/*
 * Vencord, a Discord client mod
 * Copyright (c) 2024 Vendicated and contributors
 * SPDX-License-Identifier: GPL-3.0-or-later
 */

import { exec, spawn } from "child_process";
import { BrowserView, BrowserWindow, dialog, shell } from "electron";
import { existsSync, readdirSync, readFileSync } from "fs";
import { rm } from "fs/promises";
import { join } from "path";

// @ts-ignore fuck off
import pluginValidateContent from "./pluginValidate.txt"; // i would use HTML but esbuild is being whiny

const PLUGIN_META_REGEX = /export default definePlugin\((?:\s|\/(?:\/|\*).*)*{\s*(?:\s|\/(?:\/|\*).*)*name:\s*(?:"|'|`)(.*)(?:"|'|`)(?:\s|\/(?:\/|\*).*)*,(?:\s|\/(?:\/|\*).*)*(?:\s|\/(?:\/|\*).*)*description:\s*(?:"|'|`)(.*)(?:"|'|`)(?:\s|\/(?:\/|\*).*)*/;
const CLONE_LINK_REGEX = /https:\/\/((?:git(?:hub|lab)\.com|git\.(?:[a-zA-Z0-9]|\.)+|codeberg\.org))\/(?!user-attachments)((?:[a-zA-Z0-9]|-)+)\/((?:[a-zA-Z0-9]|-)+)(?:\.git)?(?:\/)?/;

export async function initPluginInstall(_, link: string, source: string, owner: string, repo: string): Promise<string> {
    // eslint-disable-next-line
    return new Promise(async (resolve, reject) => {
        const verifiedRegex = link.match(CLONE_LINK_REGEX)!;
        if (verifiedRegex.length !== 4 || verifiedRegex[0] !== link || verifiedRegex[1] !== source || verifiedRegex[2] !== owner || verifiedRegex[3] !== repo) return reject("Invalid link");

        // Ask for clone
        const cloneDialog = await dialog.showMessageBox({
            title: "Clone userplugin",
            message: `You are about to clone a userplugin from ${source}.`,
            type: "question",
            detail: `The repository name is "${repo}" and it is owned by "${owner}".\nThe repository URL is ${link}\n\n(If you did not request this intentionally, choose Cancel)`,
            buttons: ["Cancel", "Clone repository and continue install", "Open repository in browser"]
        });
        switch (cloneDialog.response) {
            case 0: {
                return reject("Rejected by user");
            }
            case 1: {
                await cloneRepo(link, repo);
                break;
            }
            case 2: {
                await shell.openExternal(link);
                return reject("silentStop");
            }
        }

        // Get plugin meta
        const meta = await getPluginMeta(join(__dirname, "..", "src", "userplugins", repo));

        // Review plugin
        const win = new BrowserWindow({
            maximizable: false,
            minimizable: false,
            width: 560,
            height: meta.usesNative || meta.usesPreSend ? 650 : 360,
            resizable: false,
            webPreferences: {
                devTools: true
            },
            title: "Review userplugin",
            modal: true,
            parent: BrowserWindow.getAllWindows()[0],
            show: false,
            autoHideMenuBar: true
        });
        const reView /* haha got it */ = new BrowserView({
            webPreferences: {
                devTools: true,
                nodeIntegration: true
            }
        });
        win.setBrowserView(reView);
        win.addBrowserView(reView);
        win.setTopBrowserView(reView);
        win.loadURL(generateReviewPluginContent(meta));
        win.on("page-title-updated", async e => {
            switch (win.webContents.getTitle() as "abortInstall" | "reviewCode" | "install") {
                case "abortInstall": {
                    win.close();
                    await rm(join(__dirname, "..", "src", "userplugins", repo), {
                        recursive: true
                    });
                    return reject("Rejected by user");
                }
                case "install": {
                    win.close();
                    await build();
                    resolve(meta.name);
                    break;
                }
            }
        });
        win.show();
    });
}

async function build(): Promise<any> {
    return new Promise((resolve, reject) => {
        const proc = exec("pnpm build", {
            cwd: __dirname
        });
        proc.once("close", async () => {
            if (proc.exitCode !== 0) {
                reject("Failed to build");
            }
            resolve("Success");
        });
    });
}

async function getPluginMeta(path: string): Promise<{
    name: string;
    description: string;
    usesPreSend: boolean;
    usesNative: boolean;
}> {
    return new Promise((resolve, reject) => {
        const files = readdirSync(path);
        let fileToRead: "index.ts" | "index.tsx" | "index.js" | "index.jsx" | undefined;
        files.forEach(f => {
            if (f === "index.ts") fileToRead = "index.ts";
            if (f === "index.tsx") fileToRead = "index.tsx";
            if (f === "index.js") fileToRead = "index.js";
            if (f === "index.jsx") fileToRead = "index.jsx";
        });
        if (!fileToRead) reject("Invalid plugin");

        const file = readFileSync(`${path}/${fileToRead}`, "utf8");
        const rawMeta = file.match(PLUGIN_META_REGEX);
        resolve({
            name: rawMeta![1],
            description: rawMeta![2],
            usesPreSend: file.includes("PreSendListener"),
            usesNative: files.includes("native.ts") || files.includes("native.js")
        });
    });
}

async function cloneRepo(link: string, repo: string): Promise<void> {
    return new Promise((resolve, reject) => {
        const proc = spawn("git", ["clone", link], {
            cwd: join(__dirname, "..", "src", "userplugins")
        });
        proc.once("close", async () => {
            if (proc.exitCode !== 0) {
                if (!existsSync(join(__dirname, "..", "src", "userplugins", repo)))
                    return reject("Failed to clone");
                const deleteReqDialog = await dialog.showMessageBox({
                    title: "Error",
                    message: "Plugin already exists",
                    type: "error",
                    detail: `The plugin that you tried to clone already exists at ${join(__dirname, "..", "src", "userplugins")}.\nWould you like to reclone it? Only do this if you want to reinstall or update the plugin.`,
                    buttons: ["No", "Yes"]
                });
                if (deleteReqDialog.response !== 1) return reject("User rejected");
                await rm(join(__dirname, "..", "src", "userplugins", repo), {
                    recursive: true
                });
                await cloneRepo(link, repo);
            }
            resolve();
        });
    });
}

function generateReviewPluginContent(meta: {
    name: string;
    description: string;
    usesPreSend: boolean;
    usesNative: boolean;
}): string {
    const template = pluginValidateContent.replace("%PLUGINNAME%", meta.name.replaceAll("<", "&lt;")).replace("%PLUGINDESC%", meta.description.replaceAll("<", "&lt;")).replace("%WARNINGHIDER%", !meta.usesNative && !meta.usesPreSend ? "[data-useless=\"warning\"] { display: none !important; }" : "").replace("%NATIVETSHIDER%", meta.usesNative ? "" : "#native-ts-warning { display: none !important; }").replace("%PRESENDHIDER%", meta.usesPreSend ? "" : "#pre-send-warning { display: none !important; }");
    const buf = Buffer.from(template).toString("base64");
    return `data:text/html;base64,${buf}`;
}