<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>DeDoc - Payment Gateway</title>
    <link href="https://unpkg.com/aos@2.3.1/dist/aos.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css">
    <!-- Add SweetAlert2 CSS -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/sweetalert2@11.7.32/dist/sweetalert2.min.css">
    <style>
        :root {
            --primary-color: #4a90e2;
            --secondary-color: #9b59b6;
            --success-color: #2ecc71;
            --warning-color: #f1c40f;
            --danger-color: #e74c3c;
            --dark-color: #2c3e50;
            --light-color: #ecf0f1;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background: linear-gradient(135deg, #f5f7fa, #e8edf5);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .payment-container {
            max-width: 800px;
            width: 100%;
            background: white;
            border-radius: 20px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }

        .payment-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 30px;
            text-align: center;
        }

        .payment-header h1 {
            font-size: 24px;
            margin-bottom: 10px;
        }

        .payment-header p {
            opacity: 0.9;
            font-size: 16px;
        }

        .subscription-plans {
            padding: 30px;
            border-bottom: 1px solid #eee;
        }

        .plan-selection {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .plan-option {
            border: 2px solid #eee;
            border-radius: 15px;
            padding: 25px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            background: white;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        .plan-option::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .plan-option:hover {
            border-color: var(--primary-color);
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        }

        .plan-option:hover::before {
            opacity: 1;
        }

        .plan-option.selected {
            border-color: var(--primary-color);
            background: rgba(74, 144, 226, 0.05);
            box-shadow: 0 8px 25px rgba(74, 144, 226, 0.15);
        }

        .plan-option.selected::before {
            opacity: 1;
        }

        .plan-option h3 {
            color: var(--dark-color);
            margin-bottom: 15px;
            font-size: 1.5rem;
        }

        .plan-price {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 15px;
            text-shadow: 0 2px 10px rgba(74, 144, 226, 0.1);
        }

        .plan-duration {
            color: #666;
            font-size: 1rem;
            margin-bottom: 20px;
        }

        .plan-features {
            margin: 20px 0;
            text-align: left;
            padding: 0 10px;
        }

        .plan-features li {
            margin: 10px 0;
            color: #666;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .plan-features i {
            color: var(--success-color);
            font-size: 1.1rem;
        }

        .select-plan-btn {
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 25px;
            font-weight: 600;
            margin-top: 15px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            opacity: 0.9;
            width: 100%;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(74, 144, 226, 0.2);
            font-size: 1rem;
            letter-spacing: 0.5px;
        }

        .select-plan-btn::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }

        .select-plan-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(74, 144, 226, 0.4);
            opacity: 1;
            background: linear-gradient(45deg, #5a9ee8, #a66bc0);
        }

        .select-plan-btn:active {
            transform: translateY(-1px) scale(0.98);
            box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
            transition: all 0.1s ease;
        }

        .select-plan-btn:active::before {
            width: 300px;
            height: 300px;
        }

        .select-plan-btn:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.3), 0 8px 25px rgba(74, 144, 226, 0.4);
        }

        .plan-option.selected .select-plan-btn {
            opacity: 1;
            transform: scale(1.05);
            background: linear-gradient(45deg, #2ecc71, #27ae60);
            box-shadow: 0 8px 25px rgba(46, 204, 113, 0.4);
        }

        .plan-option.selected .select-plan-btn:hover {
            background: linear-gradient(45deg, #27ae60, #229954);
            transform: scale(1.05) translateY(-3px);
        }

        .plan-option:hover .select-plan-btn {
            opacity: 1;
        }

        .popular-badge {
            position: absolute;
            top: 15px;
            right: -35px;
            background: linear-gradient(45deg, #ff4081, #ff6b6b);
            color: white;
            padding: 8px 40px;
            transform: rotate(45deg);
            font-size: 0.8rem;
            font-weight: 500;
            box-shadow: 0 2px 10px rgba(255, 64, 129, 0.2);
        }

        .payment-form {
            padding: 30px;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            margin: 20px;
        }

        .form-group {
            margin-bottom: 25px;
            position: relative;
        }

        .form-group label {
            display: block;
            margin-bottom: 10px;
            color: var(--dark-color);
            font-weight: 500;
            font-size: 1.1rem;
        }

