<?php

final class PhabricatorConfigIssueListController
  extends PhabricatorConfigController {

  public function handleRequest(AphrontRequest $request) {
    $viewer = $request->getViewer();

    $engine = new PhabricatorSetupEngine();
    $response = $engine->execute();
    if ($response) {
      return $response;
    }
    $issues = $engine->getIssues();

    $important = $this->buildIssueList(
      $issues,
      PhabricatorSetupCheck::GROUP_IMPORTANT,
      'fa-warning');
    $php = $this->buildIssueList(
      $issues,
      PhabricatorSetupCheck::GROUP_PHP,
      'fa-code');
    $mysql = $this->buildIssueList(
      $issues,
      PhabricatorSetupCheck::GROUP_MYSQL,
      'fa-database');
    $other = $this->buildIssueList(
      $issues,
      PhabricatorSetupCheck::GROUP_OTHER,
      'fa-question-circle');

    $title = pht('Setup Issues');

    if (!$issues) {
      $issue_list = id(new PHUIInfoView())
        ->setTitle(pht('No Issues'))
        ->appendChild(
          pht('Your install has no current setup issues to resolve.'))
        ->setSeverity(PHUIInfoView::SEVERITY_NOTICE);
    } else {
      $issue_list = array(
        $important,
        $php,
        $mysql,
        $other,
      );

      $issue_list = $this->buildConfigBoxView(
        pht('Unresolved Setup Issues'),
        $issue_list);
    }

    $crumbs = $this->buildApplicationCrumbs()
      ->addTextCrumb($title)
      ->setBorder(true);

    $launcher_view = id(new PHUILauncherView())
      ->appendChild($issue_list);

    $content = id(new PHUITwoColumnView())
      ->setFooter($launcher_view);

    return $this->newPage()
      ->setTitle($title)
      ->setCrumbs($crumbs)
      ->appendChild($content);
  }

  /**
   * @param array<PhabricatorSetupIssue> $issues
   * @param string $group
   * @param string $fonticon FontAwesome icon name
   */
  private function buildIssueList(array $issues, $group, $fonticon) {
    assert_instances_of($issues, PhabricatorSetupIssue::class);
    $list = new PHUIObjectItemListView();
    $list->setBig(true);
    $ignored_items = array();
    $items = 0;

    foreach ($issues as $issue) {
      if ($issue->getGroup() != $group) {
        continue;
      }

      $items++;
      $href = $this->getApplicationURI('/issue/'.$issue->getIssueKey().'/');
      $item = id(new PHUIObjectItemView())
        ->setHeader($issue->getName())
        ->setHref($href)
        ->setClickable(true)
        ->addAttribute($issue->getSummary());
      if (!$issue->getIsIgnored()) {
        $icon = id(new PHUIIconView())
          ->setIcon($fonticon)
          ->setBackground('bg-sky');
        $item->setImageIcon($icon);
        $list->addItem($item);
      } else {
        $icon = id(new PHUIIconView())
          ->setIcon('fa-eye-slash')
          ->setBackground('bg-grey');
        $item->setDisabled(true);
        $item->setImageIcon($icon);
        $ignored_items[] = $item;
      }
    }

    foreach ($ignored_items as $item) {
      $list->addItem($item);
    }

    if ($items == 0) {
      return null;
    } else {
      return $list;
    }
  }

}