better-xcloud/build.ts

#!/usr/bin/env bun
import { readFile } from "node:fs/promises";
import { parseArgs } from "node:util";
import { sys } from "typescript";
// @ts-ignore
import txtScriptHeader from "./src/assets/header_script.txt" with { type: "text" };
// @ts-ignore
import txtMetaHeader from "./src/assets/header_meta.txt" with { type: "text" };
import { assert } from "node:console";
import { ESLint } from "eslint";

enum BuildTarget {
    ALL = 'all',
    ANDROID_APP = 'android-app',
    MOBILE = 'mobile',
    WEBOS = 'webos',
}

const postProcess = (str: string): string => {
    // Unescape unicode charaters
    str = unescape((str.replace(/\\u/g, '%u')));
    // Replace \x00 to normal character
    str = str.replaceAll(/\\x[A-F0-9]{2}/g, (e) => String.fromCharCode(parseInt(e.substring(2), 16)));

    // Replace "globalThis." with "var";
    str = str.replaceAll('globalThis.', 'var ');

    // Remove enum's inlining comments
    str = str.replaceAll(/ \/\* [A-Z0-9_]+ \*\//g, '');
    str = str.replaceAll('/* @__PURE__ */ ', '');

    // Remove comments from import
    str = str.replaceAll(/\/\/ src.*\n/g, '');

    // Add ADDITIONAL CODE block
    str = str.replace('var DEFAULT_FLAGS', '\n/* ADDITIONAL CODE */\n\nvar DEFAULT_FLAGS');

    // Minify SVG
    str = str.replaceAll(/= "(<svg.*)";/g, function(match) {
        match = match.replaceAll(/\\n*\s*/g, '');
        return match;
    });


    assert(str.includes('/* ADDITIONAL CODE */'));
    assert(str.includes('window.BX_EXPOSED = BxExposed'));
    assert(str.includes('window.BxEvent = BxEvent'));
    assert(str.includes('window.BX_FETCH = window.fetch'));

    return str;
}

const build = async (target: BuildTarget, version: string, config: any={}) => {
    console.log('-- Target:', target);
    const startTime = performance.now();

    let outputScriptName = 'better-xcloud';
    if (target !== BuildTarget.ALL) {
        outputScriptName += `.${target}`;
    }
    let outputMetaName = outputScriptName;
    outputScriptName += '.user.js';
    outputMetaName += '.meta.js';

    const outDir = './dist';

    let output = await Bun.build({
        entrypoints: ['src/index.ts'],
        outdir: outDir,
        naming: outputScriptName,
        minify: {
            syntax: true,
        },
        define: {
            'Bun.env.BUILD_TARGET': JSON.stringify(target),
            'Bun.env.SCRIPT_VERSION': JSON.stringify(version),
        },
    });

    if (!output.success) {
        console.log(output);
        process.exit(1);
    }

    const {path} = output.outputs[0];
    // Get generated file
    let result = postProcess(await readFile(path, 'utf-8'));

    // Replace [[VERSION]] with real value
    const scriptHeader = txtScriptHeader.replace('[[VERSION]]', version);

    // Save to script
    await Bun.write(path, scriptHeader + result);

    // Create meta file (don't build if it's beta version)
    if (!version.includes('beta')) {
        await Bun.write(outDir + '/' + outputMetaName, txtMetaHeader.replace('[[VERSION]]', version));
    }

    // Check with ESLint
    const eslint = new ESLint();
    const results = await eslint.lintFiles([path]);
    results[0].messages.forEach((msg: any) => {
        console.error(`${path}#${msg.line}: ${msg.message}`);
    });

    console.log(`---- [${target}] done in ${performance.now() - startTime} ms`);
    console.log(`---- [${target}] ${new Date()}`);
}

const buildTargets = [
    BuildTarget.ALL,
    // BuildTarget.ANDROID_APP,
    // BuildTarget.MOBILE,
    // BuildTarget.WEBOS,
];

const { values, positionals } = parseArgs({
    args: Bun.argv,
    options: {
      version: {
        type: 'string',

      },
    },
    strict: true,
    allowPositionals: true,
  });

if (!values['version']) {
    console.log('Missing --version param');
    sys.exit(-1);
}

async function main() {
    const config = {};
    console.log('Building: ', values['version']);
    for (const target of buildTargets) {
        await build(target, values['version']!!, config);
    }

    console.log('\n** Press Enter to build or Esc to exit');
}

function onKeyPress(data: any) {
    const keyCode = data[0];
    if (keyCode === 13) {  // Enter key
        main();
    } else if (keyCode === 27) {  // Esc key
        process.exit(0);
    }
}

main();
process.stdin.setRawMode(true);
process.stdin.resume();
process.stdin.on('data', onKeyPress);