<?php

namespace App\Traits\PaymentGateway;

use App\Constants\PaymentGatewayConst;
use App\Models\TemporaryData;
use Exception;
use Srmklive\PayPal\Services\PayPal as PayPalClient;
use Illuminate\Support\Str;

trait Paypal
{
    public function paypalInit($output = null) {
        if(!$output) $output = $this->output;
        $credentials = $this->getPaypalCredentials($output);
        $config = $this->paypalConfig($credentials,$output['amount']);
        $paypalProvider = new PayPalClient;
        $paypalProvider->setApiCredentials($config);
        $paypalProvider->getAccessToken();
        $redirection = $this->getRedirection();
        $url_parameter = $this->getUrlParams();

        

        $response = $paypalProvider->createOrder([
            "intent" => "CAPTURE",
            "application_context" => [
                "return_url" => $this->setGatewayRoute($redirection['return_url'],PaymentGatewayConst::PAYPAL,$url_parameter),
                "cancel_url" => $this->setGatewayRoute($redirection['cancel_url'],PaymentGatewayConst::PAYPAL,$url_parameter),
            ],
            "purchase_units" => [
                0 => [
                    "amount" => [
                        "currency_code" => $output['amount']->sender_cur_code ?? '',
                        "value" => $output['amount']->total_amount ? number_format($output['amount']->total_amount,2,'.','') : 0,
                    ]
                ]
            ]
        ]);

        if(isset($response['id']) && $response['id'] != "" && isset($response['status']) && $response['status'] == "CREATED" && isset($response['links']) && is_array($response['links'])) {
            foreach($response['links'] as $item) {
                if($item['rel'] == "approve") {
                    $this->paypalJunkInsert($response);
                    if(request()->expectsJson()) {
                        $this->output['redirection_response']   = $response;
                        $this->output['redirect_links']         = $response['links'];
                        $this->output['redirect_url']           = $item['href'];
                        return $this->get();
                        break;
                    }
                    return redirect()->away($item['href']);
                    break;
                }
            }
        }

        if(isset($response['error']) && is_array($response['error'])) {
            throw new Exception($response['error']['message']);
        }

        throw new Exception("Something went wrong! Please try again.");
    }

    public function getPaypalCredentials($output) {
        $gateway = $output['gateway'] ?? null;
        if(!$gateway) throw new Exception("Payment gateway not available");
        $client_id_sample = ['api key','api_key','client id','primary key'];
        $client_secret_sample = ['client_secret','client secret','secret','secret key','secret id'];

        $client_id = '';
        $outer_break = false;
        foreach($client_id_sample as $item) {
            if($outer_break == true) {
                break;
            }
            $modify_item = $this->paypalPlainText($item);
            foreach($gateway->credentials ?? [] as $gatewayInput) {
                $label = $gatewayInput->label ?? "";
                $label = $this->paypalPlainText($label);

                if($label == $modify_item) {
                    $client_id = $gatewayInput->value ?? "";
                    $outer_break = true;
                    break;
                }
            }
        }

        $secret_id = '';
        $outer_break = false;
        foreach($client_secret_sample as $item) {
            if($outer_break == true) {
                break;
            }
            $modify_item = $this->paypalPlainText($item);
            foreach($gateway->credentials ?? [] as $gatewayInput) {
                $label = $gatewayInput->label ?? "";
                $label = $this->paypalPlainText($label);

                if($label == $modify_item) {
                    $secret_id = $gatewayInput->value ?? "";
                    $outer_break = true;
                    break;
                }
            }
        }

        $mode = $gateway->env;
        
        $paypal_register_mode = [
            PaymentGatewayConst::ENV_SANDBOX => "sandbox",
            PaymentGatewayConst::ENV_PRODUCTION => "live",
        ];

        if(array_key_exists($mode,$paypal_register_mode)) {
            $mode = $paypal_register_mode[$mode];
        }else {
            $mode = "sandbox";
        }

        return (object) [
            'client_id'     => $client_id,
            'client_secret' => $secret_id,
            'mode'          => $mode,
        ];

