{% extends "base.html" %}
{% load static %}

{% block title %}System Configuration - {{ block.super }}{% endblock %}

{% block content %}
<div class="container-fluid">
    <!-- Page Header -->
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h1 class="h3 mb-1">
                <i class="fas fa-cogs me-2"></i>System Configuration
            </h1>
            <nav aria-label="breadcrumb">
                <ol class="breadcrumb mb-0">
                    <li class="breadcrumb-item"><a href="{% url 'core:dashboard' %}">Dashboard</a></li>
                    <li class="breadcrumb-item active">System Configuration</li>
                </ol>
            </nav>
        </div>
        <div class="btn-group">
            <button type="button" class="btn btn-outline-secondary dropdown-toggle" data-bs-toggle="dropdown">
                <i class="fas fa-cog me-2"></i>Actions
            </button>
            <ul class="dropdown-menu">
                <li><a class="dropdown-item" href="#" onclick="exportConfigurations()">
                    <i class="fas fa-download me-2"></i>Export Configuration
                </a></li>
                <li><a class="dropdown-item" href="#" onclick="importConfigurations()">
                    <i class="fas fa-upload me-2"></i>Import Configuration
                </a></li>
                <li><hr class="dropdown-divider"></li>
                <li><a class="dropdown-item" href="#" onclick="resetToDefaults()">
                    <i class="fas fa-undo me-2"></i>Reset to Defaults
                </a></li>
            </ul>
            <button type="button" class="btn btn-primary" onclick="addConfiguration()">
                <i class="fas fa-plus me-2"></i>Add Configuration
            </button>
        </div>
    </div>

    <!-- Search and Filter -->
    <div class="card mb-4">
        <div class="card-body">
            <div class="row g-3">
                <div class="col-md-4">
                    <div class="input-group">
                        <input type="text" class="form-control" placeholder="Search configurations..." 
                               id="configSearch" onkeyup="filterConfigurations()">
                        <span class="input-group-text">
                            <i class="fas fa-search"></i>
                        </span>
                    </div>
                </div>
                <div class="col-md-3">
                    <select class="form-select" id="categoryFilter" onchange="filterConfigurations()">
                        <option value="">All Categories</option>
                        {% for category in categories %}
                        <option value="{{ category }}">{{ category|title }}</option>
                        {% endfor %}
                    </select>
                </div>
                <div class="col-md-3">
                    <select class="form-select" id="scopeFilter" onchange="filterConfigurations()">
                        <option value="">All Scopes</option>
                        <option value="global">Global</option>
                        <option value="tenant">Tenant-specific</option>
                    </select>
                </div>
                <div class="col-md-2">
                    <button type="button" class="btn btn-outline-secondary w-100" onclick="clearFilters()">
                        <i class="fas fa-times me-1"></i>Clear
                    </button>
                </div>
            </div>
        </div>
    </div>

    <!-- Configuration Categories -->
    {% if grouped_configurations %}
        {% for category, configs in grouped_configurations.items %}
        <div class="config-category mb-4" data-category="{{ category|lower }}">
            <div class="card">
                <div class="card-header bg-primary text-white">
                    <div class="d-flex justify-content-between align-items-center">
                        <h5 class="mb-0">
                            <i class="fas fa-folder me-2"></i>{{ category|title }}
                        </h5>
                        <span class="badge bg-light text-dark">{{ configs|length }} item{{ configs|length|pluralize }}</span>
                    </div>
                </div>
                
                <div class="card-body p-0">
                    {% for config in configs %}
                    <div class="config-item border-bottom p-3 {% if config.is_sensitive %}bg-warning-subtle{% endif %} {% if config.is_readonly %}bg-light{% endif %}" 
                         data-key="{{ config.key|lower }}" data-scope="{% if config.tenant %}tenant{% else %}global{% endif %}">
                        <div class="row align-items-start">
                            <div class="col-lg-3">
                                <div class="mb-2">
                                    <code class="config-key">{{ config.key }}</code>
                                </div>
                                
                                <div class="d-flex flex-wrap gap-1">
                                    <span class="badge bg-primary">{{ config.data_type }}</span>
                                    
                                    {% if config.is_sensitive %}
                                    <span class="badge bg-warning">
                                        <i class="fas fa-lock me-1"></i>Sensitive
                                    </span>
                                    {% endif %}
                                    
                                    {% if config.is_readonly %}
                                    <span class="badge bg-secondary">
                                        <i class="fas fa-eye me-1"></i>Read-only
                                    </span>
                                    {% endif %}
                                    
