// Registry used by the player runtime to discover independently loaded region modules.

(function () {
  var root = window;
  var registry = root.pulsePlayerRegionTypes && typeof root.pulsePlayerRegionTypes === 'object' ? root.pulsePlayerRegionTypes : {};

  function normalizeType(type) {
    return String(type || '').trim().toLowerCase();
  }

  function register(type, definition) {
    registry[normalizeType(type)] = definition || {};
    return registry[normalizeType(type)];
  }

  function get(type) {
    return registry[normalizeType(type)] || null;
  }

  function list() {
    return Object.keys(registry).map(function (type) {
      return {
        type: type,
        definition: registry[type] || {}
      };
    });
  }

  root.pulsePlayerRegionTypes = {
    register: register,
    get: get,
    list: list
  };
}());

function getPlayerRegionModules() {
  if (!window.pulsePlayerRegionTypes || typeof window.pulsePlayerRegionTypes.list !== 'function') {
    return [];
  }

  return window.pulsePlayerRegionTypes.list();
}

function runRegionLifecycle(root, lifecycleName) {
  if (!root) {
    return;
  }

  getPlayerRegionModules().forEach(function (entry) {
    var module = entry && entry.definition ? entry.definition : null;
    if (!module || typeof module[lifecycleName] !== 'function') {
      return;
    }

    try {
      module[lifecycleName](root);
    } catch (_error) {
      // Keep slide rendering resilient if a region lifecycle hook fails.
    }
  });
}

function destroyRegionInstances(root) {
  runRegionLifecycle(root, 'destroyRegion');
}

function initializeRegionInstances(root) {
  runRegionLifecycle(root, 'initRegion');
}