chatwoot/app/javascript/dashboard/helper/permissionsHelper.js

export const hasPermissions = (
  requiredPermissions = [],
  availablePermissions = []
) => {
  return requiredPermissions.some(permission =>
    availablePermissions.includes(permission)
  );
};

export const getCurrentAccount = ({ accounts } = {}, accountId = null) => {
  return accounts.find(account => Number(account.id) === Number(accountId));
};

export const getUserPermissions = (user, accountId) => {
  const currentAccount = getCurrentAccount(user, accountId) || {};
  return currentAccount.permissions || [];
};

const isPermissionsPresentInRoute = route =>
  route.meta && route.meta.permissions;

export const buildPermissionsFromRouter = (routes = []) =>
  routes.reduce((acc, route) => {
    if (route.name) {
      if (!isPermissionsPresentInRoute(route)) {
        // eslint-disable-next-line
        console.error(route);
        throw new Error(
          "The route doesn't have the required permissions defined"
        );
      }
      acc[route.name] = route.meta.permissions;
    }

    if (route.children) {
      acc = {
        ...acc,
        ...buildPermissionsFromRouter(route.children),
      };
    }

    return acc;
  }, {});

/**
 * Filters and transforms items based on user permissions.
 *
 * @param {Object} items - An object containing items to be filtered.
 * @param {Array} userPermissions - Array of permissions the user has.
 * @param {Function} getPermissions - Function to extract required permissions from an item.
 * @param {Function} [transformItem] - Optional function to transform each item after filtering.
 * @returns {Array} Filtered and transformed items.
 */
export const filterItemsByPermission = (
  items,
  userPermissions,
  getPermissions,
  transformItem = (key, item) => ({ key, ...item })
) => {
  // Helper function to check if an item has the required permissions
  const hasRequiredPermissions = item => {
    const requiredPermissions = getPermissions(item);
    return (
      requiredPermissions.length === 0 ||
      hasPermissions(requiredPermissions, userPermissions)
    );
  };

  return Object.entries(items)
    .filter(([, item]) => hasRequiredPermissions(item)) // Keep only items with required permissions
    .map(([key, item]) => transformItem(key, item)); // Transform each remaining item
};