                                    {% if config.is_encrypted %}
                                    <span class="badge bg-dark">
                                        <i class="fas fa-shield-alt me-1"></i>Encrypted
                                    </span>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="col-lg-6">
                                {% if config.description %}
                                <div class="mb-2">
                                    <small class="text-muted">{{ config.description }}</small>
                                </div>
                                {% endif %}
                                
                                <div class="config-value p-2 bg-light rounded border">
                                    {% if config.is_sensitive and not config.is_encrypted %}
                                        <span class="text-muted">
                                            <i class="fas fa-eye-slash me-1"></i>[Hidden for security]
                                        </span>
                                    {% elif config.is_encrypted %}
                                        <span class="text-muted">
                                            <i class="fas fa-lock me-1"></i>[Encrypted value]
                                        </span>
                                    {% else %}
                                        <code>{{ config.value|default:"<em>No value set</em>" }}</code>
                                    {% endif %}
                                </div>
                                
                                {% if config.default_value %}
                                <div class="mt-2">
                                    <small class="text-muted">
                                        <strong>Default:</strong> <code>{{ config.default_value }}</code>
                                    </small>
                                </div>
                                {% endif %}
                            </div>
                            
                            <div class="col-lg-3">
                                <div class="d-flex justify-content-end mb-2">
                                    {% if not config.is_readonly %}
                                    <button class="btn btn-sm btn-outline-primary me-1" 
                                            onclick="editConfiguration('{{ config.id }}')"
                                            title="Edit Configuration">
                                        <i class="fas fa-edit"></i>
                                    </button>
                                    {% endif %}
                                    
                                    <button class="btn btn-sm btn-outline-info me-1" 
                                            onclick="viewConfigDetails('{{ config.id }}')"
                                            title="View Details">
                                        <i class="fas fa-info-circle"></i>
                                    </button>
                                    
                                    {% if config.validation_rules %}
                                    <button class="btn btn-sm btn-outline-secondary" 
                                            onclick="showValidationRules('{{ config.id }}')"
                                            title="Validation Rules">
                                        <i class="fas fa-check-circle"></i>
                                    </button>
                                    {% endif %}
                                </div>
                                
                                <div class="text-end">
                                    <small class="text-muted d-block">
                                        {% if config.tenant %}
                                            <i class="fas fa-building me-1"></i>{{ config.tenant.name }}
                                        {% else %}
                                            <i class="fas fa-globe me-1"></i>Global
                                        {% endif %}
                                    </small>
                                    
                                    {% if config.required_permission %}
                                    <small class="text-muted d-block">
                                        <i class="fas fa-key me-1"></i>{{ config.required_permission }}
                                    </small>
                                    {% endif %}
                                    
                                    <small class="text-muted d-block">
                                        <i class="fas fa-clock me-1"></i>{{ config.updated_at|date:"M d, Y H:i" }}
                                    </small>
                                </div>
                            </div>
                        </div>
                        
                        {% if config.validation_rules %}
                        <div class="mt-3 pt-3 border-top">
                            <div class="collapse" id="validation-{{ config.id }}">
                                <h6 class="text-muted">
                                    <i class="fas fa-rules me-1"></i>Validation Rules
                                </h6>
                                <pre class="bg-light p-2 rounded"><code>{{ config.validation_rules|pprint }}</code></pre>
                            </div>
                            <button class="btn btn-sm btn-link text-muted p-0" 
                                    data-bs-toggle="collapse" 
                                    data-bs-target="#validation-{{ config.id }}">
                                <i class="fas fa-chevron-down me-1"></i>Show Validation Rules
                            </button>
                        </div>
                        {% endif %}
                    </div>
                    {% endfor %}
                </div>
            </div>
        </div>
        {% endfor %}
    {% else %}
        <div class="card">
            <div class="card-body text-center py-5">
                <i class="fas fa-cogs fa-3x text-muted mb-3"></i>
                <h5 class="text-muted">No configurations found</h5>
                <p class="text-muted">No system configurations are currently available.</p>
                <button type="button" class="btn btn-primary" onclick="addConfiguration()">
                    <i class="fas fa-plus me-2"></i>Add First Configuration
                </button>
            </div>
        </div>
    {% endif %}
</div>

<!-- Configuration Modal -->
<div class="modal fade" id="configModal" tabindex="-1">
    <div class="modal-dialog modal-lg">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Configuration Details</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body" id="configModalBody">
                <!-- Content loaded dynamically -->
            </div>
        </div>
    </div>
</div>

<script>
// Configuration management functionality
function filterConfigurations() {
    const searchTerm = document.getElementById('configSearch').value.toLowerCase();
    const categoryFilter = document.getElementById('categoryFilter').value.toLowerCase();
    const scopeFilter = document.getElementById('scopeFilter').value;
    
    const categories = document.querySelectorAll('.config-category');
    
    categories.forEach(category => {
        const categoryName = category.dataset.category;
        let categoryVisible = false;
        
