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

{% block title %}Delete Employee - {{ employee.get_full_name }} - {{ block.super }}{% endblock %}

{% block content %}
<div class="container-fluid">
    <!-- Page Header -->
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h1 class="h3 mb-1">
                <i class="fas fa-trash text-danger me-2"></i>Delete Employee
            </h1>
            <nav aria-label="breadcrumb">
                <ol class="breadcrumb mb-0">
                    <li class="breadcrumb-item"><a href="{% url 'hr:dashboard' %}">HR</a></li>
                    <li class="breadcrumb-item"><a href="{% url 'hr:employee_list' %}">Employees</a></li>
                    <li class="breadcrumb-item"><a href="{% url 'hr:employee_detail' employee.pk %}">{{ employee.get_full_name }}</a></li>
                    <li class="breadcrumb-item active">Delete</li>
                </ol>
            </nav>
        </div>
        <div class="btn-group">
            <a href="{% url 'hr:employee_detail' employee.pk %}" class="btn btn-outline-secondary">
                <i class="fas fa-arrow-left me-2"></i>Back to Employee
            </a>
        </div>
    </div>

    <div class="row justify-content-center">
        <div class="col-lg-8">
            <!-- Warning Card -->
            <div class="card border-danger mb-4">
                <div class="card-header bg-danger text-white">
                    <h5 class="mb-0">
                        <i class="fas fa-exclamation-triangle me-2"></i>Confirm Employee Deletion
                    </h5>
                </div>
                <div class="card-body">
                    <div class="alert alert-danger" role="alert">
                        <h6 class="alert-heading">
                            <i class="fas fa-exclamation-triangle me-2"></i>Warning: This action cannot be undone!
                        </h6>
                        <p class="mb-0">
                            You are about to permanently delete the employee record for <strong>{{ employee.get_full_name }}</strong>. 
                            This will remove all associated data and cannot be reversed.
                        </p>
                    </div>

                    <!-- Employee Summary -->
                    <div class="row mb-4">
                        <div class="col-md-6">
                            <h6 class="text-muted mb-3">Employee Information</h6>
                            <dl class="row">
                                <dt class="col-sm-5">Full Name:</dt>
                                <dd class="col-sm-7">{{ employee.get_full_name }}</dd>
                                
                                <dt class="col-sm-5">Employee ID:</dt>
                                <dd class="col-sm-7">
                                    <span class="font-monospace">{{ employee.employee_number }}</span>
                                </dd>
                                
                                <dt class="col-sm-5">Department:</dt>
                                <dd class="col-sm-7">
                                    {% if employee.department %}
                                        {{ employee.department.name }}
                                    {% else %}
                                        <span class="text-muted">Not assigned</span>
                                    {% endif %}
                                </dd>
                                
                                <dt class="col-sm-5">Job Title:</dt>
                                <dd class="col-sm-7">{{ employee.job_title|default:"Not specified" }}</dd>
                                
                                <dt class="col-sm-5">Hire Date:</dt>
                                <dd class="col-sm-7">{{ employee.hire_date|date:"M d, Y" }}</dd>
                                
                                <dt class="col-sm-5">Status:</dt>
                                <dd class="col-sm-7">
                                    <span class="badge bg-{% if employee.employment_status == 'ACTIVE' %}success{% elif employee.employment_status == 'INACTIVE' %}secondary{% elif employee.employment_status == 'TERMINATED' %}danger{% elif employee.employment_status == 'ON_LEAVE' %}warning{% else %}secondary{% endif %}">
                                        {{ employee.get_employment_status_display }}
                                    </span>
                                </dd>
                            </dl>
                        </div>
                        <div class="col-md-6">
                            <h6 class="text-muted mb-3">Impact Assessment</h6>
                            <div class="list-group list-group-flush">
                                <div class="list-group-item d-flex justify-content-between align-items-center px-0">
                                    <span>Performance Reviews</span>
                                    <span class="badge bg-primary rounded-pill">{{ employee.performance_reviews.count }}</span>
                                </div>
                                <div class="list-group-item d-flex justify-content-between align-items-center px-0">
                                    <span>Training Records</span>
                                    <span class="badge bg-info rounded-pill">{{ employee.training_records.count }}</span>
                                </div>
                                <div class="list-group-item d-flex justify-content-between align-items-center px-0">
                                    <span>Time Entries</span>
                                    <span class="badge bg-warning rounded-pill">{{ employee.time_entries.count }}</span>
                                </div>
                                <div class="list-group-item d-flex justify-content-between align-items-center px-0">
                                    <span>Schedule Assignments</span>
                                    <span class="badge bg-success rounded-pill">{{ employee.schedule_assignments.count }}</span>
                                </div>
                                <div class="list-group-item d-flex justify-content-between align-items-center px-0">
                                    <span>Direct Reports</span>
                                    <span class="badge bg-danger rounded-pill">{{ employee.direct_reports.count }}</span>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Data Handling Options -->
                    <div class="card bg-light mb-4">
                        <div class="card-body">
                            <h6 class="card-title">
                                <i class="fas fa-database me-2"></i>Data Handling
                            </h6>
                            <p class="card-text text-muted mb-3">
                                Choose how to handle the employee's associated data:
                            </p>
                            
