[Buttons] Update buttons to use classes (#24)

src/buttons/closeTicket.ts

@@ -0,0 +1,38 @@
+import { ButtonInteraction, Client, MessageFlags, ChannelType } from 'discord.js';
+import { Button } from '../types';
+import { closeTicket } from '../utils';
+
+class CloseTicketButton implements Button<Client> {
+  id = 'close-ticket';
+
+  async execute(context: Client<boolean>, interaction: ButtonInteraction): Promise<void> {
+    if (!interaction.inGuild()) return;
+    await interaction.deferReply({ flags: MessageFlags.Ephemeral });
+
+    try {
+      const channel = await context.channels.fetch(interaction.channelId);
+
+      if (!channel) throw new Error("The interaction channel couldn't be fetched.");
+      if (!channel.isThread() || channel.type != ChannelType.PrivateThread) throw new Error('This interaction was not run in a ticket thread.');
+      if (!channel.isSendable()) throw new Error("I don't have permission to send messages in this channel.");
+
+      await interaction.editReply({ content: 'Closing, please wait...' });
+
+      await interaction.message.edit({
+        content: interaction.message.content,
+        components: []
+      });
+
+      if (!await closeTicket(context, channel, `This ticket has been closed by ${interaction.user}`)) {
+        await interaction.editReply({ content: 'An error occurred while trying to close this ticket.' });
+        return;
+      }
+
+      await interaction.editReply({ content: 'Ticket closed.' });
+    } catch (error: Error | any) {
+      await interaction.editReply({ content: error.message }).catch(() => {});
+    }
+  }
+}
+
+export default new CloseTicketButton();