Added embed templates and basic validation for channels

src/main/java/com/alttd/util/Util.java

@@ -1,7 +1,6 @@
 package com.alttd.util;
 
 import com.alttd.commandManager.CommandManager;
-import com.alttd.commandManager.DiscordCommand;
 import com.alttd.commandManager.ScopeInfo;
 import com.alttd.commandManager.SubCommand;
 import com.alttd.config.MessagesConfig;
@@ -10,15 +9,14 @@ import com.alttd.templates.Template;
 import net.dv8tion.jda.api.EmbedBuilder;
 import net.dv8tion.jda.api.JDA;
 import net.dv8tion.jda.api.entities.*;
-import net.dv8tion.jda.api.interactions.commands.Command;
 import net.dv8tion.jda.api.interactions.commands.OptionMapping;
 import net.dv8tion.jda.api.interactions.commands.SlashCommandInteraction;
 import net.dv8tion.jda.api.interactions.commands.build.SlashCommandData;
 import net.dv8tion.jda.api.requests.RestAction;
+import org.jetbrains.annotations.NotNull;
 
 import java.awt.*;
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.stream.Collectors;
@@ -74,6 +72,30 @@ public class Util {
                 .build();
     }
 
+    public static MessageEmbed genericErrorEmbed(String title, String desc) {
+        return new EmbedBuilder()
+                .setTitle(title)
+                .setDescription(desc)
+                .setColor(Color.RED)
+                .build();
+    }
+
+    public static MessageEmbed genericSuccessEmbed(String title, String desc) {
+        return new EmbedBuilder()
+                .setTitle(title)
+                .setDescription(desc)
+                .setColor(Color.GREEN)
+                .build();
+    }
+
+    public static MessageEmbed genericWaitingEmbed(String title, String desc) {
+        return new EmbedBuilder()
+                .setTitle(title)
+                .setDescription(desc)
+                .setColor(Color.BLUE)
+                .build();
+    }
+
     public static void registerCommand(CommandManager commandManager, JDA jda, SlashCommandData slashCommandData, String commandName) {
         for (ScopeInfo info : commandManager.getActiveLocations(commandName)) {
             switch (info.getScope()) {
@@ -82,7 +104,7 @@ public class Util {
                     Guild guildById = jda.getGuildById(info.getId());
                     if (guildById == null)
                     {
-                        Logger.warning("Tried to add command % to invalid guild %", commandName, String.valueOf(info.getId()));
+                        Logger.warning("Tried to add command % to invalid guild %.", commandName, String.valueOf(info.getId()));
                         continue;
                     }
                     guildById.updateCommands().addCommands(slashCommandData).queue(RestAction.getDefaultSuccess(), Util::handleFailure);
@@ -96,4 +118,38 @@ public class Util {
         for (SubCommand subCommand : subCommands)
             subCommandMap.put(subCommand.getName(), subCommand);
     }
+
+    public static boolean validateGuildMessageChannel(SlashCommandInteraction interaction, GuildMessageChannel channel, ChannelType channelType, @NotNull Member member) {
+        if (channel == null) {
+            interaction.replyEmbeds(Util.genericErrorEmbed("Error", "Unable to find the TextChannel."))
+                    .setEphemeral(true)
+                    .queue();
+            return false;
+        }
+        if (channelType != null && !channel.getType().equals(channelType)) {
+            interaction.replyEmbeds(Util.genericErrorEmbed("Error", "Please specify a " + channelType + " channel."))
+                    .setEphemeral(true)
+                    .queue();
+            return false;
+        }
+        if (!channel.canTalk()) {
+            interaction.replyEmbeds(Util.genericErrorEmbed("Error", "I can't talk in this channel."))
+                    .setEphemeral(true)
+                    .queue();
+        }
+        if (!channel.canTalk(member)) {
+            interaction.replyEmbeds(Util.genericErrorEmbed("Error", "You can't talk in this channel."))
+                    .setEphemeral(true)
+                    .queue();
+            return false;
+        }
+        return true;
+    }
+
+    public static EmbedBuilder getFirstEmbedBuilder(Message message) {
+        if (message.getEmbeds().isEmpty())
+            return null;
+        MessageEmbed messageEmbed = message.getEmbeds().get(0);
+        return new EmbedBuilder(messageEmbed);
+    }
 }