<?php
/**
 * Holds the meta page controllers.
 *
 * @package Sakura
 */

namespace Sakura\Controllers;

use Sakura\Config;
use Sakura\DB;
use Sakura\News;
use Sakura\Template;
use Sakura\User;

/**
 * Meta page controllers (sections that aren't big enough to warrant a dedicated controller).
 *
 * @package Sakura
 * @author Julian van de Groep <me@flash.moe>
 */
class MetaController extends Controller
{
    /**
     * Serves the site index.
     *
     * @return mixed HTML for the index.
     */
    public function index()
    {
        // Get the newest user
        $newestUserId = DB::table('users')
            ->where('rank_main', '!=', Config::get('restricted_rank_id'))
            ->where('rank_main', '!=', Config::get('deactive_rank_id'))
            ->orderBy('user_id', 'desc')
            ->limit(1)
            ->get(['user_id']);
        $newestUser = User::construct($newestUserId ? $newestUserId[0]->user_id : 0);

        // Get all the currently online users
        $timeRange = time() - Config::get('max_online_time');

        // Create a storage variable
        $onlineUsers = [];

        // Get all online users
        $getOnline = DB::table('users')
            ->where('user_last_online', '>', $timeRange)
            ->get(['user_id']);
        $getOnline = array_column($getOnline, 'user_id');

        foreach ($getOnline as $user) {
            $user = User::construct($user);

            // Do a second check
            if (!$user->isOnline()) {
                continue;
            }

            $onlineUsers[$user->id] = $user;
        }

        // Merge index specific stuff with the global render data
        Template::vars([
            'news' => new News(Config::get('site_news_category')),
            'newsCount' => Config::get('front_page_news_posts'),
            'stats' => [
                'userCount' => DB::table('users')
                    ->where('password_algo', '!=', 'disabled')
                    ->whereNotIn('rank_main', [1, 10])
                    ->count(),
                'newestUser' => $newestUser,
                'lastRegDate' => date_diff(
                    date_create(date('Y-m-d', $newestUser->registered)),
                    date_create(date('Y-m-d'))
                )->format('%a'),
                'topicCount' => DB::table('topics')->count(),
                'postCount' => DB::table('posts')->count(),
                'onlineUsers' => $onlineUsers,
            ],
        ]);

        // Return the compiled page
        return Template::render('main/index');
    }

    /**
     * Handles the news pages.
     *
     * @return mixed HTML for the correct news section.
     */
    public function news()
    {
        // Get arguments
        $args = func_get_args();
        $category = isset($args[0]) && !is_numeric($args[0]) ? $args[0] : Config::get('site_news_category');
        $post = isset($args[1]) && is_numeric($args[1]) ? $args[1] : (
            isset($args[0]) && is_numeric($args[0]) ? $args[0] : 0
        );

        // Create news object
        $news = new News($category);

        // Set parse variables
        Template::vars([
            'news' => $news,
            'postsPerPage' => Config::get('news_posts_per_page'),
            'viewPost' => $post != 0,
            'postExists' => $news->postExists($post),
        ]);

        // Print page contents
        return Template::render('main/news');
    }

    /**
     * Displays the FAQ.
     *
     * @return mixed HTML for the FAQ.
     */
    public function faq()
    {
        // Get faq entries
        $faq = DB::table('faq')
            ->orderBy('faq_id')
            ->get();

        // Set parse variables
        Template::vars([
            'page' => [
                'title' => 'Frequently Asked Questions',
                'questions' => $faq,
            ],
        ]);

        // Print page contents
        return Template::render('main/faq');
    }

    /**
     * Handles the info pages.
     *
     * @param string $id The page ID from the database.
     *
     * @return mixed HTML for the info page.
     */
    public function infoPage($id = null)
    {
        // Set default variables
        Template::vars([
            'page' => [
                'content' => '<h1>Unable to load the requested info page.</h1><p>Check the URL and try again.</p>',
            ],
        ]);

        // Set page id
        $id = strtolower($id);

        // Get the page from the database
        $ipData = DB::table('infopages')
            ->where('page_shorthand', $id)
            ->get();

        // Get info page data from the database
        if ($ipData) {
            // Assign new proper variable
            Template::vars([
                'page' => [
                    'id' => $id,
                    'title' => $ipData[0]->page_title,
                    'content' => $ipData[0]->page_content,
                ],
            ]);
        }

        // Return the compiled page
        return Template::render('main/infopage');
    }

    /**
     * Search page
     *
     * @return mixed HTML for the search page.
     */
    public function search()
    {
        return Template::render('main/search');
    }
}