<?php
/**
 * @file
 * Bootstrap integration.
 */

/**
 * Implements hook_views_api().
 */
function views_bootstrap_views_api() {
  return array("api" => "3.0");
}

/**
 * Split items by rows and columns.
 * - Stolen from Drupal 8 template_preprocess_views_view_grid().
 *
 * @param $vars
 * @param $columns
 * @param bool $horizontal
 *
 * @return array
 *
 * @TODO: Use array_chunk().
 */
function _views_bootstrap_split_rows($vars, $columns, $horizontal = TRUE) {
  $col = 0;
  $row = 0;
  $items = array();
  $remainders = count($vars['rows']) % $columns;
  $num_rows = floor(count($vars['rows']) / $columns);

  // Iterate over each rendered views result row.
  foreach ($vars['rows'] as $item) {

    // Add the item.
    if ($horizontal) {
      $items[$row]['content'][$col]['content'] = $item;
    }
    else {
      $items[$col]['content'][$row]['content'] = $item;
    }

    // Increase, decrease or reset appropriate integers.
    if ($horizontal) {
      if ($col == 0 && $col != ($columns - 1)) {
        $col++;
      }
      elseif ($col >= ($columns - 1)) {
        $col = 0;
        $row++;
      }
      else {
        $col++;
      }
    }
    else {
      $row++;
      if (!$remainders && $row == $num_rows) {
        $row = 0;
        $col++;
      }
      elseif ($remainders && $row == $num_rows + 1) {
        $row = 0;
        $col++;
        $remainders--;
      }
    }
  }

  return $items;
}