form.js

'use strict'

/**
 * Fix num cores, allowing blanks to remain
 */
function fix_num_cores() {
  let node_type_input = $('#batch_connect_session_context_node_type');
  let node_type = node_type_input.val();
  let num_cores_input = $('#num_cores');

  if(num_cores_input.val() === '') {
    return;
  }

  if(node_type === 'hugemem') {
    set_ppn_owens_hugemem(num_cores_input);
  } else {
    set_ppn_owens_regular(num_cores_input);
  }
}

/**
 * Sets the PPN limits available for Owens hugemem nodes.
 *
 * hugemem reservations are always assigned the full node
 *
 * @param      {element}  num_cores_input  The input for num_cores
 */
function set_ppn_owens_hugemem(num_cores_input) {
  const NUM_CORES = 48;
  num_cores_input.attr('max', NUM_CORES);
  num_cores_input.attr('min', NUM_CORES);
  num_cores_input.val(NUM_CORES);
}

/**
 * Sets the PPN limits available for non hugemem Owens nodes.
 *
 * @param      {element}  num_cores_input  The input for num_cores
 */
function set_ppn_owens_regular(num_cores_input) {
  const NUM_CORES = 28;
  num_cores_input.attr('max', NUM_CORES);
  num_cores_input.attr('min', 0);
  num_cores_input.val(Math.min(NUM_CORES, num_cores_input.val()));
}

/**
 * Toggle the visibilty of a form group
 *
 * @param      {string}    form_id  The form identifier
 * @param      {boolean}   show     Whether to show or hide
 */
function toggle_visibilty_of_form_group(form_id, show) {
  let form_element = $(form_id);
  let parent = form_element.parent();

  if(show) {
    parent.show();
  } else {
    form_element.val('');
    parent.hide();
  }
}

/**
 * Toggle the visibilty of the license fields
 *
 * Academic: hidden
 * Commercial: visible
 */
function toggle_license_field_visibility() {
  let user_license_provider = $("#batch_connect_session_context_user_license_provider");

  toggle_visibilty_of_form_group(
    '#batch_connect_session_context_extern_license_server',
    user_license_provider.val() === 'external'
  );
  toggle_visibilty_of_form_group(
    '#batch_connect_session_context_extern_license_file',
    user_license_provider.val() === 'external'
  );
}

/**
 * Sets the change handler for the node_type select.
 */
function set_node_type_change_handler() {
  let node_type_input = $('#batch_connect_session_context_node_type');
  node_type_input.change(node_type_input, fix_num_cores);
}

/**
 * Sets the change handler for the user_is_commercial_user select.
 */
function set_user_license_provider_change_handler() {
  let user_license_provider = $("#batch_connect_session_context_user_license_provider");
  user_license_provider.change(toggle_license_field_visibility);
}

/**
 * Install event handlers
 */
$(document).ready(function() {
  // Set the max value to be what was set in the last session
  fix_num_cores();
  // Ensure that fields are shown or hidden based on what was set in the last session
  toggle_license_field_visibility();

  set_node_type_change_handler();
  set_user_license_provider_change_handler();
});