadiscord.javabot.properties.config.UnknownPropertyException;
+import net.dv8tion.jda.api.events.interaction.SlashCommandEvent;
+import net.dv8tion.jda.api.requests.restaction.interactions.ReplyAction;
+
+public class GetSubcommand implements SlashCommandHandler {
+	@Override
+	public ReplyAction handle(SlashCommandEvent event) {
+		var propertyOption = event.getOption("property");
+		if (propertyOption == null) {
+			return Responses.warning(event, "Missing required property argument.");
+		}
+		String property = propertyOption.getAsString().trim();
+		try {
+			Object value = Bot.config.get(event.getGuild()).resolve(property);
+			return Responses.info(event, "Configuration Property", String.format("The value of the property `%s` is `%s`.", property, value));
+		} catch (UnknownPropertyException e) {
+			return Responses.warning(event, "Unknown Property", "The property `" + property + "` could not be found.");
+		}
+	}
+}

src/main/java/com/javadiscord/javabot/commands/configuation/ListSubcommand.java

@@ -0,0 +1,47 @@
+package com.javadiscord.javabot.commands.configuation;
+
+import com.javadiscord.javabot.Bot;
+import com.javadiscord.javabot.commands.Responses;
+import com.javadiscord.javabot.commands.SlashCommandHandler;
+import com.javadiscord.javabot.properties.config.GuildConfig;
+import com.javadiscord.javabot.properties.config.ReflectionUtils;
+import com.javadiscord.javabot.properties.config.UnknownPropertyException;
+import net.dv8tion.jda.api.events.interaction.SlashCommandEvent;
+import net.dv8tion.jda.api.requests.restaction.interactions.ReplyAction;
+
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * Shows a list of all known configuration properties, their type, and their
+ * current value.
+ */
+public class ListSubcommand implements SlashCommandHandler {
+	@Override
+	public ReplyAction handle(SlashCommandEvent event) {
+		try {
+			var results = ReflectionUtils.getFields(null, GuildConfig.class);
+			String msg = results.entrySet().stream()
+					.sorted(Map.Entry.comparingByKey())
+					.map(entry -> {
+						Object propertyValue = null;
+						try {
+							propertyValue = Bot.config.get(event.getGuild()).resolve(entry.getKey());
+						} catch (UnknownPropertyException e) {
+							e.printStackTrace();
+						}
+						return String.format(
+								"**%s** `%s` = `%s`",
+								entry.getValue().getSimpleName(),
+								entry.getKey(),
+								propertyValue
+						);
+					})
+					.collect(Collectors.joining("\n"));
+			return Responses.info(event, "Configuration Properties", msg);
+		} catch (IllegalAccessException e) {
+			e.printStackTrace();
+			return Responses.error(event, e.getMessage());
+		}
+	}
+}

src/main/java/com/javadiscord/javabot/commands/configuation/SetSubcommand.java

@@ -0,0 +1,27 @@
+package com.javadiscord.javabot.commands.configuation;
+
+import com.javadiscord.javabot.Bot;
+import com.javadiscord.javabot.commands.Responses;
+import com.javadiscord.javabot.commands.SlashCommandHandler;
+import com.javadiscord.javabot.properties.config.UnknownPropertyException;
+import net.dv8tion.jda.api.events.interaction.SlashCommandEvent;
+import net.dv8tion.jda.api.requests.restaction.interactions.ReplyAction;
+
+public class SetSubcommand implements SlashCommandHandler {
+	@Override
+	public ReplyAction handle(SlashCommandEvent event) {
+		var propertyOption = event.getOption("property");
+		var valueOption = event.getOption("value");
+		if (propertyOption == null || valueOption == null) {
+			return Responses.warning(event, "Missing required arguments.");
+		}
+		String property = propertyOption.getAsString().trim();
+		String valueString = valueOption.getAsString().trim();
+		try {
+			Bot.config.get(event.getGuild()).set(property, valueString);
+			return Responses.success(event, "Configuration Updated", String.format("The property `%s` has been set to `%s`.", property, valueString));
+		} catch (UnknownPropertyException e) {
+			return Responses.warning(event, "Unknown Property", "The property `" + property + "` could not be found.");
+		}
+	}
+}