Implement basic ban command

src/main/java/wtf/beatrice/hidekobot/commands/message/BanCommand.java

@@ -0,0 +1,68 @@
+package wtf.beatrice.hidekobot.commands.message;
+
+import net.dv8tion.jda.api.EmbedBuilder;
+import net.dv8tion.jda.api.Permission;
+import net.dv8tion.jda.api.entities.IMentionable;
+import net.dv8tion.jda.api.entities.Mentions;
+import net.dv8tion.jda.api.entities.User;
+import net.dv8tion.jda.api.entities.channel.concrete.TextChannel;
+import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
+import net.dv8tion.jda.api.requests.restaction.AuditableRestAction;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import wtf.beatrice.hidekobot.Cache;
+import wtf.beatrice.hidekobot.HidekoBot;
+import wtf.beatrice.hidekobot.commands.base.UserPunishment;
+import wtf.beatrice.hidekobot.objects.MessageResponse;
+import wtf.beatrice.hidekobot.objects.commands.CommandCategory;
+import wtf.beatrice.hidekobot.objects.commands.MessageCommand;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+public class BanCommand implements MessageCommand
+{
+
+    @Override
+    public LinkedList<String> getCommandLabels() {
+        return new LinkedList<>(Collections.singletonList("ban"));
+    }
+
+    @Nullable
+    @Override
+    public List<Permission> getPermissions() {
+        return new ArrayList<Permission>(Collections.singletonList(Permission.BAN_MEMBERS));
+    }
+
+    @Override
+    public boolean passRawArgs() {
+        return false;
+    }
+
+    @NotNull
+    @Override
+    public CommandCategory getCategory() {
+        return CommandCategory.MODERATION;
+    }
+
+    @NotNull
+    @Override
+    public String getDescription() {
+        return "Ban the mentioned user.";
+    }
+
+    @Nullable
+    @Override
+    public String getUsage() {
+        return "<mentioned user> [reason]";
+    }
+
+    @Override
+    public void runCommand(MessageReceivedEvent event, String label, String[] args)
+    {
+        UserPunishment.handle(event, args, UserPunishment.PunishmentType.BAN);
+    }
+}