utils.js

const fs = require("fs");
const path = require("path");

function load_env() {
	try {
		// Read the .env file content
		const envFilePath = path.resolve(__dirname, ".env");
		const envFileContent = fs.readFileSync(envFilePath, { encoding: "utf-8" });

		// Split the content into lines
		const envVariables = envFileContent.split("\n");

		// Iterate over each line
		envVariables.forEach((line) => {
			// Ignore lines that are empty or start with a hash (#)
			if (line && !line.startsWith("#")) {
				// Split line by first occurrence of "=" to separate key and value
				const [key, ...values] = line.split("=");
				const value = values.join("=").trim(); // Re-join in case value contains "="
				// Set the environment variable if key is not empty
				if (key) {
					process.env[key.trim()] = value;
				}
			}
		});
	} catch (e) {
		console.error("Failed to load .env file", e);
	}
}

function truncate_text(text, words) {
	return text.split(" ").slice(0, words).join(" ") + "...";
}

function replace_placeholders(template, placeholders) {
	return Object.keys(placeholders).reduce((html, key) => {
		const placeholder = `{{{${key}}}}`;
		return html.replaceAll(placeholder, placeholders[key]);
	}, template);
}

async function clean_public() {
	try {
		const files = await fs.promises.readdir("./public");
		for (const file of files) {
			const file_path = path.join("./public", file);
			const stat = await fs.promises.stat(file_path);

			if (stat.isFile() && path.extname(file) === ".html") {
				await fs.promises.unlink(file_path);
			}
		}
	} catch (error) {
		console.error("Error deleting .html files:", error);
	}
}

async function read_file(file_path) {
	try {
		const content = await fs.promises.readFile(file_path, "utf8");
		return content;
	} catch (e) {
		throw new Error(`Failed to read template: ${e.message}`);
	}
}

async function write_file(file_path, content) {
	try {
		await fs.promises.writeFile(file_path, content);
		console.log(`"${file_path}" was created.`);
	} catch (e) {
		throw new Error(`Failed to write output: ${e.message}`);
	}
}

function format_date(str) {
	const date = new Date(str);
	const days = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
	const months = [
		"Jan",
		"Feb",
		"Mar",
		"Apr",
		"May",
		"Jun",
		"Jul",
		"Aug",
		"Sep",
		"Oct",
		"Nov",
		"Dec",
	];

	const day_of_week = days[date.getDay()];
	const month = months[date.getMonth()];
	const day_of_month = date.getDate();
	const year = date.getFullYear();
	const hours = date.getHours().toString().padStart(2, "0");
	const minutes = date.getMinutes().toString().padStart(2, "0");

	return `${day_of_week} ${month} ${day_of_month} ${year} at ${hours}:${minutes}`;
}

function slugify(str) {
	str = str.replace(/^\s+|\s+$/g, "");

	str = str.toLowerCase();

	str = str.replace("'", "");

	const from =
		"ÁÄÂÀÃÅČÇĆĎÉĚËÈÊẼĔȆÍÌÎÏŇÑÓÖÒÔÕØŘŔŠŤÚŮÜÙÛÝŸŽáäâàãåčçćďéěëèêẽĕȇíìîïňñóöòôõøðřŕšťúůüùûýÿžþÞĐđßÆa·/_,:;";
	const to =
		"AAAAAACCCDEEEEEEEEIIIINNOOOOOORRSTUUUUUYYZaaaaaacccdeeeeeeeeiiiinnooooooorrstuuuuuyyzbBDdBAa------";
	for (let i = 0, l = from.length; i < l; i++) {
		str = str.replace(new RegExp(from.charAt(i), "g"), to.charAt(i));
	}

	str = str
		.replace(/[^a-z0-9 -]/g, "")
		.replace(/\s+/g, "-")
		.replace(/-+/g, "-")
		.replace(/^-+|-+$/g, "");

	return str;
}

module.exports = {
	load_env,
	clean_public,
	truncate_text,
	replace_placeholders,
	read_file,
	write_file,
	format_date,
	slugify,
};