{% extends "layouts/base.html" %}

{% load i18n %}

{% block title %}{% trans "Staff Hierarchy" %} - PX360{% endblock %}

{% block extra_css %}
<style>
.hierarchy-tree {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hierarchy-node {
    margin-left: 2rem;
    position: relative;
}

.hierarchy-node::before {
    content: '';
    position: absolute;
    left: -1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #dee2e6;
}

.hierarchy-node::after {
    content: '';
    position: absolute;
    left: -1rem;
    top: 1.5rem;
    width: 1rem;
    height: 2px;
    background-color: #dee2e6;
}

.hierarchy-node:last-child::before {
    height: 1.5rem;
}

.hierarchy-card {
    border: 2px solid #dee2e6;
    border-radius: 0.5rem;
    padding: 1rem;
    background: white;
    transition: all 0.2s;
    cursor: pointer;
}

.hierarchy-card:hover {
    border-color: #0d6efd;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.hierarchy-card.highlighted {
    border-color: #ffc107;
    background-color: #fff9db;
}

.hierarchy-card.search-result {
    border-color: #28a745;
    background-color: #d4edda;
    box-shadow: 0 0 10px rgba(40, 167, 69, 0.3);
}

.staff-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: bold;
    color: #6c757d;
}

.staff-info h6 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.staff-info small {
    color: #6c757d;
}

.expand-icon {
    font-size: 0.75rem;
    cursor: pointer;
    color: #6c757d;
    transition: transform 0.2s;
}

.expand-icon.rotated {
    transform: rotate(90deg);
}

.direct-reports-badge {
    font-size: 0.75rem;
}

.children-container {
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.children-container.collapsed {
    max-height: 0;
}

.tree-connector {
    position: absolute;
    left: -1rem;
    top: 1.5rem;
    bottom: 0;
    width: 2px;
    background-color: #dee2e6;
}
</style>
{% endblock %}

{% block content %}
<div class="page-header">
    <div class="d-flex justify-content-between align-items-center">
        <div>
            <h1 class="page-title">{% trans "Staff Hierarchy" %}</h1>
            <p class="text-muted">{% trans "View organizational structure and reporting relationships" %}</p>
        </div>
        <div class="btn-group">
            <a href="{% url 'organizations:staff_list' %}" class="btn btn-outline-secondary">
                <i class="fas fa-list"></i> {% trans "List View" %}
            </a>
            {% if user.is_px_admin or user.is_hospital_admin %}
            <a href="{% url 'organizations:staff_create' %}" class="btn btn-primary">
                <i class="fas fa-plus"></i> {% trans "Add New Staff" %}
            </a>
            {% endif %}
        </div>
    </div>
</div>

<!-- Statistics -->
<div class="row mb-4">
    <div class="col-md-4">
        <div class="card">
            <div class="card-body">
                <div class="d-flex align-items-center">
                    <div class="flex-shrink-0">
                        <i class="fas fa-users fa-2x text-primary"></i>
                    </div>
                    <div class="flex-grow-1 ms-3">
                        <h6 class="text-muted mb-0">{% trans "Total Staff" %}</h6>
                        <h3 class="mb-0">{{ total_staff }}</h3>
                    </div>
                </div>
            </div>
        </div>
    </div>
    <div class="col-md-4">
        <div class="card">
            <div class="card-body">
                <div class="d-flex align-items-center">
                    <div class="flex-shrink-0">
                        <i class="fas fa-user-tie fa-2x text-success"></i>
                    </div>
                    <div class="flex-grow-1 ms-3">
                        <h6 class="text-muted mb-0">{% trans "Top Managers" %}</h6>
                        <h3 class="mb-0">{{ top_managers }}</h3>
                    </div>
                </div>
            </div>
        </div>
    </div>
    <div class="col-md-4">
        <div class="card">
            <div class="card-body">
                <div class="d-flex align-items-center">
                    <div class="flex-shrink-0">
                        <i class="fas fa-sitemap fa-2x text-info"></i>
                    </div>
                    <div class="flex-grow-1 ms-3">
                        <h6 class="text-muted mb-0">{% trans "Hierarchy Levels" %}</h6>
                        <h3 class="mb-0">{% trans "Multi-level" %}</h3>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- Filters -->
<div class="card mb-4">
    <div class="card-body">
        <form method="get" class="row g-3">
            <div class="col-md-3">
                <label class="form-label">{% trans "Hospital" %}</label>
                <select name="hospital" class="form-select">
                    <option value="">{% trans "All Hospitals" %}</option>
                    {% for hospital in hospitals %}
                    <option value="{{ hospital.id }}" {% if request.GET.hospital == hospital.id|stringformat:"s" %}selected{% endif %}>
                        {{ hospital.name }}
                    </option>
                    {% endfor %}
                </select>
            </div>
            <div class="col-md-3">
                <label class="form-label">{% trans "Department" %}</label>
                <select name="department" class="form-select">
                    <option value="">{% trans "All Departments" %}</option>
                    {% for department in departments %}
                    <option value="{{ department.id }}" {% if request.GET.department == department.id|stringformat:"s" %}selected{% endif %}>
                        {{ department.name }}
                    </option>
                    {% endfor %}
                </select>
            </div>
            <div class="col-md-4">
                <label class="form-label">{% trans "Search Staff" %}</label>
                <div class="input-group">
                    <input type="text" name="search" class="form-control" placeholder="{% trans 'Search by name or employee ID...' %}" value="{{ request.GET.search|default:'' }}">
                    <button type="submit" class="btn btn-primary">
                        <i class="fas fa-search"></i>
                    </button>
                </div>
            </div>
            <div class="col-md-2 d-flex align-items-end">
                <a href="{% url 'organizations:staff_hierarchy' %}" class="btn btn-outline-secondary w-100">
                    <i class="fas fa-times"></i> {% trans "Clear" %}
                </a>
            </div>
        </form>
    </div>
</div>

