@extends('layouts.user')

@section('title','Black Belt Certificate')

@section('content')
<div class="content">
    <div class="pb-5">
        <div class="row g-4">
            <div class="col-12">
                <div class="mb-6">
                    <h2 class="mb-2">Black Belt Certificate</h2>
                    <h5 class="text-body-tertiary fw-semibold">Apply, pay and download your Black Belt certification
                    </h5>
                </div>

                <div class="card mb-4">
                    <div class="card-header d-flex flex-wrap justify-content-between align-items-center gap-2">
                        <h5 class="mb-0">Application & Payment</h5>
                        <div class="d-flex gap-2">

                            @if(auth()->user()->it_belt_payment === 1)
                            <button type="button" class="btn btn-phoenix-primary btn-sm "
                                onclick="downloadCertificate({{auth()->user()->id}}, this)">
                                <i class="uil uil-download"></i> Download Certificate
                            </button>
                            @else
                            <button type="button" class="btn btn-phoenix-primary btn-sm "
                                onclick="showPaymentSection()">
                                <i class="uil uil-download"></i> Get Black Belt Certificate
                            </button>
                            @endif
                        </div>
                    </div>
                    <div class="card-body">
                        @if(auth()->user()->primary_profile && in_array(auth()->user()->approved, [0,1]) && auth()->user()->paid == 1)
                            <div class="card border-0 bg-light d-none shadow-sm" id="payment_for_bb_certificate_sec_1">
                                <div
                                    class="card-header bg-phoenix-primary text-white d-flex justify-content-between align-items-center py-3 px-4 rounded-top">
                                    <div class="d-flex align-items-center gap-2">
                                        <span
                                            class="phoenix-icon bg-white text-phoenix-primary rounded-circle d-flex align-items-center justify-content-center"
                                            style="width:40px;height:40px;font-size:1.5rem;"><i
                                                class="uil uil-award"></i></span>
                                        <h5 class="mb-0 fw-bold">Black Belt Certificate Payment</h5>
                                    </div>
                                    <button type="button" class="btn btn-sm btn-outline-danger rounded-pill px-3 py-1 ms-2"
                                        aria-label="Close"
                                        onclick="hidePaymentSection()">
                                        <i class="uil uil-times"></i> Close
                                    </button>
                                </div>
                                <div class="card-body py-4 px-4 bg-phoenix-gray-100">
                                    <div
                                        class="alert alert-warning border-0 shadow-sm mb-4 d-flex align-items-center gap-2">
                                        <span
                                            class="phoenix-icon bg-phoenix-danger text-white rounded-circle d-flex align-items-center justify-content-center"
                                            style="width:32px;height:32px;font-size:1.25rem;"><i
                                                class="uil uil-exclamation-triangle"></i></span>
                                        <div>
                                            <strong>Important:</strong> Please do not refresh or close the page while the
                                            payment is being completed.<br>
                                            After payment via UPI app, return to this page and wait for <strong>10
                                                seconds</strong> for confirmation.
                                        </div>
                                    </div>

                                    <div class="row justify-content-center mb-4">
                                        @foreach ($payment_gateways as $payment_gateway)
                                        <div class="col-auto">
                                            <img src="/{{ $payment_gateway->img_path }}" height="50" width="150"
                                                class="img-fluid rounded shadow-sm border border-phoenix-primary" />
                                        </div>
                                        @endforeach
                                    </div>
                                    <div class="row justify-content-center mb-4">
                                        <div class="col-auto">
                                            <h6 class="text-phoenix-warning mb-3"> Payment Gateway Taxes <span
                                                    class="fw-bold">2.5%</span></h6>
                                        </div>
                                    </div>
                                    <form action="{{ url('certificate-payment') }}" method="post"
                                        id="certificatePaymentForm1" class="text-center">
                                        @csrf
                                        @if(isset($razorpay_order) && !empty($razorpay_order))
                                        <script src="https://checkout.razorpay.com/v1/checkout.js"
                                            data-key="{{ env('RAZORPAY_KEY') }}" data-amount="10000"
                                            data-buttontext="Proceed to Pay" data-name="India Taekwondo"
                                            data-description="India Taekwondo"
                                            data-image="https://indiataekwondo.com/wp-content/uploads/2020/01/logo-1.png"
                                            data-order_id="{{ is_array($razorpay_order) ? $razorpay_order['id'] : $razorpay_order->id }}"
                                            data-notes.merchant_order_id="reg_id_{{ date('Y-m-d H:i:s') }}"
                                            data-notes.purpose="Black Belt Certificate" data-notes.purpose_id="2"
                                            data-notes.user_id="{{auth()->user()->id}}"
                                            data-prefill.name="{{ auth()->user()->fname }} {{ auth()->user()->lname }}"
                                            data-prefill.email="{{ auth()->user()->email }}"
                                            data-prefill.contact="{{ auth()->user()->mobile }}"
                                            data-theme.color="#ff7529"></script>
                                        @else
                                        <div class="alert alert-warning" role="alert">
                                            <i class="fas fa-exclamation-triangle me-2"></i>
                                            Payment gateway is currently unavailable. Please try again later or contact
                                            support.
                                        </div>
                                        @endif
                                    </form>
                                </div>
                            </div>
                        @endif

