/*
 * SPDX-License-Identifier: GPL-3.0
 * Vencord Desktop, a desktop app aiming to give you a snappier Discord Experience
 * Copyright (c) 2023 Vendicated and Vencord contributors
 */

import { existsSync, mkdirSync } from "fs";
import { join } from "path";

import { USER_AGENT, VENCORD_FILES_DIR } from "../constants";
import { downloadFile, simpleGet } from "./http";

const API_BASE = "https://api.github.com/repos/Vendicated/Vencord";

const FILES_TO_DOWNLOAD = ["vencordDesktopMain.js", "preload.js", "vencordDesktopRenderer.js", "renderer.css"];

export async function githubGet(endpoint: string) {
    return simpleGet(API_BASE + endpoint, {
        headers: {
            Accept: "application/vnd.github+json",
            "User-Agent": USER_AGENT
        }
    });
}

export async function downloadVencordFiles() {
    const release = await githubGet("/releases/latest");

    const data = JSON.parse(release.toString("utf-8"));
    const assets = data.assets as Array<{
        name: string;
        browser_download_url: string;
    }>;

    await Promise.all(
        assets
            .filter(({ name }) => FILES_TO_DOWNLOAD.some(f => name.startsWith(f)))
            .map(({ name, browser_download_url }) => downloadFile(browser_download_url, join(VENCORD_FILES_DIR, name)))
    );
}

export async function ensureVencordFiles() {
    if (existsSync(join(VENCORD_FILES_DIR, "vencordDesktopMain.js"))) return;
    mkdirSync(VENCORD_FILES_DIR, { recursive: true });

    await downloadVencordFiles();
}