<!-- Search Result Message -->
{% if search_result %}
<div class="alert alert-info alert-dismissible fade show" role="alert">
    <i class="fas fa-search me-2"></i>
    {% trans "Found staff member:" %} <strong>{{ search_result.get_full_name }}</strong>
    <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
</div>
{% endif %}

<!-- Hierarchy Tree -->
{% if hierarchy %}
<div class="card">
    <div class="card-body">
        <div class="d-flex justify-content-between align-items-center mb-3">
            <h5 class="mb-0">{% trans "Organizational Structure" %}</h5>
            <button type="button" class="btn btn-sm btn-outline-primary" onclick="expandAll()">
                <i class="fas fa-expand"></i> {% trans "Expand All" %}
            </button>
            <button type="button" class="btn btn-sm btn-outline-secondary" onclick="collapseAll()">
                <i class="fas fa-compress"></i> {% trans "Collapse All" %}
            </button>
        </div>
        
        <div class="hierarchy-tree" id="hierarchyTree">
            {% for node in hierarchy %}
                {% include 'organizations/hierarchy_node.html' %}
            {% endfor %}
        </div>
    </div>
</div>
{% else %}
<div class="card">
    <div class="card-body text-center py-5">
        <i class="fas fa-sitemap fa-4x text-muted mb-3"></i>
        <h4 class="text-muted">{% trans "No Staff Hierarchy Found" %}</h4>
        <p class="text-muted">{% trans "There are no staff members with reporting relationships in the selected filters." %}</p>
        {% if user.is_px_admin or user.is_hospital_admin %}
        <a href="{% url 'organizations:staff_create' %}" class="btn btn-primary mt-3">
            <i class="fas fa-plus"></i> {% trans "Add Staff Member" %}
        </a>
        {% endif %}
    </div>
</div>
{% endif %}

{% endblock %}

{% block extra_js %}
<script>
// Toggle node expansion
function toggleNode(nodeId) {
    const childrenContainer = document.getElementById(`children-${nodeId}`);
    const expandIcon = document.getElementById(`expand-${nodeId}`);
    
    if (childrenContainer) {
        childrenContainer.classList.toggle('collapsed');
        if (expandIcon) {
            expandIcon.classList.toggle('rotated');
        }
    }
}

// Expand all nodes
function expandAll() {
    document.querySelectorAll('.children-container').forEach(container => {
        container.classList.remove('collapsed');
    });
    document.querySelectorAll('.expand-icon').forEach(icon => {
        icon.classList.remove('rotated');
    });
}

// Collapse all nodes
function collapseAll() {
    document.querySelectorAll('.children-container').forEach(container => {
        container.classList.add('collapsed');
    });
    document.querySelectorAll('.expand-icon').forEach(icon => {
        icon.classList.add('rotated');
    });
}

// Scroll to search result
{% if search_result %}
document.addEventListener('DOMContentLoaded', function() {
    const searchResult = document.querySelector('.hierarchy-card.search-result');
    if (searchResult) {
        searchResult.scrollIntoView({ behavior: 'smooth', block: 'center' });
        
        // Expand all parent nodes
        let parent = searchResult.closest('.hierarchy-node');
        while (parent) {
            const childrenContainer = parent.parentElement.closest('.children-container');
            if (childrenContainer) {
                childrenContainer.classList.remove('collapsed');
            }
            const expandIcon = parent.querySelector('.expand-icon');
            if (expandIcon) {
                expandIcon.classList.remove('rotated');
            }
            parent = parent.parentElement.closest('.hierarchy-node');
        }
        
        // Highlight animation
        setTimeout(() => {
            searchResult.style.boxShadow = '0 0 20px rgba(40, 167, 69, 0.5)';
        }, 100);
        
        setTimeout(() => {
            searchResult.style.boxShadow = '';
        }, 2000);
    }
});
{% endif %}
</script>
{% endblock %}