#!/usr/bin/env node
const MSE = require("mse-translator");
const https = require("https");
const fs = require("fs");
const archiver = require("archiver");

var argv = require("yargs/yargs")(process.argv.slice(2))
    .usage("\nMSE Minecraft language-pack generator \n\nUsage: $0 [options]")
    .help("help")
    .alias("help", "h")
    .version("version", "1.0.1")
    .alias("version", "V")
    .options({
        descriptivefile: {
            alias: "f",
            description: 'descriptive output E.g. "en_gb-v1.19.1-en_MSE"',
            requiresArg: false,
            required: false,
            type: "boolean",
        },
        lang: {
            alias: "l",
            description: "<language> base language for pack generation",
            requiresArg: true,
            required: false,
            type: "string",
        },
        // TODO: version: {
        //     alias: "v",
        //     description: "<version> base version for pack generation",
        //     requiresArg: true,
        //     required: false,
        //     type: "string",
        // },
        manifest: {
            alias: "m",
            description: "<url> custom manifest endpoint",
            requiresArg: true,
            required: false,
            type: "string",
        },
        resources: {
            alias: "r",
            description: "<url> custom resources endpoint",
            requiresArg: true,
            required: false,
            type: "string",
        },
    })
    .parse();

const urlReq = function (reqUrl, options, cb) {
    if (typeof options === "function") {
        cb = options;
        options = {};
    } // incase no options passed in
    https
        .get(reqUrl, (res) => {
            let body = "";
            res.on("data", (chunk) => {
                body += chunk;
            });
            res.on("end", () => {
                try {
                    cb(body, res);
                } catch (error) {
                    console.error(error.message);
                }
            });
        })
        .on("error", (error) => {
            console.error(error.message);
        });
};

let piston =
    argv.manifest ||
    "https://piston-meta.mojang.com/mc/game/version_manifest_v2.json";

urlReq(piston, function (body, res) {
    json = JSON.parse(body);
    let version = json.versions[0].id; // latest version
    let resources =
        argv.resources || "https://resources.download.minecraft.net/";
    let baselang = argv.lang || "en_gb";

    let filename =
        (argv.descriptivefile && `${baselang}-v${version}-en_MSE`) || // descriptive file name
        "Maoist-Standard-English"; // default

    let mcmeta_template = [
        {
            text: `§cen_MSE§r\n`,
        },
        {
            text: `§8(§f${baselang}§8)-<§f${version}§8>`,
        },
    ];

    console.log(`Using base language "${baselang}" from version (${version})`);

    urlReq(json.versions[1].url, function (body, res) {
        json = JSON.parse(body);
        urlReq(json.assetIndex.url, function (body, res) {
            json = JSON.parse(body);
            hash = json.objects[`minecraft/lang/${baselang}.json`].hash;
            urlReq(
                resources + `${hash.substring(0, 2)}/${hash}`,
                function (body, res) {
                    pack = JSON.parse(body);
                    var totals = {
                        total: Object.keys(pack).length,
                        translated: 0,
                    };
                    console.log(`Translating ${totals.total} strings`);
                    Object.keys(pack).forEach(function (key) {
                        var translated = MSE.translate(
                            pack[key]
                                .replace(/\%s/gi, "%_") //mc patch
                                .replace(/\$s/gi, "$_"),
                        )
                            .replace(/\%_/gi, "%s") //mc patch back
                            .replace(/\$_/gi, "$s");
                        if (translated != pack[key]) {
                            totals.translated = totals.translated + 1;
                        }
                        pack[key] = translated;
                    });
                    console.log(
                        `Translated ${totals.translated} out of ${totals.total} strings`,
                    );

                    var mcmeta = __dirname + "/template/pack.mcmeta";
                    var mcmeta_data = JSON.parse(fs.readFileSync(mcmeta));
                    mcmeta_data.pack.description = mcmeta_template;

                    fs.writeFileSync(mcmeta, JSON.stringify(mcmeta_data));
                    fs.writeFile(
                        __dirname +
                            "/template/assets/minecraft/lang/en_mse.json",
                        JSON.stringify(pack, null, 4),
                        "utf8",
                        function (err) {
                            if (err) throw err;
                            console.log(
                                "en_mse.json generated, creating pack and compressing.",
                            );
                            const output = fs.createWriteStream(
                                __dirname + `/${filename}.zip`,
                            );
                            const archive = archiver("zip", {
                                zlib: { level: 9 }, // Sets the compression level.
                            });
                            archive.on("error", function (err) {
                                throw err;
                            });
                            output.on("close", function () {
                                console.log(
                                    "language-pack archive generated with a filesize of " +
                                        archive.pointer() +
                                        " bytes" +
                                        `\n(./${filename}.zip)`,
                                );
                            });
                            archive.pipe(output);
                            archive.directory("template/", false);
                            archive.finalize();
                        },
                    );
                },
            );
        });
    });
});