<?php

/**
 * @phutil-external-symbol function xhprof_compute_flat_info
 */
final class PhabricatorXHProfProfileTopLevelView
  extends PhabricatorXHProfProfileView {

  private $profileData;
  private $limit;
  private $file;

  public function setProfileData(array $data) {
    $this->profileData = $data;
    return $this;
  }

  public function setLimit($limit) {
    $this->limit = $limit;
    return $this;
  }

  public function setFile(PhabricatorFile $file) {
    $this->file = $file;
    return $this;
  }

  public function render() {
    DarkConsoleXHProfPluginAPI::includeXHProfLib();

    $GLOBALS['display_calls'] = true;
    $totals = array();
    $flat = xhprof_compute_flat_info($this->profileData, $totals);
    unset($GLOBALS['display_calls']);

    $aggregated = array();
    foreach ($flat as $call => $counters) {
      $parts = explode('@', $call, 2);
      $agg_call = reset($parts);
      if (empty($aggregated[$agg_call])) {
        $aggregated[$agg_call] = $counters;
      } else {
        foreach ($aggregated[$agg_call] as $key => $val) {
          if ($key != 'wt') {
            $aggregated[$agg_call][$key] += $counters[$key];
          }
        }
      }
    }
    $flat = $aggregated;

    $flat = isort($flat, 'wt');
    $flat = array_reverse($flat);

    $rows = array();
    $rows[] = array(
      'Total',
      number_format($totals['ct']),
      number_format($totals['wt']).' us',
      '100.0%',
      number_format($totals['wt']).' us',
      '100.0%',
    );

    if ($this->limit) {
      $flat = array_slice($flat, 0, $this->limit);
    }

    foreach ($flat as $call => $counters) {
      $rows[] = array(
        $this->renderSymbolLink($call),
        number_format($counters['ct']),
        number_format($counters['wt']).' us',
        sprintf('%.1f%%', 100 * $counters['wt'] / $totals['wt']),
        number_format($counters['excl_wt']).' us',
        sprintf('%.1f%%', 100 * $counters['excl_wt'] / $totals['wt']),
      );
    }

    Javelin::initBehavior('phabricator-tooltips');

    $table = new AphrontTableView($rows);
    $table->setHeaders(
      array(
        'Symbol',
        'Count',
        javelin_tag(
          'span',
          array(
            'sigil' => 'has-tooltip',
            'meta'  => array(
              'tip' => 'Total wall time spent in this function and all of '.
                       'its children (children are other functions it called '.
                       'while executing).',
              'size' => 200,
            ),
          ),
          'Wall Time (Inclusive)'),
        '%',
        javelin_tag(
          'span',
          array(
            'sigil' => 'has-tooltip',
            'meta'  => array(
              'tip' => 'Wall time spent in this function, excluding time '.
                       'spent in children (children are other functions it '.
                       'called while executing).',
              'size' => 200,
            ),
          ),
          'Wall Time (Exclusive)'),
        '%',
      ));
    $table->setColumnClasses(
      array(
        'wide pri',
        'n',
        'n',
        'n',
        'n',
        'n',
      ));

    $panel = new AphrontPanelView();
    $panel->setHeader('XHProf Profile');

    if ($this->file) {
      $panel->addButton(
        phutil_tag(
          'a',
          array(
            'href' => $this->file->getBestURI(),
            'class' => 'green button',
          ),
          'Download .xhprof Profile'));
    }

    $panel->appendChild($table);

    return $panel->render();
  }
}