<?php

namespace App\Http\Controllers\User\Payment;

use App\Models\Cart;
use App\Models\User;
use App\Models\Deposit;
use App\Models\Coupon;
use App\Models\Product;
use App\Models\Currency;
use App\Models\OrderTrack;
use App\Models\VendorOrder;
use App\Models\Notification;
use Illuminate\Http\Request;
use App\Classes\GeniusMailer;
use App\Models\Generalsetting;
use App\Models\UserNotification;
use App\Http\Controllers\Controller;
use App\Models\Pagesetting;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Session;
use App\Models\Shipping;
use App\Models\Package;
use Illuminate\Support\Str;

class PaytmController extends Controller
{
     /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        //
    }
    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {

    }
    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        
        if(!$request->has('deposit_number')){
            return response()->json(['status' => false, 'data' => [], 'error' => 'Invalid Request']);
        }
        
        $deposit_number = $request->deposit_number;
        $order = Deposit::where('deposit_number',$deposit_number)->first();
        $curr = Currency::where('name','=',$order->currency_code)->first();
       if($curr->name != "INR")
        {
            return redirect()->back()->with('unsuccess','Please Select INR Currency For Paytm.');
        }
        $input = $request->all();
        $settings = Generalsetting::findOrFail(1);
        $item_amount = $order->amount * $curr->value;
   

	    $data_for_request = $this->handlePaytmRequest( $order->deposit_number, $item_amount );
	    $paytm_txn_url = 'https://securegw-stage.paytm.in/theia/processTransaction';
	    $paramList = $data_for_request['paramList'];
	    $checkSum = $data_for_request['checkSum'];
	    return view( 'front.paytm-merchant-form', compact( 'paytm_txn_url', 'paramList', 'checkSum' ) );
    }

	public function handlePaytmRequest( $order_id, $amount ) {
        $gs = Generalsetting::first();

		// Load all functions of encdec_paytm.php and config-paytm.php
		$this->getAllEncdecFunc();
		// $this->getConfigPaytmSettings();
		$checkSum = "";
		$paramList = array();
		// Create an array having all required parameters for creating checksum.
		$paramList["MID"] = $gs->paytm_merchant;
		$paramList["ORDER_ID"] = $order_id;
		$paramList["CUST_ID"] = $order_id;
		$paramList["INDUSTRY_TYPE_ID"] = $gs->paytm_industry;
		$paramList["CHANNEL_ID"] = 'WEB';
		$paramList["TXN_AMOUNT"] = $amount;
		$paramList["WEBSITE"] = $gs->paytm_website;
		$paramList["CALLBACK_URL"] = route('api.user.paytm.notify');
		$paytm_merchant_key = $gs->paytm_secret;
		//Here checksum string will return by getChecksumFromArray() function.
		$checkSum = getChecksumFromArray( $paramList, $paytm_merchant_key );
		return array(
			'checkSum' => $checkSum,
			'paramList' => $paramList
		);
	}


