(rewrite): Began organising commands and polished /name-sync

src/commands/utilities/name-sync.ts

@@ -0,0 +1,62 @@
+import { Database } from '../../shared/Database';
+import { E621User } from '../../types';
+import { CreateDefaultEmbed, getE621User, SetSeverity } from '../../utils';
+
+// External Imports
+import { Command, CommandBuilder, CommandClient, CommandInteraction, Constants, Member, SlashCommand } from 'athena-prime';
+
+// ---------------
+
+async function fetchUser(member: Member, id: number | null): Promise<E621User | null> {
+  const syncedIds = await Database.getE621Ids(member.id);
+
+  if (!id || !syncedIds.includes(id))
+    return await getE621User(syncedIds[0]);
+  else
+    return await getE621User(id);
+}
+
+@SlashCommand(
+  new CommandBuilder('name-sync', 'Sync your Discord username with your e621 username.')
+    .setIntegrationTypes(Constants.ApplicationIntegrationType.GuildInstall)
+    .setContexts(Constants.InteractionContextType.Guild)
+    .setCommandType(Constants.ApplicationCommandType.ChatInput)
+    .addNumberOption({ name: 'id', description: 'The ID of the user to sync your name to.', required: false, max_value: 16 })
+)
+class NameSyncCommand extends Command<CommandClient> {
+  cooldown = 60;
+
+  async handleCommand(context: CommandClient<any, any>, interaction: CommandInteraction, data: any) {
+    if (!interaction.inGuild()) return;
+    await interaction.defer();
+
+    const id = interaction.getNumber('id');
+    const user = await fetchUser(interaction.member, id);
+
+    if (!user) {
+      await interaction.createMessage({
+        embeds: [{
+          ...CreateDefaultEmbed(context),
+          ...SetSeverity('error'),
+
+          description: 'I was unable to get a user entry for your account or provided id. Please try again, or contact an administrator.'
+        }]
+      });
+
+      return;
+    }
+
+    await interaction.member.edit({ nick: user.name }, 'Member requested a name-sync.');
+
+    await interaction.createMessage({
+      embeds: [{
+        ...CreateDefaultEmbed(context),
+        ...SetSeverity('success'),
+
+        description: `Successfully updated your display name. Hello \`${user.name}\`!`
+      }]
+    });
+  }
+}
+
+export default new NameSyncCommand('name-sync');