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

{% block title %}Cancel Appointment{% endblock %}

{% block content %}
<div id="content" class="app-content">
    <div class="container">
        <div class="row justify-content-center">
            <div class="col-xl-8">
                <ul class="breadcrumb">
                    <li class="breadcrumb-item"><a href="{% url 'core:dashboard' %}">Dashboard</a></li>
                    <li class="breadcrumb-item"><a href="{% url 'appointments:appointment_list' %}">Appointments</a></li>
                    <li class="breadcrumb-item"><a href="{% url 'appointments:appointment_detail' appointment.id %}">{{ appointment.patient.first_name }} {{ appointment.patient.last_name }}</a></li>
                    <li class="breadcrumb-item active">Cancel</li>
                </ul>
                
                <h1 class="page-header">Cancel Appointment</h1>
                
                <!-- Appointment Info -->
                <div class="card mb-4">
                    <div class="card-header">
                        <h4 class="card-title">Appointment Details</h4>
                    </div>
                    <div class="card-body">
                        <div class="row">
                            <div class="col-md-6">
                                <div class="row mb-2">
                                    <div class="col-4"><strong>Patient:</strong></div>
                                    <div class="col-8">{{ appointment.patient.first_name }} {{ appointment.patient.last_name }}</div>
                                </div>
                                <div class="row mb-2">
                                    <div class="col-4"><strong>Patient ID:</strong></div>
                                    <div class="col-8">{{ appointment.patient.patient_id }}</div>
                                </div>
                                <div class="row mb-2">
                                    <div class="col-4"><strong>Provider:</strong></div>
                                    <div class="col-8">{{ appointment.provider.first_name }} {{ appointment.provider.last_name }}</div>
                                </div>
                                <div class="row mb-2">
                                    <div class="col-4"><strong>Department:</strong></div>
                                    <div class="col-8">{{ appointment.department.name }}</div>
                                </div>
                            </div>
                            <div class="col-md-6">
                                <div class="row mb-2">
                                    <div class="col-4"><strong>Date:</strong></div>
                                    <div class="col-8">{{ appointment.appointment_date|date:"M d, Y" }}</div>
                                </div>
                                <div class="row mb-2">
                                    <div class="col-4"><strong>Time:</strong></div>
                                    <div class="col-8">{{ appointment.appointment_time|time:"g:i A" }}</div>
                                </div>
                                <div class="row mb-2">
                                    <div class="col-4"><strong>Type:</strong></div>
                                    <div class="col-8">{{ appointment.appointment_type.name }}</div>
                                </div>
                                <div class="row mb-2">
                                    <div class="col-4"><strong>Status:</strong></div>
                                    <div class="col-8">
                                        {% if appointment.status == 'scheduled' %}
                                            <span class="badge bg-info">Scheduled</span>
                                        {% elif appointment.status == 'confirmed' %}
                                            <span class="badge bg-success">Confirmed</span>
                                        {% elif appointment.status == 'checked_in' %}
                                            <span class="badge bg-primary">Checked In</span>
                                        {% endif %}
                                    </div>
                                </div>
                            </div>
                        </div>
                        
                        {% if appointment.notes %}
                        <div class="row mt-3">
                            <div class="col-12">
                                <strong>Current Notes:</strong>
                                <p class="mt-2">{{ appointment.notes }}</p>
                            </div>
                        </div>
                        {% endif %}
                    </div>
                </div>
                
                <!-- Cancellation Form -->
                <div class="card">
                    <div class="card-header">
                        <h4 class="card-title">Cancellation Details</h4>
                    </div>
                    <div class="card-body">
                        {% if messages %}
                            {% for message in messages %}
                                <div class="alert alert-{{ message.tags }} alert-dismissible fade show" role="alert">
                                    {{ message }}
                                    <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
                                </div>
                            {% endfor %}
                        {% endif %}
                        
                        <div class="alert alert-warning">
                            <i class="fa fa-exclamation-triangle me-2"></i>
                            <strong>Warning:</strong> This action will permanently cancel the appointment. This cannot be undone.
                        </div>
                        
                        <form method="post" class="form-horizontal">
                            {% csrf_token %}
                            
