dchadwick/web/modules/custom/ufc/ufc.module

<?php

use Drupal\node\Entity\Node;
use Drupal\Core\Entity\EntityInterface;
use Drupal\views\ViewExecutable;
use Drupal\Core\Render\Markup;

/**
 * Implements hook_theme().
 *
 * Register a module or theme's theme implementations.
 * The implementations declared by this hook specify how a particular render array is to be rendered as HTML.
 *
 * See: https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Render%21theme.api.php/function/hook_theme/8.2.x
 *
 * If you change this method, clear theme registry and routing table 'drush cc theme-registry' and 'drush cc router'.
 */
function ufc_theme($existing, $type, $theme, $path) {
  return [
    // Name of the theme hook.
    'ufc_fight' => [
      'render element' => 'children',
      // If no template name is defined here, it defaults to the name of the theme hook, ie. module-name-theme-hook.html.twig
      'template' => 'ufc-fight',
      // Optionally define path to Twig template files. Defaults to the module's ./templates/ directory.
      'path' => $path . '/templates',
      // Optionally define variables that will be passed to the Twig template and set default values for them.
      'variables' => [
        'fighter_1' => [],
        'fighter_2' => [],
      ],
    ],
  ];

}

/**
 * Implements hook_entity_presave().
 */
function ufc_entity_presave(Drupal\Core\Entity\EntityInterface $entity) {

  return;
  $bundle = $entity->bundle();

  if ($bundle === 'fight') {
    // Get fighter ids, pass to predictor.
    $f1_id = $entity->get('field_fighter_one')->getValue()[0]['target_id'];
    $f2_id = $entity->get('field_fighter_two')->getValue()[0]['target_id'];
    updatePrediction($f1_id, $f2_id, $entity);
  }

}

/**
 * Implements hook_cron().
 */
function ufc_cron() {
  // Reset the file.
  // file_put_contents("./modules/custom/ufc/fights_output.txt", "");
  // Run through predictions.
  // \Drupal::service("ufc.predictor")->updatePredictions();

  // // Check for lines in file to see incorrect fights.
  // $file_check = file("./modules/custom/ufc/fights_output.txt");

  // echo '<pre>';
  // print_r($file_check);
  // echo '</pre>';
  // exit();


}


/**
 * Updates the prediction field on save.
 *
 * @param int $f1
 * @param int $f2
 * @return void
 */
function updatePrediction($f1, $f2, EntityInterface $entity) {

  return;

  if (!$f1 || !$f2) {
    return;
  }

  $fighter_one = Node::load($f1);
  $fighter_two = Node::load($f2);
  $predictor = \Drupal::service('ufc.predictor');
  $results = $predictor->calculate($fighter_one, $fighter_two);
  $prediction = '';
  $fight_points = [
    $results['fighter_one']['points'],
    $results['fighter_two']['points'],
  ];

  rsort($fight_points);
  $score = ' (' . $fight_points[0] . '-' . $fight_points[1] . ')';

  if ($results['fighter_one']['points'] > $results['fighter_two']['points']) {
    $prediction .= $results['fighter_one']['name'];
    $prediction_name = $results['fighter_one']['name'];
  }
  elseif ($results['fighter_one']['points'] < $results['fighter_two']['points']) {
    $prediction .= $results['fighter_two']['name'];
    $prediction_name = $results['fighter_two']['name'];
  }
  else {
    $prediction .= 'TIE:';
  }

  $prediction .= $score;
  $entity->set('field_prediction', $prediction);

  // If there is a result, compare it to the prediction.
  $result = $entity->get('field_result')->getValue();
  if (empty($result)) {
    return;
  }

  $result_name = getFighterNameById(reset($result[0]));

  /*
   * The code below will attempt to update fight
   * predictions until they are correct
   *
   * (EXPERIMENTAL)
   */
  if ($result_name !== $prediction_name) {
    \Drupal::logger('ufc')->notice($entity->label() . " incorrect. Adjusting.");

    // Isolate advantages.
    foreach ($results as $fighter) {
      if ($fighter['name'] === $result_name) {
        $advantages = $fighter['advantages'];
      }

      if ($fighter['name'] === $prediction_name) {
        $disadvantages = $fighter['disadvantages'];
      }
    }
    $predictor->adjustWeights($advantages, $disadvantages);
    // updatePrediction($f1, $f2, $entity);
  }

  // Calculate Confidence.
  $skips = $results['skips'];
  $confidence_raw = (1 - ($skips / 17)) * 100;
  $percentage = round($confidence_raw, 2);
  $entity->set('field_accuracy', (float) $percentage);
}

function getFighterNameById($nid) {
  $node = \Drupal::entityTypeManager()->getStorage('node')->load($nid);
  $name = $node->label();
  return $name;
}

function ufc_views_pre_render(ViewExecutable $view) {
  foreach ($view->result as $row) {
    $html = "<h1>This is some markup</h1>";
    $markup = Markup::create($html);
    $row->_entity->set('field_plaintext_field', $markup);
  }
}