import fs from 'node:fs/promises';
import { createRequire } from 'node:module';
import path from 'node:path';
import url from 'node:url';

const WRONG_CODE = `import { bpfrpt_proptype_WindowScroller } from "../WindowScroller.js";`;

export function reactVirtualized() {
  return {
    name: 'flat:react-virtualized',
    // Note: we cannot use the `transform` hook here
    //       because libraries are pre-bundled in vite directly,
    //       plugins aren't able to hack that step currently.
    //       so instead we manually edit the file in node_modules.
    //       all we need is to find the timing before pre-bundling.
    configResolved: async () => {
      const require = createRequire(import.meta.url);
      const reactVirtualizedPath = require.resolve('react-virtualized');
      const { pathname: reactVirtualizedFilePath } = new url.URL(
        reactVirtualizedPath,
        import.meta.url,
      );
      const file = reactVirtualizedFilePath.replace(
        path.join('dist', 'commonjs', 'index.js'),
        path.join('dist', 'es', 'WindowScroller', 'utils', 'onScroll.js'),
      );
      const code = await fs.readFile(file, 'utf-8');
      const modified = code.replace(WRONG_CODE, '');
      await fs.writeFile(file, modified);
    },
  };
}