Pocket-Bird/build.js

// @ts-check

import { rollup } from 'rollup';
import { readFileSync, writeFileSync, mkdirSync, unlinkSync, cpSync, createWriteStream } from 'fs';
import archiver from 'archiver';

// Path constants
const BUILD_CACHE_PATH = "./build-cache.json";
const SRC_DIR = "./src";
const SPRITES_DIR = "./sprites";
const IMAGES_DIR = "./images";
const FONTS_DIR = "./fonts";
const DIST_DIR = "./dist";

const BROWSER_MANIFEST = "./platform-specific/extension/manifest.json";
const OBSIDIAN_MANIFEST = "./platform-specific/obsidian/manifest.json";
const USERSCRIPT_HEADER = "./platform-specific/userscript/header.txt"; 
const VSCODE_PACKAGE = "./platform-specific/vscode/package.json";
const OBSIDIAN_WRAPPER = "./platform-specific/obsidian/wrapper.js";
const VSCODE_WRAPPER = "./platform-specific/vscode/extension.js";

const USERSCRIPT_DIR = DIST_DIR + "/userscript";
const EXTENSION_DIR = DIST_DIR + "/extension";
const OBSIDIAN_DIR = DIST_DIR + "/obsidian";
const VSCODE_DIR = DIST_DIR + "/vscode";

const STYLESHEET_PATH = SRC_DIR + "/stylesheet.css";
const APPLICATION_ENTRY = SRC_DIR + "/application.js";
const BUNDLED_OUTPUT = DIST_DIR + "/birb.bundled.js";
const BIRB_OUTPUT = DIST_DIR + "/birb.js";

const MONOCRAFT_URL = "https://cdn.jsdelivr.net/gh/idreesinc/Monocraft@99b32ab40612ff2533a69d8f14bd8b3d9e604456/dist/Monocraft.otf";

const VERSION_KEY = "__VERSION__";
const STYLESHEET_KEY = "___STYLESHEET___";
const MONOCRAFT_SRC_KEY = "__MONOCRAFT_SRC__";
const CODE_KEY = "__CODE__";

const spriteSheets = [
	{
		key: "__SPRITE_SHEET__",
		path: SPRITES_DIR + "/birb.png"
	},
	{
		key: "__FEATHER_SPRITE_SHEET__",
		path: SPRITES_DIR + "/feather.png"
	}
];

/** @type {Record<string, any>} */
let buildCache = {};
try {
	const cacheContent = readFileSync(BUILD_CACHE_PATH, 'utf8');
	buildCache = JSON.parse(cacheContent);
} catch (e) {
	console.warn("No build cache found, starting fresh");
}

const now = new Date();
const versionDate = `${now.getFullYear()}.${now.getMonth() + 1}.${now.getDate()}`;

// Get current build number from the build cache
let buildNumber = 0;

if (buildCache.version && buildCache.version.startsWith(versionDate)) {
	// Same day, increment build number
	const parts = buildCache.version.split('.');
	if (parts.length === 4) {
		buildNumber = parseInt(parts[3], 10) + 1;
	}
}

// const version = `${versionDate}.${buildNumber}`;
const version = `${versionDate}`; // Disable build number for now

// Update build cache
buildCache.version = version;
writeFileSync(BUILD_CACHE_PATH, JSON.stringify(buildCache), 'utf8');

// =============================================
// Build JavaScript function
// =============================================

// Bundle with rollup
const bundle = await rollup({
	input: APPLICATION_ENTRY,
});

await bundle.write({
	file: BUNDLED_OUTPUT,
	format: 'iife',
});

await bundle.close();

let birbJs = readFileSync(BUNDLED_OUTPUT, 'utf8');

// Delete bundled file
unlinkSync(BUNDLED_OUTPUT);

// Replace version placeholder
birbJs = birbJs.replaceAll(VERSION_KEY, version);

// Compile and insert sprite sheets
for (const spriteSheet of spriteSheets) {
	const dataUri = readFileSync(spriteSheet.path, 'base64');
	birbJs = birbJs.replaceAll(spriteSheet.key, `data:image/png;base64,${dataUri}`);
}

