{% extends "base.html" %}

{% block content %}
<div class="flex flex-col md:flex-row justify-between items-start md:items-center mb-6">
    <div>
        <h1 class="text-2xl font-bold">{{ _('Email Configuration & Testing') }}</h1>
        <p class="text-text-muted-light dark:text-text-muted-dark">{{ _('Configure and test email delivery') }}</p>
    </div>
    <div class="mt-4 md:mt-0">
        <a href="{{ url_for('admin.admin_dashboard') }}" class="btn btn-secondary">
            <i class="fas fa-arrow-left mr-2"></i>{{ _('Back to Admin') }}
        </a>
    </div>
</div>

<!-- Database Configuration Form -->
<div class="bg-card-light dark:bg-card-dark p-6 rounded-xl border border-border-light dark:border-border-dark shadow-sm mb-6">
    <h2 class="text-lg font-semibold mb-4">{{ _('Email Configuration') }}</h2>
    
    <div class="mb-4 p-4 bg-blue-50 dark:bg-blue-900/20 border border-blue-300 dark:border-blue-700 rounded-lg">
        <p class="text-sm">
            <i class="fas fa-info-circle mr-2"></i>
            {{ _('Configure email settings here to save them in the database.') }}
        </p>
    </div>
    
    <form id="emailConfigForm" class="space-y-4">
        <!-- Enable Email -->
        <div class="flex items-center">
            <input type="checkbox" id="mailEnabled" class="h-4 w-4 rounded border-gray-300 text-indigo-600 shadow-sm focus:border-indigo-500 focus:ring-indigo-500">
            <label for="mailEnabled" class="ml-2 block text-sm font-semibold text-gray-900 dark:text-gray-300">{{ _('Enable Database Email Configuration') }}</label>
        </div>
        
        <div id="emailConfigFields" class="space-y-4 pl-6">
            <!-- Mail Server -->
            <div>
                <label for="mailServer" class="form-label">{{ _('Mail Server') }} *</label>
                <input type="text" id="mailServer" class="form-input" placeholder="smtp.gmail.com" required>
            </div>
            
            <!-- Mail Port -->
            <div>
                <label for="mailPort" class="form-label">{{ _('Mail Port') }} *</label>
                <input type="number" id="mailPort" class="form-input" value="587" required>
            </div>
            
            <!-- TLS/SSL -->
            <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
                <div class="flex items-center">
                    <input type="checkbox" id="mailUseTls" class="h-4 w-4 rounded border-gray-300 text-indigo-600 shadow-sm focus:border-indigo-500 focus:ring-indigo-500" checked>
                    <label for="mailUseTls" class="ml-2 block text-sm text-gray-900 dark:text-gray-300">{{ _('Use TLS') }}</label>
                </div>
                <div class="flex items-center">
                    <input type="checkbox" id="mailUseSsl" class="h-4 w-4 rounded border-gray-300 text-indigo-600 shadow-sm focus:border-indigo-500 focus:ring-indigo-500">
                    <label for="mailUseSsl" class="ml-2 block text-sm text-gray-900 dark:text-gray-300">{{ _('Use SSL') }}</label>
                </div>
            </div>
            
            <!-- Username -->
            <div>
                <label for="mailUsername" class="form-label">{{ _('Username') }}</label>
                <input type="text" id="mailUsername" class="form-input" placeholder="your-email@gmail.com">
            </div>
            
            <!-- Password -->
            <div>
                <label for="mailPassword" class="form-label">
                    {{ _('Password') }}
                    <span id="passwordStatus" class="text-sm text-gray-500"></span>
                </label>
                <input type="password" id="mailPassword" class="form-input" placeholder="{{ _('Leave empty to keep current') }}">
            </div>
            
            <!-- Default Sender -->
            <div>
                <label for="mailDefaultSender" class="form-label">{{ _('Default Sender') }} *</label>
                <input type="email" id="mailDefaultSender" class="form-input" placeholder="noreply@yourdomain.com" required>
            </div>
            
            <!-- Test recipient (SMTP test + invoice template test) -->
            <div>
                <label for="mailTestRecipient" class="form-label">{{ _('Test recipient email') }}</label>
                <input type="email" id="mailTestRecipient" class="form-input" placeholder="you@example.com">
                <p class="text-xs text-text-muted-light dark:text-text-muted-dark mt-1">{{ _('Used to prefill “Send Test Email” and invoice template test sends.') }}</p>
            </div>
        </div>
        
