<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Upload CSV File</title>
    {% include 'favicon.html' %}
    <link href="{{ url_for('static', filename='css/bootstrap.min.css') }}" rel="stylesheet">
    <link href="{{ url_for('static', filename='css/bootstrap-icons.min.css') }}" rel="stylesheet">
    <link href="{{ url_for('static', filename='css/layout.css') }}" rel="stylesheet">
    <link href="{{ url_for('static', filename='css/upload_page.css') }}" rel="stylesheet">
</head>
<body class="d-flex flex-column">
    {% include 'header.html' %}
    
    <main class="container mt-5 pt-4 flex-grow-1">
        <div class="upload-container">
            <div class="d-flex justify-content-between align-items-center mb-4">
                <h1 class="h2">
                    {% if mode == "import" %} 
                        <i class="bi bi-upload me-2"></i>Import Items From CSV 
                    {% elif mode == "edit" %} 
                        <i class="bi bi-pencil-square me-2"></i>Update Items Using CSV 
                    {% endif %}
                </h1>
            </div>

            <!-- Flash messages (errors only) -->
            {% with messages = get_flashed_messages(category_filter=["error"]) %}
                {% if messages %}
                    <div class="alert alert-danger error-details mb-4">
                        <h2 class="h5 mb-3">Errors found during submission:</h2>
                        <ul class="mb-0">
                            {% for message in messages %}
                                <li>{{ message }}</li>
                            {% endfor %}
                        </ul>
                    </div>
                {% endif %}
            {% endwith %}

            <!-- Upload form card -->
            <div class="card shadow-sm">
                <div class="card-body">
                    <form method="POST" enctype="multipart/form-data" 
                        {% if mode == "import" %}
                            action="/import_from_csv"
                        {% elif mode == "edit" %}
                            action="/edit_using_csv"
                        {% endif %}>
                        
                        <div class="mb-4">
                            <label for="file" class="form-label fw-bold">Select CSV File:</label>
                            <input class="form-control form-control-lg" 
                                   type="file" 
                                   id="file" 
                                   name="file" 
                                   accept=".csv" 
                                   required>
                            <div class="form-text">
                                Please upload a properly formatted CSV file
                            </div>
                        </div>

                        <div class="d-flex justify-content-end gap-3">
                            <a href="/" class="btn btn-outline-secondary">Cancel</a>
                            <button type="submit" class="btn btn-primary px-4">
                                Upload
                            </button>
                        </div>
                    </form>
                </div>
            </div>
            
            <!-- Optional help section -->
            <div class="mt-4">
                <div class="accordion" id="helpAccordion">
                    <div class="accordion-item">
                        <h2 class="accordion-header">
                            <button class="accordion-button collapsed" 
                                    type="button" 
                                    data-bs-toggle="collapse" 
                                    data-bs-target="#helpContent">
                                <i class="bi bi-question-circle me-2"></i>
                                CSV Format Help
                            </button>
                        </h2>
                        <div id="helpContent" class="accordion-collapse collapse" data-bs-parent="#helpAccordion">
                            <div class="accordion-body">
                                <p>Your CSV must include these columns (case-sensitive):</p>
                                <ul class="list-unstyled">
                                    {% for attrib in item_attributes %}
                                    <li>
                                        <code>{{ attrib.display_name }}</code>
                                        {% if attrib.required %}<span class="badge bg-danger ms-2">Required</span>{% endif %}
                                        {% if attrib.primary %}<span class="badge bg-primary ms-2">Primary</span>{% endif %}
                                        {% if attrib.unique %}<span class="badge bg-warning text-dark ms-2">Unique</span>{% endif %}
                                    </li>
                                    {% endfor %}
                                </ul>
                                <div class="alert alert-info mt-3">
                                    <strong>Format requirements:</strong>
                                    <ul class="mt-2 mb-0">
                                        <li>Delimiter: <code>|</code> (pipe character)</li>
                                        <li>First row must contain headers exactly as shown above</li>
                                        {% if mode == "edit" %}
                                        <li>Existing items must include their primary key value</li>
                                        {% endif %}
                                    </ul>
                                </div>
                                
                                <a href="{{ url_for('uploadcsv.download_template') }}" class="btn btn-sm btn-outline-primary mt-2">
                                    <i class="bi bi-download me-1"></i>Download CSV Template
                                </a>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </main>    
    {% include 'footer.html' %}
    <!-- Bootstrap JS -->
    <script src="{{ url_for('static', filename='js/bootstrap.bundle.min.js') }}"></script>
</body>
</html>