<?php

namespace Stemcell\Sales\Model;

use Magento\Customer\Model\Session;
use Magento\Framework\App\ResourceConnection as AppResource;
use Magento\SalesSequence\Model\Meta;

class Sequence extends \Magento\SalesSequence\Model\Sequence
{
    const DEFAULT_PATTERN  = "%s%s%'.05d";

    /**
     * @var string
     */
    protected string $lastIncrementId;

    /**
     * @var Meta
     */
    protected Meta $meta;

    protected false|\Magento\Framework\DB\Adapter\AdapterInterface $connection;

    /**
     * @var string
     */
    protected string $pattern;
    protected Session $customerSession;

    public function __construct(
        Meta $meta,
        AppResource $resource,
        Session $customerSession,
        string $pattern = self::DEFAULT_PATTERN
    ) {
        $this->customerSession = $customerSession;
        $this->meta = $meta;
        $this->connection = $resource->getConnection('sales');
        $this->pattern = $pattern;
        parent::__construct($meta, $resource, $pattern);
    }

    /**
     * Calculate current value depends on start value
     *
     * @return string
     */
    protected function calculateCurrentValue()
    {
        return ($this->lastIncrementId - $this->meta->getActiveProfile()->getStartValue())
            * $this->meta->getActiveProfile()->getStep() + $this->meta->getActiveProfile()->getStartValue();
    }

    protected function getCustomerAbbr(){
        if ($this->customerSession->isLoggedIn()) {
            return $this->customerSession->getCustomer()->getData('customer_abbr');
        }
        return '';
    }

    /**
     * Retrieve next value
     *
     * @return string
     */
    public function getNextValue(): ?string
    {
        $this->connection->insert($this->meta->getSequenceTable(), []);
        $this->lastIncrementId = $this->connection->lastInsertId($this->meta->getSequenceTable());
        return $this->getCurrentValue();
    }

    /**
     * Retrieve current value
     *
     * @return string
     */
    public function getCurrentValue(): ?string
    {
        if (!isset($this->lastIncrementId)) {
            return null;
        }

        return 'STI'.
            date('Ymd').
            $this->getCustomerAbbr().
            sprintf("%'.05d", $this->calculateCurrentValue());
    }
}