<?php

namespace ABCSolutionsCustomOrderNumberObserver;

use MagentoFrameworkEventObserver;
use MagentoFrameworkEventObserverInterface;
use MagentoSalesModelOrder;
use MagentoSalesModelOrderAddress;
use MagentoFrameworkAppResourceConnection;

class ChangeOrderId implements ObserverInterface
{

    /**
     * @var MagentoFrameworkAppConfigScopeConfigInterface
     */
    protected $scopeConfig;

    /**
     * @var MagentoFrameworkAppResourceConnection
     */
    protected $resource;

    /**
     * @var PsrLogLoggerInterface
     */
    protected $logger;

    /**
     * @var ABCSolutionsCustomOrderNumberModelOrderidFactory
     */
    protected $OrderidobjFactory;

    /**
     * @var MagentoSalesModelResourceModelOrderCollectionFactory
     */
    protected $_orderCollectionFactory;

     /** @var MagentoSalesModelOrderStatusHistoryFactory $historyFactory */
    protected $historyFactory;


    /** @var MagentoSalesModelOrderFactory $orderFactory */
    protected $orderFactory;


    public function __construct(
        PsrLogLoggerInterface $logger,
        ABCSolutionsCustomOrderNumberModelOrderidFactory $Orderidobj,
        ResourceConnection $resource,
        MagentoSalesModelResourceModelOrderCollectionFactory $orderCollectionFactory,
        MagentoFrameworkAppConfigScopeConfigInterface $scopeConfig,
        MagentoSalesModelOrderFactory $orderFactory,
        MagentoSalesModelOrderStatusHistoryFactory $historyFactory
    ) {
        $this->resource = $resource;
        $this->logger = $logger;
        $this->scopeConfig = $scopeConfig;
        $this->OrderidobjFactory = $Orderidobj;
        $this->_orderCollectionFactory = $orderCollectionFactory;
        $this->orderFactory = $orderFactory;
        $this->historyFactory = $historyFactory;
    }

    public function execute(Observer $observer)
    {

        try{
        if($this->scopeConfig->getValue('custom_orders/custom_order/active', MagentoStoreModelScopeInterface::SCOPE_STORE))
        {
            /** @var MagentoSalesModelOrder */
            $orderInstance = $observer->getOrder();

            $prefix = "";

            if($orderInstance->getCustomerGroupId() == 0){//Not Logged Customers
                $prefix = $this->scopeConfig->getValue('custom_orders/not_logged_grp/prefix', MagentoStoreModelScopeInterface::SCOPE_STORE);
            }elseif($orderInstance->getCustomerGroupId() == 1){ // Retails Customers
                $prefix = $this->scopeConfig->getValue('custom_orders/retail_grp/prefix', MagentoStoreModelScopeInterface::SCOPE_STORE);
            }elseif($orderInstance->getCustomerGroupId() == 2){ // MD Customers
                $prefix = $this->scopeConfig->getValue('custom_orders/md_grp/prefix', MagentoStoreModelScopeInterface::SCOPE_STORE);
            }elseif($orderInstance->getCustomerGroupId() == 3){ //DP Customers
                $prefix = $this->scopeConfig->getValue('custom_orders/dp_grp/prefix', MagentoStoreModelScopeInterface::SCOPE_STORE);
            }

            $OrderNumber = $orderInstance->getIncrementId();

            if (strpos($OrderNumber, $prefix) !== false) {
                //return $this;
                file_put_contents('ChangeOrderId.txt',print_r("n" . ' => ' . $OrderNumber,true),FILE_APPEND);
            }else{

                $randomNumber = mt_rand(10000000,99999999);
                $incNo = $prefix . $randomNumber;
                if($this->getSalesOrderCollection($incNo)){
                    $orderIdObj = $this->OrderidobjFactory->create()->load(1);

                    if(!$orderIdObj->getStartup()){
                        $orderIdObj = $this->OrderidobjFactory->create();
                        $orderIdObj->setData(array("startup"=>$randomNumber,"currentid"=>$randomNumber))->save();
                    }
                    else{
                        if($orderIdObj->getData("startup") != $randomNumber){
                            $orderIdObj->setStartup($randomNumber);
                            $orderIdObj->setCurrentid($randomNumber);
                            $orderIdObj->save();
                        }
                        else{
                            $randomNumber = (int)$orderIdObj->getData("currentid") + 1;
                            $orderIdObj->setCurrentid($randomNumber);
                            $orderIdObj->save();
                        }

                    }

                    $orderInstance = $observer->getOrder();
                    $orderInstance->setData("increment_id",$incNo)->save();

                    /* Order Comments and PO Number Starts */
                     $order_id = $orderInstance->getIncrementId();

                    /** @param MagentoSalesModelOrderFactory $order */
                    $order = $this->orderFactory->create()->load($orderInstance->getId());

                    $payment = $order->getPayment();
                    $method = $payment->getMethodInstance();
                    $methodTitle = $method->getTitle();

                    if($methodTitle == "PayPal"){

                        if(isset($_SESSION['po_number'])){
                            $po_number = $_SESSION['po_number'];
                            unset($_SESSION['po_number']);
                        }

                        if(isset($_SESSION['comments_note'])){
                            $comment = $_SESSION['comments_note'];
                            // remove any HTML tags
                            $comment = strip_tags($comment);
                            unset($_SESSION['comments_note']);
                        }

                        $order->setData('customer_note',$comment);
                        $order->setData('po_number',$po_number);
                        $order->save();

                        // make sure $order exists
                        if ($order->getData('entity_id')) {

                            /** @param string $status */
                            $status = $order->getData('status');

                            /** @param MagentoSalesModelOrderStatusHistoryFactory $history */
                            $history = $this->historyFactory->create();

                            // set comment history data
                            $history->setData('comment', $comment);
                            $history->setData('parent_id', $order->getId());
                            $history->setData('is_visible_on_front', 1);
                            $history->setData('is_customer_notified', 0);
                            $history->setData('entity_name', 'order');
                            $history->setData('status', $status);
                            $history->save();
                        }
                    }
                }
            }
        }
        } catch (Exception $e) {
                     file_put_contents('CustomOrderNumber.txt',print_r("n" . $e->getMessage(),true),FILE_APPEND);
                }
    }

    public function getSalesOrderCollection($randomNumber){

        $orderCollection = $this->_orderCollectionFactory->create()->addAttributeToSelect('*');
        $orderCount = count($orderCollection) - 1;
        $i = 0;
        foreach($orderCollection as $order){
            if($order->getIncrementId() == $randomNumber){
                $this->getSalesOrderCollection($randomNumber);
            }else{
                if($orderCount == $i){
                    return true;
                }
            }
            $i++;
        }
    }
}