import { defineConfig, loadEnv, type Plugin } from 'vite';
import react from '@vitejs/plugin-react';

export default defineConfig(({ mode, command }) => {
  const env = loadEnv(mode, process.cwd(), '');

  const isLocalDev = mode === 'development';
  const isBuild = command === 'build';

  const base = env.VITE_BASE_URL || '/';

  console.log(`[Vite] Mode: ${mode}, Command: ${command}, Base: ${base}, isLocalDev: ${isLocalDev}`);

  const excludePatterns: RegExp[] = isBuild && !isLocalDev
    ? [
        /[/\\]publish[/\\]/,
        /[/\\]component[/\\]wrap[/\\]/,
      ]
    : [];

  return {
    base,
    define: {
      global: 'globalThis',
    },
    server: {
      host: true,
      port: 3000,
      proxy: {
        '/snp-api': {
          target: env.VITE_SNP_API_TARGET || 'http://211.208.115.83:8041',
          changeOrigin: true,
          secure: false,
        },
      },
    },
    plugins: [
      react(),
      isBuild && !isLocalDev && ({
        name: 'exclude-dev-folders',
        resolveId(source: string) {
          const normalizedSource = source.replace(/\\/g, '/');
          for (const pattern of excludePatterns) {
            if (pattern.test(normalizedSource)) {
              return { id: 'virtual:empty-module', moduleSideEffects: false };
            }
          }
          return null;
        },
        load(id: string) {
          if (id === 'virtual:empty-module') {
            return 'export default null;';
          }
          return null;
        },
      } satisfies Plugin),
    ].filter(Boolean),
    resolve: {
      alias: {
        '@': '/src',
      },
    },
    esbuild: isBuild && !isLocalDev
      ? {
          drop: ['console', 'debugger'],
        }
      : {},
    build: {
      target: 'es2022',
      outDir: 'dist',
      cssCodeSplit: true,
      rollupOptions: {
        output: {
          manualChunks: {
            vendor: ['react', 'react-dom', 'react-router-dom'],
            map: ['ol', 'ol-ext'],
            state: ['zustand'],
          },
        },
      },
    },
  };
});