Move command handling out of constructor, add coin reflip command

Having heavy code run in a constructor is bad practice. We made separate methods for command handling.

src/main/java/wtf/beatrice/hidekobot/commands/slash/CoinFlipCommand.java

@@ -1,13 +1,20 @@
 package wtf.beatrice.hidekobot.commands.slash;
 
+import net.dv8tion.jda.api.entities.emoji.Emoji;
+import net.dv8tion.jda.api.events.interaction.GenericInteractionCreateEvent;
 import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
+import net.dv8tion.jda.api.events.interaction.component.ButtonInteractionEvent;
+import net.dv8tion.jda.api.interactions.components.ActionRow;
+import net.dv8tion.jda.api.interactions.components.buttons.Button;
 import org.jetbrains.annotations.NotNull;
 import wtf.beatrice.hidekobot.utils.RandomUtil;
 
+import java.util.List;
+
 public class CoinFlipCommand
 {
 
-    public CoinFlipCommand(@NotNull SlashCommandInteractionEvent event)
+    public void runSlashCommand(@NotNull SlashCommandInteractionEvent event)
     {
         int rand = RandomUtil.getRandomNumber(0, 1);
         String msg;
@@ -19,6 +26,32 @@ public class CoinFlipCommand
             msg = "It's **Tails**! :coin:";
         }
 
-        event.reply(msg).queue();
+        event.reply(msg)
+                .addActionRow(Button.primary("reflip", "Flip again")
+                        .withEmoji(Emoji.fromFormatted("\uD83E\uDE99")) // coin emoji
+                ).queue();
     }
+
+    public void buttonReflip(ButtonInteractionEvent event)
+    {
+        List<ActionRow> actionRows = event.getMessage().getActionRows();
+        actionRows.set(0, actionRows.get(0).asDisabled());
+        event.editComponents(actionRows).queue();
+
+        int rand = RandomUtil.getRandomNumber(0, 1);
+        String msg;
+
+        if(rand == 1)
+        {
+            msg = ":coin: It's **Heads**!";
+        } else {
+            msg = "It's **Tails**! :coin:";
+        }
+
+        event.getHook().sendMessage(msg)
+                .addActionRow(Button.primary("reflip", "Flip again")
+                        .withEmoji(Emoji.fromFormatted("\uD83E\uDE99")) // coin emoji
+                ).queue();
+    }
+
 }