import * as plugins from './mod.plugins.js';
import * as paths from '../paths.js';

import { Project } from '../classes.project.js';

import { logger } from '../gitzone.logging.js';
const gitignorePath = plugins.path.join(paths.cwd, './.gitignore');

export const run = async (projectArg: Project) => {
  const gitignoreExists = await plugins.smartfile.fs.fileExists(gitignorePath);
  let customContent = '';

  if (gitignoreExists) {
    // lets get the existing gitignore file
    const existingGitIgnoreString =
      plugins.smartfile.fs.toStringSync(gitignorePath);

    // Check for different custom section markers
    const customMarkers = ['#------# custom', '# custom'];
    for (const marker of customMarkers) {
      const splitResult = existingGitIgnoreString.split(marker);
      if (splitResult.length > 1) {
        // Get everything after the marker (excluding the marker itself)
        customContent = splitResult[1].trim();
        break;
      }
    }
  }

  // Write the template
  const templateModule = await import('../mod_template/index.js');
  const ciTemplate = await templateModule.getTemplate('gitignore');
  await ciTemplate.writeToDisk(paths.cwd);

  // Append the custom content if it exists
  if (customContent) {
    const newGitignoreContent =
      plugins.smartfile.fs.toStringSync(gitignorePath);
    // The template already ends with "#------# custom", so just append the content
    const finalContent =
      newGitignoreContent.trimEnd() + '\n' + customContent + '\n';
    await plugins.smartfile.fs.toFs(finalContent, gitignorePath);
    logger.log('info', 'Updated .gitignore while preserving custom section!');
  } else {
    logger.log('info', 'Added a .gitignore!');
  }
};