const fs = require('fs');
const path = require('path');
const UglifyJS = require('uglify-js');
const CleanCSS = require('clean-css');

console.log('Starting build process...');

const staticDir = path.join(__dirname, 'static');
const files = fs.readdirSync(staticDir);

files.forEach(item => {
    const fullPath = path.join(staticDir, item);
    let destPath;

    if (item.endsWith('.css') && !item.endsWith('.min.css')) {
        destPath = path.join(staticDir, item.replace('.css', '.min.css'));
        try {
            const source = fs.readFileSync(fullPath, 'utf8');
            const result = new CleanCSS().minify(source);
            fs.writeFileSync(destPath, result.styles, 'utf8');
            console.log(`Compressed CSS: ${item} -> ${path.basename(destPath)}`);
        } catch (err) {
            console.error(`Error compressing ${item}:`, err);
        }
    } else if (item.endsWith('.js') && !item.endsWith('.min.js')) {
        destPath = path.join(staticDir, item.replace('.js', '.min.js'));
        try {
            const source = fs.readFileSync(fullPath, 'utf8');
            const result = UglifyJS.minify(source);
            if (result.error) {
                throw result.error;
            }
            fs.writeFileSync(destPath, result.code, 'utf8');
            console.log(`Compressed JS: ${item} -> ${path.basename(destPath)}`);
        } catch (err) {
            console.error(`Error compressing ${item}:`, err);
        }
    }
});

console.log('Build process finished.');