<?php

namespace App\Command;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Validator\Validator\ValidatorInterface;
use Doctrine\ORM\EntityManagerInterface;

use App\Entity\Outlet;
use App\Entity\Hub;

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

class ImportOutletsCommand extends Command
{
    private $object_manager;

    public function __construct(EntityManagerInterface $om, ValidatorInterface $validator)
    {
        $this->object_manager = $om;
        $this->validator = $validator;

        parent::__construct();
    }

    protected function configure()
    {
        $this->setName('outlets:import')
            ->setDescription('Import a CSV file with outlets and hubs.')
            ->setHelp('Creates outlets and hubs based off imported CSV.')
            ->addArgument('file', InputArgument::REQUIRED, 'Path to the CSV file.');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $csv_file = $input->getArgument('file');

        // CSV column order:
        // 0 - area
        // 1 - name
        // 2 - branch
        // 3 - address
        // 4 - hub yes/no
        // 5 - annex yes/no
        // 6 - latitude
        // 7 - longitude

        // attempt to open file
        try
        {
            $handle = fopen($csv_file, "r");
        }
        catch (Exception $e)
        {
            throw new Exception('The file "' . $csv_file . '" could be read.');
        }

        // get entity manager
        $em = $this->object_manager;

        // row counter
        $row = 1;

        // has error?
        $has_error = false;

        // loop through rows
        while (($fields = fgetcsv($handle)) !== false)
        {
            $output->writeln("Parsing row " . $row . "...");

            // check if this is also a hub
            $isHub = $fields[4] == 'Yes' ? true : false;

            if ($isHub)
            {
                $output->writeln("This is a hub! Creating and validating hub entity...");

                // create hub first
                $hub = new Hub();

                // set properties
                $this->setObject($hub, $fields);

                // validate
                $errors = $this->validator->validate($hub);
                $error_array = [];

                // add errors to list
                foreach ($errors as $error) 
                {
                    $error_array[$error->getPropertyPath()] = $error->getMessage();
                }

                if (!empty($error_array))
                {
                    foreach ($error_array as $key => $message)
                    {
                        $output->writeln("[Hub] Error on row " . $row . ", field '" . $key . "': " . $message);
                    }

                    // stop on error
                    $has_error = true;
                    break;
                }

                // save hub
                $em->persist($hub);
                $output->writeln("Saved hub data for row ". $row . ".");
            }

            $output->writeln("Creating and validating outlet entity...");

            // create outlet
            $outlet = new Outlet();

            // set properties
            $this->setObject($outlet, $fields);

            // validate
            $errors = $this->validator->validate($outlet);
            $error_array = [];

            // add errors to list
            foreach ($errors as $error) 
            {
                $error_array[$error->getPropertyPath()] = $error->getMessage();
            }

            if (!empty($error_array))
            {
                foreach ($error_array as $key => $message)
                {
                    $output->writeln("[Outlet] Error on row " . $row . ", field '" . $key . "': " . $message);
                }

                // stop on error
                $has_error = true;
                break;
            }

            if ($isHub)
            {
                // assign to hub
                $outlet->setHub($hub);
            }
            
            // save outlet
            $em->persist($outlet);
            $output->writeln("Saved outlet data for row ". $row . ".");

            // increment row
            $row++;
        }

        if (!$has_error)
        {
            // apply db changes
            $em->flush();
            $output->writeln("Done! All changes saved to database.");
        }
        else
        {
            $output->writeln("Errors occurred! Please check the CSV file is in the proper format.");
        }
        
    }

    protected function setObject($obj, $fields)
    {
        // times
        $format = 'g:i A';
        $time_open = DateTime::createFromFormat($format, "12:00 AM");
        $time_close = DateTime::createFromFormat($format, "11:59 PM");

        // coordinates
        $point = new Point($fields[7], $fields[6]);

        // set properties
        $obj->setName($fields[1])
            ->setBranch($fields[2])
            ->setAddress($fields[3])
            ->setTimeOpen($time_open)
            ->setTimeClose($time_close)
            ->setCoordinates($point);
    }
}