const minify = require('@node-minify/core');
const csso = require('@node-minify/csso');
const terser = require('@node-minify/terser');
const path = require('path');
const fs = require('fs');

// Specify the order JS and CSS files in arrays
const jsFiles = [
    'node_modules/video.js/dist/video.min.js',
    'node_modules/videojs-errors/dist/videojs-errors.min.js',
    'node_modules/videojs-hotkeys/videojs.hotkeys.min.js',
    'node_modules/videojs-contrib-ads/dist/videojs-contrib-ads.min.js',
    'node_modules/@viostream/videojs-overlay/dist/videojs-overlay.min.js',
    'src/module/share/share.js',
    'src/module/watermark/watermark.js',
    'node_modules/videojs-vr/dist/videojs-vr.min.js',
    'node_modules/videojs-youtube/dist/Youtube.min.js',
    'src/module/ads/ad.js',
    'src/player.js'
];

const cssFiles = [
    'node_modules/video.js/dist/video-js.min.css',
    'node_modules/videojs-errors/dist/videojs-errors.css',
    'node_modules/videojs-contrib-ads/dist/videojs-contrib-ads.css',
    'node_modules/@viostream/videojs-overlay/dist/videojs-overlay.css',
    'src/module/share/share.css',
    'src/module/watermark/watermark.css',
    'node_modules/videojs-vr/dist/videojs-vr.css'
];

// Function to concatenate files and minify the combined file
const concatenateAndMinify = (files, minifier, outputFile) => {
    const fileType = path.extname(files[0]).slice(1); // Get the file type dynamically (js or css)
    const combinedFilePath = path.join(__dirname, 'bundle', `combined.${fileType}`);

    // Concatenate content of each file and write to combined file
    let combinedContent = '';
    files.forEach(file => {
        const content = fs.readFileSync(path.join(__dirname, file), 'utf-8');
        combinedContent += content + '\n'; // Add file content with newline
    });

    // Write the concatenated content to the combined file
    fs.writeFileSync(combinedFilePath, combinedContent, 'utf-8');
    console.log(`Combined ${fileType} file created: ${combinedFilePath}`);

    // Now minify the combined file
    minify({
        compressor: minifier,
        input: combinedFilePath,
        output: path.join(__dirname, 'bundle', outputFile),
        callback: (err, min) => {
            if (err) {
                console.error(`Error minifying ${outputFile}:`, err);
            } else {
                console.log(`${outputFile} minified successfully!`);
                // Optionally delete the combined file after minification
                fs.unlinkSync(combinedFilePath);
            }
        }
    });
};

// Ensure the bundle directory exists
const bundleDir = path.join(__dirname, 'bundle');
if (!fs.existsSync(bundleDir)) {
    fs.mkdirSync(bundleDir);
}

// Bundle file anme base
var bundleFileName = 'vjs-player-bundle';

// Concatenate and minify JS files into one file
concatenateAndMinify(jsFiles, terser, `${bundleFileName}.min.js`);

// Concatenate and minify CSS files into one file
concatenateAndMinify(cssFiles, csso, `${bundleFileName}.min.css`);