import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import electron from 'vite-plugin-electron';
import renderer from 'vite-plugin-electron-renderer';
import { visualizer } from 'rollup-plugin-visualizer';
import { analyzer } from 'vite-bundle-analyzer';
import { resolve } from 'path';

// https://vitejs.dev/config/
export default defineConfig({
  plugins: [
    react(),
    electron([
      {
        // Main-Process entry file of the Electron App.
        entry: 'electron/main.ts',
      },
      {
        entry: 'electron/preload.ts',
        onstart(options) {
          // Notify the Renderer-Process to reload the page when the Preload-Scripts build is complete,
          // instead of restarting the entire Electron App.
          options.reload();
        },
      },
    ]),
    renderer(),
    // Bundle analyzer - only in build mode with ANALYZE flag
    process.env.ANALYZE === 'true' &&
      visualizer({
        filename: 'dist/stats.html',
        open: true,
        gzipSize: true,
        brotliSize: true,
        template: 'treemap', // 'treemap', 'sunburst', 'network'
      }),
    // Alternative bundle analyzer that opens in browser
    process.env.ANALYZE === 'server' &&
      analyzer({
        analyzerMode: 'server',
        openAnalyzer: true,
      }),
  ].filter(Boolean),
  resolve: {
    alias: {
      '@': resolve(__dirname, './src'),
    },
  },
  server: {
    port: 5173,
  },
  build: {
    // Generate source maps for better debugging in production
    sourcemap: process.env.NODE_ENV === 'development',
    // Split chunks for better caching
    rollupOptions: {
      output: {
        manualChunks: {
          // Separate vendor chunks for better caching
          react: ['react', 'react-dom'],
          // Add other vendor chunks as needed
        },
      },
    },
  },
});