{% extends "base.html" %}
{% block title %}{{ delivery.delivery_number }} — Jason Studio{% endblock %}
{% block content %}
<div class="d-flex justify-content-end mb-3 flex-wrap gap-2">
    <a href="{% url 'order_fulfilment' event.pk customer.pk %}" class="btn btn-outline-secondary btn-sm">Back to Fulfilment</a>
</div>

<h4 class="mb-1">Delivery Note — {{ delivery.delivery_number }}</h4>
<p class="text-muted mb-4">
    {{ customer.user.get_full_name|default:customer.user.username }}
    — {{ event.name }}
    — Order {{ order.ref }}
    — {{ delivery.get_method_display }}
    — {{ delivery.date_created|date:"N j, Y g:i A" }}
</p>

<form method="post">
    {% csrf_token %}

    <!-- URL -->
    <div class="card mb-4">
        <div class="card-header"><strong>Details</strong></div>
        <div class="card-body">
            <div class="mb-3">
                <label for="url" class="form-label">URL</label>
                <input type="url" class="form-control" id="url" name="url"
                       value="{{ delivery.url }}" placeholder="Download link (optional)">
            </div>
            <div class="mb-0">
                <label for="notes" class="form-label">Notes</label>
                <textarea class="form-control" id="notes" name="notes" rows="3">{{ delivery.notes }}</textarea>
            </div>
        </div>
    </div>

    <!-- Line Items -->
    <div class="card mb-4">
        <div class="card-header d-flex justify-content-between align-items-center">
            <strong>Items</strong>
            <button type="button" class="btn btn-sm btn-outline-primary" id="add-item-btn">
                <i class="fa-solid fa-plus"></i> Add Item
            </button>
        </div>
        <div class="card-body p-0">
            <table class="table table-sm mb-0" id="items-table">
                <thead>
                    <tr>
                        <th style="width:60%">Description</th>
                        <th style="width:20%">Qty</th>
                        <th style="width:20%"></th>
                    </tr>
                </thead>
                <tbody>
                    {% for item in items %}
                    <tr class="item-row">
                        <td>
                            <input type="text" class="form-control form-control-sm"
                                   name="item_{{ forloop.counter0 }}_description"
                                   value="{{ item.description }}" required>
                        </td>
                        <td>
                            <input type="number" class="form-control form-control-sm"
                                   name="item_{{ forloop.counter0 }}_qty"
                                   value="{{ item.qty }}" min="1">
                        </td>
                        <td class="text-end">
                            <button type="button" class="btn btn-sm btn-outline-danger remove-item-btn">
                                <i class="fa-solid fa-trash"></i>
                            </button>
                        </td>
                    </tr>
                    {% endfor %}
                </tbody>
            </table>
        </div>
    </div>

    <div class="d-flex gap-2">
        <button type="submit" class="btn btn-primary">Save</button>
        <a href="{% url 'order_fulfilment' event.pk customer.pk %}" class="btn btn-outline-secondary">Cancel</a>
    </div>
</form>

<form method="post" action="{% url 'delivery_delete' delivery.pk %}" class="mt-4 text-end"
      onsubmit="return confirm('Delete delivery {{ delivery.delivery_number }}? This cannot be undone.');">
    {% csrf_token %}
    <button type="submit" class="btn btn-outline-danger">
        <i class="fa-solid fa-trash"></i> Delete Delivery
    </button>
</form>

<script>
document.addEventListener('DOMContentLoaded', function() {
    const tbody = document.querySelector('#items-table tbody');
    const addBtn = document.getElementById('add-item-btn');

    function getNextIndex() {
        return tbody.querySelectorAll('.item-row').length;
    }

    addBtn.addEventListener('click', function() {
        const idx = getNextIndex();
        const row = document.createElement('tr');
        row.className = 'item-row';
        row.innerHTML = `
            <td><input type="text" class="form-control form-control-sm" name="item_${idx}_description" required></td>
            <td><input type="number" class="form-control form-control-sm" name="item_${idx}_qty" value="1" min="1"></td>
            <td class="text-end"><button type="button" class="btn btn-sm btn-outline-danger remove-item-btn"><i class="fa-solid fa-trash"></i></button></td>
        `;
        tbody.appendChild(row);
    });

    tbody.addEventListener('click', function(e) {
        const btn = e.target.closest('.remove-item-btn');
        if (btn) {
            btn.closest('.item-row').remove();
            // Re-index names
            tbody.querySelectorAll('.item-row').forEach(function(row, i) {
                row.querySelectorAll('input').forEach(function(input) {
                    const field = input.name.split('_').pop();
                    input.name = `item_${i}_${field}`;
                });
            });
        }
    });
});
</script>
{% endblock %}