#!/usr/bin/env node
const fs = require("fs").promises;
const path = require("path");
let charmap,
	find,
	font,
	str = "",
	titles = false;

function usage() {
	console.log(`usage: sofancy [-f (font) | -t] string

 flags:
  -f|--font (font) : output in a single font
  -t|--titles      : display titles in output

 examples:
  sofancy -f wide aesthetics
ａｅｓｔｈｅｔｉｃｓ
  sofancy -tf neon llamas | sed 's/neon.* /txt: /'
txt: ᒪᒪᗩᗰᗩᔕ
  sofancy -t some string | fzf | xsel -i
  git commit -m "style(docs): $(sofancy -f bolditalic STYLIN)"
`);
	process.exit();
}
function reverse(s) {
	return (s === '') ? '' : reverse(s.substr(1)) + s.charAt(0);
}
function setArgs() {
	const { parseArgs } = require("node:util");
	const args = process.argv.slice(2);
	const options = {
		font: {
			type: "string",
			short: "f",
		},
		titles: {
			type: "boolean",
			short: "t",
		},
	};
	try {
		const { values, positionals } = parseArgs({
			args,
			options,
			allowPositionals: true,
		});
		font = values.font || false;
		find = !font ? /.*json$/ : new RegExp(`\\b${font}.json\\b`, "gi");
		titles = values.titles || false;
		str = (font == "upsidedown" || font == "mirrorflip")
			? reverse(positionals.join(" "))
			: positionals.join(" ") || usage();
	} catch (e) {
		usage();
	}
}
const walk = async (dir, filelist = []) => {
	const files = await fs.readdir(dir);

	for (const file of files) {
		const filepath = path.join(dir, file);
		const stat = await fs.stat(filepath);

		if (stat.isDirectory()) {
			filelist = await walk(filepath, filelist);
		} else {
			if (file.match(find)) {
				filelist.push(file);
				charmap = require(__dirname + `/fonts/${file}`);
				let title = titles ? file.replace(".json", "").padEnd(15) : "";
				console.log(
					title +
					str.replace(/./g, function(s) {
						if (s in charmap) {
							return charmap[s];
						} else if (s.toLowerCase() in charmap) {
							return charmap[s.toLowerCase()];
						} else if (s.toUpperCase() in charmap) {
							return charmap[s.toUpperCase()];
						} else {
							return s;
						}
					}) + " "
				);
			}
		}
	}
};
setArgs();
walk(__dirname + "/fonts");