<?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 Doctrine\ORM\EntityManagerInterface;

use App\Entity\JobOrder;
use App\Entity\Warranty;
use App\Entity\SAPBattery;

use App\Ramcar\ServiceType;

use App\Service\WarrantyHandler;

use DateTime;

class GetFlawedWarrantiesCommand extends Command
{
    protected $em;
    protected $wh;
    protected $sapbatt_hash;

    public function __construct(EntityManagerInterface $em, WarrantyHandler $wh)
    {
        $this->em = $em;
        $this->wh = $wh;

        $this->loadSAPBatteries();

        parent::__construct();
    }

    protected function configure()
    {
        $this->setName('warranty:getflawedwarranties')
            ->setDescription('Get warranties that need to be fixed.')
            ->setHelp('Get flawed warranties')
            ->addArgument('start_date', InputArgument::REQUIRED, 'Start Date')
            ->addArgument('end_date', InputArgument::REQUIRED, 'End Date');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $s_date = $input->getArgument('start_date');
        $e_date = $input->getArgument('end_date');

        $start_date = DateTime::createFromFormat('Ymd', $s_date);
        $end_date = DateTime::createFromFormat('Ymd', $e_date);
        $end_date->setTime(23, 59);

        $missing_warranties = [];
        $comm_private_warranties = [];
        $invalid_plate_numbers = [];
        $duplicate_warranties = [];
        $sdate_expiry_wrong_warranties = [];

        $first_results_set = $this->getMissingWarranties($start_date, $end_date);
        //$second_results_set = $this->getWarrantiesWithWrongEntries($start_date, $end_date);
        //$third_results_set = $this->getDuplicateWarranties($start_date, $end_date);

        $missing_warranties = $first_results_set['missing'];
        $invalid_plate_numbers = $first_results_set['invalid_plate_number'];
        $comm_private_warranties = $first_results_set['commercial_private'];

        // our warranty error categories: missing, commercial_private, invalid plate number, duplicate, start date of expiry computation wrong
        $this->outputResults($s_date, $e_date, $missing_warranties, $invalid_plate_numbers, $comm_private_warranties);

        return 0;
    }

    protected function getMissingWarranties($start_date, $end_date)
    {
        $em = $this->em;

        // get all job orders with battery new service type within date range
        $jo_query = $em->createQuery('select ii,i,jo,cv from App\Entity\InvoiceItem ii inner join ii.invoice i inner join i.job_order jo inner join jo.cus_vehicle cv join jo.customer c where ii.battery is not null and jo.service_type = :service_type and jo.date_schedule > :date_start and jo.date_schedule < :date_end');
        $jo_query->setParameter('service_type', ServiceType::BATTERY_REPLACEMENT_NEW)
            ->setParameter('date_start', $start_date)
            ->setParameter('date_end', $end_date);

        $jos = $jo_query->iterate();

        $invalids = [];
        $missings = [];
        $comm_privates = [];

        foreach($jos as $row)
        {
            $invoice_item = $row[0];
            $invoice = $invoice_item->getInvoice();
            $jo = $invoice->getJobOrder();
            $cv = $jo->getCustomerVehicle();
            $customer = $jo->getCustomer();

            if ($invoice_item != null)
            {
                if($invoice_item->getBattery() != null)
                {
                    // manually retrieve the SAPBattery using the SAPCode
                    $battery_sap_code = $invoice_item->getBattery()->getSAPCode();
                    $found_battery = $this->findSAPBattery($battery_sap_code);
                    $sap_code = '\'' . $battery_sap_code . '\'';
                    if (!$found_battery)
                    {
                        $sap_code = 'NULL';
                    }

                    // have to use this erroneous setting of the warranty period
                    // to be able to find those warranties that were added with this warranty period.
                    // warranties found with this warranty period will be marked as commercial_private
                    $warranty_period = 0;
                    if ($invoice_item->getBattery()->getWarrantyPrivate() != null)
                    {
                        $warranty_period = $invoice_item->getBattery()->getWarrantyPrivate();
                    }
                    if ($invoice_item->getBattery()->getWarrantyCommercial() != null)
                    {
                        $warranty_period = $invoice_item->getBattery()->getWarrantyCommercial();
                    }
                    if ($invoice_item->getBattery()->getWarrantyTnv() != null)
                    {
                        $warranty_period = $invoice_item->getBattery()->getWarrantyTnv();
                    }

                    if ($invoice->getDateCreate() != null)
                    {
                        // check if plate number is "clean". If not, do not insert into warranty
                        if (!(Warranty::cleanPlateNumber($cv->getPlateNumber())))
                        {
                            $invalids[] = [
                                'jo_id' => $jo->getID(),
                                'plate_number' => $cv->getPlateNumber(),
                                'expiry_date' => '',
                            ];

                            continue;
                        }

                        // check if warranty already exists
                        $cleaned_plate_number = Warranty::cleanPlateNumber($cv->getPlateNumber());