        .form-group input {
            width: 100%;
            padding: 15px;
            border: 2px solid #eee;
            border-radius: 12px;
            font-size: 1rem;
            transition: all 0.3s ease;
            background: white;
        }

        .form-group input:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
            outline: none;
        }

        .form-group i {
            position: absolute;
            right: 15px;
            top: 45px;
            color: #666;
        }

        .btn-pay {
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 18px 30px;
            border-radius: 12px;
            font-size: 1.2rem;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: all 0.3s ease;
            margin-top: 20px;
            box-shadow: 0 4px 15px rgba(74, 144, 226, 0.2);
        }

        .btn-pay:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(74, 144, 226, 0.3);
        }

        .secure-badge {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-top: 25px;
            color: #666;
            font-size: 1rem;
            padding: 15px;
            background: rgba(46, 204, 113, 0.1);
            border-radius: 10px;
        }

        .secure-badge i {
            color: var(--success-color);
            font-size: 1.2rem;
        }

        @media (max-width: 768px) {
            .plan-selection {
                grid-template-columns: 1fr;
                padding: 10px;
            }

            .payment-container {
                margin: 10px;
            }

            .payment-form {
                margin: 10px;
                padding: 20px;
            }

            .plan-option {
                padding: 20px;
            }

            .plan-price {
                font-size: 1.8rem;
            }

            .btn-pay {
                padding: 15px;
                font-size: 1.1rem;
            }
        }

        /* Loading Overlay Styles */
        .loading-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            z-index: 9999;
            justify-content: center;
            align-items: center;
            backdrop-filter: blur(5px);
        }

        .loading-spinner {
            width: 50px;
            height: 50px;
            border: 5px solid var(--light-color);
            border-top: 5px solid var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        .loading-text {
            color: white;
            margin-top: 20px;
            font-size: 18px;
            text-align: center;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .plan-option[data-plan="basic"],
        .plan-option[data-plan="standard"] {
            opacity: 0.7;
            pointer-events: none;
            cursor: not-allowed;
            position: relative;
        }

        .plan-option[data-plan="basic"]::after,
        .plan-option[data-plan="standard"]::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.1);
            z-index: 1;
        }

        .plan-option[data-plan="basic"] .select-plan-btn,
        .plan-option[data-plan="standard"] .select-plan-btn {
            background: #ccc;
            cursor: not-allowed;
            pointer-events: none;
        }

        .plan-option[data-plan="basic"] .popular-badge,
        .plan-option[data-plan="standard"] .popular-badge {
            opacity: 0.7;
        }
    </style>
</head>
<body>
    <!-- Add Loading Overlay -->
    <div class="loading-overlay">
        <div style="text-align: center;">
            <div class="loading-spinner"></div>
            <div class="loading-text">Processing Payment...</div>
        </div>
    </div>

    <div class="payment-container" data-aos="fade-up">
        <div class="payment-header">
            <h1>Choose Your Subscription</h1>
            <p>Select a plan and complete your payment securely with PayStack</p>
        </div>