	function getAllEncdecFunc() {
		function encrypt_e($input, $ky) {
			$key   = html_entity_decode($ky);
			$iv = "@@@@&&&&####$$$$";
			$data = openssl_encrypt ( $input , "AES-128-CBC" , $key, 0, $iv );
			return $data;
		}
		function decrypt_e($crypt, $ky) {
			$key   = html_entity_decode($ky);
			$iv = "@@@@&&&&####$$$$";
			$data = openssl_decrypt ( $crypt , "AES-128-CBC" , $key, 0, $iv );
			return $data;
		}
		function pkcs5_pad_e($text, $blocksize) {
			$pad = $blocksize - (strlen($text) % $blocksize);
			return $text . str_repeat(chr($pad), $pad);
		}
		function pkcs5_unpad_e($text) {
			$pad = ord($text{strlen($text) - 1});
			if ($pad > strlen($text))
				return false;
			return substr($text, 0, -1 * $pad);
		}
		function generateSalt_e($length) {
			$random = "";
			srand((double) microtime() * 1000000);
			$data = "AbcDE123IJKLMN67QRSTUVWXYZ";
			$data .= "aBCdefghijklmn123opq45rs67tuv89wxyz";
			$data .= "0FGH45OP89";
			for ($i = 0; $i < $length; $i++) {
				$random .= substr($data, (rand() % (strlen($data))), 1);
			}
			return $random;
		}
		function checkString_e($value) {
			if ($value == 'null')
				$value = '';
			return $value;
		}
		function getChecksumFromArray($arrayList, $key, $sort=1) {
			if ($sort != 0) {
				ksort($arrayList);
			}
			$str = getArray2Str($arrayList);
			$salt = generateSalt_e(4);
			$finalString = $str . "|" . $salt;
			$hash = hash("sha256", $finalString);
			$hashString = $hash . $salt;
			$checksum = encrypt_e($hashString, $key);
			return $checksum;
		}
		function getChecksumFromString($str, $key) {
			$salt = generateSalt_e(4);
			$finalString = $str . "|" . $salt;
			$hash = hash("sha256", $finalString);
			$hashString = $hash . $salt;
			$checksum = encrypt_e($hashString, $key);
			return $checksum;
		}
		function verifychecksum_e($arrayList, $key, $checksumvalue) {
			$arrayList = removeCheckSumParam($arrayList);
			ksort($arrayList);
			$str = getArray2StrForVerify($arrayList);
			$paytm_hash = decrypt_e($checksumvalue, $key);
			$salt = substr($paytm_hash, -4);
			$finalString = $str . "|" . $salt;
			$website_hash = hash("sha256", $finalString);
			$website_hash .= $salt;
			$validFlag = "FALSE";
			if ($website_hash == $paytm_hash) {
				$validFlag = "TRUE";
			} else {
				$validFlag = "FALSE";
			}
			return $validFlag;
		}
		function verifychecksum_eFromStr($str, $key, $checksumvalue) {
			$paytm_hash = decrypt_e($checksumvalue, $key);
			$salt = substr($paytm_hash, -4);
			$finalString = $str . "|" . $salt;
			$website_hash = hash("sha256", $finalString);
			$website_hash .= $salt;
			$validFlag = "FALSE";
			if ($website_hash == $paytm_hash) {
				$validFlag = "TRUE";
			} else {
				$validFlag = "FALSE";
			}
			return $validFlag;
		}
		function getArray2Str($arrayList) {
			$findme   = 'REFUND';
			$findmepipe = '|';
			$paramStr = "";
			$flag = 1;
			foreach ($arrayList as $key => $value) {
				$pos = strpos($value, $findme);
				$pospipe = strpos($value, $findmepipe);
				if ($pos !== false || $pospipe !== false)
				{
					continue;
				}
				if ($flag) {
					$paramStr .= checkString_e($value);
					$flag = 0;
				} else {
					$paramStr .= "|" . checkString_e($value);
				}
			}
			return $paramStr;
		}
		function getArray2StrForVerify($arrayList) {
			$paramStr = "";
			$flag = 1;
			foreach ($arrayList as $key => $value) {
				if ($flag) {
					$paramStr .= checkString_e($value);
					$flag = 0;
				} else {
					$paramStr .= "|" . checkString_e($value);
				}
			}
			return $paramStr;
		}
		function redirect2PG($paramList, $key) {
			$hashString = getchecksumFromArray($paramList, $key);
			$checksum = encrypt_e($hashString, $key);
		}
		function removeCheckSumParam($arrayList) {
			if (isset($arrayList["CHECKSUMHASH"])) {
				unset($arrayList["CHECKSUMHASH"]);
			}
			return $arrayList;
		}
		function getTxnStatus($requestParamList) {
			return callAPI(PAYTM_STATUS_QUERY_URL, $requestParamList);
		}
		function getTxnStatusNew($requestParamList) {
			return callNewAPI(PAYTM_STATUS_QUERY_NEW_URL, $requestParamList);
		}
		function initiateTxnRefund($requestParamList) {
			$CHECKSUM = getRefundChecksumFromArray($requestParamList,PAYTM_MERCHANT_KEY,0);
			$requestParamList["CHECKSUM"] = $CHECKSUM;
			return callAPI(PAYTM_REFUND_URL, $requestParamList);
		}
		function callAPI($apiURL, $requestParamList) {
			$jsonResponse = "";
			$responseParamList = array();
			$JsonData =json_encode($requestParamList);
			$postData = 'JsonData='.urlencode($JsonData);
			$ch = curl_init($apiURL);
			curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
			curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);
			curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);
			curl_setopt($ch, CURLOPT_HTTPHEADER, array(
					'Content-Type: application/json',
					'Content-Length: ' . strlen($postData))
			);
			$jsonResponse = curl_exec($ch);
			$responseParamList = json_decode($jsonResponse,true);
			return $responseParamList;
		}
		function callNewAPI($apiURL, $requestParamList) {
			$jsonResponse = "";
			$responseParamList = array();
			$JsonData =json_encode($requestParamList);
			$postData = 'JsonData='.urlencode($JsonData);
			$ch = curl_init($apiURL);
			curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
			curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);
			curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);
			curl_setopt($ch, CURLOPT_HTTPHEADER, array(
					'Content-Type: application/json',
					'Content-Length: ' . strlen($postData))
			);
			$jsonResponse = curl_exec($ch);
			$responseParamList = json_decode($jsonResponse,true);
			return $responseParamList;
		}
		function getRefundChecksumFromArray($arrayList, $key, $sort=1) {
			if ($sort != 0) {
				ksort($arrayList);
			}
			$str = getRefundArray2Str($arrayList);
			$salt = generateSalt_e(4);
			$finalString = $str . "|" . $salt;
			$hash = hash("sha256", $finalString);
			$hashString = $hash . $salt;
			$checksum = encrypt_e($hashString, $key);
			return $checksum;
		}
		function getRefundArray2Str($arrayList) {
			$findmepipe = '|';
			$paramStr = "";
			$flag = 1;
			foreach ($arrayList as $key => $value) {
				$pospipe = strpos($value, $findmepipe);
				if ($pospipe !== false)
				{
					continue;
				}
				if ($flag) {
					$paramStr .= checkString_e($value);
					$flag = 0;
				} else {
					$paramStr .= "|" . checkString_e($value);
				}
			}
			return $paramStr;
		}
		function callRefundAPI($refundApiURL, $requestParamList) {
			$jsonResponse = "";
			$responseParamList = array();
			$JsonData =json_encode($requestParamList);
			$postData = 'JsonData='.urlencode($JsonData);
			$ch = curl_init($apiURL);
			curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);
			curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);
			curl_setopt($ch, CURLOPT_URL, $refundApiURL);
			curl_setopt($ch, CURLOPT_POST, true);
			curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			$headers = array();
			$headers[] = 'Content-Type: application/json';
			curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
			$jsonResponse = curl_exec($ch);
			$responseParamList = json_decode($jsonResponse,true);
			return $responseParamList;
		}
	}
	/**
	 * Config Paytm Settings from config_paytm.php file of paytm kit
	 */
	function getConfigPaytmSettings() {
    $gs = Generalsetting::first();