                            <div class="form-check mb-2">
                                <input class="form-check-input" type="radio" name="data_handling" id="delete_all" value="delete_all" checked>
                                <label class="form-check-label" for="delete_all">
                                    <strong>Delete all associated data</strong>
                                    <br><small class="text-muted">Permanently remove all records (recommended for terminated employees)</small>
                                </label>
                            </div>
                            
                            <div class="form-check mb-2">
                                <input class="form-check-input" type="radio" name="data_handling" id="archive_data" value="archive_data">
                                <label class="form-check-label" for="archive_data">
                                    <strong>Archive associated data</strong>
                                    <br><small class="text-muted">Keep records for compliance but mark as archived</small>
                                </label>
                            </div>
                            
                            <div class="form-check">
                                <input class="form-check-input" type="radio" name="data_handling" id="transfer_data" value="transfer_data">
                                <label class="form-check-label" for="transfer_data">
                                    <strong>Transfer data to another employee</strong>
                                    <br><small class="text-muted">Reassign records to a replacement employee</small>
                                </label>
                            </div>
                            
                            <!-- Transfer Employee Selection (Hidden by default) -->
                            <div id="transfer_employee_section" class="mt-3" style="display: none;">
                                <label for="transfer_employee" class="form-label">Select replacement employee:</label>
                                <select id="transfer_employee" class="form-select">
                                    <option value="">Choose an employee...</option>
                                    {% for emp in available_employees %}
                                    <option value="{{ emp.id }}">{{ emp.get_full_name }} ({{ emp.employee_number }})</option>
                                    {% endfor %}
                                </select>
                            </div>
                        </div>
                    </div>

                    <!-- Restrictions -->
                    {% if deletion_restrictions %}
                    <div class="alert alert-warning" role="alert">
                        <h6 class="alert-heading">
                            <i class="fas fa-exclamation-circle me-2"></i>Deletion Restrictions
                        </h6>
                        <ul class="mb-0">
                            {% for restriction in deletion_restrictions %}
                            <li>{{ restriction }}</li>
                            {% endfor %}
                        </ul>
                        <hr>
                        <p class="mb-0">
                            <strong>Note:</strong> You may need to resolve these issues before deletion can proceed.
                        </p>
                    </div>
                    {% endif %}

                    <!-- Confirmation -->
                    <div class="card border-warning">
                        <div class="card-body">
                            <h6 class="card-title text-warning">
                                <i class="fas fa-shield-alt me-2"></i>Final Confirmation
                            </h6>
                            <div class="form-check mb-3">
                                <input class="form-check-input" type="checkbox" id="confirm_understanding" required>
                                <label class="form-check-label" for="confirm_understanding">
                                    I understand that this action will permanently delete the employee record and cannot be undone.
                                </label>
                            </div>
                            
                            <div class="form-check mb-3">
                                <input class="form-check-input" type="checkbox" id="confirm_backup" required>
                                <label class="form-check-label" for="confirm_backup">
                                    I confirm that any necessary data has been backed up or exported.
                                </label>
                            </div>
                            
                            <div class="form-check">
                                <input class="form-check-input" type="checkbox" id="confirm_authority" required>
                                <label class="form-check-label" for="confirm_authority">
                                    I have the authority to delete this employee record.
                                </label>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Action Buttons -->
            <div class="card">
                <div class="card-body">
                    <form method="post" id="delete_form">
                        {% csrf_token %}
                        <input type="hidden" name="data_handling" id="selected_data_handling" value="delete_all">
                        <input type="hidden" name="transfer_employee_id" id="selected_transfer_employee">
                        
