#!/usr/bin/env node
// @ts-check
/**
 * @file
 * Replaces the SVG count milestone "Over <NUMBER> SVG icons..." located
 * at README every time the number of current icons is more than `updateRange`
 * more than the previous milestone.
 */

import fs from 'node:fs/promises';
import path from 'node:path';
import process from 'node:process';
import {getIconsData} from '../../sdk.mjs';

const regexMatcher = /Over\s(\d+)\s/;
const updateRange = 100;

const rootDirectory = path.resolve(import.meta.dirname, '..', '..');
const readmeFile = path.resolve(rootDirectory, 'README.md');

const readmeContent = await fs.readFile(readmeFile, 'utf8');

try {
	const match = regexMatcher.exec(readmeContent);
	if (match === null) {
		console.error(
			'Failed to obtain number of SVG icons of current milestone in README:',
			'No match found',
		);
		process.exit(1);
	} else {
		const overNIconsInReadme = Number.parseInt(match[1], 10);
		const iconsData = await getIconsData();
		const nIcons = iconsData.length;
		const nIconsRounded = Math.floor(nIcons / updateRange) * updateRange;

		if (overNIconsInReadme !== nIconsRounded) {
			const newContent = readmeContent.replace(
				regexMatcher,
				`Over ${nIconsRounded} `,
			);
			await fs.writeFile(readmeFile, newContent);
		}
	}
} catch (error) {
	console.error(
		'Failed to update number of SVG icons of current milestone in README:',
		error,
	);
	process.exit(1);
}
