const { registerBackgroundTaskHandlers } = require('./background-task-handlers');
const { registerBackgroundTaskScheduling } = require('./background-task-scheduling');

function createBackgroundTaskSetup(options) {
  const pool = options && options.pool;
  const common = options && options.common;
  const backgroundTaskQueue = options && options.backgroundTaskQueue;
  const collectUploadPathsFromDirectory = options && options.collectUploadPathsFromDirectory;
  const removeUnusedUploadFiles = options && options.removeUnusedUploadFiles;
  const refreshApiSource = options && options.refreshApiSource;
  const refreshRssFeed = options && options.refreshRssFeed;
  const uploadsDir = String(options && options.uploadsDir || '').trim();
  const dataSourceStartupRefreshStaggerMs = Math.max(100, Number(options && options.dataSourceStartupRefreshStaggerMs || 250));

  if (!pool || !common || !backgroundTaskQueue || !collectUploadPathsFromDirectory || !removeUnusedUploadFiles || !refreshApiSource || !refreshRssFeed || !uploadsDir) {
    throw new Error('createBackgroundTaskSetup requires the background task dependencies.');
  }

  async function initialize() {
    registerBackgroundTaskHandlers(options);
    const backgroundTaskScheduling = registerBackgroundTaskScheduling(options);
    if (backgroundTaskScheduling && typeof backgroundTaskScheduling.initialize === 'function') {
      await backgroundTaskScheduling.initialize();
    }
  }

  return {
    initialize: initialize
  };
}

module.exports = { createBackgroundTaskSetup };