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

{% block title %}Reschedule Appointment{% endblock %}

{% block css %}
<link href="{% static 'assets/plugins/bootstrap-datepicker/dist/css/bootstrap-datepicker.min.css' %}" rel="stylesheet" />
{% 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">Reschedule</li>
                </ul>
                
                <h1 class="page-header">Reschedule Appointment</h1>
                
                <!-- Current Appointment Info -->
                <div class="card mb-4">
                    <div class="card-header">
                        <h4 class="card-title">Current Appointment</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>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>
                        </div>
                    </div>
                </div>
                
                <!-- Reschedule Form -->
                <div class="card">
                    <div class="card-header">
                        <h4 class="card-title">New Appointment 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 %}
                        
                        <form method="post" class="form-horizontal">
                            {% csrf_token %}
                            
                            <div class="row mb-3">
                                <label class="col-form-label col-md-3">New Date <span class="text-danger">*</span></label>
                                <div class="col-md-9">
                                    <input type="date" name="new_date" class="form-control" required 
                                           min="{{ today|date:'Y-m-d' }}" value="{{ form.new_date.value|default:'' }}">
                                    {% if form.new_date.errors %}
                                        <div class="text-danger">{{ form.new_date.errors.0 }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <label class="col-form-label col-md-3">New Time <span class="text-danger">*</span></label>
                                <div class="col-md-9">
                                    <input type="time" name="new_time" class="form-control" required 
                                           value="{{ form.new_time.value|default:'' }}">
                                    {% if form.new_time.errors %}
                                        <div class="text-danger">{{ form.new_time.errors.0 }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <label class="col-form-label col-md-3">Provider</label>
                                <div class="col-md-9">
                                    <select name="new_provider" class="form-select">
                                        <option value="">Keep Current Provider</option>
                                        {% for provider in providers %}
                                            <option value="{{ provider.id }}" 
                                                    {% if form.new_provider.value == provider.id|stringformat:"s" %}selected{% endif %}>
                                                {{ provider.first_name }} {{ provider.last_name }} - {{ provider.department.name }}
                                            </option>
                                        {% endfor %}
                                    </select>
                                    {% if form.new_provider.errors %}
                                        <div class="text-danger">{{ form.new_provider.errors.0 }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <label class="col-form-label col-md-3">Reason for Rescheduling <span class="text-danger">*</span></label>
                                <div class="col-md-9">
                                    <select name="reschedule_reason" class="form-select" required>
                                        <option value="">Select Reason</option>
                                        <option value="patient_request" {% if form.reschedule_reason.value == 'patient_request' %}selected{% endif %}>Patient Request</option>
                                        <option value="provider_unavailable" {% if form.reschedule_reason.value == 'provider_unavailable' %}selected{% endif %}>Provider Unavailable</option>
                                        <option value="emergency" {% if form.reschedule_reason.value == 'emergency' %}selected{% endif %}>Emergency</option>
                                        <option value="equipment_issue" {% if form.reschedule_reason.value == 'equipment_issue' %}selected{% endif %}>Equipment Issue</option>
                                        <option value="weather" {% if form.reschedule_reason.value == 'weather' %}selected{% endif %}>Weather</option>
                                        <option value="other" {% if form.reschedule_reason.value == 'other' %}selected{% endif %}>Other</option>
                                    </select>
                                    {% if form.reschedule_reason.errors %}
                                        <div class="text-danger">{{ form.reschedule_reason.errors.0 }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <label class="col-form-label col-md-3">Notes</label>
                                <div class="col-md-9">
                                    <textarea name="reschedule_notes" class="form-control" rows="3" 
                                              placeholder="Additional notes about the rescheduling">{{ form.reschedule_notes.value|default:'' }}</textarea>
                                    {% if form.reschedule_notes.errors %}
                                        <div class="text-danger">{{ form.reschedule_notes.errors.0 }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <div class="row mb-3">
                                <div class="col-md-9 offset-md-3">
                                    <div class="form-check">
                                        <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 notification to patient about the rescheduled appointment
                                        </label>
                                    </div>
                                </div>
                            </div>
                            
                            <div class="row">
                                <div class="col-md-9 offset-md-3">
                                    <button type="submit" class="btn btn-primary">
                                        <i class="fa fa-calendar me-2"></i>Reschedule Appointment
                                    </button>
                                    <a href="{% url 'appointments:appointment_detail' appointment.id %}" class="btn btn-secondary ms-2">Cancel</a>
                                </div>
                            </div>
                        </form>
                    </div>
                </div>
                
                <!-- Available Time Slots -->
                <div class="card mt-4" id="availableSlotsCard" style="display: none;">
                    <div class="card-header">
                        <h4 class="card-title">Available Time Slots</h4>
                    </div>
                    <div class="card-body">
                        <div id="availableSlots">
                            <!-- Time slots will be loaded here -->
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block js %}
<script src="{% static 'assets/plugins/bootstrap-datepicker/dist/js/bootstrap-datepicker.min.js' %}"></script>
<script>
$(document).ready(function() {
    // Initialize date picker
    $('input[type="date"]').datepicker({
        format: 'yyyy-mm-dd',
        startDate: 'today',
        autoclose: true
    });
    
    // Load available slots when date or provider changes
    $('input[name="new_date"], select[name="new_provider"]').change(function() {
        loadAvailableSlots();
    });
});

function loadAvailableSlots() {
    var date = $('input[name="new_date"]').val();
    var provider = $('select[name="new_provider"]').val() || '{{ appointment.provider.id }}';
    
    if (!date) return;
    
    $.ajax({
        url: '{% url "appointments:get_available_slots" %}',
        data: {
            'date': date,
            'provider': provider,
            'exclude_appointment': '{{ appointment.id }}'
        },
        success: function(data) {
            var slotsHtml = '';
            if (data.slots && data.slots.length > 0) {
                slotsHtml += '<div class="row">';
                data.slots.forEach(function(slot, index) {
                    if (index % 4 === 0 && index > 0) {
                        slotsHtml += '</div><div class="row mt-2">';
                    }
                    slotsHtml += '<div class="col-md-3">';
                    slotsHtml += '<button type="button" class="btn btn-outline-primary btn-sm w-100 time-slot" data-time="' + slot + '">';
                    slotsHtml += slot;
                    slotsHtml += '</button>';
                    slotsHtml += '</div>';
                });
                slotsHtml += '</div>';
                
                $('#availableSlots').html(slotsHtml);
                $('#availableSlotsCard').show();
                
                // Add click handler for time slots
                $('.time-slot').click(function() {
                    var time = $(this).data('time');
                    $('input[name="new_time"]').val(time);
                    $('.time-slot').removeClass('btn-primary').addClass('btn-outline-primary');
                    $(this).removeClass('btn-outline-primary').addClass('btn-primary');
                });
            } else {
                $('#availableSlots').html('<p class="text-muted text-center">No available slots for this date</p>');
                $('#availableSlotsCard').show();
            }
        },
        error: function() {
            $('#availableSlots').html('<p class="text-danger text-center">Error loading available slots</p>');
            $('#availableSlotsCard').show();
        }
    });
}
</script>
{% endblock %}