feat: Add RegEx filter commands

Author: PartMan7

src/i18n/english.ts

@@ -18,6 +18,7 @@ export default {
 	TOO_LATE: 'Too late!',
 	USER_NOT_FOUND: 'User not found!',
 	WRONG_ROOM: 'Wrong room.',
+	INVALID_ARGUMENTS: 'Invalid number of arguments.',
 
 	GAME: {
 		ALREADY_JOINED: 'You have already joined this game.',

src/ps/commands/filter.tsx

@@ -0,0 +1,93 @@
+import { abilities, items, moves, pokedex } from 'ps-client/data';
+
+import { toId } from '@/tools';
+import { ChatError } from '@/utils/chatError';
+
+import type { ToTranslate } from '@/i18n/types';
+import type { PSCommand } from '@/types/chat';
+import type { ReactElement } from 'react';
+
+function List({ items }: { items: string[] }): ReactElement {
+	return (
+		<div className="infobox">
+			<details>
+				<summary>{items.length} Match(es)</summary>
+				<hr />
+				{items.space(<br />)}
+			</details>
+		</div>
+	);
+}
+
+const filterTypes: {
+	name: string;
+	initial: string;
+	aliases: string[];
+	entries: { id: string; name: string }[];
+}[] = [
+	{
+		name: 'abilities',
+		initial: 'a',
+		aliases: ['abilities', 'ability'],
+		sources: [abilities],
+	},
+	{
+		name: 'items',
+		initial: 'i',
+		aliases: ['items', 'item'],
+
+		sources: [items],
+	},
+	{
+		name: 'moves',
+		initial: 'm',
+		aliases: ['moves', 'move'],
+		sources: [moves],
+	},
+	{
+		name: 'pokedex',
+		initial: 'n',
+		aliases: ['dex', 'names', 'name'],
+		sources: [pokedex],
+	},
+
+	{
+		name: 'all',
+		initial: '',
+		aliases: ['all'],
+		sources: [abilities, items, moves, pokedex],
+	},
+].map(type => ({
+	...type,
+	entries: type.sources.flatMap(source => {
+		return Object.values(source).map(entry => ({
+			name: entry.name,
+			id: 'id' in entry ? entry.id : toId(entry.name),
+		}));
+	}),
+}));
+
+export const command: PSCommand[] = Object.values(filterTypes).map(({ initial, aliases, entries }) => ({
+	name: `filter${aliases[0]}`,
+	help: 'Filter matching entries (by RegEx). See https://regexone.com for help.',
+	syntax: 'CMD [pattern]',
+	flags: { pmOnly: true },
+	aliases: [...aliases.slice(1), `f${initial}`],
+	async run({ message, $T, arg }) {
+		const basePattern = arg.trim();
+		if (!basePattern) throw new ChatError($T('INVALID_ARGUMENTS'));
+		let pattern: RegExp;
+		try {
+			pattern = new RegExp(basePattern, 'i');
+		} catch {
+			throw new ChatError('Invalid regular expression. Try https://regex101.com for help.' as ToTranslate);
+		}
+
+		const matchedEntries = entries
+			.filter(entry => pattern.test(entry.id))
+			.map(entry => entry.name)
+			.sort();
+
+		message.replyHTML(matchedEntries.length > 0 ? <List items={matchedEntries} /> : 'Results: 0');
+	},
+}));