<?php
/**
 * For the full copyright and license information, please view the
 * docs/licenses/LICENSE.txt file that was distributed with this source code.
 */

namespace PrestaShop\PrestaShop\Adapter\Tab;

use PrestaShop\PrestaShop\Adapter\LegacyContext;
use PrestaShop\PrestaShop\Core\ConfigurationInterface;
use Profile;
use Tab;

/**
 * Class TabDataProvider provides Tabs data using legacy logic.
 */
class TabDataProvider
{
    /**
     * @var ConfigurationInterface
     */
    private $legacyConfiguration;

    /**
     * @var LegacyContext
     */
    private $legacyContext;

    /**
     * @param LegacyContext $legacyContext
     * @param ConfigurationInterface $legacyConfiguration
     */
    public function __construct(LegacyContext $legacyContext, ConfigurationInterface $legacyConfiguration)
    {
        $this->legacyContext = $legacyContext;
        $this->legacyConfiguration = $legacyConfiguration;
    }

    /**
     * Gets viewable tabs for current context employee.
     *
     * @param int $languageId
     *
     * @return array
     */
    public function getViewableTabsForContextEmployee($languageId)
    {
        if ($this->legacyContext->getContext()->employee) {
            return $this->getViewableTabs(
                $this->legacyContext->getContext()->employee->id_profile,
                $languageId
            );
        }

        return [];
    }

    /**
     * Gets tabs that given employee profile can view.
     *
     * @param int $profileId
     * @param int $languageId
     *
     * @return array
     */
    public function getViewableTabs($profileId, $languageId)
    {
        $viewableTabs = [];

        foreach (Tab::getTabs($languageId, 0) as $tab) {
            if ($this->canAccessTab($profileId, $tab['id_tab'])) {
                $children = Tab::getTabs($languageId, $tab['id_tab']);
                $viewableChildren = [];
                foreach ($children as $child) {
                    if ($this->canAccessTab($profileId, $child['id_tab'])) {
                        $subChildren = Tab::getTabs($languageId, $child['id_tab']);
                        // If child has sub children (three level menu) we only add the sub children
                        if (!empty($subChildren)) {
                            foreach ($subChildren as $subChild) {
                                if ($this->canAccessTab($profileId, $subChild['id_tab']) && $subChild['active']) {
                                    $viewableChildren[] = [
                                        'id_tab' => $subChild['id_tab'],
                                        'name' => $subChild['name'],
                                    ];
                                }
                            }
                        } elseif ($child['active']) {
                            // If child is a direct page without children it can be added in the list
                            $viewableChildren[] = [
                                'id_tab' => $child['id_tab'],
                                'name' => $child['name'],
                            ];
                        }
                    }
                }

                // Inactive tabs are not shown unless they have active children. "AdminDashboard" is always shown if active
                if ($tab['active'] && (!empty($viewableChildren) || $tab['class_name'] == 'AdminDashboard')) {
                    $viewableTabs[$tab['id_tab']] = [
                        'id_tab' => $tab['id_tab'],
                        'name' => $tab['name'],
                        'children' => $viewableChildren,
                    ];
                }
            }
        }

        return $viewableTabs;
    }

    /**
     * Check if given profile can access a tab.
     *
     * @param int $profileId
     * @param int $tabId
     * @param string $accessLevel view, add, edit or delete
     *
     * @return bool
     */
    private function canAccessTab($profileId, $tabId, $accessLevel = 'view')
    {
        if (!in_array($accessLevel, ['view', 'add', 'edit', 'delete'])) {
            return false;
        }

        if ($profileId === (int) $this->legacyConfiguration->get('_PS_ADMIN_PROFILE_')) {
            return true;
        }

        $tabAccess = Profile::getProfileAccesses($profileId);

        if (isset($tabAccess[$tabId][$accessLevel])) {
            return $tabAccess[$tabId][$accessLevel] === '1';
        }

        return false;
    }

    /**
     * Reset static tab cache
     *
     * @return void
     */
    public function resetTabCache(): void
    {
        Tab::resetTabCache();
    }
}