{% extends "common/base.html" %}
{% from "components/header.html" import header %}

{% block title %}Launching Instance - DocuPulse{% endblock %}

{% block content %}
{{ header(
    title="Launching Instance",
    description="Setting up your new DocuPulse instance",
    icon="fa-rocket"
) }}

<div class="container-fluid">
    <div class="row justify-content-center">
        <div class="col-md-8">
            <div class="card">
                <div class="card-body">
                    <div class="text-center mb-4">
                        <div class="spinner-border text-primary mb-3" role="status" style="width: 3rem; height: 3rem;">
                            <span class="visually-hidden">Loading...</span>
                        </div>
                        <h4 id="currentStep">Initializing...</h4>
                        <p class="text-muted" id="stepDescription">Preparing to launch your instance</p>
                    </div>

                    <div class="progress mb-4" style="height: 25px;">
                        <div class="progress-bar progress-bar-striped progress-bar-animated" 
                             role="progressbar" 
                             id="launchProgress" 
                             style="width: 0%">0%</div>
                    </div>

                    <div id="stepsContainer">
                        <!-- Your custom steps will be added here -->
                    </div>

                    <div class="text-center mt-4">
                        <div id="errorContainer" class="alert alert-danger" style="display: none;">
                            <h5><i class="fas fa-exclamation-triangle"></i> Error</h5>
                            <p id="errorMessage"></p>
                            <button class="btn btn-outline-danger" onclick="retryLaunch()">
                                <i class="fas fa-redo"></i> Retry
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<style>
.step-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    background-color: #f8f9fa;
    transition: all 0.3s ease;
}

.step-item.active {
    background-color: #e3f2fd;
}

.step-item.completed {
    background-color: #e8f5e9;
}

.step-item.failed {
    background-color: #ffebee;
}

.step-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    flex-shrink: 0;
}

.step-item.active .step-icon {
    background-color: var(--primary-color);
    color: white;
}

.step-item.completed .step-icon {
    background-color: #28a745;
    color: white;
}

.step-item.failed .step-icon {
    background-color: #dc3545;
    color: white;
}

.step-content {
    flex-grow: 1;
}

.step-content h5 {
    margin-bottom: 0.25rem;
}

.step-status {
    margin: 0;
    font-size: 0.875rem;
    color: #6c757d;
}

.step-item.completed .step-status {
    color: #28a745;
}

.step-item.failed .step-status {
    color: #dc3545;
}
</style>

{% endblock %}

{% block extra_js %}
<script>
document.addEventListener('DOMContentLoaded', function() {
    // Get the launch data from sessionStorage
    const launchData = JSON.parse(sessionStorage.getItem('instanceLaunchData'));
    if (!launchData) {
        showError('No launch data found. Please start over.');
        return;
    }

    // Initialize the steps
    initializeSteps();
    
    // Start the launch process
    startLaunch(launchData);
});

function initializeSteps() {
    const stepsContainer = document.getElementById('stepsContainer');
    
    // Add DNS check step
    const dnsStep = document.createElement('div');
    dnsStep.className = 'step-item';
    dnsStep.innerHTML = `
        <div class="step-icon"><i class="fas fa-globe"></i></div>
        <div class="step-content">
            <h5>Checking DNS Records</h5>
            <p class="step-status">Verifying domain configurations...</p>
        </div>
    `;
    stepsContainer.appendChild(dnsStep);

    // Add NGINX connection check step
    const nginxStep = document.createElement('div');
    nginxStep.className = 'step-item';
    nginxStep.innerHTML = `
        <div class="step-icon"><i class="fas fa-network-wired"></i></div>
        <div class="step-content">
            <h5>Checking NGINX Connection</h5>
            <p class="step-status">Verifying connection to NGINX Proxy Manager...</p>
        </div>
    `;
    stepsContainer.appendChild(nginxStep);