    }

    public function paypalPlainText($string) {
        $string = Str::lower($string);
        return preg_replace("/[^A-Za-z0-9]/","",$string);
    }

    public static function paypalConfig($credentials, $amount_info)
    {
        $config = [
            'mode'    => $credentials->mode ?? 'sandbox',
            'sandbox' => [
                'client_id'         => $credentials->client_id ?? "",
                'client_secret'     => $credentials->client_secret ?? "",
                'app_id'            => "APP-80W284485P519543T",
            ],
            'live' => [
                'client_id'         => $credentials->client_id ?? "",
                'client_secret'     => $credentials->client_secret ?? "",
                'app_id'            => "",
            ],
            'payment_action' => 'Sale', // Can only be 'Sale', 'Authorization' or 'Order'
            'currency'       => $amount_info->sender_cur_code ?? "",
            'notify_url'     => "", // Change this accordingly for your application.
            'locale'         => 'en_US', // force gateway language  i.e. it_IT, es_ES, en_US ... (for express checkout only)
            'validate_ssl'   => true, // Validate SSL when creating api client.
        ];
        return $config;
    }

    public function paypalJunkInsert($response) {

        $output = $this->output;
        $data = [
            'gateway'       => $output['gateway']->id,
            'currency'      => $output['currency']->id,
            'amount'        => json_decode(json_encode($output['amount']),true),
            'response'      => $response,
            'wallet_table'  => $output['wallet']->getTable(),
            'wallet_id'     => $output['wallet']->id,
            'creator_table' => auth()->guard(get_auth_guard())->user()->getTable(),
            'creator_id'    => auth()->guard(get_auth_guard())->user()->id,
            'creator_guard' => get_auth_guard(),
        ];

        return TemporaryData::create([
            'type'          => PaymentGatewayConst::TYPEADDMONEY,
            'identifier'    => $response['id'],
            'data'          => $data,
        ]);
    }

    public function paypalSuccess($output = null) { 
        if(!$output) $output = $this->output;
        $token = $this->output['tempData']['identifier'] ?? "";

        $credentials = $this->getPaypalCredentials($output);
        $config = $this->paypalConfig($credentials,$output['amount']);
        $paypalProvider = new PayPalClient;
        $paypalProvider->setApiCredentials($config);
        $paypalProvider->getAccessToken();
        $response = $paypalProvider->capturePaymentOrder($token);

        if(isset($response['status']) && $response['status'] == 'COMPLETED') {
            return $this->paypalPaymentCaptured($response,$output);
        }else {
            throw new Exception('Transaction failed. Payment captured failed.');
        }

        if(empty($token)) throw new Exception('Transaction failed. Record didn\'t saved properly. Please try again.');
    }

    public function paypalPaymentCaptured($response,$output) {
        // payment successfully captured record saved to database
        $output['capture'] = $response;
        try{
            $this->createTransaction($output);
        }catch(Exception $e) {
            throw new Exception($e->getMessage());
        }

        return true;
    }

    public static function isPaypal($gateway) {
        $search_keyword = ['paypal','paypal gateway','paypal payment gateway','gateway paypal','paypal automatic gateway','paypal automatic'];
        $gateway_name = $gateway->name;

        $search_text = Str::lower($gateway_name);
        $search_text = preg_replace("/[^A-Za-z0-9]/","",$search_text);
        foreach($search_keyword as $keyword) {
            $keyword = Str::lower($keyword);
            $keyword = preg_replace("/[^A-Za-z0-9]/","",$keyword);
            if($keyword == $search_text) {
                return true;
                break;
            }
        }
        return false;
    }
}

• [F] Flutterwave.php
  Delete
• [F] Paypal.php
  Delete
• [F] PaystackGateway.php
  Delete
• [F] Razorpay.php
  Delete
• [F] SslCommerz.php
  Delete
• [F] Stripe.php
  Delete

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