bowling-analysis-system/src/processors/FileSaverProcessor.js

A comprehensive system for analyzing bowling techniques using video processing and metrics calculation

/**
 * File Saver Processor
 * 
 * Saves files to the filesystem
 * @module processors/FileSaverProcessor
 */

const { BaseProcessor } = require('../core/BaseProcessor');
const { defaultFileService } = require('../utils/FileService');

/**
 * @class FileSaverProcessor
 * @description Processor for saving data to the filesystem
 * @extends BaseProcessor
 */
class FileSaverProcessor extends BaseProcessor {
  /**
   * Create a new file saver processor
   * @param {Object} config - Processor configuration
   */
  constructor(config = {}) {
    super('fileSaver', config);
    this.fileService = defaultFileService;
  }

  /**
   * Process input by saving it to a file
   * @param {*} input - Input data to save
   * @param {Object} context - Processing context
   * @returns {Promise<Object>} Result with saved file path
   * @protected
   */
  async _process(input, context) {
    const filePath = this.config.path || context.outputPath;
    
    if (!filePath) {
      throw new Error('No output file path specified');
    }
    
    try {
      // Create directory if needed
      if (this.config.createDirectory) {
        await this.fileService.ensureDir(this.fileService.dirname(filePath));
      }
      
      // Determine format
      const format = this.config.format || 'json';
      
      // Save file based on format
      if (format === 'json') {
        await this.fileService.writeJsonFile(filePath, input);
      } else {
        await this.fileService.writeFile(filePath, input);
      }
      
      return {
        path: filePath,
        saved: true,
        data: input
      };
    } catch (error) {
      throw new Error(`Failed to save file ${filePath}: ${error.message}`);
    }
  }
}

module.exports = FileSaverProcessor;