<?php

namespace App\Controller;

use Doctrine\ORM\Query;
use Doctrine\ORM\QueryBuilder;
use Doctrine\ORM\EntityManagerInterface;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\IsGranted;

use Catalyst\MenuBundle\Annotation\Menu;

use CrEOF\Spatial\PHP\Types\Geometry\Point;
use DateTime;
use DateInterval;

use App\Entity\JobOrder;
use App\Entity\Hub;

class AnalyticsController extends Controller
{
    /**
     * @Menu(selected="analytics_forecast")
     * @IsGranted("analytics.forecast")
     */
    public function forecast(EntityManagerInterface $em)
    {
        
        $date_start = DateTime::createFromFormat('Y-m-d H:i:s', '2018-01-01 00:00:00');
        $date_end = DateTime::createFromFormat('Y-m-d H:i:s', '2020-04-31 23:59:59');

        // get hub to analyze
        $hub = $em->getRepository(Hub::class)->find(86);
        $hub_coord = $hub->getCoordinates();

        // distance limit in meters
        $distance = 5000;

        $conn = $em->getConnection();

        // create query
        // formula to convert to km is 111195 * st_distance
        $sql = "select id, round(st_distance(coordinates, Point(:lng, :lat)) * 111195) as dist, date_schedule from job_order where st_distance(coordinates, Point(:lng, :lat)) * 111195 <= :distance_limit and date_schedule >= :date_start and date_schedule <= :date_end and status <> 'cancelled' order by date_schedule asc";
        // $query = $em->createQuery('select jo from App\\Entity\\JobOrder jo where st_distance(jo.coordinates, point(:lng, :lat)) * 111195 <= :distance_limit and jo.date_schedule >= :date_start and jo.date_schedule <= :date_end');
        $stmt = $conn->prepare($sql);
        $stmt->bindValue('lng', $hub_coord->getLongitude());
        $stmt->bindValue('lat', $hub_coord->getLatitude());
        $stmt->bindValue('distance_limit', $distance);
        $stmt->bindValue('date_start', $date_start->format('Y-m-d H:i:s'));
        $stmt->bindValue('date_end', $date_end->format('Y-m-d H:i:s'));
        $stmt->execute();
        $jos = $stmt->fetchAll();

        error_log(count($jos));

        // get 'today'
        $today = new DateTime();
        $today = DateTime::createFromFormat('Ymd', '20201101');

        // initialize counters
        $c_weekday = [];
        $c_day = [];

        // loop through job orders
        foreach ($jos as $jo)
        {
            $date = DateTime::createFromFormat('Y-m-d H:i:s', $jo['date_schedule']);
            $year = $date->format('Y');
            $month = $date->format('m');
            $day = $date->format('d');
            $weekday = $date->format('l');
            $hour = $date->format('H');

            // year day
            if (!isset($c_day[$year][$month][$day]))
                $c_day[$year][$month][$day] = 0;
            $c_day[$year][$month][$day]++;

            // weekday
            if (!isset($c_weekday[$year][$month][$weekday][$hour]))
                $c_weekday[$year][$month][$weekday][$hour] = 0;
            $c_weekday[$year][$month][$weekday][$hour]++;
        }

        error_log(print_r($c_weekday, true));

        $res_year = [];
        $date_loop = clone $date_start;
        for (; $date_loop <= $date_end; $date_loop->add(new DateInterval('P1D')))
        {
            $year = $date_loop->format('Y');
            $month = $date_loop->format('m');
            $day = $date_loop->format('d');
            $year_field = 'y' . $date_loop->format('Y');
            $id = $date_loop->format('m-d');

            // NOTE: toss aside feb 29
            if ($id == '02-29')
                continue;

            if (!isset($res_year[$id][$year_field]))
            {
                $res_year[$id]['date'] = $date_loop->format('M j');
                $res_year[$id][$year_field] = 0;
            }

            if (isset($c_day[$year][$month][$day]))
                $res_year[$id][$year_field] = $c_day[$year][$month][$day];
        }

        // error_log(print_r($res_year, true));

        $chart_year = [];
        foreach ($res_year as $day => $day_data)
            $chart_year[] = $day_data;

        // error_log(print_r($chart_year, true));

        // error_log(print_r($c_day, true));

        $chart_weekday = $this->generateWeekdayData($c_weekday, $today);

        error_log(print_r($chart_weekday, true));
        
        $params = [
            'data_year' => $chart_year,
            'data_weekday' => $chart_weekday,
        ];

        return $this->render('analytics/forecast.html.twig', $params);
    }

    protected function generateWeekdayData($all_weekday_data, $today)
    {
        $data = [];

        // build hours
        $hours = [];
        for ($i = 0; $i < 24; $i++)
            $hours[] = sprintf('%02d', $i);

        $month = $today->format('m');
        $weekday = $today->format('l');

        $year_data = [];
        foreach ($all_weekday_data as $year => $year_data)
        {
            // go through the hours
            foreach ($hours as $hour)
            {
                $id = $hour + 0;
                if (!isset($data[$id]))
                    $data[$id] = [
                        'hour' => $hour,
                    ];

                // get hour data
                if (isset($year_data[$month][$weekday][$hour]))
                    $data[$id]['y' . $year] = $year_data[$month][$weekday][$hour];
            }
        }

        return $data;
    }
}