<?php
// $Id: update_advanced.settings.inc,v 1.6 2009-09-29 18:13:25 davereid Exp $

/**
 * @file
 * Code only required on the settings tab of the update status page.
 */

/**
 * Alters the update_settings form to add advanced, per-project settings.
 */
function _update_advanced_alter_settings(&$form, $form_state) {
  $form['update_advanced_check_disabled'] = array(
    '#type' => 'checkbox',
    '#title' => t('Check for updates of disabled modules and themes'),
    '#default_value' => variable_get('update_advanced_check_disabled', FALSE),
  );

  if ($available = update_get_available(TRUE)) {
    drupal_add_css(drupal_get_path('module', 'update_advanced') . '/update_advanced.css');

    $form['#theme'] = 'update_advanced_settings';

    $values = variable_get('update_advanced_project_settings', array());
    $form['update_advanced_project_settings'] = array('#tree' => TRUE);

    module_load_include('inc', 'update', 'update.compare');
    $data = update_calculate_project_data($available);
    $form['data'] = array('#type' => 'value', '#value' => $data);
    $form['available'] = array('#type' => 'value', '#value' => $available);

    // We need to call our own submit callback first, not the one from
    // update_settings_form, so that we can unset 'data' and 'available'
    // before they are saved into the {variables} table.
    array_unshift($form['#submit'], 'update_advanced_settings_submit');

    $form['update_advanced_project_settings_help'] = array(
      '#value' => t('These settings allow you to control if a certain project, or even a specific release of that project, should be ignored by the available updates report.  For each project, you can select if it should always warn you about a newer release, never warn you (ignore the project completely), or ignore a specific available release you do not want to upgrade to. You can also specify a note explaining why you are ignoring a specific project or version, and that will be displayed on the available updates report.'),
    );

    foreach ($data as $key => $project) {
      if (isset($available[$key])) {
        if (!isset($values[$key])) {
          $values[$key] = array(
            'check' => 'always',
            'notes' => '',
          );
        }

        $options = array();
        $options['always'] = t('Always');
        if (isset($project['recommended'])) {
          $options[$project['recommended']] = t('Ignore @version', array('@version' => $project['recommended']));
        }
        $options['never'] = t('Never');

        $form['update_advanced_project_settings'][$key]['check'] = array(
          '#type' => 'select',
          '#options' => $options,
          '#default_value' => $values[$key]['check'],
        );
        $form['update_advanced_project_settings'][$key]['notes'] = array(
          '#type' => 'textfield',
          '#size' => 50,
          '#default_value' => $values[$key]['notes'],
        );
      }
    }
  }
}

/**
 * Theme function for the update status settings tab.
 *
 * Formats the table of per-project settings, and renders the rest of the
 * form elements into their proper places for maximum clarity.
 */
function theme_update_advanced_settings($form) {
  $output = '';
  $output .= drupal_render($form['update_notify_emails']);
  $output .= drupal_render($form['update_check_frequency']);
  $output .= drupal_render($form['update_notification_threshold']);
  $output .= drupal_render($form['update_advanced_check_disabled']);

  $header = array(
    array('data' => t('Project'), 'class' => 'update-advanced-project'),
    array(
      'data' => t('Warn if out of date'),
      'class' => 'update-advanced-status',
    ),
    array('data' => t('Notes'), 'class' => 'update-advanced-notes'),
  );

  $data = $form['data']['#value'];
  $available = $form['available']['#value'];

  $rows = array();
  foreach ($data as $key => $project) {
    if (isset($available[$key])) {
      $row = array();
      $row[] = array(
        'class' => 'update-project',
        'data' => check_plain($available[$key]['title']),
      );
      $row[] = array(
        'class' => 'update-status',
        'data' => drupal_render($form['update_advanced_project_settings'][$key]['check']),
      );
      $row[] = array(
        'class' => 'update-notes',
        'data' => drupal_render($form['update_advanced_project_settings'][$key]['notes']),
      );
      if (!isset($rows[$project['project_type']])) {
        $rows[$project['project_type']] = array();
      }
      $row_key = drupal_strtolower($available[$key]['title']);
      $rows[$project['project_type']][$row_key] = $row;
    }
  }
  $split_rows = array();
  $project_types = array(
    'core' => t('Drupal core'),
    'module' => t('Modules'),
    'theme' => t('Themes'),
    'disabled-module' => t('Disabled modules'),
    'disabled-theme' => t('Disabled themes'),
  );
  foreach ($project_types as $type_name => $type_label) {
    if (!empty($rows[$type_name])) {
      $split_rows[] = array(
        'class' => 'update-advanced-settings-label',
        'data' => array(
          array(
            'class' => 'update-advanced-settings-label',
            'data' => $type_label,
            'colspan' => 3,
          ),
        ),
      );
      ksort($rows[$type_name]);
      $split_rows = array_merge($split_rows, $rows[$type_name]);
    }
  }
  $output .= theme('table', $header, $split_rows, array('class' => 'update-advanced-settings'));
  $output .= '<div class="form-item"><div class="description">' ."\n";
  $output .= drupal_render($form['update_advanced_project_settings_help']);
  $output .= "</div></div>\n";
  $output .= drupal_render($form['buttons']);
  $output .= drupal_render($form);
  return $output;
}

/**
 * Submit handler for the update status settings tab.
 *
 * Ensures that the temporary form data required for the theme function is not
 * actually saved into the {variables} table, then invokes the true submit
 * handler for the settings form to save or reset all the values.
 *
 * Also invalidates the cache of available updates if the "Check for updates
 * of disabled modules and themes" setting is being changed. Both the advanced
 * settings table and the available updates report need to refetch available
 * update data after this setting changes or they're going to show misleading
 * things (for example, listing all of the disabled projects on the site with
 * the "No available releases found" warning).
 */
function update_advanced_settings_submit($form, &$form_state) {
  unset($form_state['values']['data']);
  unset($form_state['values']['available']);

  // See if the update_advanced_check_disabled setting is being changed, and
  // if so, invalidate all cached update status data.
  $check_disabled = variable_get('update_advanced_check_disabled', FALSE);
  if ($form_state['values']['update_advanced_check_disabled'] != $check_disabled) {
    update_invalidate_cache();
  }
}