import { readdir, readFile } from 'node:fs/promises';
import { fileURLToPath } from 'node:url';
import path from 'node:path';

const root = fileURLToPath(new URL('../src/', import.meta.url));
const failures = [];
async function visit(directory) {
    for (const entry of await readdir(directory, { withFileTypes: true })) {
        const file = path.join(directory, entry.name);
        if (entry.isDirectory()) await visit(file);
        else if (/\.(svelte|css)$/.test(entry.name) && entry.name !== 'tokens.css') {
            const source = await readFile(file, 'utf8');
            for (const match of source.matchAll(/font-size\s*:\s*[\d.]+px\b/g)) {
                const line = source.slice(0, match.index).split('\n').length;
                failures.push(
                    `${path.relative(process.cwd(), file)}:${line}: use a shared type token (12 px minimum): ${match[0]}`
                );
            }
        }
    }
}
await visit(root);
const tokens = await readFile(path.join(root, 'lib/ui/styles/tokens.css'), 'utf8');
for (const match of tokens.matchAll(
    /--text-(?:xs|sm|base|md|lg|xl|2xl|3xl|input):\s*([\d.]+)px/g
)) {
    if (Number(match[1]) < 12) failures.push(`Type tokens must be at least 12 px: ${match[0]}`);
}
if (failures.length) {
    console.error(failures.join('\n'));
    process.exitCode = 1;
} else console.log('UI styles: shared font sizes and 12 px minimum verified.');