    // Add Proxy Host creation step
    const proxyStep = document.createElement('div');
    proxyStep.className = 'step-item';
    proxyStep.innerHTML = `
        <div class="step-icon"><i class="fas fa-server"></i></div>
        <div class="step-content">
            <h5>Creating Proxy Host</h5>
            <p class="step-status">Setting up NGINX proxy host configuration...</p>
        </div>
    `;
    stepsContainer.appendChild(proxyStep);

    // Add SSL Certificate generation step
    const sslStep = document.createElement('div');
    sslStep.className = 'step-item';
    sslStep.innerHTML = `
        <div class="step-icon"><i class="fas fa-lock"></i></div>
        <div class="step-content">
            <h5>Generating SSL Certificate</h5>
            <p class="step-status">Setting up secure HTTPS connection...</p>
        </div>
    `;
    stepsContainer.appendChild(sslStep);
}

async function startLaunch(data) {
    try {
        // Step 1: Check DNS records
        await updateStep(1, 'Checking DNS Records', 'Verifying domain configurations...');
        const dnsResult = await checkDNSRecords(data.webAddresses);
        
        // Check if any domains failed to resolve
        const failedDomains = Object.entries(dnsResult.results)
            .filter(([_, result]) => !result.resolved)
            .map(([domain]) => domain);
        
        if (failedDomains.length > 0) {
            throw new Error(`DNS records not found for: ${failedDomains.join(', ')}`);
        }

        // Update the step to show success
        const dnsStep = document.querySelector('.step-item');
        dnsStep.classList.remove('active');
        dnsStep.classList.add('completed');
        
        // Create a details section for DNS results
        const detailsSection = document.createElement('div');
        detailsSection.className = 'mt-3';
        detailsSection.innerHTML = `
            <div class="card">
                <div class="card-body">
                    <h6 class="card-title mb-3">DNS Check Results</h6>
                    <div class="table-responsive">
                        <table class="table table-sm">
                            <thead>
                                <tr>
                                    <th>Domain</th>
                                    <th>Status</th>
                                    <th>IP Address</th>
                                    <th>TTL</th>
                                </tr>
                            </thead>
                            <tbody>
                                ${Object.entries(dnsResult.results).map(([domain, result]) => `
                                    <tr>
                                        <td>${domain}</td>
                                        <td>
                                            <span class="badge bg-${result.resolved ? 'success' : 'danger'}">
                                                ${result.resolved ? 'Resolved' : 'Not Found'}
                                            </span>
                                        </td>
                                        <td>${result.ip || 'N/A'}</td>
                                        <td>${result.ttl || 'N/A'}</td>
                                    </tr>
                                `).join('')}
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        `;
        
        // Add the details section after the status text
        const statusText = dnsStep.querySelector('.step-status');
        statusText.textContent = 'DNS records verified successfully';
        statusText.after(detailsSection);

        // Step 2: Check NGINX connection
        await updateStep(2, 'Checking NGINX Connection', 'Verifying connection to NGINX Proxy Manager...');
        const nginxResult = await checkNginxConnection();
        
        if (!nginxResult.success) {
            throw new Error(nginxResult.error || 'Failed to connect to NGINX Proxy Manager');
        }

        // Update the step to show success
        const nginxStep = document.querySelectorAll('.step-item')[1];
        nginxStep.classList.remove('active');
        nginxStep.classList.add('completed');
        nginxStep.querySelector('.step-status').textContent = 'Successfully connected to NGINX Proxy Manager';

        // Step 3: Create Proxy Host
        await updateStep(3, 'Creating Proxy Host', 'Setting up NGINX proxy host configuration...');
        const proxyResult = await createProxyHost(data.webAddresses, data.port);
        
        if (!proxyResult.success) {
            throw new Error(proxyResult.error || 'Failed to create proxy host');
        }

