import { db } from '$lib/server/db';
import { sql } from 'drizzle-orm';
import { json } from '@sveltejs/kit';
import type { RequestHandler } from './$types';

export const GET: RequestHandler = async ({ url }) => {
	const q = (url.searchParams.get('q') ?? '').trim().slice(0, 100);
	const dimension = url.searchParams.get('dimension') ?? 'item';
	const offset = Math.min(100_000, Math.max(0, Number(url.searchParams.get('offset') ?? 0) || 0));
	const limit = Math.min(1000, Math.max(1, Number(url.searchParams.get('limit') ?? 50) || 50));
	const pattern = `%${q.replaceAll('\\', '\\\\').replaceAll('%', '\\%').replaceAll('_', '\\_')}%`;
	if (dimension === 'item') {
		const rows = await db.execute(sql`SELECT id, name, market_hash_name, icon_url
			FROM cs_market_items WHERE name ILIKE ${pattern} ESCAPE '\'
			ORDER BY name, id LIMIT ${limit} OFFSET ${offset}`);
		return json({ results: rows });
	}
	if (!/^[a-z][a-z0-9_]*$/.test(dimension))
		return json({ error: 'Invalid dimension' }, { status: 400 });
	const rows = await db.execute(sql`SELECT value, count(*)::int AS items
		FROM cs_item_dimensions WHERE key = ${dimension} AND value ILIKE ${pattern} ESCAPE '\'
		GROUP BY value ORDER BY value LIMIT ${limit} OFFSET ${offset}`);
	return json({ results: rows });
};