import path from 'path';
import fs from 'fs';
import { checkForCssFiles } from './utils';

/** Функция проверки vite.config.ts. Зависимости проставляются в checkDependencies.ts */
export async function checkViteConfig(project: string) {
  const projectDir = path.join(__dirname, '../../packages/react', project);
  const filePath = path.join(projectDir, 'vite.config.ts');

  try {
    const content = fs.readFileSync(filePath, 'utf8');
    let updatedContent = content;

    const hasCss = checkForCssFiles(projectDir);

    if (hasCss) {
      if (!content.includes('vite-plugin-lib-inject-css')) {
        updatedContent = updatedContent.replace(
          /(import \* as path from 'path';)/,
          `$1\nimport { libInjectCss } from 'vite-plugin-lib-inject-css';`
        );
      }

      if (!content.includes('libInjectCss()')) {
        updatedContent = updatedContent.replace(
          /(plugins: \[\s*react\(\),)/,
          `$1\n    libInjectCss(),`
        );
      }
    }

    const shouldAddAliasesExclude = !content.includes('aliasesExclude');
    const shouldAddStaticImport = !content.includes('staticImport: true');
    const needsUpdate = shouldAddAliasesExclude || shouldAddStaticImport;

    if (needsUpdate) {
      const dtsConfigPattern = /(dts\(\s*{\s*)([\s\S]*?)(\s*)(}\);?)/gs;

      updatedContent = updatedContent.replace(
        dtsConfigPattern,
        (match, prefix, innerContent, whitespaceBeforeClosing, suffix) => {
          const newProperties: string[] = [];
          if (shouldAddAliasesExclude) {
            newProperties.push('aliasesExclude: [/^@dpa\\//],');
          }
          if (shouldAddStaticImport) {
            newProperties.push('staticImport: true,');
          }

          if (newProperties.length === 0) return match;

          const formattedProperties = newProperties.join('\n      ');
          const indent = innerContent.match(/\n(\s*)\S/)?.pop() || '  ';

          return `${prefix}${innerContent}
${indent}${formattedProperties}${whitespaceBeforeClosing}${suffix}`;
        }
      );
    }

    if (updatedContent !== content) {
      fs.writeFileSync(filePath, updatedContent + '\n');
    }
  } catch (error) {
    console.error('Ошибка при обновлении vite.config.ts:', error);
    throw error;
  }
}