        // Step 4: Generate SSL Certificate
        await updateStep(4, 'Generating SSL Certificate', 'Setting up secure HTTPS connection...');
        const sslResult = await generateSSLCertificate(data.webAddresses, proxyResult.data.id);
        
        if (!sslResult.success) {
            throw new Error(sslResult.error || 'Failed to generate SSL certificate');
        }

    } catch (error) {
        showError(error.message);
    }
}

async function checkDNSRecords(domains) {
    try {
        const response = await fetch('/api/check-dns', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRF-Token': document.querySelector('meta[name="csrf-token"]').content
            },
            body: JSON.stringify({ domains })
        });

        if (!response.ok) {
            throw new Error('Failed to check DNS records');
        }

        const result = await response.json();
        console.log('DNS check result:', result); // Add logging to debug
        return result;
    } catch (error) {
        console.error('Error checking DNS records:', error);
        throw error;
    }
}

async function checkNginxConnection() {
    try {
        // Get NGINX settings from the template
        const nginxSettings = {
            url: '{{ nginx_settings.url if nginx_settings else "" }}',
            username: '{{ nginx_settings.username if nginx_settings else "" }}',
            password: '{{ nginx_settings.password if nginx_settings else "" }}'
        };

        // Debug log the settings (without password)
        console.log('NGINX Settings:', {
            url: nginxSettings.url,
            username: nginxSettings.username,
            hasPassword: !!nginxSettings.password
        });

        // Check if any required field is missing
        if (!nginxSettings.url || !nginxSettings.username || !nginxSettings.password) {
            return {
                success: false,
                error: 'NGINX settings are not configured. Please configure NGINX settings in the admin panel.'
            };
        }

        const response = await fetch('/api/admin/test-nginx-connection', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRF-Token': document.querySelector('meta[name="csrf-token"]').content
            },
            body: JSON.stringify(nginxSettings)
        });

        if (!response.ok) {
            const error = await response.json();
            console.error('NGINX connection error:', error);
            return { 
                success: false, 
                error: error.error || 'Failed to connect to NGINX Proxy Manager' 
            };
        }

        return { success: true };
    } catch (error) {
        console.error('Error checking NGINX connection:', error);
        return { 
            success: false, 
            error: error.message || 'Error checking NGINX connection' 
        };
    }
}

function updateStatus(step, message, type = 'info', details = '') {
    const statusElement = document.getElementById(`${step}Status`);
    const detailsElement = document.getElementById(`${step}Details`);
    
    if (statusElement) {
        // Remove any existing status classes
        statusElement.classList.remove('text-info', 'text-success', 'text-danger');
        
        // Add appropriate class based on type
        switch (type) {
            case 'success':
                statusElement.classList.add('text-success');
                break;
            case 'error':
                statusElement.classList.add('text-danger');
                break;
            default:
                statusElement.classList.add('text-info');
        }
        
        statusElement.textContent = message;
    }
    
    if (detailsElement) {
        detailsElement.innerHTML = details;
    }
}

async function createProxyHost(domains, port) {
    try {
        // Get NGINX settings from the template
        const nginxSettings = {
            url: '{{ nginx_settings.url if nginx_settings else "" }}',
            username: '{{ nginx_settings.username if nginx_settings else "" }}',
            password: '{{ nginx_settings.password if nginx_settings else "" }}'
        };

        console.log('NGINX Settings:', { ...nginxSettings, password: '***' });

        // Update status to show we're getting the token
        updateStatus('proxy', 'Getting authentication token...', 'info');

