"use strict";

const Path = require("path");
const Fs = require("fs-extra");
const SemVer = require("semver");

const ChangeFileDir = Path.join(__dirname, "../../changes");

///////////////////////////////////////////////////////////////////////////////////////////////////

module.exports = async function main(argv) {
	const out = new Output();
	let baseUrl = `https://github.com/be5invis/Iosevka/blob/v${argv.version}/doc`;
	await GenerateChangeList(argv, out);
	out.log(
		`<table>` +
			`<tr><td align="center"><h1>` +
			`<a href="${baseUrl}/PACKAGE-LIST.md">View package list</a>` +
			`</h1></td></tr>` +
			`<tr><td align="center">` +
			`<a href="${baseUrl}/packages-sha.txt">Package hashes (SHA-256)</a>` +
			`</td></tr>` +
			`</table>`
	);

	await Fs.ensureDir(Path.join(__dirname, `../../release-archives/`));
	await Fs.writeFile(argv.outputPath, out.buffer);
};

class Output {
	constructor() {
		this.buffer = "";
	}
	log(...s) {
		this.buffer += s.join("") + "\n";
	}
}

///////////////////////////////////////////////////////////////////////////////////////////////////
// Copy Markdown

async function CopyMarkdown(out, name) {
	const content = await Fs.readFile(
		Path.resolve(__dirname, `release-note-fragments/${name}`),
		"utf8"
	);
	out.log(content);
}

///////////////////////////////////////////////////////////////////////////////////////////////////
// CHANGE LIST

async function GenerateChangeList(argv, out) {
	const changeFiles = await Fs.readdir(ChangeFileDir);
	const fragments = new Map();
	for (const file of changeFiles) {
		const filePath = Path.join(ChangeFileDir, file);
		const fileParts = Path.parse(filePath);
		if (fileParts.ext !== ".md") continue;
		if (!SemVer.valid(fileParts.name) || SemVer.lt(argv.version, fileParts.name)) continue;
		fragments.set(fileParts.name, await Fs.readFile(filePath, "utf8"));
	}

	const sortedFragments = Array.from(fragments).sort((a, b) => SemVer.compare(b[0], a[0]));

	const latestMajor = SemVer.major(sortedFragments[0][0]);
	const latestMinor = SemVer.minor(sortedFragments[0][0]);

	for (const [version, notes] of sortedFragments) {
		const currentMajor = SemVer.major(version);
		const currentMinor = SemVer.minor(version);
		if (latestMajor !== currentMajor || latestMinor !== currentMinor) continue;
		out.log(``);
		out.log(`## Changes of version ${version}`);
		out.log(notes.trimEnd() + "\n");
	}
}