        <!-- Save Button -->
        <div class="flex flex-wrap items-center gap-4">
            <button type="submit" class="btn btn-primary" id="saveConfigBtn">
                <i class="fas fa-save mr-2"></i>{{ _('Save Configuration') }}
            </button>
            <button type="button" onclick="loadConfig()" class="btn btn-secondary">
                <i class="fas fa-undo mr-2"></i>{{ _('Reset') }}
            </button>
        </div>
    </form>
    
    <!-- Save Result Message -->
    <div id="saveResult" class="mt-4 hidden"></div>
</div>

<!-- Configuration Status Card -->
<div class="bg-card-light dark:bg-card-dark p-6 rounded-xl border border-border-light dark:border-border-dark shadow-sm mb-6">
    <div class="flex items-center justify-between mb-4">
        <h2 class="text-lg font-semibold">{{ _('Email Configuration Status') }}</h2>
        <button onclick="refreshStatus()" class="btn btn-sm btn-secondary" id="refreshBtn">
            <i class="fas fa-sync-alt"></i> {{ _('Refresh') }}
        </button>
    </div>
    
    <div id="statusContainer">
        {% if email_status.configured %}
        <div class="bg-green-100 dark:bg-green-900 border border-green-400 dark:border-green-700 text-green-700 dark:text-green-200 px-4 py-3 rounded relative mb-4" role="alert">
            <div class="flex items-center">
                <i class="fas fa-check-circle text-xl mr-3"></i>
                <div>
                    <strong class="font-bold">{{ _('Email is configured!') }}</strong>
                    <span class="block sm:inline">{{ _('Your email settings are properly set up.') }}</span>
                </div>
            </div>
        </div>
        {% else %}
        <div class="bg-red-100 dark:bg-red-900 border border-red-400 dark:border-red-700 text-red-700 dark:text-red-200 px-4 py-3 rounded relative mb-4" role="alert">
            <div class="flex items-center">
                <i class="fas fa-exclamation-triangle text-xl mr-3"></i>
                <div>
                    <strong class="font-bold">{{ _('Email is not configured') }}</strong>
                    <span class="block sm:inline">{{ _('Please configure email settings using the form above.') }}</span>
                </div>
            </div>
        </div>
        {% endif %}
        
        <!-- Configuration Errors -->
        {% if email_status.errors %}
        <div class="bg-red-50 dark:bg-red-900/20 border border-red-300 dark:border-red-700 rounded-lg p-4 mb-4">
            <h3 class="text-red-800 dark:text-red-300 font-semibold mb-2">
                <i class="fas fa-times-circle mr-2"></i>{{ _('Configuration Errors') }}
            </h3>
            <ul class="list-disc list-inside text-red-700 dark:text-red-300">
                {% for error in email_status.errors %}
                <li>{{ error }}</li>
                {% endfor %}
            </ul>
        </div>
        {% endif %}
        
        <!-- Configuration Warnings -->
        {% if email_status.warnings %}
        <div class="bg-yellow-50 dark:bg-yellow-900/20 border border-yellow-300 dark:border-yellow-700 rounded-lg p-4 mb-4">
            <h3 class="text-yellow-800 dark:text-yellow-300 font-semibold mb-2">
                <i class="fas fa-exclamation-circle mr-2"></i>{{ _('Configuration Warnings') }}
            </h3>
            <ul class="list-disc list-inside text-yellow-700 dark:text-yellow-300">
                {% for warning in email_status.warnings %}
                <li>{{ warning }}</li>
                {% endfor %}
            </ul>
        </div>
        {% endif %}
        
