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path: root/library/Cube/Web/IdoController.php
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<?php

// Icinga Web 2 Cube Module | (c) 2019 Icinga GmbH | GPLv2

namespace Icinga\Module\Cube\Web;

use Icinga\Application\Modules\Module;
use Icinga\Module\Cube\DimensionParams;
use Icinga\Module\Cube\Forms\DimensionsForm;
use Icinga\Module\Cube\IcingaDb\CustomVariableDimension;
use Icinga\Module\Cube\IcingaDb\IcingaDbCube;
use Icinga\Module\Cube\Ido\IdoCube;
use ipl\Stdlib\Str;
use ipl\Web\Compat\CompatController;
use ipl\Web\Url;
use ipl\Web\Widget\Tabs;

abstract class IdoController extends CompatController
{
    /**
     * Return this controllers' cube
     *
     * @return IdoCube
     */
    abstract protected function getCube(): IdoCube;

    public function detailsAction(): void
    {
        $cube = $this->prepareCube();

        $this->getTabs()->add('details', [
            'label' => $this->translate('Cube details'),
            'url'   => $this->getRequest()->getUrl()
        ])->activate('details');

        $this->view->title = $cube->getSlicesLabel();

        $this->view->links = ActionLinks::renderAll($cube, $this->view);

        $this->render('cube-details', null, true);
    }

    protected function renderCube(): void
    {
        $this->params->shift('format');
        $showSettings = $this->params->shift('showSettings');

        $cube = $this->prepareCube();

        $this->view->title = sprintf(
            $this->translate('Cube: %s'),
            $cube->getPathLabel()
        );

        if (count($cube->listDimensions()) > 0) {
            $this->view->cube = $cube;
        } else {
            $showSettings = true;
        }

        $this->view->url = Url::fromRequest();
        if ($showSettings) {
            $form = (new DimensionsForm())
                ->setUrl($this->view->url)
                ->setCube($cube)
                ->setUrl(Url::fromRequest())
                ->on(DimensionsForm::ON_SUCCESS, function ($form) {
                    $this->redirectNow($form->getRedirectUrl());
                })
                ->handleRequest($this->getServerRequest());

            $this->view->form = $form;
        } else {
            $this->setAutorefreshInterval(15);
        }

        $this->render('cube-index', null, true);
    }

    private function prepareCube(): IdoCube
    {
        $cube = $this->getCube();
        $cube->chooseFacts(array_keys($cube->getAvailableFactColumns()));

        $vars = DimensionParams::fromString($this->params->shift('dimensions', ''))->getDimensions();

        $resolved = $this->params->shift('resolved', false);

        if (
            ! $resolved
            && Module::exists('icingadb')
            && $this->hasIcingadbDimensionParams($vars)
        ) {
            $this->transformIcingadbDimensionParamsAndRedirect($vars);
        } elseif ($resolved) {
            $this->redirectNow(Url::fromRequest()->without('resolved'));
        }

        $wantNull = $this->params->shift('wantNull');

        foreach ($vars as $var) {
            $cube->addDimensionByName($var);
            if ($wantNull) {
                $cube->getDimension($var)->wantNull();
            }
        }

        foreach ($this->params->toArray() as $param) {
            $cube->slice(rawurldecode($param[0]), rawurldecode($param[1]));
        }

        return $cube;
    }

    /**
     * Get whether the dimensions contain icingadb dimension
     *
     * @param array $dimensions
     *
     * @return bool
     */
    private function hasIcingadbDimensionParams(array $dimensions): bool
    {
        foreach ($dimensions as $dimension) {
            if (
                Str::startsWith($dimension, CustomVariableDimension::HOST_PREFIX)
                || Str::startsWith($dimension, CustomVariableDimension::SERVICE_PREFIX)
            ) {
                return true;
            }
        }

        return false;
    }

    /**
     * Transform icingadb dimension and slice params and redirect
     *
     * This remove the new icingadb prefix from params and remove sort, problems-only, filter params
     *
     * @param array $icingadbDimensions
     */
    private function transformIcingadbDimensionParamsAndRedirect(array $icingadbDimensions): void
    {
        $dimensions = [];
        $slices = [];
        $toRemoveSlices = [];

        $prefix = CustomVariableDimension::HOST_PREFIX;
        if ($this->getRequest()->getControllerName() === 'ido-services') {
            $prefix = CustomVariableDimension::SERVICE_PREFIX;
        }

        foreach ($icingadbDimensions as $param) {
            $newParam = $param;
            if (strpos($param, $prefix) !== false) {
                $newParam = substr($param, strlen($prefix));
            }

            $slice = $this->params->shift(IcingaDbCube::SLICE_PREFIX . $param);
            if ($slice) {
                $slices[$newParam] = $slice;
                $toRemoveSlices[] = IcingaDbCube::SLICE_PREFIX . $param;
            }

            $dimensions[] = $newParam;
        }

        $icingadbParams = array_merge(
            $icingadbDimensions,
            $toRemoveSlices,
            array_keys($this->params->toArray(false))
        );

        $this->redirectNow(
            Url::fromRequest()
                ->setParam('dimensions', DimensionParams::fromArray($dimensions)->getParams())
                ->addParams($slices)
                ->addParams(['resolved' => true])
                ->without($icingadbParams)
        );
    }

    public function createTabs(): Tabs
    {
        $params = Url::fromRequest()->getParams()->toString();

        return $this->getTabs()
            ->add('cube/hosts', [
                'label' => $this->translate('Hosts'),
                'url'   => 'cube/hosts' . ($params === '' ? '' : '?' . $params)
            ])
            ->add('cube/services', [
                'label' => $this->translate('Services'),
                'url'   => 'cube/services' . ($params === '' ? '' : '?' . $params)
            ]);
    }
}