{% macro smtp_settings_tab(smtp_settings, csrf_token) %}
<div class="row">
    <div class="col-12">
        <div class="card shadow-sm">
            <div class="card-body">
                <form id="smtpSettingsForm" method="POST" action="{{ url_for('main.update_smtp_settings') }}">
                    <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
                    
                    <div class="row">
                        <!-- SMTP Server Settings -->
                        <div class="col-md-6 mb-4">
                            <h6 class="mb-3">SMTP Server Settings</h6>
                            <div class="mb-3">
                                <label for="smtp_host" class="form-label">
                                    SMTP Host
                                    <i class="fas fa-info-circle ms-1" 
                                       style="color: var(--secondary-color); cursor: pointer;"
                                       data-bs-toggle="popover" 
                                       data-bs-html="true"
                                       data-bs-title="SMTP Host Information"
                                       data-bs-content="
                                           <strong>Common SMTP Hosts:</strong><br>
                                           • Gmail: smtp.gmail.com<br>
                                           • Office 365: smtp.office365.com<br>
                                           • Outlook: smtp-mail.outlook.com<br>
                                           • Yahoo: smtp.mail.yahoo.com<br>
                                           • Zoho: smtp.zoho.com<br>
                                           • SendGrid: smtp.sendgrid.net<br>
                                           • Amazon SES: email-smtp.[region].amazonaws.com<br>
                                           • Custom Domain: mail.yourdomain.com or smtp.yourdomain.com<br><br>
                                           <strong>Host Configuration Tips:</strong><br>
                                           • Always use the official SMTP server of your email provider<br>
                                           • For custom domains, check with your hosting provider<br>
                                           • Some providers may require specific subdomains<br>
                                           • Ensure the host is accessible from your server's network"
                                       style="cursor: pointer;"></i>
                                </label>
                                <input type="text" class="form-control" id="smtp_host" name="smtp_host" 
                                       value="{{ smtp_settings.smtp_host if smtp_settings else '' }}" required>
                            </div>
                            <div class="mb-3">
                                <label for="smtp_port" class="form-label">
                                    SMTP Port
                                    <i class="fas fa-info-circle ms-1" 
                                       style="color: var(--secondary-color); cursor: pointer;"
                                       data-bs-toggle="popover" 
                                       data-bs-html="true"
                                       data-bs-title="SMTP Port Information"
                                       data-bs-content="
                                           <strong>Common SMTP Ports:</strong><br>
                                           <strong>Port 587 (Recommended):</strong><br>
                                           • Default for TLS encryption<br>
                                           • Most widely supported<br>
                                           • Best for modern email systems<br><br>
                                           <strong>Port 465:</strong><br>
                                           • Used for SSL encryption<br>
                                           • Older but still secure<br>
                                           • Some providers prefer this port<br><br>
                                           <strong>Port 25:</strong><br>
                                           • Traditional SMTP port<br>
                                           • Often blocked by ISPs<br>
                                           • Not recommended for modern use<br><br>
                                           <strong>Port 2525:</strong><br>
                                           • Alternative to port 587<br>
                                           • Used when port 587 is blocked<br>
                                           • Common in cloud environments<br><br>
                                           <strong>Port Selection Guidelines:</strong><br>
                                           • Always use encrypted ports (587 or 465) in production<br>
                                           • Check your email provider's documentation<br>
                                           • Some networks may block certain ports<br>
                                           • Port 25 is often blocked by ISPs"
                                       style="cursor: pointer;"></i>
                                </label>
                                <input type="number" class="form-control" id="smtp_port" name="smtp_port" 
                                       value="{{ smtp_settings.smtp_port if smtp_settings else '587' }}" required>
                            </div>
                            <div class="mb-3">
                                <label for="smtp_security" class="form-label">
                                    Security
                                    <i class="fas fa-info-circle ms-1" 
                                       style="color: var(--secondary-color); cursor: pointer;"
                                       data-bs-toggle="popover" 
                                       data-bs-html="true"
                                       data-bs-title="Security Best Practices"
                                       data-bs-content="
                                           <strong>Security Options:</strong><br>
                                           <strong>TLS (Recommended):</strong><br>
                                           • Uses port 587<br>
                                           • Encrypts connection after establishing it<br>
                                           • Most widely supported<br><br>
                                           <strong>SSL:</strong><br>
                                           • Uses port 465<br>
                                           • Encrypts connection from the start<br>
                                           • Older but still secure<br><br>
                                           <strong>None:</strong><br>
                                           • Not recommended for production use<br>
                                           • May be blocked by many providers<br>
                                           • Only use for testing"
                                       style="cursor: pointer;"></i>
                                </label>
                                <select class="form-select" id="smtp_security" name="smtp_security">
                                    <option value="tls" {% if smtp_settings and smtp_settings.smtp_security == 'tls' %}selected{% endif %}>TLS</option>
                                    <option value="ssl" {% if smtp_settings and smtp_settings.smtp_security == 'ssl' %}selected{% endif %}>SSL</option>
                                    <option value="none" {% if smtp_settings and smtp_settings.smtp_security == 'none' %}selected{% endif %}>None</option>
                                </select>
                            </div>
                        </div>

