[Modals] Update modals to use classes (#25)

Co-authored-by: Cinder <cinder@e621.net>

src/modals/openTicketModal.ts

@@ -0,0 +1,31 @@
+import { Client, MessageFlags, ModalSubmitInteraction } from 'discord.js';
+import { Database } from '../shared/Database';
+import { Modal } from '../types';
+import { createPrivateHelpTicketThread } from '../utils';
+
+class OpenTicketModal implements Modal<Client> {
+  id = 'open-ticket-modal';
+
+  async execute(context: Client<boolean>, interaction: ModalSubmitInteraction): Promise<void> {
+    if (!interaction.inGuild()) return;
+    await interaction.deferReply({ flags: MessageFlags.Ephemeral });
+
+    try {
+      const guild = await context.guilds.fetch(interaction.guildId);
+      const member = await guild.members.fetch(interaction.user.id);
+
+      const settings = await Database.getOrCreateSettings(interaction.guildId);
+      if (!settings.private_help_role_id) throw new Error("`private_help_role_id` hasn't been configured. Please report this error to staff.");
+
+      const reason = interaction.fields.getTextInputValue('ticket-message');
+      const thread = await createPrivateHelpTicketThread(context, guild, member, reason);
+      if (!thread) throw new Error('Failed to create ticket. Please report this to a staff member.');
+
+      await interaction.editReply({ content: `Your ticket has been created: ${thread}` });
+    } catch (error: Error | any) {
+      await interaction.editReply({ content: error.message }).catch(() => {});
+    }
+  }
+}
+
+export default new OpenTicketModal();