        <div class="subscription-plans">
            <div class="plan-selection">
                <div class="plan-option" data-plan="basic" data-price="50">
                    <h3>Basic Plan</h3>
                    <div class="plan-price">NGN 50</div>
                    <div class="plan-duration">2 Hours Access</div>
                    <ul class="plan-features">
                        <li><i class="fas fa-check-circle"></i> Basic AI consultation</li>
                        <li><i class="fas fa-check-circle"></i> Quick symptom check</li>
                        <li><i class="fas fa-check-circle"></i> 2-hour access</li>
                    </ul>
                    <button class="select-plan-btn">This plan is currently unavailable</button>
                </div>
                <div class="plan-option" data-plan="standard" data-price="450">
                    <!-- <div class="popular-badge">Popular</div> -->
                    <h3>Standard Plan</h3>
                    <div class="plan-price">NGN 450</div>
                    <div class="plan-duration">1 Week Access</div>
                    <ul class="plan-features">
                        <li><i class="fas fa-check-circle"></i> Full AI consultation</li>
                        <li><i class="fas fa-check-circle"></i> Advanced symptom analysis</li>
                        <li><i class="fas fa-check-circle"></i> Week-long access</li>
                        <li><i class="fas fa-check-circle"></i> Priority support</li>
                    </ul>
                    <button class="select-plan-btn">This plan is currently unavailable</button>
                </div>
                <div class="plan-option" data-plan="premium" data-price="850">
                    <div class="popular-badge">Most Popular</div>
                    <h3>Premium Plan</h3>
                    <div class="plan-price">NGN 850</div>
                    <div class="plan-duration">2 Weeks Access</div>
                    <ul class="plan-features">
                        <li><i class="fas fa-check-circle"></i> Priority AI consultation</li>
                        <li><i class="fas fa-check-circle"></i> Comprehensive health tracking</li>
                        <li><i class="fas fa-check-circle"></i> 2-week access</li>
                        <li><i class="fas fa-check-circle"></i> 24/7 support access</li>
                    </ul>
                    <button class="select-plan-btn">Select Premium Plan</button>
                </div>
                <div class="plan-option" data-plan="pro" data-price="1600">
                    <h3>Pro Plan</h3>
                    <div class="plan-price">NGN 1,600</div>
                    <div class="plan-duration">1 Month Access</div>
                    <ul class="plan-features">
                        <li><i class="fas fa-check-circle"></i> VIP AI consultation</li>
                        <li><i class="fas fa-check-circle"></i> 24/7 premium support</li>
                        <li><i class="fas fa-check-circle"></i> Full feature access</li>
                        <li><i class="fas fa-check-circle"></i> Custom health reports</li>
                        <li><i class="fas fa-check-circle"></i> Family account support</li>
                    </ul>
                    <button class="select-plan-btn">Select Pro Plan</button>
                </div>
            </div>
        </div>

        <div class="payment-form">
            <form id="paymentForm">
                <div class="form-group">
                    <label>Email Address</label>
                    <input type="email" id="email-address" required placeholder="Enter your email address">
                    <i class="fas fa-envelope"></i>
                </div>
                <div class="form-group">
                    <label>Full Name</label>
                    <input type="text" id="full-name" required placeholder="Enter your full name">
                    <i class="fas fa-user"></i>
                </div>
                <div class="form-group">
                    <label>Phone Number</label>
                    <input type="tel" id="phone-number" required placeholder="Enter your phone number">
                    <i class="fas fa-phone"></i>
                </div>

                <button type="submit" class="btn-pay" onclick="payWithPaystack()">
                    <i class="fas fa-lock"></i> Pay Securely with PayStack
                </button>

                <div class="secure-badge">
                    <i class="fas fa-shield-alt"></i>
                    <span>Secured by PayStack - Your payment information is encrypted</span>
                </div>
            </form>
        </div>
    </div>

    <script src="https://unpkg.com/aos@2.3.1/dist/aos.js"></script>
    <script src="https://js.paystack.co/v2/inline.js"></script>
    <!-- Add SweetAlert2 JS -->
    <script src="https://cdn.jsdelivr.net/npm/sweetalert2@11.7.32/dist/sweetalert2.all.min.js"></script>
    <script>
        AOS.init({
            duration: 800,
            once: true
        });

        // Plan selection
        const planOptions = document.querySelectorAll('.plan-option');
        let selectedPlan = null;
        let selectedPrice = 0;

        planOptions.forEach(option => {
            const selectBtn = option.querySelector('.select-plan-btn');
            
            selectBtn.addEventListener('click', (e) => {
                e.preventDefault();
                
                // Add click feedback
                selectBtn.style.transform = 'scale(0.95)';
                setTimeout(() => {
                    selectBtn.style.transform = '';
                }, 150);
                
                // Remove selection from all plans
                planOptions.forEach(p => {
                    p.classList.remove('selected');
                    const btn = p.querySelector('.select-plan-btn');
                    btn.style.transform = '';
                });
                
                // Add selection to clicked plan
                option.classList.add('selected');
                selectedPlan = option.dataset.plan;
                selectedPrice = option.dataset.price;
                
                // Add success feedback
                selectBtn.innerHTML = '<i class="fas fa-check"></i> Selected!';
                selectBtn.style.background = 'linear-gradient(45deg, #2ecc71, #27ae60)';
                
                // Reset button text after 2 seconds
                setTimeout(() => {
                    selectBtn.innerHTML = selectBtn.getAttribute('data-original-text') || 'Select Plan';
                }, 2000);
                
