{% extends "base.html" %}
{% block content %}
<div class="min-h-screen bg-dark py-8 px-4">
    <div class="max-w-xl mx-auto bg-dark-lighter rounded-lg shadow-lg p-6">
        <h1 class="text-2xl font-bold mb-6 text-center">Subscribe to VPN Service</h1>
        <form id="subscription-form" class="space-y-6">
            <div>
                <label class="block text-sm font-medium mb-2">User ID</label>
                <input type="text" id="user-id" readonly
                    class="w-full px-3 py-2 bg-dark border border-gray-600 rounded-md text-white focus:outline-none focus:border-blue-500 font-mono text-sm">
                <p class="mt-1 text-sm text-gray-400">Only used for subscription management. Save this to be able to login.</p>
            </div>

            <div>
                <label class="block text-sm font-medium mb-2">Duration & Price</label>
                <div class="space-y-4">
                    <!-- Preset buttons -->
                    <div class="flex justify-between text-sm text-gray-400">
                        <button type="button" data-hours="1" class="duration-preset hover:text-blue-400">1 Hour</button>
                        <button type="button" data-hours="24" class="duration-preset hover:text-blue-400">1 Day</button>
                        <button type="button" data-hours="168" class="duration-preset hover:text-blue-400">1
                            Week</button>
                        <button type="button" data-hours="720" class="duration-preset hover:text-blue-400">1
                            Month</button>
                        <button type="button" data-hours="2160" class="duration-preset hover:text-blue-400">3
                            Months</button>
                    </div>
                    <!-- Direct input fields -->
                    <div class="grid grid-cols-2 gap-4">
                        <div class="space-y-1">
                            <label class="text-xs text-gray-400">Custom Duration</label>
                            <div class="flex items-center space-x-2">
                                <input type="number" id="custom-hours" min="1" max="2160" placeholder="Hours"
                                    class="w-full px-3 py-2 bg-dark border border-gray-600 rounded-md text-white focus:outline-none focus:border-blue-500 text-sm">
                            </div>
                        </div>
                        <div class="space-y-1">
                            <label class="text-xs text-gray-400">Custom Amount</label>
                            <div class="flex items-center space-x-2">
                                <input type="number" id="custom-sats" min="100" max="216000" placeholder="Min 100 sats"
                                    class="w-full px-3 py-2 bg-dark border border-gray-600 rounded-md text-white focus:outline-none focus:border-blue-500 text-sm">
                            </div>
                        </div>
                    </div>
                </div>
                <div class="text-center mt-4">
                    <div class="text-lg text-gray-400 mb-2">
                        <span id="duration-display">24 hours</span>
                    </div>
                    <span id="price-display" class="text-2xl font-bold text-blue-400">-</span>
                    <span class="text-2xl font-bold text-blue-400"> sats</span>
                </div>
            </div>

            <div id="keys-section" class="space-y-4">
                <button type="button" id="show-keys"
                    class="w-full px-3 py-2 bg-dark border border-gray-600 rounded-md text-white hover:bg-gray-800 transition-colors">
                    Show my keys
                </button>

                <div id="keys-display" class="hidden space-y-3">
                    <div class="bg-yellow-900 bg-opacity-20 p-4 rounded-md text-yellow-500 text-sm">
                        Your private keys are only generated within the browser! We do NOT save your keys.
                        Save these keys now. They will not be shown on the next page. 
                    </div>

                    <div class="space-y-2">
                        <div class="flex items-center space-x-2">
                            <label class="text-sm font-medium w-24">Private Key:</label>
                            <input type="text" id="private-key" readonly
                                class="flex-1 px-2 py-1 bg-dark border border-gray-600 rounded text-sm font-mono">
                            <button type="button" onclick="copyToClipboard('private-key')"
                                class="p-1 hover:text-blue-400">
                                <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 20 20"
                                    fill="currentColor">
                                    <path d="M8 3a1 1 0 011-1h2a1 1 0 110 2H9a1 1 0 01-1-1z" />
                                    <path
                                        d="M6 3a2 2 0 00-2 2v11a2 2 0 002 2h8a2 2 0 002-2V5a2 2 0 00-2-2 3 3 0 01-3 3H9a3 3 0 01-3-3z" />
                                </svg>
                            </button>
                        </div>

                        <div class="flex items-center space-x-2">
                            <label class="text-sm font-medium w-24">Public Key:</label>
                            <input type="text" id="public-key" readonly
                                class="flex-1 px-2 py-1 bg-dark border border-gray-600 rounded text-sm font-mono">
                            <button type="button" onclick="copyToClipboard('public-key')"
                                class="p-1 hover:text-blue-400">
                                <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 20 20"
                                    fill="currentColor">
                                    <path d="M8 3a1 1 0 011-1h2a1 1 0 110 2H9a1 1 0 01-1-1z" />
                                    <path
                                        d="M6 3a2 2 0 00-2 2v11a2 2 0 002 2h8a2 2 0 002-2V5a2 2 0 00-2-2 3 3 0 01-3 3H9a3 3 0 01-3-3z" />
                                </svg>
                            </button>
                        </div>

