{% extends 'base.html' %}
{% load static humanize %}

{% block content %}
<div class="card">
    <div class="card-header d-flex justify-content-between align-items-center">
        <h5 class="mb-0">Expenses</h5>
        <div>
            <a href="{% url 'expenses:expense_create' %}" class="btn btn-primary btn-sm">
                <i class="fas fa-plus"></i> Add Expense
            </a>
            <a href="{% url 'expenses:export_expenses' %}?{{ request.GET.urlencode }}" class="btn btn-success btn-sm">
                <i class="fas fa-file-export"></i> Export
            </a>
        </div>
    </div>
    <div class="card-body">
        <form method="get" class="mb-4">
            <div class="row g-3">
                <div class="col-md-3">
                    <label for="category" class="form-label">Category</label>
                    <select name="category" id="category" class="form-select">
                        <option value="">All Categories</option>
                        {% for cat in categories %}
                        <option value="{{ cat.id }}" {% if request.GET.category == cat.id|stringformat:'s' %}selected{% endif %}>
                            {{ cat.name }}
                        </option>
                        {% endfor %}
                    </select>
                </div>
                <div class="col-md-3">
                    <label for="status" class="form-label">Status</label>
                    <select name="status" id="status" class="form-select">
                        <option value="">All Statuses</option>
                        <option value="draft" {% if request.GET.status == 'draft' %}selected{% endif %}>Draft</option>
                        <option value="submitted" {% if request.GET.status == 'submitted' %}selected{% endif %}>Submitted</option>
                        <option value="approved" {% if request.GET.status == 'approved' %}selected{% endif %}>Approved</option>
                        <option value="rejected" {% if request.GET.status == 'rejected' %}selected{% endif %}>Rejected</option>
                        <option value="paid" {% if request.GET.status == 'paid' %}selected{% endif %}>Paid</option>
                    </select>
                </div>
                <div class="col-md-3">
                    <label for="start_date" class="form-label">From Date</label>
                    <input type="date" name="start_date" id="start_date" class="form-control" 
                           value="{{ request.GET.start_date }}">
                </div>
                <div class="col-md-3">
                    <label for="end_date" class="form-label">To Date</label>
                    <input type="date" name="end_date" id="end_date" class="form-control" 
                           value="{{ request.GET.end_date }}">
                </div>
                <div class="col-12">
                    <div class="input-group">
                        <input type="text" name="q" class="form-control" placeholder="Search by reference, description..." 
                               value="{{ request.GET.q }}">
                        <button type="submit" class="btn btn-primary">
                            <i class="fas fa-search"></i> Search
                        </button>
                        <a href="{% url 'expenses:expense_list' %}" class="btn btn-outline-secondary">
                            <i class="fas fa-undo"></i> Reset
                        </a>
                    </div>
                </div>
            </div>
        </form>

        <div class="table-responsive">
            <table class="table table-hover">
                <thead class="table-light">
                    <tr>
                        <th>Reference</th>
                        <th>Date</th>
                        <th>Category</th>
                        <th>Amount</th>
                        <th>Status</th>
                        <th>Submitted By</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    {% for expense in expenses %}
                    <tr>
                        <td>{{ expense.reference }}</td>
                        <td>{{ expense.expense_date|date:"M d, Y" }}</td>
                        <td>{{ expense.category.name|default:"N/A" }}</td>
                        <td><span class="badge bg-success text-white">KSh {{ expense.amount|floatformat:2|intcomma }}</span></td>
                        <td>
                            {% if expense.status == 'approved' %}
                                <span class="badge bg-success">
                            {% elif expense.status == 'rejected' %}
                                <span class="badge bg-danger">
                            {% elif expense.status == 'paid' %}
                                <span class="badge bg-primary">
                            {% elif expense.status == 'draft' %}
                                <span class="badge bg-secondary">
                            {% else %}
                                <span class="badge bg-warning">
                            {% endif %}
                                {{ expense.get_status_display }}
                            </span>
                        </td>
                        <td>{{ expense.created_by.get_full_name|default:expense.created_by.email }}</td>
                        <td>
                            <div class="btn-group btn-group-sm">
                                <a href="{% url 'expenses:expense_detail' expense.id %}" 
                                   class="btn btn-sm btn-outline-primary" title="View">
                                    <i class="fas fa-eye"></i>
                                </a>
                                {% if expense.can_edit %}
                                <a href="{% url 'expenses:expense_edit' expense.id %}" 
                                   class="btn btn-sm btn-outline-secondary" title="Edit">
                                    <i class="fas fa-edit"></i>
                                </a>
                                {% endif %}
                                {% if expense.can_delete %}
                                <a href="{% url 'expenses:expense_delete' expense.id %}" 
                                   class="btn btn-sm btn-outline-danger" title="Delete">
                                    <i class="fas fa-trash"></i>
                                </a>
                                {% endif %}
                                {% if expense.can_approve %}
                                <a href="{% url 'expenses:expense_approve' expense.id %}" 
                                   class="btn btn-sm btn-outline-success" title="Approve">
                                    <i class="fas fa-check"></i>
                                </a>
                                {% endif %}
                                {% if expense.can_reject %}
                                <a href="{% url 'expenses:expense_reject' expense.id %}" 
                                   class="btn btn-sm btn-outline-warning" title="Reject">
                                    <i class="fas fa-times"></i>
                                </a>
                                {% endif %}
                                {% if expense.can_pay %}
                                <a href="{% url 'expenses:expense_pay' expense.id %}" 
                                   class="btn btn-sm btn-outline-info" title="Mark as Paid">
                                    <i class="fas fa-money-bill-wave"></i>
                                </a>
                                {% endif %}
                            </div>
                        </td>
                    </tr>
                    {% empty %}
                    <tr>
                        <td colspan="7" class="text-center">No expenses found.</td>
                    </tr>
                    {% endfor %}
                </tbody>
                <tfoot>
                    <tr>
                        <th colspan="3" class="text-end">Total:</th>
                        <th>KSh {{ total_amount|floatformat:2|intcomma }}</th>
                        <th colspan="3"></th>
                    </tr>
                </tfoot>
            </table>
        </div>