        // First, get the JWT token from NGINX
        const tokenResponse = await fetch(`${nginxSettings.url}/api/tokens`, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                identity: nginxSettings.username,
                secret: nginxSettings.password
            })
        });

        console.log('Token Response Status:', tokenResponse.status);
        console.log('Token Response Headers:', Object.fromEntries(tokenResponse.headers.entries()));

        if (!tokenResponse.ok) {
            const errorText = await tokenResponse.text();
            console.error('Token Error Response:', errorText);
            try {
                const errorJson = JSON.parse(errorText);
                throw new Error(`Failed to authenticate with NGINX: ${errorJson.message || errorText}`);
            } catch (e) {
                throw new Error(`Failed to authenticate with NGINX: ${errorText}`);
            }
        }

        const tokenData = await tokenResponse.json();
        console.log('Token Data:', { ...tokenData, token: tokenData.token ? '***' : null });
        const token = tokenData.token;

        if (!token) {
            throw new Error('No token received from NGINX Proxy Manager');
        }

        // Store the token in sessionStorage for later use
        sessionStorage.setItem('nginxToken', token);

        // Check if a proxy host already exists with the same properties
        const proxyHostsResponse = await fetch(`${nginxSettings.url}/api/nginx/proxy-hosts`, {
            method: 'GET',
            headers: {
                'Authorization': `Bearer ${token}`,
                'Content-Type': 'application/json'
            }
        });
        if (!proxyHostsResponse.ok) {
            throw new Error('Failed to fetch existing proxy hosts');
        }
        const proxyHosts = await proxyHostsResponse.json();
        const existingProxy = proxyHosts.find(ph => {
            const sameDomains = Array.isArray(ph.domain_names) &&
                ph.domain_names.length === domains.length &&
                domains.every(d => ph.domain_names.includes(d));
            return (
                sameDomains &&
                ph.forward_scheme === 'http' &&
                ph.forward_host === '192.168.68.124' &&
                parseInt(ph.forward_port) === parseInt(port)
            );
        });

        let result;
        if (existingProxy) {
            console.log('Found existing proxy host:', existingProxy);
            result = existingProxy;
        } else {
            // Update status to show we're creating the proxy host
            updateStatus('proxy', 'Creating proxy host configuration...', 'info');

            const proxyHostData = {
                domain_names: domains,
                forward_scheme: 'http',
                forward_host: '192.168.68.124',
                forward_port: parseInt(port),
                ssl_forced: true,
                caching_enabled: true,
                block_exploits: true,
                allow_websocket_upgrade: true,
                http2_support: true,
                hsts_enabled: true,
                hsts_subdomains: true,
                meta: {
                    letsencrypt_agree: true,
                    dns_challenge: false
                }
            };

            console.log('Creating proxy host with data:', proxyHostData);

            // Create the proxy host with NGINX
            const response = await fetch(`${nginxSettings.url}/api/nginx/proxy-hosts`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'Authorization': `Bearer ${token}`
                },
                body: JSON.stringify(proxyHostData)
            });

            console.log('Proxy Host Response Status:', response.status);
            console.log('Proxy Host Response Headers:', Object.fromEntries(response.headers.entries()));

            if (!response.ok) {
                const errorText = await response.text();
                console.error('Proxy Host Error Response:', errorText);
                try {
                    const errorJson = JSON.parse(errorText);
                    const errorMessage = errorJson.error?.message || errorText;
                    // Check if the error is about a domain already being in use
                    if (errorMessage.includes('is already in use')) {
                        const domain = errorMessage.split(' ')[0];
                        throw new Error(`Domain ${domain} is already configured in NGINX Proxy Manager. Please remove it from NGINX Proxy Manager and try again.`);
                    }
                    throw new Error(`Failed to create proxy host: ${errorMessage}`);
                } catch (e) {
                    if (e.message.includes('is already configured in NGINX Proxy Manager')) {
                        throw e; // Re-throw the domain in use error
                    }
                    throw new Error(`Failed to create proxy host: ${errorText}`);
                }
            }

            result = await response.json();
            console.log('Proxy Host Creation Result:', result);
        }

