// Module for reading and filtering files
const fs = require('fs');
const path = require('path');

/**
 * Recursively scans a directory, filters files by a pattern, and reads their content.
 * @param {string} dirPath - The path to the directory.
 * @param {string} pattern - The keyword pattern to match in the file name.
 * @returns {{filePath: string, content: string}[]} - An array of objects, each with the file path and its content.
 */
function getFileContents(dirPath, pattern) {
  let fileData = [];

  function scan(directory) {
    try {
      const entries = fs.readdirSync(directory, { withFileTypes: true });
      for (const entry of entries) {
        const fullPath = path.join(directory, entry.name);
        if (entry.isDirectory()) {
          scan(fullPath);
        } else {
          const regex = new RegExp(pattern, 'i');
          if (!pattern || regex.test(entry.name)) {
            try {
              const content = fs.readFileSync(fullPath, 'utf8');
              fileData.push({ filePath: fullPath, content });
            } catch (readError) {
              console.error(`Error reading file ${fullPath}:`, readError);
            }
          }
        }
      }
    } catch (scanError) {
      console.error(`Error scanning directory ${directory}:`, scanError);
    }
  }

  scan(dirPath);
  return fileData;
}

module.exports = { getFileContents };