                        <div class="d-flex justify-content-between">
                            <div>
                                <a href="{% url 'hr:employee_detail' employee.pk %}" class="btn btn-outline-secondary">
                                    <i class="fas fa-arrow-left me-2"></i>Cancel
                                </a>
                                <a href="{% url 'hr:employee_list' %}" class="btn btn-outline-secondary">
                                    <i class="fas fa-list me-2"></i>Back to List
                                </a>
                            </div>
                            <div>
                                <button type="button" class="btn btn-outline-info me-2" onclick="exportEmployeeData()">
                                    <i class="fas fa-download me-2"></i>Export Data First
                                </button>
                                <button type="submit" class="btn btn-danger" id="delete_button" disabled>
                                    <i class="fas fa-trash me-2"></i>Delete Employee
                                </button>
                            </div>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>

<script>
document.addEventListener('DOMContentLoaded', function() {
    // Handle data handling radio buttons
    const dataHandlingRadios = document.querySelectorAll('input[name="data_handling"]');
    const transferSection = document.getElementById('transfer_employee_section');
    const selectedDataHandling = document.getElementById('selected_data_handling');
    const selectedTransferEmployee = document.getElementById('selected_transfer_employee');
    
    dataHandlingRadios.forEach(radio => {
        radio.addEventListener('change', function() {
            selectedDataHandling.value = this.value;
            
            if (this.value === 'transfer_data') {
                transferSection.style.display = 'block';
            } else {
                transferSection.style.display = 'none';
                selectedTransferEmployee.value = '';
            }
        });
    });
    
    // Handle transfer employee selection
    const transferEmployeeSelect = document.getElementById('transfer_employee');
    if (transferEmployeeSelect) {
        transferEmployeeSelect.addEventListener('change', function() {
            selectedTransferEmployee.value = this.value;
        });
    }
    
    // Handle confirmation checkboxes
    const confirmCheckboxes = document.querySelectorAll('input[type="checkbox"][required]');
    const deleteButton = document.getElementById('delete_button');
    
    function updateDeleteButton() {
        const allChecked = Array.from(confirmCheckboxes).every(checkbox => checkbox.checked);
        deleteButton.disabled = !allChecked;
    }
    
    confirmCheckboxes.forEach(checkbox => {
        checkbox.addEventListener('change', updateDeleteButton);
    });
    
    // Handle form submission
    const deleteForm = document.getElementById('delete_form');
    deleteForm.addEventListener('submit', function(e) {
        e.preventDefault();
        
        const dataHandling = selectedDataHandling.value;
        let confirmMessage = `Are you sure you want to delete ${employee.get_full_name}?`;
        
        if (dataHandling === 'delete_all') {
            confirmMessage += '\n\nThis will permanently delete all associated data.';
        } else if (dataHandling === 'archive_data') {
            confirmMessage += '\n\nAssociated data will be archived.';
        } else if (dataHandling === 'transfer_data') {
            const transferEmployee = transferEmployeeSelect.options[transferEmployeeSelect.selectedIndex].text;
            confirmMessage += `\n\nAssociated data will be transferred to: ${transferEmployee}`;
        }
        
        if (confirm(confirmMessage)) {
            // Show loading state
            deleteButton.innerHTML = '<i class="fas fa-spinner fa-spin me-2"></i>Deleting...';
            deleteButton.disabled = true;
            
            // Submit the form
            this.submit();
        }
    });
});

function exportEmployeeData() {
    // Implementation would export employee data
    const employeeId = {{ employee.pk }};
    window.open(`{% url 'hr:employee_list' %}export/?ids=${employeeId}`, '_blank');
}

// Prevent accidental navigation
window.addEventListener('beforeunload', function(e) {
    const confirmCheckboxes = document.querySelectorAll('input[type="checkbox"][required]');
    const anyChecked = Array.from(confirmCheckboxes).some(checkbox => checkbox.checked);
    
    if (anyChecked) {
        e.preventDefault();
        e.returnValue = '';
    }
});
</script>

<style>
.font-monospace {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.list-group-item {
    border: none;
    padding: 0.5rem 0;
}

.form-check-label {
    cursor: pointer;
}

.form-check-input:checked {
    background-color: #dc3545;
    border-color: #dc3545;
}

.alert-heading {
    margin-bottom: 0.5rem;
}

dl.row dt {
    font-weight: 600;
    color: #495057;
}

dl.row dd {
    color: #6c757d;
}

.card.border-danger {
    border-color: #dc3545 !important;
}

.card.border-warning {
    border-color: #ffc107 !important;
}

@media (max-width: 768px) {
    .d-flex.justify-content-between {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-group {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
}
</style>
{% endblock %}