                        // use date_create of invoice as start date, as decided in group chat
                        $expiry_date_date_create = $this->wh->computeDateExpire($jo->getInvoice()->getDateCreate(), $warranty_period);
                        $results = $em->getRepository(Warranty::class)->findBy(['plate_number' => $cleaned_plate_number, 
                            'date_expire' => $expiry_date_date_create]);;

                        if (empty($results))
                        {
                            $missings[] = [
                                'jo_id' => $jo->getID(),
                                'plate_number' => $cv->getPlateNumber(),
                                'expiry_date' => $expiry_date_date_create->format('Y-m-d'),
                            ];
                        }
                        else
                        {
                            foreach ($results as $warranty)
                            {
                                $comm_privates[] = [
                                    'warranty_id' => $warranty->getID(),
                                    'plate_number' => $warranty->getPlateNumber(),
                                    'expiry_date' => $warranty->getDateExpire()->format('Y-m-d'),
                                ];
                            }
                        }
                    }
                }
            }

            $em->detach($row[0]);
            $em->clear();
        }

        $res = [
            'missing' => $missings,
            'invalid_plate_number' => $invalids,
            'commercial_private' => $comm_privates,
        ];

        return $res;

    }

    protected function getWarrantiesWithWrongEntries($start_date, $end_date)
    {
        $em = $this->em;

        // get all job orders with battery new service type within date range
        $jo_query = $em->createQuery('select ii,i,jo,cv from App\Entity\InvoiceItem ii inner join ii.invoice i inner join i.job_order jo inner join jo.cus_vehicle cv join jo.customer c where ii.battery is not null and jo.service_type = :service_type and jo.date_schedule > :date_start and jo.date_schedule < :date_end');
        $jo_query->setParameter('service_type', ServiceType::BATTERY_REPLACEMENT_NEW)
            ->setParameter('date_start', $start_date)
            ->setParameter('date_end', $end_date);

        $jos = $jo_query->iterate();

        foreach($jos as $row)
        {
            $invoice_item = $row[0];
            $invoice = $invoice_item->getInvoice();
            $jo = $invoice->getJobOrder();
            $cv = $jo->getCustomerVehicle();
            $customer = $jo->getCustomer();

            $em->detach($row[0]);
            $em->clear();
        }

    }

    protected function getDuplicateWarranties($start_date, $end_date)
    {
    }

    protected function outputResults($start_date, $end_date, $missing, $invalid, $commercial_private)
    {
        $date_range = $start_date . '-' . $end_date;
        // output one file per array in csv format
        // missing warranties
        // we output the JOs with no warranties
        $missing_csv_filename = $date_range . '-' . 'missing_warranties.csv';
        try
        {
            $missing_fh = fopen($missing_csv_filename, 'a');
        }
        catch (Exception $e)
        {
            throw new Exception('The file "' . $missing_csv_filename . '" could not be opened.');
        }

        if ((count($missing)) > 0)
        {
            fputcsv($missing_fh, [
                'JO ID',
                'Plate Number',
                'Expiry Date',
            ]);
 
            foreach($missing as $missing_row)
            {
                fputcsv($missing_fh, $missing_row);
            }
        }

        // invalid plate numbers
        $invalid_plates_csv_filename = $date_range . '-' . 'invalid_plate_jos.csv';
        try
        {
            $invalid_plates_fh = fopen($invalid_plates_csv_filename, 'a');
        }
        catch (Exception $e)
        {
            throw new Exception('The file "' . $invalid_plates_csv_filename . '" could not be opened.');
        }

        if ((count($invalid)) > 0)
        {
            fputcsv($invalid_plates_fh, [
                'JO ID',
                'Plate Number',
                'Expiry Date',
            ]);

            foreach($invalid as $invalid_row)
            {
                fputcsv($invalid_plates_fh, $invalid_row);
            }
        }

        // warranties whose expiration dates were set to the commercial period
        // but warranty class is private
        $comm_private_csv_filename = $date_range . '-' . 'comm_private_warranties.csv';
        try
        {
            $comm_private_fh = fopen($comm_private_csv_filename, 'a');
        }
        catch (Exception $e)
        {
            throw new Exception('The file "' . $comm_private_csv_filename . '" could not be opened.');
        }

        if ((count($commercial_private)) > 0)
        {
            fputcsv($comm_private_fh, [
                'Warranty ID',
                'Plate Number',
                'Expiry Date',
            ]);

            foreach($commercial_private as $comm_private_row)
            {
                fputcsv($comm_private_fh, $comm_private_row);
            }
        }
    }

    protected function loadSAPBatteries()
    {
        $this->sapbatt_hash = [];

        $sap_batteries = $this->em->getRepository(SAPBattery::class)->findAll();
        foreach($sap_batteries as $sap_batt)
        {
            $id = $sap_batt->getID();
            $brand_size = $sap_batt->getBrand()->getID() . " " .  $sap_batt->getSize()->getID();
            $this->sapbatt_hash[$id] = $brand_size;
        }
    }

    protected function findSAPBattery($batt_id)
    {
        if (!isset($this->sapbatt_hash[$batt_id]))
        {
            return false;
        }

        return true;
    }


}