    if ($gs->paytm_mode == 'sandbox') {
      define('PAYTM_ENVIRONMENT', 'TEST'); // PROD
    } elseif ($gs->paytm_mode == 'live') {
      define('PAYTM_ENVIRONMENT', 'PROD'); // PROD
    }

		define('PAYTM_MERCHANT_KEY', $gs->paytm_secret); //Change this constant's value with Merchant key downloaded from portal
		define('PAYTM_MERCHANT_MID', $gs->paytm_merchant); //Change this constant's value with MID (Merchant ID) received from Paytm
		define('PAYTM_MERCHANT_WEBSITE', $gs->paytm_website); //Change this constant's value with Website name received from Paytm
		$PAYTM_STATUS_QUERY_NEW_URL='https://securegw-stage.paytm.in/merchant-status/getTxnStatus';
		$PAYTM_TXN_URL='https://securegw-stage.paytm.in/theia/processTransaction';
		if (PAYTM_ENVIRONMENT == 'PROD') {
			$PAYTM_STATUS_QUERY_NEW_URL='https://securegw.paytm.in/merchant-status/getTxnStatus';
			$PAYTM_TXN_URL='https://securegw.paytm.in/theia/processTransaction';
		}
		define('PAYTM_REFUND_URL', '');
		define('PAYTM_STATUS_QUERY_URL', $PAYTM_STATUS_QUERY_NEW_URL);
		define('PAYTM_STATUS_QUERY_NEW_URL', $PAYTM_STATUS_QUERY_NEW_URL);
		define('PAYTM_TXN_URL', $PAYTM_TXN_URL);
    }

	public function paytmCallback( Request $request ) {
	    
	    
        
		$order_id = $request['ORDERID'];
		 $order = Deposit::where( 'deposit_number', $order_id )->first();
		  $cancel_url = route('user.deposit.send',$order->order_number);
		if ( 'TXN_SUCCESS' === $request['STATUS'] ) {
			$transaction_id = $request['TXNID'];
            if (isset($order)) {
                $data['txnid'] = $transaction_id;
                $data['payment_status'] = 'Completed';
                $data['method'] = 'Paytm';
                $order->update($data);
            
            if ($order->status == 1) {
            $transaction = new \App\Models\Transaction;
            $transaction->txn_number = Str::random(3).substr(time(), 6,8).Str::random(3);
            $transaction->user_id = $order->user_id;
            $transaction->amount = $order->amount;
            $transaction->user_id = $order->user_id;
            $transaction->currency_sign = $order->currency;
            $transaction->currency_code = $order->currency_code;
            $transaction->currency_value= $order->currency_value;
            $transaction->method = $order->method;
            $transaction->txnid = $order->txnid;
            $transaction->details = 'Payment Deposit';
            $transaction->type = 'plus';
            $transaction->save();
        }
        
                
            }
            return redirect(route('user.success',1));

		} else if( 'TXN_FAILURE' === $request['STATUS'] ){
           
            return redirect($cancel_url);
		}
    }

}
