{% extends "base.html" %}

{% block content %}
    <h2>User Loans</h2>
    <p class="relationship-note">
        <strong>Relationship:</strong> One user can loan multiple tablets (one-to-many).
        This page demonstrates the many-to-many relationship between users and tablets via the loans table.
    </p>
    
    <!-- Search Box -->
    <div class="search-container">
        <input type="text" id="searchInput" placeholder="Search by user name, identification, tablet brand, model, or serial number..." 
               onkeyup="filterUsers()">
        <button onclick="clearSearch()" class="btn btn-clear">Clear</button>
    </div>
    
    <div class="user-loans-container" id="userLoansContainer">
        {% for user_data in users_with_loans %}
            {% set user = user_data.user %}
            {% set loans = user_data.loans %}
            {% set active_loans = loans|selectattr('status', 'equalto', 'active')|list %}
            {% set returned_loans = loans|selectattr('status', 'equalto', 'returned')|list %}
            
            <div class="user-card" 
                 data-search="{{ user.name|lower }} {{ user.identification|lower }} {% for loan in loans %}{{ loan.brand|lower }} {{ loan.model|lower }} {{ loan.serial_number|lower }} {% endfor %}">
                <div class="user-header">
                    <h3>{{ user.name }} ({{ user.identification }})</h3>
                    <span class="loan-count">
                        {{ active_loans|length }} active, {{ returned_loans|length }} past
                    </span>
                </div>
                
                {% if active_loans %}
                    <div class="loans-section current-loans">
                        <h4>Current Loans</h4>
                        <div class="table-container">
                            <table class="loans-table">
                                <thead>
                                    <tr>
                                        <th>Tablet</th>
                                        <th>Serial Number</th>
                                        <th>Loan Date</th>
                                        <th>Status</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    {% for loan in active_loans %}
                                        <tr class="loan-row status-{{ loan.status }}">
                                            <td>{{ loan.brand }} {{ loan.model }}</td>
                                            <td>{{ loan.serial_number }}</td>
                                            <td>{{ loan.loan_date }}</td>
                                            <td>
                                                <span class="status-badge status-{{ loan.status }}">
                                                    {{ loan.status }}
                                                </span>
                                            </td>
                                        </tr>
                                    {% endfor %}
                                </tbody>
                            </table>
                        </div>
                    </div>
                {% endif %}
                
                {% if returned_loans %}
                    <div class="loans-section past-loans">
                        <h4>
                            <button class="expand-toggle" onclick="togglePastLoans(this)">
                                ▶ Past Loans ({{ returned_loans|length }})
                            </button>
                        </h4>
                        <div class="past-loans-content" style="display: none;">
                            <div class="table-container">
                                <table class="loans-table">
                                    <thead>
                                        <tr>
                                            <th>Tablet</th>
                                            <th>Serial Number</th>
                                            <th>Loan Date</th>
                                            <th>Return Date</th>
                                            <th>Status</th>
                                        </tr>
                                    </thead>
                                    <tbody>
                                        {% for loan in returned_loans %}
                                            <tr class="loan-row status-{{ loan.status }}">
                                                <td>{{ loan.brand }} {{ loan.model }}</td>
                                                <td>{{ loan.serial_number }}</td>
                                                <td>{{ loan.loan_date }}</td>
                                                <td>{{ loan.return_date or '-' }}</td>
                                                <td>
                                                    <span class="status-badge status-{{ loan.status }}">
                                                        {{ loan.status }}
                                                    </span>
                                                </td>
                                            </tr>
                                        {% endfor %}
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>
                {% endif %}
                
                {% if not active_loans and not returned_loans %}
                    <p class="no-loans">No loans recorded for this user.</p>
                {% endif %}
            </div>
        {% endfor %}
        
        {% if users_with_loans|length == 0 %}
            <p class="no-data">No users found. Add users and loan tablets to see data here.</p>
        {% endif %}
    </div>

    <script>
        function filterUsers() {
            const search = document.getElementById('searchInput').value.toLowerCase();
            const cards = document.querySelectorAll('.user-card');
            
            cards.forEach(card => {
                const searchText = card.getAttribute('data-search') || '';
                card.style.display = searchText.includes(search) ? '' : 'none';
            });
        }
        
        function clearSearch() {
            document.getElementById('searchInput').value = '';
            filterUsers();
        }
        
        function togglePastLoans(button) {
            const content = button.closest('.loans-section').querySelector('.past-loans-content');
            const isExpanded = content.style.display !== 'none';
            
            content.style.display = isExpanded ? 'none' : 'block';
            const count = button.textContent.match(/\d+/)[0];
            button.textContent = isExpanded ? '▶ Past Loans (' + count + ')' : '▼ Past Loans (' + count + ') ';
        }
    </script>

    <style>
        .relationship-note {
            background-color: #e8f5e9;
            padding: 12px;
            border-radius: 4px;
            margin-bottom: 20px;
            border-left: 4px solid #4CAF50;
        }
        
        .search-container {
            margin-bottom: 20px;
            display: flex;
            gap: 10px;
        }
        
        .search-container input {
            flex: 1;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }
        
        .btn-clear {
            background-color: #999;
        }
        
        .user-loans-container {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .user-card {
            background-color: white;
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 15px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        .user-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 1px solid #eee;
        }
        
        .user-header h3 {
            margin: 0;
            color: #333;
        }
        
        .loan-count {
            color: #666;
            font-style: italic;
        }
        
        .loans-section {
            margin-top: 15px;
        }
        
        .loans-section h4 {
            margin: 0 0 10px 0;
            color: #555;
        }
        
        .expand-toggle {
            background: none;
            border: none;
            color: #4CAF50;
            cursor: pointer;
            font-size: 14px;
            padding: 0;
        }
        
        .expand-toggle:hover {
            text-decoration: underline;
        }
        
        .loans-table {
            width: 100%;
            border-collapse: collapse;
        }
        
        .loans-table th,
        .loans-table td {
            padding: 10px;
            text-align: left;
            border-bottom: 1px solid #eee;
        }
        
        .loans-table th {
            background-color: #f5f5f5;
            font-weight: bold;
        }
        
        .loan-row.status-active {
            background-color: #fff8e1;
        }
        
        .loan-row.status-returned {
            background-color: #f5f5f5;
        }
        
        .status-badge {
            padding: 4px 8px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: bold;
            text-transform: capitalize;
        }
        
        .status-badge.status-active {
            background-color: #ffc107;
            color: #000;
        }
        
        .status-badge.status-returned {
            background-color: #9E9E9E;
            color: white;
        }
        
        .no-loans {
            color: #999;
            font-style: italic;
            text-align: center;
            padding: 20px;
        }
        
        .no-data {
            text-align: center;
            padding: 40px;
            color: #999;
        }
    </style>
{% endblock %}