        // Check if category matches filter
        if (categoryFilter && categoryName !== categoryFilter) {
            category.style.display = 'none';
            return;
        }
        
        const items = category.querySelectorAll('.config-item');
        items.forEach(item => {
            const key = item.dataset.key;
            const scope = item.dataset.scope;
            const text = item.textContent.toLowerCase();
            
            const matchesSearch = !searchTerm || text.includes(searchTerm);
            const matchesScope = !scopeFilter || scope === scopeFilter;
            
            if (matchesSearch && matchesScope) {
                item.style.display = 'block';
                categoryVisible = true;
            } else {
                item.style.display = 'none';
            }
        });
        
        category.style.display = categoryVisible ? 'block' : 'none';
    });
}

function clearFilters() {
    document.getElementById('configSearch').value = '';
    document.getElementById('categoryFilter').value = '';
    document.getElementById('scopeFilter').value = '';
    filterConfigurations();
}

function editConfiguration(configId) {
    // Load configuration edit form
    fetch(`/core/configurations/${configId}/edit/`)
        .then(response => response.text())
        .then(html => {
            document.getElementById('configModalBody').innerHTML = html;
            new bootstrap.Modal(document.getElementById('configModal')).show();
        })
        .catch(error => {
            console.error('Error loading configuration:', error);
            alert('Error loading configuration details');
        });
}

function viewConfigDetails(configId) {
    // Load configuration details
    fetch(`/core/configurations/${configId}/`)
        .then(response => response.text())
        .then(html => {
            document.getElementById('configModalBody').innerHTML = html;
            new bootstrap.Modal(document.getElementById('configModal')).show();
        })
        .catch(error => {
            console.error('Error loading configuration:', error);
            alert('Error loading configuration details');
        });
}

function showValidationRules(configId) {
    const validationElement = document.getElementById(`validation-${configId}`);
    if (validationElement) {
        new bootstrap.Collapse(validationElement).toggle();
    }
}

function addConfiguration() {
    // Load new configuration form
    fetch('/core/configurations/add/')
        .then(response => response.text())
        .then(html => {
            document.getElementById('configModalBody').innerHTML = html;
            new bootstrap.Modal(document.getElementById('configModal')).show();
        })
        .catch(error => {
            console.error('Error loading form:', error);
            alert('Error loading configuration form');
        });
}

function exportConfigurations() {
    const categoryFilter = document.getElementById('categoryFilter').value;
    const scopeFilter = document.getElementById('scopeFilter').value;
    
    const params = new URLSearchParams();
    if (categoryFilter) params.append('category', categoryFilter);
    if (scopeFilter) params.append('scope', scopeFilter);
    
    window.open(`/core/configurations/export/?${params}`, '_blank');
}

function importConfigurations() {
    // Implementation for configuration import
    alert('Configuration import functionality would be implemented here');
}

function resetToDefaults() {
    if (confirm('Are you sure you want to reset all configurations to their default values? This action cannot be undone.')) {
        fetch('/core/configurations/reset/', {
            method: 'POST',
            headers: {
                'X-CSRFToken': getCsrfToken()
            }
        })
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                location.reload();
            } else {
                alert('Error resetting configurations: ' + data.error);
            }
        })
        .catch(error => {
            console.error('Error:', error);
            alert('Error resetting configurations');
        });
    }
}

function getCsrfToken() {
    return document.querySelector('[name=csrfmiddlewaretoken]').value;
}

// Keyboard shortcuts
document.addEventListener('keydown', function(e) {
    if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') {
        return;
    }
    
    switch (e.key) {
        case '/':
            e.preventDefault();
            document.getElementById('configSearch').focus();
            break;
        case 'n':
            e.preventDefault();
            addConfiguration();
            break;
        case 'r':
            e.preventDefault();
            location.reload();
            break;
    }
});
</script>

<style>
.config-key {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    color: #495057;
    background: #f8f9fa;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    border: 1px solid #dee2e6;
}

.config-value {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-break: break-all;
}

.config-item {
    transition: all 0.2s ease;
}

.config-item:hover {
    background-color: rgba(0, 0, 0, 0.02) !important;
}

.bg-warning-subtle {
    background-color: #fff3cd !important;
}

.badge {
    font-size: 0.75rem;
}

@media (max-width: 768px) {
    .config-item .row {
        flex-direction: column;
    }
    
    .config-item .col-lg-3,
    .config-item .col-lg-6 {
        margin-bottom: 1rem;
    }
}
</style>
{% endblock %}