import fs from 'fs-extra';
import concat from 'concat';
const packageJson = fs.readJSONSync('./package.json');
const VERSION = packageJson.version;
const ovWebcomponentRCPath = './dist/openvidu-webcomponent-rc';
const ovWebcomponentProdPath = './dist/openvidu-webcomponent';

export const buildWebcomponent = async () => {
	console.log('Building OpenVidu Web Component (' + VERSION + ')');
	const tutorialWcPath = '../../openvidu-tutorials/openvidu-webcomponent/web';
	const e2eWcPath = './e2e/webcomponent-app';

	try {
		await buildElement();
		await copyFiles(tutorialWcPath);
		await copyFiles(e2eWcPath);
		await renameWebComponentTestName(e2eWcPath);

		console.log(`OpenVidu Web Component (${VERSION}) built`);
	} catch (error) {
		console.error(error);
	}
};

async function buildElement() {
	const files = [`${ovWebcomponentRCPath}/polyfills.js`, /*`${ovWebcomponentRCPath}/runtime.js`,*/ `${ovWebcomponentRCPath}/main.js`];
	try {
		for (const file of files) {
			if (!fs.existsSync(file)) {
				console.error(`Error: File ${file} does not exist`);
				throw new Error(`Missing required file: ${file}`);
			}
		}
		await fs.ensureDir('./dist/openvidu-webcomponent');
		await concat(files, `${ovWebcomponentProdPath}/openvidu-webcomponent-${VERSION}.js`);
		await fs.copy(`${ovWebcomponentRCPath}/styles.css`, `${ovWebcomponentProdPath}/openvidu-webcomponent-${VERSION}.css`);

		if (fs.existsSync(`${ovWebcomponentRCPath}/assets`)) {
			await fs.copy(`${ovWebcomponentRCPath}/assets`, `${ovWebcomponentProdPath}/assets`);
		}
	} catch (err) {
		console.error('Error executing build function in webcomponent-builds.js');
		throw err;
	}
}

function renameWebComponentTestName(dir) {
	fs.renameSync(`${dir}/openvidu-webcomponent-${VERSION}.js`, `${dir}/openvidu-webcomponent-dev.js`);
	fs.renameSync(`${dir}/openvidu-webcomponent-${VERSION}.css`, `${dir}/openvidu-webcomponent-dev.css`);
}

async function copyFiles(destination) {
	if (fs.existsSync(destination)) {
		try {
			console.log(`Copying openvidu-webcomponent files from: ${ovWebcomponentProdPath} to: ${destination}`);
			await fs.ensureDir(ovWebcomponentProdPath);
			await fs.copy(ovWebcomponentProdPath, destination);
		} catch (err) {
			console.error('Error executing copy function in webcomponent-builds.js');
			throw err;
		}
	}
}

await buildWebcomponent();