        // Create a detailed success message with NGINX Proxy results
        const successDetails = `
            <div class="mt-3">
                <div class="card">
                    <div class="card-body">
                        <h6 class="card-title mb-3">NGINX Proxy Results</h6>
                        <div class="table-responsive">
                            <table class="table table-sm">
                                <thead>
                                    <tr>
                                        <th>Property</th>
                                        <th>Value</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    <tr>
                                        <td>Proxy Host ID</td>
                                        <td>${result.id || 'N/A'}</td>
                                    </tr>
                                    <tr>
                                        <td>Domains</td>
                                        <td>${domains.join(', ')}</td>
                                    </tr>
                                    <tr>
                                        <td>Forward Scheme</td>
                                        <td>http</td>
                                    </tr>
                                    <tr>
                                        <td>Forward Host</td>
                                        <td>192.168.68.124</td>
                                    </tr>
                                    <tr>
                                        <td>Forward Port</td>
                                        <td>${parseInt(port)}</td>
                                    </tr>
                                    <tr>
                                        <td>SSL Status</td>
                                        <td>
                                            <span class="badge bg-success">Forced</span>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>Security Features</td>
                                        <td>
                                            <span class="badge bg-success me-1">Block Exploits</span>
                                            <span class="badge bg-success me-1">HSTS</span>
                                            <span class="badge bg-success">HTTP/2</span>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td>Performance</td>
                                        <td>
                                            <span class="badge bg-success me-1">Caching</span>
                                            <span class="badge bg-success">WebSocket</span>
                                        </td>
                                    </tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
            </div>
        `;

        // Update the proxy step to show success and add the results
        const proxyStep = document.querySelectorAll('.step-item')[2];
        proxyStep.classList.remove('active');
        proxyStep.classList.add('completed');
        const statusText = proxyStep.querySelector('.step-status');
        statusText.textContent = existingProxy ? 'Using existing proxy host' : 'Successfully created proxy host';
        statusText.after(document.createRange().createContextualFragment(successDetails));

        return {
            success: true,
            data: result
        };
    } catch (error) {
        console.error('Error creating proxy host:', error);
        // Update status with error message
        updateStatus('proxy', `Failed: ${error.message}`, 'error');
        return {
            success: false,
            error: error.message
        };
    }
}

async function generateSSLCertificate(domains, proxyHostId) {
    try {
        // Get NGINX settings from the template
        const nginxSettings = {
            url: '{{ nginx_settings.url if nginx_settings else "" }}',
            username: '{{ nginx_settings.username if nginx_settings else "" }}',
            password: '{{ nginx_settings.password if nginx_settings else "" }}'
        };

        // Get a fresh token from NGINX
        const tokenResponse = await fetch(`${nginxSettings.url}/api/tokens`, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                identity: nginxSettings.username,
                secret: nginxSettings.password
            })
        });

        if (!tokenResponse.ok) {
            const errorText = await tokenResponse.text();
            console.error('Token Error Response:', errorText);
            throw new Error(`Failed to authenticate with NGINX: ${errorText}`);
        }

        const tokenData = await tokenResponse.json();
        const token = tokenData.token;

        if (!token) {
            throw new Error('No token received from NGINX Proxy Manager');
        }

        // First, check if a certificate already exists for these domains
        const checkResponse = await fetch(`${nginxSettings.url}/api/nginx/certificates`, {
            method: 'GET',
            headers: {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${token}`
            }
        });

        if (!checkResponse.ok) {
            throw new Error('Failed to check existing certificates');
        }

        const existingCertificates = await checkResponse.json();
        const existingCertificate = existingCertificates.find(cert => {
            const certDomains = cert.domain_names || [];
            return domains.every(domain => certDomains.includes(domain)) &&
                   certDomains.length === domains.length;
        });

        let result;
        let usedExisting = false;
        if (existingCertificate) {
            console.log('Found existing certificate:', existingCertificate);
            result = existingCertificate;
            usedExisting = true;
        } else {
            // Create the SSL certificate directly with NGINX
            const requestBody = {
                domain_names: domains,
                meta: {
                    letsencrypt_email: '{{ nginx_settings.email if nginx_settings else "" }}',
                    letsencrypt_agree: true,
                    dns_challenge: false
                },
                provider: 'letsencrypt'
            };
            console.log('Request Body:', requestBody);

