@php
    $data = [
        'merchant_id'      => env('PF_MERCHANT_ID'),
        'merchant_key'     => env('PF_MERCHANT_KEY'),
        'return_url'       => env('PF_RETURN_URL'),
        'cancel_url'       => env('PF_CANCEL_URL'),
        'notify_url'       => env('PF_ITN_URL'),
        'm_payment_id'     => request()->cookie('order_id'),
        'amount'           => number_format(request()->cookie('amount'), 2, '.', ''),
        'item_name'        => request()->cookie('item_name')
    ];

    function generateSignature($data, $passPhrase = null) {
        $pfOutput = '';
        foreach( $data as $key => $val ) {
            if($val !== '') {
                $pfOutput .= $key .'='. urlencode( trim( $val ) ) .'&';
            }
        }
        $getString = substr( $pfOutput, 0, -1 );
        if( $passPhrase !== null ) {
            $getString .= '&passphrase='. urlencode( trim( $passPhrase ) );
        }
        return md5( $getString );
    }

    $signature = generateSignature($data, env('PAYFAST_PASSPHRASE'));

    // Choose environment
    $payfast_url = env('PAYFAST_TESTING') || is_null(env('PAYFAST_TESTING'))
        ? "https://sandbox.payfast.co.za/eng/process"
        : "https://www.payfast.co.za/eng/process";
@endphp

<form id="payfast-pay-form" action="{{ $payfast_url }}" method="POST">
    @csrf
    @foreach ($data as $key => $value)
        <input type="hidden" name="{{ $key }}" value="{{ $value }}">
    @endforeach
    <input type="hidden" name="signature" value="{{ $signature }}">
</form>

<script>
    setTimeout(() => {
        document.getElementById('payfast-pay-form').submit();
    }, 500);
</script>