import { fileURLToPath, URL } from 'node:url'
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import tailwindcss from '@tailwindcss/vite'
import { ViteImageOptimizer } from 'vite-plugin-image-optimizer'

// https://vite.dev/config/
export default defineConfig({
  plugins: [
    react(),
    tailwindcss(),
    // svgo v4 keeps viewBox by default; defaults are fine
    ViteImageOptimizer(),
  ],
  resolve: {
    dedupe: ['react', 'react-dom'],
    alias: {
      '@': fileURLToPath(new URL('./src', import.meta.url)),
    },
  },
  optimizeDeps: {
    include: ['react', 'react-dom', 'react/jsx-runtime'],
  },
  build: {
    cssCodeSplit: true,
    rollupOptions: {
      output: {
        manualChunks(id) {
          if (!id.includes('node_modules')) return
          if (id.includes('@visx') || id.includes('/d3-') || id.includes('motion')) return 'charts'
          if (id.includes('/react') || id.includes('react-dom') || id.includes('react-router'))
            return 'vendor'
        },
      },
    },
  },
})