// Insert stylesheet
const stylesheetContent = readFileSync(STYLESHEET_PATH, 'utf8');
birbJs = birbJs.replace(STYLESHEET_KEY, stylesheetContent).replace(MONOCRAFT_SRC_KEY, MONOCRAFT_URL);


// Write bundled JavaScript function
writeFileSync(BIRB_OUTPUT, birbJs);

// =============================================
// Build userscript
// =============================================

// Get userscript header
const userScriptHeader = readFileSync(USERSCRIPT_HEADER, 'utf8').replaceAll(VERSION_KEY, version);

mkdirSync(USERSCRIPT_DIR, { recursive: true });
const userScript = userScriptHeader + "\n" + birbJs;
writeFileSync(USERSCRIPT_DIR + '/birb.user.js', userScript);

// =============================================
// Build browser extension
// =============================================

mkdirSync(EXTENSION_DIR, { recursive: true });

// Copy birb.js
writeFileSync(EXTENSION_DIR + '/birb.js', birbJs);

// Copy manifest.json
let browserManifest = readFileSync(BROWSER_MANIFEST, 'utf8');
browserManifest = browserManifest.replace(VERSION_KEY, version);
writeFileSync(EXTENSION_DIR + '/manifest.json', browserManifest);

// Copy icons folder
mkdirSync(EXTENSION_DIR + '/images/icons', { recursive: true });
cpSync(IMAGES_DIR + '/icons/transparent', EXTENSION_DIR + '/images/icons/transparent', { recursive: true });

// Copy fonts folder
mkdirSync(EXTENSION_DIR + '/fonts', { recursive: true });
cpSync(FONTS_DIR, EXTENSION_DIR + '/fonts', { recursive: true });

// Compress extension folder into zip
const output = createWriteStream(DIST_DIR + "/extension.zip");
const archive = archiver('zip');

output.on('close', () => {
	console.log(`Created zip file: ${archive.pointer()} total bytes`);
});

archive.on('error', (err) => {
	throw err;
});

archive.pipe(output);
archive.directory(EXTENSION_DIR + '/', false);
archive.finalize();

// =============================================
// Build Obsidian plugin
// =============================================

mkdirSync(OBSIDIAN_DIR, { recursive: true });

// Wrap birb.js with plugin boilerplate
let obsidianPlugin = readFileSync(OBSIDIAN_WRAPPER, 'utf8').replace(VERSION_KEY, version).replace(CODE_KEY, birbJs);

// Encode font to data URI since Obsidian plugins can't have external font files
const monocraftFontData = readFileSync(FONTS_DIR + '/Monocraft.otf', 'base64');
const monocraftDataUri = `data:font/otf;base64,${monocraftFontData}`;
obsidianPlugin = obsidianPlugin.replace(MONOCRAFT_URL, monocraftDataUri);

// Create main.js with plugin code
writeFileSync(OBSIDIAN_DIR + '/main.js', obsidianPlugin);

// Copy manifest.json
let obsidianManifest = readFileSync(OBSIDIAN_MANIFEST, 'utf8');
obsidianManifest = obsidianManifest.replace(/"version":\s*".*"/, `"version": "${version}"`);
writeFileSync(OBSIDIAN_DIR + '/manifest.json', obsidianManifest);

// =============================================
// Build VSCode extension
// =============================================

mkdirSync(VSCODE_DIR, { recursive: true });

// Wrap birb.js with VSCode extension boilerplate
let vscodeExtension = readFileSync(VSCODE_WRAPPER, 'utf8').replace(VERSION_KEY, version).replace(CODE_KEY, birbJs);

// Create extension.js with extension code
writeFileSync(VSCODE_DIR + '/extension.js', vscodeExtension);

// Copy package.json
let vscodePackage = readFileSync(VSCODE_PACKAGE, 'utf8');
vscodePackage = vscodePackage.replace(VERSION_KEY, version);
writeFileSync(VSCODE_DIR + '/package.json', vscodePackage);

console.log(`Build complete: ${version}`);