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#!/usr/bin/node
/*
 * Vencord, a modification for Discord's desktop app
 * Copyright (c) 2022 Vendicated and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

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

console.log("\nVencord Uninstaller\n");

if (!fs.existsSync(path.join(process.cwd(), "node_modules"))) {
    console.log("You need to install dependencies first. Run:", "pnpm install --frozen-lockfile");
    process.exit(1);
}

const {
    getMenuItem,
    getWindowsDirs,
    getDarwinDirs,
    getLinuxDirs,
    pathToBranch,
} = require("./common");

switch (process.platform) {
    case "win32":
        uninstall(getWindowsDirs());
        break;
    case "darwin":
        uninstall(getDarwinDirs());
        break;
    case "linux":
        uninstall(getLinuxDirs());
        break;
    default:
        console.log("Unknown OS");
        break;
}

async function uninstall(installations) {
    const selected = await getMenuItem(installations);

    const useNewMethod = pathToBranch(selected.branch) !== "stable";

    for (const version of selected.versions) {
        const dir = useNewMethod ? path.join(version.path, "..") : version.path;

        // Check if we have write perms to the install directory...
        try {
            fs.accessSync(selected.location, fs.constants.W_OK);
        } catch (e) {
            console.error("No write access to", selected.location);
            console.error(
                "Make sure Discord isn't running. If that doesn't work,",
                "try running this script as an administrator:",
                "sudo pnpm uninject"
            );
            process.exit(1);
        }
        if (useNewMethod) {
            if (!fs.existsSync(path.join(dir, "_app.asar"))) {
                console.error(
                    "Original app.asar (_app.asar) doesn't exist.",
                    "Is your Discord installation corrupt? Try reinstalling Discord."
                );
                process.exit(1);
            }
            if (fs.existsSync(path.join(dir, "app.asar"))) {
                try {
                    fs.rmSync(path.join(dir, "app.asar"), { force: true, recursive: true });
                } catch (err) {
                    console.error("Failed to delete app.asar folder");
                    throw err;
                }
            }
            try {
                fs.renameSync(
                    path.join(dir, "_app.asar"),
                    path.join(dir, "app.asar")
                );
            } catch (err) {
                console.error("Failed to rename _app.asar to app.asar");
                throw err;
            }
            console.log(
                "Successfully unpatched",
                version.name
                    ? `${selected.branch} ${version.name}`
                    : selected.branch
            );
            return;
        }
        if (fs.existsSync(dir)) {
            fs.rmSync(dir, { recursive: true });
        }
        console.log(
            "Successfully unpatched",
            version.name
                ? `${selected.branch} ${version.name}`
                : selected.branch
        );
    }
}