                // Scroll to form with smooth animation
                document.querySelector('.payment-form').scrollIntoView({ 
                    behavior: 'smooth',
                    block: 'start'
                });
                
                // Add haptic feedback if available
                if (navigator.vibrate) {
                    navigator.vibrate(50);
                }
            });
            
            // Store original button text
            selectBtn.setAttribute('data-original-text', selectBtn.textContent);
        });

        // Function to show/hide loading overlay
        function toggleLoading(show) {
            const loadingOverlay = document.querySelector('.loading-overlay');
            loadingOverlay.style.display = show ? 'flex' : 'none';
        }

        // PayStack Integration
        let isProcessing = false; // Flag to prevent double submission

        function payWithPaystack() {
            if (isProcessing) {
                Swal.fire({
                    title: 'Processing Payment',
                    text: 'Payment is already being processed. Please wait...',
                    icon: 'info',
                    confirmButtonColor: '#4a90e2'
                });
                return;
            }

            if (!selectedPlan) {
                Swal.fire({
                    title: 'Select Plan',
                    text: 'Please select a subscription plan',
                    icon: 'warning',
                    confirmButtonColor: '#4a90e2'
                });
                return;
            }

            // Check if user is logged in
            const token = localStorage.getItem('token');
            if (!token) {
                Swal.fire({
                    title: 'Login Required',
                    text: 'Please log in to continue with payment',
                    icon: 'warning',
                    confirmButtonColor: '#4a90e2'
                }).then((result) => {
                    if (result.isConfirmed) {
                        window.location.href = '/login.html';
                    }
                });
                return;
            }

            isProcessing = true;
            // Show loading overlay
            toggleLoading(true);

            const paymentForm = document.getElementById('paymentForm');
            const email = document.getElementById('email-address').value;
            const fullName = document.getElementById('full-name').value;
            const phone = document.getElementById('phone-number').value;

            // First, initialize payment with backend
            fetch('https://dedoc-backend-production.up.railway.app/api/payments/initialize', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'Authorization': `Bearer ${token}`
                },
                body: JSON.stringify({
                    plan: selectedPlan,
                    email: email,
                    fullName: fullName,
                    phone: phone
                })
            })
            .then(response => {
                if (!response.ok) {
                    return response.json().then(err => {
                        throw new Error(err.message || `HTTP error! status: ${response.status}`);
                    });
                }
                return response.json();
            })
            .then(data => {
                // Hide loading overlay before opening Paystack popup
                toggleLoading(false);

                if (!data.data || !data.data.authorization_url) {
                    throw new Error(data.message || 'Payment initialization failed');
                }

                // If there's a pending payment reference, use it
                const reference = data.data.reference;
                
                // Initialize PayStack payment
                const paystack = new PaystackPop();
                paystack.newTransaction({
                    key: 'pk_live_9fbe2b457adf35c98bef3a543ff62979c36a0970',
                    email: email,
                    amount: selectedPrice * 100,
                    currency: 'NGN',
                    ref: reference,
                    callback_url: window.location.origin + '/payment-verification.html',
                    metadata: {
                        custom_fields: [
                            {
                                display_name: "Full Name",
                                variable_name: "full_name",
                                value: fullName
                            },
                            {
                                display_name: "Phone Number",
                                variable_name: "phone",
                                value: phone
                            },
                            {
                                display_name: "Selected Plan",
                                variable_name: "plan",
                                value: selectedPlan
                            }
                        ]
                    },
                    onSuccess: function(response) {
                        // Redirect to verification page
                        window.location.href = window.location.origin + '/payment-verification.html?reference=' + response.reference;
                    },
                    onClose: function() {
                        // Hide loading overlay and reset processing flag
                        toggleLoading(false);
                        isProcessing = false;
                        // Handle payment window close
                        Swal.fire({
                            title: 'Transaction Cancelled',
                            text: 'You closed the payment window. Would you like to try again?',
                            icon: 'info',
                            showCancelButton: true,
                            confirmButtonColor: '#4a90e2',
                            cancelButtonColor: '#e74c3c',
                            confirmButtonText: 'Try Again',
                            cancelButtonText: 'Cancel'
                        }).then((result) => {
                            if (result.isConfirmed) {
                                payWithPaystack();
                            }
                        });
                    }
                });
            })
            .catch(error => {
                // Hide loading overlay and reset processing flag
                toggleLoading(false);
                isProcessing = false;
                