        {% if is_paginated %}
        <nav aria-label="Page navigation" class="mt-4">
            <ul class="pagination justify-content-center">
                {% if page_obj.has_previous %}
                <li class="page-item">
                    <a class="page-link" href="?page=1{% for key, value in request.GET.items %}{% if key != 'page' %}&{{ key }}={{ value }}{% endif %}{% endfor %}" 
                       aria-label="First">
                        <span aria-hidden="true">&laquo;&laquo;</span>
                    </a>
                </li>
                <li class="page-item">
                    <a class="page-link" href="?page={{ page_obj.previous_page_number }}{% for key, value in request.GET.items %}{% if key != 'page' %}&{{ key }}={{ value }}{% endif %}{% endfor %}" 
                       aria-label="Previous">
                        <span aria-hidden="true">&laquo;</span>
                    </a>
                </li>
                {% endif %}

                {% for num in page_obj.paginator.page_range %}
                    {% if page_obj.number == num %}
                        <li class="page-item active">
                            <span class="page-link">{{ num }}</span>
                        </li>
                    {% elif num > page_obj.number|add:'-3' and num < page_obj.number|add:'3' %}
                        <li class="page-item">
                            <a class="page-link" href="?page={{ num }}{% for key, value in request.GET.items %}{% if key != 'page' %}&{{ key }}={{ value }}{% endif %}{% endfor %}">
                                {{ num }}
                            </a>
                        </li>
                    {% endif %}
                {% endfor %}

                {% if page_obj.has_next %}
                <li class="page-item">
                    <a class="page-link" href="?page={{ page_obj.next_page_number }}{% for key, value in request.GET.items %}{% if key != 'page' %}&{{ key }}={{ value }}{% endif %}{% endfor %}" 
                       aria-label="Next">
                        <span aria-hidden="true">&raquo;</span>
                    </a>
                </li>
                <li class="page-item">
                    <a class="page-link" href="?page={{ page_obj.paginator.num_pages }}{% for key, value in request.GET.items %}{% if key != 'page' %}&{{ key }}={{ value }}{% endif %}{% endfor %}" 
                       aria-label="Last">
                        <span aria-hidden="true">&raquo;&raquo;</span>
                    </a>
                </li>
                {% endif %}
            </ul>
        </nav>
        {% endif %}
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
document.addEventListener('DOMContentLoaded', function() {
    // Initialize datepickers
    if (typeof flatpickr !== 'undefined') {
        flatpickr("input[type=date]", {
            dateFormat: "Y-m-d",
            allowInput: true
        });
    }
    
    // Auto-submit form on filter change
    const filters = ['#category', '#status', '#start_date', '#end_date'];
    filters.forEach(selector => {
        const element = document.querySelector(selector);
        if (element) {
            element.addEventListener('change', function() {
                this.form.submit();
            });
        }
    });
});
</script>
{% endblock %}