                    </div>

                </div>
            </div>
        </div>
    </div>
    @endsection

    @push('scripts')
    <script>
        // Helpers to avoid jQuery dependency on this page
        function showPaymentSection() {
            var el = document.getElementById('payment_for_bb_certificate_sec_1');
            if (el) {
                el.classList.remove('d-none');
                try {
                    const rect = el.getBoundingClientRect();
                    window.scrollTo({ top: rect.top + window.scrollY - 120, behavior: 'smooth' });
                } catch (e) {}
            }
        }

        function hidePaymentSection() {
            var el = document.getElementById('payment_for_bb_certificate_sec_1');
            if (el) {
                el.classList.add('d-none');
            }
        }

        // Placeholder JS wiring (can be replaced with dedicated module)
        (function () {
            const applyBtn = document.getElementById('bb_cert_apply_btn');
            const payBtn = document.getElementById('bb_cert_pay_btn');
            const downloadBtn = document.getElementById('bb_cert_download_btn');
            const statusText = document.getElementById('bb_cert_status_text');
            const timeline = document.getElementById('bb_cert_timeline');

            if (applyBtn) {
                applyBtn.addEventListener('click', () => {
                    statusText.textContent = 'Application Draft Saved (demo)';
                    payBtn.removeAttribute('disabled');
                    timeline.innerHTML = '<li>Application draft created just now.</li>';
                });
            }
            if (payBtn) {
                payBtn.addEventListener('click', () => {
                    statusText.textContent = 'Payment Completed (demo)';
                    downloadBtn.removeAttribute('disabled');
                    timeline.innerHTML += '<li>Payment processed just now.</li>';
                });
            }
            if (downloadBtn) {
                downloadBtn.addEventListener('click', () => {
                    alert('Demo: PDF download would trigger here.');
                });
            }
        })();

         // Enhanced certificate download function with error handling
        function downloadCertificate(userId, buttonElement) {
            if (!userId) {
                alert('Error: User ID not found. Please refresh the page and try again.');
                return;
            }

            // Show loading state
            const originalText = buttonElement.innerHTML;
            buttonElement.disabled = true;
            buttonElement.innerHTML = '<i class="fas fa-spinner fa-spin"></i> Generating Certificate...';

            // Create proper download URL using Laravel route helper
            const downloadUrl = '{{ url("get_certificate") }}/' + userId;
            
            // Create a temporary iframe for the download to handle errors gracefully
            const iframe = document.createElement('iframe');
            iframe.style.display = 'none';
            iframe.src = downloadUrl;
            
            // Error handling for the iframe
            iframe.onload = function() {
                // Check if the response is an error by checking content type
                try {
                    const doc = iframe.contentDocument || iframe.contentWindow.document;
                    if (doc.body && (doc.body.innerText.includes('error') || 
                                   doc.body.innerText.includes('Unauthorized') ||
                                   doc.body.innerText.includes('Failed'))) {
                        throw new Error(doc.body.innerText);
                    }
                } catch (e) {
                    // Cross-origin error or successful download - assume success if we can't read the content
                    console.log('Download completed or cross-origin response');
                }
                
                // Reset button after a delay
                setTimeout(() => {
                    buttonElement.disabled = false;
                    buttonElement.innerHTML = originalText;
                    
                    // Remove the iframe after download
                    if (iframe.parentNode) {
                        iframe.parentNode.removeChild(iframe);
                    }
                }, 2000);
            };

            iframe.onerror = function() {
                alert('Certificate download failed. Please check your internet connection and try again.');
                buttonElement.disabled = false;
                buttonElement.innerHTML = originalText;
                
                if (iframe.parentNode) {
                    iframe.parentNode.removeChild(iframe);
                }
            };

            // Add iframe to DOM to trigger download
            document.body.appendChild(iframe);

            // Fallback: Direct window location change after a delay
            setTimeout(() => {
                if (buttonElement.disabled) {
                    try {
                        window.location.href = downloadUrl;
                        buttonElement.disabled = false;
                        buttonElement.innerHTML = originalText;
                    } catch (error) {
                        console.error('Fallback download error:', error);
                        alert('Certificate download failed. Please contact support if the issue persists.');
                        buttonElement.disabled = false;
                        buttonElement.innerHTML = originalText;
                    }
                }
            }, 5000);
        }

        // Global error handler for certificate downloads
        window.addEventListener('error', function(event) {
            if (event.filename && event.filename.includes('get_certificate')) {
                console.error('Certificate download error:', event.error);
                alert('Certificate download encountered an error. Please try again or contact support.');
            }
        });
    </script>
    @endpush