        <!-- Current Settings -->
        <div class="bg-bg-light dark:bg-bg-dark border border-border-light dark:border-border-dark rounded-lg p-4">
            <h3 class="font-semibold mb-3">{{ _('Current Email Settings') }}</h3>
            <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                <div>
                    <span class="text-text-muted-light dark:text-text-muted-dark">{{ _('Mail Server') }}:</span>
                    <span class="font-mono">{{ email_status.settings.server }}</span>
                </div>
                <div>
                    <span class="text-text-muted-light dark:text-text-muted-dark">{{ _('Port') }}:</span>
                    <span class="font-mono">{{ email_status.settings.port }}</span>
                </div>
                <div>
                    <span class="text-text-muted-light dark:text-text-muted-dark">{{ _('Username') }}:</span>
                    <span class="font-mono">{{ email_status.settings.username }}</span>
                </div>
                <div>
                    <span class="text-text-muted-light dark:text-text-muted-dark">{{ _('Password Set') }}:</span>
                    <span class="font-mono">
                        {% if email_status.settings.password_set %}
                            <i class="fas fa-check text-green-600"></i> {{ _('Yes') }}
                        {% else %}
                            <i class="fas fa-times text-red-600"></i> {{ _('No') }}
                        {% endif %}
                    </span>
                </div>
                <div>
                    <span class="text-text-muted-light dark:text-text-muted-dark">{{ _('Use TLS') }}:</span>
                    <span class="font-mono">{{ email_status.settings.use_tls }}</span>
                </div>
                <div>
                    <span class="text-text-muted-light dark:text-text-muted-dark">{{ _('Use SSL') }}:</span>
                    <span class="font-mono">{{ email_status.settings.use_ssl }}</span>
                </div>
                <div class="md:col-span-2">
                    <span class="text-text-muted-light dark:text-text-muted-dark">{{ _('Default Sender') }}:</span>
                    <span class="font-mono">{{ email_status.settings.default_sender }}</span>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- Test Email Card -->
<div class="bg-card-light dark:bg-card-dark p-6 rounded-xl border border-border-light dark:border-border-dark shadow-sm mb-6">
    <h2 class="text-lg font-semibold mb-4">{{ _('Send Test Email') }}</h2>
    
    <div id="testEmailForm">
        <div class="mb-4">
            <label for="recipientEmail" class="form-label">
                {{ _('Recipient Email Address') }}
            </label>
            <input 
                type="email" 
                id="recipientEmail" 
                class="form-input md:w-1/2" 
                placeholder="user@example.com"
                required
            >
        </div>
        
        <button onclick="sendTestEmail()" class="btn btn-primary" id="sendTestBtn">
            <i class="fas fa-paper-plane mr-2"></i>{{ _('Send Test Email') }}
        </button>
    </div>
    
    <!-- Test Result Message -->
    <div id="testResult" class="mt-4 hidden"></div>
</div>

<!-- Configuration Guide Card -->
<div class="bg-card-light dark:bg-card-dark p-6 rounded-xl border border-border-light dark:border-border-dark shadow-sm">
    <h2 class="text-lg font-semibold mb-4">{{ _('Configuration Guide') }}</h2>
    
    <div class="prose dark:prose-invert max-w-none">
        <h3 class="text-base font-semibold mb-2">{{ _('Common SMTP Providers') }}</h3>
        <ul class="list-disc list-inside space-y-2 mb-4">
            <li><strong>Gmail:</strong> smtp.gmail.com:587 (TLS) - {{ _('Requires app password') }}</li>
            <li><strong>Outlook/Office365:</strong> smtp.office365.com:587 (TLS)</li>
            <li><strong>SendGrid:</strong> smtp.sendgrid.net:587 (TLS)</li>
            <li><strong>Amazon SES:</strong> email-smtp.[region].amazonaws.com:587 (TLS)</li>
            <li><strong>Mailgun:</strong> smtp.mailgun.org:587 (TLS)</li>
        </ul>
        
        <div class="bg-blue-50 dark:bg-blue-900/20 border border-blue-300 dark:border-blue-700 rounded-lg p-4">
            <h4 class="font-semibold mb-2">
                <i class="fas fa-info-circle mr-2"></i>{{ _('Important Notes') }}
            </h4>
            <ul class="list-disc list-inside space-y-1 text-sm">
                <li>{{ _('Gmail requires an App Password if 2FA is enabled') }}</li>
                <li>{{ _('Restart the application after changing email settings') }}</li>
                <li>{{ _('Check firewall rules if emails are not sending') }}</li>
                <li>{{ _('For production, use a dedicated email service like SendGrid or Amazon SES') }}</li>
            </ul>
        </div>
    </div>
</div>

<script>
// Load configuration on page load
document.addEventListener('DOMContentLoaded', function() {
    loadConfig();
    toggleConfigFields();
    
    // Add event listener for enable checkbox
    document.getElementById('mailEnabled').addEventListener('change', toggleConfigFields);
});