                        <div class="flex items-center space-x-2">
                            <label class="text-sm font-medium w-24">Preshared Key:</label>
                            <input type="text" id="preshared-key" readonly
                                class="flex-1 px-2 py-1 bg-dark border border-gray-600 rounded text-sm font-mono">
                            <button type="button" onclick="copyToClipboard('preshared-key')"
                                class="p-1 hover:text-blue-400">
                                <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 20 20"
                                    fill="currentColor">
                                    <path d="M8 3a1 1 0 011-1h2a1 1 0 110 2H9a1 1 0 01-1-1z" />
                                    <path
                                        d="M6 3a2 2 0 00-2 2v11a2 2 0 002 2h8a2 2 0 002-2V5a2 2 0 00-2-2 3 3 0 01-3 3H9a3 3 0 01-3-3z" />
                                </svg>
                            </button>
                        </div>
                    </div>
                </div>
            </div>

            <button type="submit"
                class="w-full bg-blue-600 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded transition-colors">
                Pay with Bitcoin
            </button>
        </form>
        <div class="mt-4 text-center">
            <p class="text-gray-400">Already have a subscription?</p>
            <a href="{{ url_for('user.login') }}" 
               class="text-blue-400 hover:text-blue-300">
                Login to Dashboard
            </a>
        </div>
    </div>
</div>

<script>
    function copyToClipboard(elementId) {
        const element = document.getElementById(elementId);
        element.select();
        document.execCommand('copy');

        // Visual feedback
        const button = element.nextElementSibling;
        button.classList.add('text-green-400');
        setTimeout(() => button.classList.remove('text-green-400'), 1000);
    }
</script>

<script type="module">
    import { WireGuard } from '/static/js/utils/wireguard.js';
    import { Pricing } from '/static/js/pricing.js';

    document.addEventListener('DOMContentLoaded', async function () {
        // Initialize user ID
        const userId = Date.now().toString();
        document.getElementById('user-id').value = userId;

        // Initialize pricing
        Pricing.init();

        document.querySelectorAll('.duration-preset').forEach(button => {
            button.addEventListener('click', function () {
                const hours = this.dataset.hours;
                console.log('Preset clicked:', hours);
                const customHours = document.getElementById('custom-hours');
                if (customHours) {
                    customHours.value = hours;
                    console.log('Custom hours updated to:', customHours.value);
                }
            });
        });

        const customHoursInput = document.getElementById('custom-hours');
        if (customHoursInput) {
            customHoursInput.addEventListener('input', function () {
                console.log('Custom hours changed to:', this.value);
            });
        }

        // Handle show keys button
        let keys = null;
        const showKeysButton = document.getElementById('show-keys');
        const keysDisplay = document.getElementById('keys-display');

        showKeysButton.addEventListener('click', async function () {
            try {
                showKeysButton.disabled = true;
                showKeysButton.textContent = 'Generating...';

                // Remove the if (!keys) check to allow regeneration
                keys = await WireGuard.generateKeys();

                document.getElementById('private-key').value = keys.privateKey;
                document.getElementById('public-key').value = keys.publicKey;
                document.getElementById('preshared-key').value = keys.presharedKey;

                keysDisplay.classList.remove('hidden');
                showKeysButton.textContent = 'Regenerate Keys';
            } catch (error) {
                console.error('Failed to generate/show keys:', error);
                alert('Failed to generate keys. Please try again.');
            } finally {
                showKeysButton.disabled = false;
            }
        });

        // Handle form submission
        document.getElementById('subscription-form').addEventListener('submit', async function (e) {
            e.preventDefault();
            console.log("Form submission started");

            const publicKey = document.getElementById('public-key').value;
            const presharedKey = document.getElementById('preshared-key').value;
            const userId = document.getElementById('user-id').value;

            console.log("Keys collected:", {
                publicKey: publicKey,
                userId: userId,
                hasPreSharedKey: !!presharedKey
            });

            if (!publicKey || !presharedKey) {
                alert('Please generate your keys first');
                return;
            }

            // Get duration from custom hours input
            const customHours = document.getElementById('custom-hours');
            const duration = customHours && customHours.value ? parseInt(customHours.value) : 24;

            console.log("Duration:", duration);

            // Create the request payload
            const payload = {
                duration: duration,
                user_id: userId,
                public_key: publicKey
            };

            console.log("Payload prepared:", payload);

            try {
                console.log("Attempting to send request to /create-invoice");
                const response = await fetch('/create-invoice', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json',
                    },
                    body: JSON.stringify(payload)
                });

                console.log("Response received:", {
                    status: response.status,
                    statusText: response.statusText
                });

                const data = await response.json();
                console.log("Response data:", data);

                if (!response.ok) {
                    console.log('Server error response:', data);
                    throw new Error(data.error || 'Failed to create invoice');
                }

                if (data.checkout_url) {
                    console.log("Redirecting to:", data.checkout_url);
                    window.location.href = data.checkout_url;
                } else {
                    throw new Error('No checkout URL received');
                }
            } catch (error) {
                console.error('Failed to create invoice:', error);
                alert('Failed to create payment: ' + error.message);
            }
        });
    });
</script>
{% endblock %}