import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import path, { dirname } from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

export default defineConfig({
    plugins: [react()],
    resolve: {
        alias: {
            '@': path.resolve(__dirname, 'client', 'src'),
        },
    },
    root: path.resolve(__dirname, 'client'),
    define: {
        'process.env': {
            NODE_ENV: JSON.stringify(process.env.NODE_ENV || 'production'),
        },
    },
    build: {
        minify: true,
        sourcemap: true,
        lib: {
            entry: path.resolve(__dirname, 'client/src/main.tsx'),
            name: 'ChaptersEditor',
            formats: ['iife'],
            fileName: () => 'chapters-editor.js',
        },
        rollupOptions: {
            output: {
                assetFileNames: (assetInfo) => {
                    if (assetInfo.name === 'style.css') return 'chapters-editor.css';
                    // Keep original names for image assets
                    if (assetInfo.name && /\.(png|jpe?g|svg|gif|webp)$/i.test(assetInfo.name)) {
                        return assetInfo.name;
                    }
                    return assetInfo.name || 'asset-[hash][extname]';
                },
                // Inline small assets, emit larger ones
                inlineDynamicImports: true,
                globals: {
                    react: 'React',
                    'react-dom': 'ReactDOM',
                },
            },
        },
        // Output to Django's static directory
        outDir: '../../../static/video_editor',
        emptyOutDir: true,
        external: ['react', 'react-dom'],
        // Inline assets smaller than 100KB, emit larger ones
        assetsInlineLimit: 102400,
    },
});