                // Check if this is a pending payment error
                if (error.message && error.message.includes('pending payment')) {
                    try {
                        const errorData = JSON.parse(error.message);
                        if (errorData.data) {
                            const timeElapsed = errorData.data.timeElapsed || 0;
                            const secondsLeft = Math.max(0, 3 - Math.floor(timeElapsed / 1000));
                            
                            if (secondsLeft > 0) {
                                Swal.fire({
                                    title: 'Pending Payment',
                                    text: `You have a pending payment. Please wait ${secondsLeft} seconds for it to expire.`,
                                    icon: 'warning',
                                    confirmButtonColor: '#4a90e2'
                                });
                            } else {
                                // If more than 3 seconds have passed, try the payment again
                                payWithPaystack();
                                return;
                            }
                        }
                    } catch (e) {
                        console.error('Error parsing error message:', e);
                    }
                }
                
                console.error('Payment Error Details:', {
                    message: error.message,
                    token: localStorage.getItem('token') ? 'Token exists' : 'No token',
                    plan: selectedPlan,
                    error: error
                });

                Swal.fire({
                    title: 'Payment Error',
                    text: error.message || 'Could not initialize payment. Please try logging in again.',
                    icon: 'error',
                    confirmButtonColor: '#4a90e2'
                });
            });
        }

        // Function to verify payment
        function verifyPayment(reference) {
            fetch(`https://dedoc-backend-production.up.railway.app/api/payments/verify?reference=${reference}`, {
                method: 'GET',
                headers: {
                    'Authorization': `Bearer ${localStorage.getItem('token')}`,
                    'Content-Type': 'application/json'
                }
            })
            .then(response => {
                if (!response.ok) {
                    return response.json().then(err => {
                        throw new Error(err.message || `HTTP error! status: ${response.status}`);
                    });
                }
                return response.json();
            })
            .then(data => {
                toggleLoading(false);
                isProcessing = false;
                if (data.status === 'success') {
                    Swal.fire({
                        title: 'Payment Successful!',
                        text: 'Redirecting to dashboard...',
                        icon: 'success',
                        confirmButtonColor: '#4a90e2',
                        timer: 2000,
                        showConfirmButton: false
                    }).then(() => {
                        window.location.href = '/dashboard.html?payment=success';
                    });
                } else {
                    throw new Error(data.message || 'Payment verification failed');
                }
            })
            .catch(error => {
                toggleLoading(false);
                isProcessing = false;
                console.error('Verification Error:', error);
                
                Swal.fire({
                    title: 'Payment Verification Failed',
                    html: `
                        <div style="text-align: left;">
                            <p><strong>Error:</strong> ${error.message}</p>
                            <p><strong>Reference:</strong> ${reference}</p>
                            <p>Please contact support if your account was debited.</p>
                        </div>
                    `,
                    icon: 'error',
                    confirmButtonColor: '#4a90e2'
                });
            });
        }

        // Check for error parameters in URL
        window.addEventListener('load', function() {
            const urlParams = new URLSearchParams(window.location.search);
            const error = urlParams.get('error');
            if (error === 'verification_failed') {
                Swal.fire({
                    title: 'Verification Failed',
                    text: 'Payment verification failed. If your account was debited, please contact support.',
                    icon: 'error',
                    confirmButtonColor: '#4a90e2'
                });
            } else if (error === 'payment_failed') {
                Swal.fire({
                    title: 'Payment Failed',
                    text: 'Payment failed. Please try again or contact support.',
                    icon: 'error',
                    confirmButtonColor: '#4a90e2'
                });
            }
        });

        // Form submission
        document.getElementById('paymentForm').addEventListener('submit', function(e) {
            e.preventDefault();
            if (!selectedPlan) {
                Swal.fire({
                    title: 'Select Plan',
                    text: 'Please select a subscription plan',
                    icon: 'warning',
                    confirmButtonColor: '#4a90e2'
                });
                return;
            }
            payWithPaystack();
        });
    </script>
</body>
</html>