            const response = await fetch(`${nginxSettings.url}/api/nginx/certificates`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'Authorization': `Bearer ${token}`
                },
                body: JSON.stringify(requestBody)
            });

            console.log('Response Status:', response.status);
            console.log('Response Headers:', Object.fromEntries(response.headers.entries()));

            if (!response.ok) {
                const errorText = await response.text();
                console.error('Certificate creation error:', errorText);
                throw new Error(`Failed to generate SSL certificate: ${errorText}`);
            }

            result = await response.json();
            console.log('Certificate creation result:', result);
        }

        // Update the SSL step to show success
        const sslStep = document.querySelectorAll('.step-item')[3];
        sslStep.classList.remove('active');
        sslStep.classList.add('completed');
        const sslStatusText = sslStep.querySelector('.step-status');
        sslStatusText.textContent = usedExisting ? 
            'Using existing SSL certificate' : 
            'SSL certificate generated successfully';

        // Always add SSL certificate details
        const sslDetails = document.createElement('div');
        sslDetails.className = 'mt-3';
        sslDetails.innerHTML = `
            <div class="card">
                <div class="card-body">
                    <h6 class="card-title mb-3">SSL Certificate Details</h6>
                    <div class="table-responsive">
                        <table class="table table-sm">
                            <thead>
                                <tr>
                                    <th>Property</th>
                                    <th>Value</th>
                                </tr>
                            </thead>
                            <tbody>
                                <tr>
                                    <td>Certificate ID</td>
                                    <td>${result.id || 'N/A'}</td>
                                </tr>
                                <tr>
                                    <td>Domains</td>
                                    <td>${(result.domain_names || domains).join(', ')}</td>
                                </tr>
                                <tr>
                                    <td>Provider</td>
                                    <td>${result.provider || 'Let\'s Encrypt'}</td>
                                </tr>
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        `;
        sslStatusText.after(sslDetails);

        return {
            success: true,
            data: {
                certificate: result
            }
        };
    } catch (error) {
        console.error('Error generating SSL certificate:', error);
        return {
            success: false,
            error: error.message
        };
    }
}

function updateStep(stepNumber, title, description) {
    return new Promise((resolve) => {
        // Update the current step in the header
        document.getElementById('currentStep').textContent = title;
        document.getElementById('stepDescription').textContent = description;

        // Update progress bar
        const progress = (stepNumber - 1) * 20;
        const progressBar = document.getElementById('launchProgress');
        progressBar.style.width = `${progress}%`;
        progressBar.textContent = `${progress}%`;

        // Update step items
        const steps = document.querySelectorAll('.step-item');
        steps.forEach((item, index) => {
            const step = index + 1;
            item.classList.remove('active', 'completed', 'failed');
            
            if (step < stepNumber) {
                item.classList.add('completed');
                item.querySelector('.step-status').textContent = 'Completed';
            } else if (step === stepNumber) {
                item.classList.add('active');
                item.querySelector('.step-status').textContent = description;
            }
        });

        // Simulate some work being done
        setTimeout(resolve, 1000);
    });
}

function showError(message) {
    const errorContainer = document.getElementById('errorContainer');
    const errorMessage = document.getElementById('errorMessage');
    
    errorMessage.textContent = message;
    errorContainer.style.display = 'block';
    
    // Update the current step to show error
    const currentStep = document.querySelector('.step-item.active');
    if (currentStep) {
        currentStep.classList.add('failed');
        currentStep.querySelector('.step-status').textContent = 'Failed: ' + message;
    }
}

function retryLaunch() {
    // Reload the page to start over
    window.location.reload();
}
</script>
{% endblock %}