                            <div class="row mb-3">
                                <label class="col-form-label col-md-3">Cancellation Reason <span class="text-danger">*</span></label>
                                <div class="col-md-9">
                                    <select name="cancellation_reason" class="form-select" required>
                                        <option value="">Select Reason</option>
                                        <option value="patient_request" {% if form.cancellation_reason.value == 'patient_request' %}selected{% endif %}>Patient Request</option>
                                        <option value="patient_illness" {% if form.cancellation_reason.value == 'patient_illness' %}selected{% endif %}>Patient Illness</option>
                                        <option value="provider_unavailable" {% if form.cancellation_reason.value == 'provider_unavailable' %}selected{% endif %}>Provider Unavailable</option>
                                        <option value="emergency" {% if form.cancellation_reason.value == 'emergency' %}selected{% endif %}>Emergency</option>
                                        <option value="equipment_failure" {% if form.cancellation_reason.value == 'equipment_failure' %}selected{% endif %}>Equipment Failure</option>
                                        <option value="weather" {% if form.cancellation_reason.value == 'weather' %}selected{% endif %}>Weather Conditions</option>
                                        <option value="scheduling_error" {% if form.cancellation_reason.value == 'scheduling_error' %}selected{% endif %}>Scheduling Error</option>
                                        <option value="insurance_issue" {% if form.cancellation_reason.value == 'insurance_issue' %}selected{% endif %}>Insurance Issue</option>
                                        <option value="other" {% if form.cancellation_reason.value == 'other' %}selected{% endif %}>Other</option>
                                    </select>
                                    {% if form.cancellation_reason.errors %}
                                        <div class="text-danger">{{ form.cancellation_reason.errors.0 }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <label class="col-form-label col-md-3">Cancellation Notes</label>
                                <div class="col-md-9">
                                    <textarea name="cancellation_notes" class="form-control" rows="4" 
                                              placeholder="Additional details about the cancellation">{{ form.cancellation_notes.value|default:'' }}</textarea>
                                    {% if form.cancellation_notes.errors %}
                                        <div class="text-danger">{{ form.cancellation_notes.errors.0 }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <label class="col-form-label col-md-3">Cancellation Fee</label>
                                <div class="col-md-9">
                                    <div class="input-group">
                                        <span class="input-group-text">$</span>
                                        <input type="number" name="cancellation_fee" class="form-control" 
                                               step="0.01" min="0" value="{{ form.cancellation_fee.value|default:'0.00' }}">
                                    </div>
                                    <small class="form-text text-muted">Enter cancellation fee if applicable</small>
                                    {% if form.cancellation_fee.errors %}
                                        <div class="text-danger">{{ form.cancellation_fee.errors.0 }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <div class="col-md-9 offset-md-3">
                                    <div class="form-check mb-2">
                                        <input class="form-check-input" type="checkbox" name="notify_patient" id="notify_patient" 
                                               {% if form.notify_patient.value %}checked{% endif %}>
                                        <label class="form-check-label" for="notify_patient">
                                            Send cancellation notification to patient
                                        </label>
                                    </div>
                                    <div class="form-check mb-2">
                                        <input class="form-check-input" type="checkbox" name="offer_reschedule" id="offer_reschedule" 
                                               {% if form.offer_reschedule.value %}checked{% endif %}>
                                        <label class="form-check-label" for="offer_reschedule">
                                            Offer rescheduling options to patient
                                        </label>
                                    </div>
                                    <div class="form-check">
                                        <input class="form-check-input" type="checkbox" name="add_to_waitlist" id="add_to_waitlist" 
                                               {% if form.add_to_waitlist.value %}checked{% endif %}>
                                        <label class="form-check-label" for="add_to_waitlist">
                                            Add patient to waitlist for earlier appointments
                                        </label>
                                    </div>
                                </div>
                            </div>
                            
                            <div class="row">
                                <div class="col-md-9 offset-md-3">
                                    <button type="submit" class="btn btn-danger" onclick="return confirm('Are you sure you want to cancel this appointment? This action cannot be undone.')">
                                        <i class="fa fa-times me-2"></i>Cancel Appointment
                                    </button>
                                    <a href="{% url 'appointments:appointment_detail' appointment.id %}" class="btn btn-secondary ms-2">
                                        <i class="fa fa-arrow-left me-2"></i>Go Back
                                    </a>
                                </div>
                            </div>
                        </form>
                    </div>
                </div>
                
                <!-- Cancellation Policy -->
                <div class="card mt-4">
                    <div class="card-header">
                        <h4 class="card-title">Cancellation Policy</h4>
                    </div>
                    <div class="card-body">
                        <ul class="mb-0">
                            <li>Appointments cancelled with less than 24 hours notice may incur a cancellation fee</li>
                            <li>Emergency cancellations are exempt from cancellation fees</li>
                            <li>Patients will be notified of the cancellation via their preferred communication method</li>
                            <li>Cancelled appointments will be made available to other patients on the waitlist</li>
                            <li>Refunds for prepaid appointments will be processed according to the refund policy</li>
                        </ul>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block js %}
<script>
$(document).ready(function() {
    // Calculate cancellation fee based on notice period
    var appointmentDate = new Date('{{ appointment.appointment_date|date:"Y-m-d" }} {{ appointment.appointment_time }}');
    var now = new Date();
    var hoursNotice = (appointmentDate - now) / (1000 * 60 * 60);
    
    // Auto-set cancellation fee based on policy
    if (hoursNotice < 24 && hoursNotice > 0) {
        var reason = $('select[name="cancellation_reason"]').val();
        if (reason !== 'emergency' && reason !== 'provider_unavailable') {
            $('input[name="cancellation_fee"]').val('25.00');
        }
    }
    
    // Update cancellation fee when reason changes
    $('select[name="cancellation_reason"]').change(function() {
        var reason = $(this).val();
        if (reason === 'emergency' || reason === 'provider_unavailable') {
            $('input[name="cancellation_fee"]').val('0.00');
        } else if (hoursNotice < 24 && hoursNotice > 0) {
            $('input[name="cancellation_fee"]').val('25.00');
        }
    });
});
</script>
{% endblock %}