push progress to gh 3

src/utils/command.ts

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+import { GuildMember, Permissions } from 'discord.js';
+
+import { Command, FinalizedCommand } from '../object/command/Command'
+import { CommandFinalizationError } from '../errors.js';
+import { Pogbot } from '../Pogbot.js';
+
+/**
+ * Finalize a command by adding permissions and restrictions.
+ * Creates an object that can be accepted by Discord
+ */
+export function finalize(initial: Command): FinalizedCommand {
+	const cmd: FinalizedCommand = initial as FinalizedCommand;
+
+	const { isAdminOnly, isGuildOnly } = cmd.restrictions;
+	const basicInfo = {
+		name: cmd.name,
+		description: cmd.description
+	};
+
+	cmd._json = { ...basicInfo, ...cmd.additionalData }
+
+	cmd._json.dmPermission = !isGuildOnly ?? true
+
+	const permissions: bigint[] = [Permissions.FLAGS.USE_APPLICATION_COMMANDS];
+
+	if (isAdminOnly) {
+		if (!isGuildOnly) {
+				throw new CommandFinalizationError(cmd, 'Cannot require admin if not limited to guilds');
+		}
+		permissions.push(Permissions.FLAGS.ADMINISTRATOR, Permissions.FLAGS.MANAGE_GUILD);
+	}
+
+	cmd._json.defaultMemberPermissions = permissions;
+
+	return cmd;
+}
+
+/**
+ * Create a slash mention from a command's name and Discord assigned ID.
+ */
+export function mention(name: string): string {
+	// Splitting the command name helps support subcommands without having to add more code.
+	return `</${name}:${Pogbot.instance.commands.get(name.split(' ')[0])?._id}>`;
+}
+
+/**
+ * Check if a member has permission to manage the guild or has the administrator permission.
+ */
+export function canManage(member: GuildMember): boolean {
+	return member.permissions.has(Permissions.FLAGS.MANAGE_GUILD, true);
+}