<?php

namespace Templates\Base\OnePage\Pipeline\Display;

use App\CMS\Contracts\Content\DisplayPipeline\Process;
use App\CMS\Contracts\Repositories\Content as IContent;
use App\CMS\Helpers\PageRenderer;
use App\CMS\Helpers\Template;
use App\Http\Controllers\Controller;
use App\Models\Content\Content;
use Templates\Base\OnePage\Handlers\OnePage;

class AttachPagesToHomepage implements Process
{
    /**
     * Name of settings key for list of pages used on homepage
     */
    protected static $homepagePagesInitialized = false;
    protected static $homepagePages = [];

    /**
     * Process and modify given page
     *
     * @param Content $content
     *
     * @return mixed|void
     */
    function handle(Content & $content)
    {
        if (!$content->isHomepage) {
            return;
        }

        $pages = $this->getPagesOnHomepage();

        // create real content from pages
        $pagesRaw = $pagesInTemplates = [];
        foreach ($pages as $page) {
            // save pages as models only
            $pagesRaw[$page->url] = $page;

            // save rendered pages
            try {
                $pagesInTemplates[$page->url] = Controller::getView($page->template, ['page' => $page])
                                                          ->render();
            } catch (\Exception $e) {
                if (\Auth::user()) {
                    $pagesInTemplates[$page->url] = view(Template::name('errors.cannotRender'), [
                        'page'      => $page,
                        'exception' => $e
                    ])->render();
                }
            }
        }

        // set page contents
        $content->pages = $pagesInTemplates;
        $content->rawPages = $pagesRaw;
    }

    /**
     * Getter for pages displayed on homepage
     * @return array
     */
    public function getPagesOnHomepage()
    {
        $pageIds = (array)json_decode(setting(OnePage::HOMEPAGE_PAGES_SETTINGS_KEY, '[]'));

        if (empty($pageIds)) {
            return [];
        }

        // get all available pages
        $pages = Content::whereIn('id', $pageIds)
                        ->with('subpages');

        if (\Auth::user()) {
            $pages = $pages->where('status', '!=', IContent::STATUS_DRAFT);
        } else {
            $pages = $pages->where('status', IContent::STATUS_PUBLIC);
        }

        $homepagePages = $pages->get()
                               ->getDictionary();

        foreach ($pageIds as $pageId) {
            if (!isset($homepagePages[$pageId])) {
                continue;
            }

            self::$homepagePages[] = $homepagePages[$pageId];
        }

        return self::$homepagePages;
    }
}