// Toggle config fields based on enabled checkbox
function toggleConfigFields() {
    const enabled = document.getElementById('mailEnabled').checked;
    const fields = document.getElementById('emailConfigFields');
    if (enabled) {
        fields.classList.remove('opacity-50');
        fields.querySelectorAll('input').forEach(input => input.disabled = false);
    } else {
        fields.classList.add('opacity-50');
        fields.querySelectorAll('input').forEach(input => input.disabled = true);
    }
}

// Load configuration from database
async function loadConfig() {
    try {
        const response = await fetch('{{ url_for("admin.get_email_config") }}');
        const config = await response.json();
        
        // Populate form
        document.getElementById('mailEnabled').checked = config.enabled;
        document.getElementById('mailServer').value = config.server || '';
        document.getElementById('mailPort').value = config.port || 587;
        document.getElementById('mailUseTls').checked = config.use_tls;
        document.getElementById('mailUseSsl').checked = config.use_ssl;
        document.getElementById('mailUsername').value = config.username || '';
        document.getElementById('mailDefaultSender').value = config.default_sender || '';
        document.getElementById('mailTestRecipient').value = config.test_recipient || '';
        const rec = document.getElementById('recipientEmail');
        if (rec && (config.test_recipient || '').trim()) {
            rec.value = config.test_recipient.trim();
        }
        
        // Show password status
        const passwordStatus = document.getElementById('passwordStatus');
        if (config.password_set) {
            passwordStatus.textContent = '({{ _("password is set") }})';
            passwordStatus.className = 'text-sm text-green-600';
        } else {
            passwordStatus.textContent = '({{ _("no password set") }})';
            passwordStatus.className = 'text-sm text-gray-500';
        }
        
        toggleConfigFields();
    } catch (error) {
        console.error('Failed to load configuration:', error);
    }
}

// Save configuration to database
document.getElementById('emailConfigForm').addEventListener('submit', async function(e) {
    e.preventDefault();
    
    const saveBtn = document.getElementById('saveConfigBtn');
    const resultDiv = document.getElementById('saveResult');
    
    // Collect form data
    const config = {
        enabled: document.getElementById('mailEnabled').checked,
        server: document.getElementById('mailServer').value.trim(),
        port: parseInt(document.getElementById('mailPort').value),
        use_tls: document.getElementById('mailUseTls').checked,
        use_ssl: document.getElementById('mailUseSsl').checked,
        username: document.getElementById('mailUsername').value.trim(),
        password: document.getElementById('mailPassword').value,
        default_sender: document.getElementById('mailDefaultSender').value.trim(),
        test_recipient: document.getElementById('mailTestRecipient').value.trim()
    };
    
    // Disable button and show loading
    saveBtn.disabled = true;
    saveBtn.innerHTML = '<i class="fas fa-spinner fa-spin mr-2"></i>{{ _("Saving...") }}';
    resultDiv.classList.add('hidden');
    
    try {
        const response = await fetch('{{ url_for("admin.save_email_config") }}', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRFToken': '{{ csrf_token() }}'
            },
            body: JSON.stringify(config)
        });
        
        const data = await response.json();
        
        if (data.success) {
            showSaveResult('success', data.message);
            // Clear password field after successful save
            document.getElementById('mailPassword').value = '';
            // Reload config to update password status
            loadConfig();
            // Refresh status and reload page after 1.5 seconds
            setTimeout(() => {
                window.location.reload();
            }, 1500);
        } else {
            showSaveResult('error', data.message);
        }
    } catch (error) {
        console.error('Failed to save configuration:', error);
        showSaveResult('error', '{{ _("Failed to save configuration. Please try again.") }}');
    } finally {
        // Re-enable button
        saveBtn.disabled = false;
        saveBtn.innerHTML = '<i class="fas fa-save mr-2"></i>{{ _("Save Configuration") }}';
    }
});