                        <!-- Authentication Settings -->
                        <div class="col-md-6 mb-4">
                            <h6 class="mb-3">Authentication</h6>
                            <div class="mb-3">
                                <label for="smtp_username" class="form-label">
                                    Username
                                    <i class="fas fa-info-circle ms-1" 
                                       style="color: var(--secondary-color); cursor: pointer;"
                                       data-bs-toggle="popover" 
                                       data-bs-html="true"
                                       data-bs-title="Username Guidelines"
                                       data-bs-content="
                                           <strong>Username Requirements:</strong><br>
                                           • For Gmail: Use your full email address<br>
                                           • For Office 365: Usually your email address<br>
                                           • For custom domains: Check with your email provider<br>
                                           • If using 2FA, you may need to generate an App Password<br><br>
                                           <strong>Best Practices:</strong><br>
                                           • Always use the email address associated with your SMTP account<br>
                                           • For shared accounts, use a dedicated service account<br>
                                           • Keep track of which username is used for which purpose"
                                       style="cursor: pointer;"></i>
                                </label>
                                <input type="text" class="form-control" id="smtp_username" name="smtp_username" 
                                       value="{{ smtp_settings.smtp_username if smtp_settings else '' }}" required>
                            </div>
                            <div class="mb-3">
                                <label for="smtp_password" class="form-label">
                                    Password
                                    <i class="fas fa-info-circle ms-1" 
                                       style="color: var(--secondary-color); cursor: pointer;"
                                       data-bs-toggle="popover" 
                                       data-bs-html="true"
                                       data-bs-title="Password Security"
                                       data-bs-content="
                                           <strong>Password Requirements:</strong><br>
                                           • For Gmail with 2FA: Use an App Password<br>
                                           • For Office 365: May require an App Password if 2FA is enabled<br>
                                           • Never use your main account password for SMTP<br>
                                           • Regularly rotate your SMTP passwords<br><br>
                                           <strong>Security Best Practices:</strong><br>
                                           • Use strong, unique passwords<br>
                                           • Store passwords securely<br>
                                           • Monitor for unauthorized access<br>
                                           • Set up alerts for failed login attempts"
                                       style="cursor: pointer;"></i>
                                </label>
                                <input type="password" class="form-control" id="smtp_password" name="smtp_password" 
                                       value="{{ smtp_settings.smtp_password if smtp_settings else '' }}" required>
                            </div>
                        </div>

                        <!-- Sender Settings -->
                        <div class="col-md-6 mb-4">
                            <h6 class="mb-3">Sender Information</h6>
                            <div class="mb-3">
                                <label for="smtp_from_email" class="form-label">
                                    From Email
                                    <i class="fas fa-info-circle ms-1" 
                                       style="color: var(--secondary-color); cursor: pointer;"
                                       data-bs-toggle="popover" 
                                       data-bs-html="true"
                                       data-bs-title="From Email Guidelines"
                                       data-bs-content="
                                           <strong>Email Requirements:</strong><br>
                                           • Must match the domain of your SMTP server<br>
                                           • Should be a valid, monitored email address<br>
                                           • Use a dedicated sending address (e.g., no-reply@yourdomain.com)<br>
                                           • Ensure the domain has proper SPF, DKIM, and DMARC records<br><br>
                                           <strong>Best Practices:</strong><br>
                                           • Use a consistent sending address<br>
                                           • Set up proper email forwarding<br>
                                           • Monitor bounce rates and spam reports<br>
                                           • Keep the address active and monitored"
                                       style="cursor: pointer;"></i>
                                </label>
                                <input type="email" class="form-control" id="smtp_from_email" name="smtp_from_email" 
                                       value="{{ smtp_settings.smtp_from_email if smtp_settings else '' }}" required>
                            </div>
                            <div class="mb-3">
                                <label for="smtp_from_name" class="form-label">
                                    From Name
                                    <i class="fas fa-info-circle ms-1" 
                                       style="color: var(--secondary-color); cursor: pointer;"
                                       data-bs-toggle="popover" 
                                       data-bs-html="true"
                                       data-bs-title="From Name Best Practices"
                                       data-bs-content="
                                           <strong>Name Guidelines:</strong><br>
                                           • Use your company or application name<br>
                                           • Keep it consistent across all emails<br>
                                           • Include department name if relevant (e.g., 'DocuPulse Support')<br>
                                           • Avoid using personal names unless sending personal communications<br>
                                           • Keep it under 50 characters for best display<br><br>
                                           <strong>Best Practices:</strong><br>
                                           • Make it recognizable to recipients<br>
                                           • Avoid special characters<br>
                                           • Consider mobile display length<br>
                                           • Test how it appears in different email clients"
                                       style="cursor: pointer;"></i>
                                </label>
                                <input type="text" class="form-control" id="smtp_from_name" name="smtp_from_name" 
                                       value="{{ smtp_settings.smtp_from_name if smtp_settings else '' }}" required>
                            </div>
                        </div>

