import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { themeStoragePlugin } from '../../vite-theme-plugin';

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

export default defineConfig({
  root: path.resolve(__dirname, '.'),
  plugins: [
    react(),
    themeStoragePlugin(),
  ],
  resolve: {
    alias: {
      '@': path.resolve(__dirname, '../ui/src'),
      '@web': path.resolve(__dirname, './src'),
      '@openchamber/ui': path.resolve(__dirname, '../ui/src'),
      '@opencode-ai/sdk': path.resolve(__dirname, '../../node_modules/@opencode-ai/sdk/dist/client.js'),
    },
  },
  define: {
    'process.env': {},
    global: 'globalThis',
  },
  optimizeDeps: {
    include: ['@opencode-ai/sdk'],
  },
  server: {
    port: 5173,
    proxy: {
      '/api': {
        target: 'http://127.0.0.1:3001',
        changeOrigin: true,
      },
    },
  },
  build: {
    outDir: path.resolve(__dirname, 'dist'),
    emptyOutDir: true,
    chunkSizeWarningLimit: 1200,
    rollupOptions: {
      external: ['node:child_process', 'node:fs', 'node:path', 'node:url'],
      output: {
        manualChunks(id) {
          if (!id.includes('node_modules')) return undefined;

          const match = id.split('node_modules/')[1];
          if (!match) return undefined;

          const segments = match.split('/');
          const packageName = match.startsWith('@') ? `${segments[0]}/${segments[1]}` : segments[0];

          if (packageName === 'react' || packageName === 'react-dom') return 'vendor-react';
          if (packageName === 'zustand' || packageName === 'zustand/middleware') return 'vendor-zustand';

          if (packageName === '@opencode-ai/sdk') return 'vendor-opencode-sdk';
          if (packageName.includes('remark') || packageName.includes('rehype') || packageName === 'react-markdown') return 'vendor-markdown';
          if (packageName.startsWith('@radix-ui')) return 'vendor-radix';
          if (packageName.includes('react-syntax-highlighter') || packageName.includes('highlight.js')) return 'vendor-syntax';

          const sanitized = packageName.replace(/^@/, '').replace(/\//g, '-');
          return `vendor-${sanitized}`;
        },
      },
    },
  },
});