// Show save result message
function showSaveResult(type, message) {
    const resultDiv = document.getElementById('saveResult');
    
    if (type === 'success') {
        resultDiv.className = 'mt-4 bg-green-100 dark:bg-green-900 border border-green-400 dark:border-green-700 text-green-700 dark:text-green-200 px-4 py-3 rounded relative';
        resultDiv.innerHTML = `
            <div class="flex items-center">
                <i class="fas fa-check-circle text-xl mr-3"></i>
                <div>
                    <strong class="font-bold">{{ _("Success!") }}</strong>
                    <span class="block sm:inline">${message}</span>
                </div>
            </div>
        `;
    } else {
        resultDiv.className = 'mt-4 bg-red-100 dark:bg-red-900 border border-red-400 dark:border-red-700 text-red-700 dark:text-red-200 px-4 py-3 rounded relative';
        resultDiv.innerHTML = `
            <div class="flex items-center">
                <i class="fas fa-exclamation-circle text-xl mr-3"></i>
                <div>
                    <strong class="font-bold">{{ _("Error") }}</strong>
                    <span class="block sm:inline">${message}</span>
                </div>
            </div>
        `;
    }
    
    resultDiv.classList.remove('hidden');
}

// Refresh configuration status
async function refreshStatus() {
    const refreshBtn = document.getElementById('refreshBtn');
    const icon = refreshBtn.querySelector('i');
    
    // Add spinning animation
    icon.classList.add('fa-spin');
    refreshBtn.disabled = true;
    
    try {
        const response = await fetch('{{ url_for("admin.email_config_status") }}');
        const data = await response.json();
        
        // Reload the page to show updated status
        window.location.reload();
    } catch (error) {
        console.error('Failed to refresh status:', error);
        alert('{{ _("Failed to refresh status. Please try again.") }}');
    } finally {
        icon.classList.remove('fa-spin');
        refreshBtn.disabled = false;
    }
}

// Send test email
async function sendTestEmail() {
    const recipientEmail = document.getElementById('recipientEmail').value.trim();
    const sendBtn = document.getElementById('sendTestBtn');
    const resultDiv = document.getElementById('testResult');
    
    // Validate email
    if (!recipientEmail || !recipientEmail.includes('@')) {
        showResult('error', '{{ _("Please enter a valid email address") }}');
        return;
    }
    
    // Disable button and show loading
    sendBtn.disabled = true;
    sendBtn.innerHTML = '<i class="fas fa-spinner fa-spin mr-2"></i>{{ _("Sending...") }}';
    resultDiv.classList.add('hidden');
    
    try {
        const response = await fetch('{{ url_for("admin.test_email") }}', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRFToken': '{{ csrf_token() }}'
            },
            body: JSON.stringify({ recipient: recipientEmail })
        });
        
        const data = await response.json();
        
        if (data.success) {
            showResult('success', data.message);
        } else {
            showResult('error', data.message);
        }
    } catch (error) {
        console.error('Failed to send test email:', error);
        showResult('error', '{{ _("Failed to send test email. Please check your configuration.") }}');
    } finally {
        // Re-enable button
        sendBtn.disabled = false;
        sendBtn.innerHTML = '<i class="fas fa-paper-plane mr-2"></i>{{ _("Send Test Email") }}';
    }
}

// Show result message
function showResult(type, message) {
    const resultDiv = document.getElementById('testResult');
    
    if (type === 'success') {
        resultDiv.className = 'mt-4 bg-green-100 dark:bg-green-900 border border-green-400 dark:border-green-700 text-green-700 dark:text-green-200 px-4 py-3 rounded relative';
        resultDiv.innerHTML = `
            <div class="flex items-center">
                <i class="fas fa-check-circle text-xl mr-3"></i>
                <div>
                    <strong class="font-bold">{{ _("Success!") }}</strong>
                    <span class="block sm:inline">${message}</span>
                </div>
            </div>
        `;
    } else {
        resultDiv.className = 'mt-4 bg-red-100 dark:bg-red-900 border border-red-400 dark:border-red-700 text-red-700 dark:text-red-200 px-4 py-3 rounded relative';
        resultDiv.innerHTML = `
            <div class="flex items-center">
                <i class="fas fa-exclamation-circle text-xl mr-3"></i>
                <div>
                    <strong class="font-bold">{{ _("Error") }}</strong>
                    <span class="block sm:inline">${message}</span>
                </div>
            </div>
        `;
    }
    
    resultDiv.classList.remove('hidden');
}

// Allow sending with Enter key
document.getElementById('recipientEmail').addEventListener('keypress', function(e) {
    if (e.key === 'Enter') {
        e.preventDefault();
        sendTestEmail();
    }
});
</script>

{% endblock %}