                        <!-- Email Deliverability Best Practices -->
                        <div class="col-12 mb-4">
                            <div class="alert alert-info">
                                <h6 class="alert-heading mb-2">
                                    <i class="fas fa-info-circle me-2"></i>Email Deliverability Best Practices
                                </h6>
                                <p class="mb-2">To prevent your emails from being marked as spam, ensure you have:</p>
                                <ul class="mb-0">
                                    <li><strong>SPF Record:</strong> Add a TXT record to your domain's DNS settings:
                                        <code>v=spf1 include:_spf.your-email-provider.com ~all</code>
                                    </li>
                                    <li><strong>DKIM:</strong> Add the DKIM record provided by your email provider to your domain's DNS settings</li>
                                    <li><strong>DMARC:</strong> Add a TXT record named "_dmarc" with:
                                        <code>v=DMARC1; p=none; rua=mailto:dmarc-reports@yourdomain.com</code>
                                    </li>
                                    <li><strong>Reverse DNS (PTR):</strong> Ensure your sending IP has a valid reverse DNS record</li>
                                    <li><strong>Domain Age:</strong> Use a domain that's at least 30 days old</li>
                                    <li><strong>Email Volume:</strong> Start with a small volume and gradually increase</li>
                                </ul>
                            </div>
                        </div>
                    </div>

                    <!-- Test Connection Button -->
                    <div class="mb-4">
                        <button type="button" class="btn btn-outline-primary" onclick="testSmtpConnection()">
                            <i class="fas fa-plug me-2"></i>Test Connection
                        </button>
                        <div id="testConnectionResult" class="mt-2"></div>
                    </div>

                    <!-- Save Button -->
                    <div class="d-flex justify-content-end">
                        <button type="submit" class="btn btn-primary">
                            <i class="fas fa-save me-2"></i>Save Settings
                        </button>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>

<script>
// Initialize all popovers
document.addEventListener('DOMContentLoaded', function() {
    var popoverTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="popover"]'));
    var popoverList = popoverTriggerList.map(function(popoverTriggerEl) {
        return new bootstrap.Popover(popoverTriggerEl, {
            html: true,
            trigger: 'hover',
            placement: 'right'
        });
    });
});

function testSmtpConnection() {
    const form = document.getElementById('smtpSettingsForm');
    const resultDiv = document.getElementById('testConnectionResult');
    const button = event.target;
    const originalText = button.innerHTML;
    
    // Disable button and show loading state
    button.disabled = true;
    button.innerHTML = '<i class="fas fa-spinner fa-spin me-2"></i>Testing...';
    
    // Get form data
    const formData = new FormData(form);
    
    // Send test request
    fetch('/settings/test-smtp', {
        method: 'POST',
        headers: {
            'X-CSRF-Token': '{{ csrf_token }}',
            'Content-Type': 'application/json',
        },
        body: JSON.stringify(Object.fromEntries(formData))
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            resultDiv.innerHTML = '<div class="alert alert-success"><i class="fas fa-check-circle me-2"></i>Connection successful!</div>';
        } else {
            resultDiv.innerHTML = `<div class="alert alert-danger"><i class="fas fa-times-circle me-2"></i>Connection failed: ${data.error}</div>`;
        }
    })
    .catch(error => {
        resultDiv.innerHTML = `<div class="alert alert-danger"><i class="fas fa-times-circle me-2"></i>Error: ${error.message}</div>`;
    })
    .finally(() => {
        // Restore button state
        button.disabled = false;
        button.innerHTML = originalText;
    });
}
</script>
{% endmacro %}