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

{% block title %}Delete Quality Indicator - {{ 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 Quality Indicator
            </h1>
            <nav aria-label="breadcrumb">
                <ol class="breadcrumb mb-0">
                    <li class="breadcrumb-item"><a href="{% url 'core:dashboard' %}">Dashboard</a></li>
                    <li class="breadcrumb-item"><a href="{% url 'quality:dashboard' %}">Quality</a></li>
                    <li class="breadcrumb-item"><a href="{% url 'quality:quality_indicator_list' %}">Indicators</a></li>
                    <li class="breadcrumb-item"><a href="{% url 'quality:quality_indicator_detail' object.pk %}">{{ object.name|truncatechars:20 }}</a></li>
                    <li class="breadcrumb-item active">Delete</li>
                </ol>
            </nav>
        </div>
        <div class="btn-group">
            <a href="{% url 'quality:quality_indicator_detail' object.pk %}" class="btn btn-outline-secondary">
                <i class="fas fa-arrow-left me-2"></i>Back to Indicator
            </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 Deletion
                    </h5>
                </div>
                <div class="card-body">
                    <div class="alert alert-danger d-flex align-items-center" role="alert">
                        <i class="fas fa-exclamation-triangle fa-2x me-3"></i>
                        <div>
                            <h6 class="alert-heading mb-1">Warning: This action cannot be undone!</h6>
                            <p class="mb-0">You are about to permanently delete this quality indicator and all associated data.</p>
                        </div>
                    </div>

                    <!-- Indicator Information -->
                    <div class="row mb-4">
                        <div class="col-12">
                            <h6 class="text-muted mb-3">Indicator to be deleted:</h6>
                            <div class="bg-light p-3 rounded">
                                <div class="row">
                                    <div class="col-md-8">
                                        <h5 class="mb-2">{{ object.name }}</h5>
                                        <p class="text-muted mb-2">{{ object.description|truncatechars:150 }}</p>
                                        <div class="d-flex gap-2">
                                            <span class="badge bg-primary">{{ object.get_category_display }}</span>
                                            <span class="badge bg-info">{{ object.get_type_display }}</span>
                                            {% if object.regulatory_requirement %}
                                                <span class="badge bg-warning text-dark">Regulatory</span>
                                            {% endif %}
                                        </div>
                                    </div>
                                    <div class="col-md-4">
                                        <div class="text-end">
                                            <div class="mb-2">
                                                <small class="text-muted">Created:</small><br>
                                                <strong>{{ object.created_at|date:"M d, Y" }}</strong>
                                            </div>
                                            <div>
                                                <small class="text-muted">Measurements:</small><br>
                                                <strong>{{ object.measurements.count }}</strong>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Impact Assessment -->
                    <div class="row mb-4">
                        <div class="col-12">
                            <h6 class="text-muted mb-3">Impact Assessment:</h6>
                            <div class="row g-3">
                                <div class="col-md-4">
                                    <div class="card border-warning">
                                        <div class="card-body text-center">
                                            <i class="fas fa-chart-bar fa-2x text-warning mb-2"></i>
                                            <h4 class="text-warning mb-1">{{ object.measurements.count }}</h4>
                                            <small class="text-muted">Measurements will be deleted</small>
                                        </div>
                                    </div>
                                </div>
                                <div class="col-md-4">
                                    <div class="card border-info">
                                        <div class="card-body text-center">
                                            <i class="fas fa-history fa-2x text-info mb-2"></i>
                                            <h4 class="text-info mb-1">{{ object.measurements.count }}</h4>
                                            <small class="text-muted">Historical data will be lost</small>
                                        </div>
                                    </div>
                                </div>
                                <div class="col-md-4">
                                    <div class="card border-danger">
                                        <div class="card-body text-center">
                                            <i class="fas fa-exclamation-triangle fa-2x text-danger mb-2"></i>
                                            <h4 class="text-danger mb-1">
                                                {% if object.regulatory_requirement %}YES{% else %}NO{% endif %}
                                            </h4>
                                            <small class="text-muted">Regulatory requirement</small>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Restrictions -->
                    {% if object.measurements.count > 0 or object.regulatory_requirement %}
                    <div class="alert alert-warning" role="alert">
                        <h6 class="alert-heading">
                            <i class="fas fa-shield-alt me-2"></i>Deletion Restrictions
                        </h6>
                        <ul class="mb-0">
                            {% if object.measurements.count > 0 %}
                            <li>This indicator has <strong>{{ object.measurements.count }} measurement(s)</strong> that will be permanently deleted</li>
                            {% endif %}
                            {% if object.regulatory_requirement %}
                            <li>This is a <strong>regulatory requirement</strong> - deletion may affect compliance</li>
                            {% endif %}
                        </ul>
                    </div>
                    {% endif %}

                    <!-- Alternative Actions -->
                    <div class="row mb-4">
                        <div class="col-12">
                            <h6 class="text-muted mb-3">Alternative Actions:</h6>
                            <div class="row g-3">
                                <div class="col-md-6">
                                    <div class="card border-success">
                                        <div class="card-body">
                                            <h6 class="card-title text-success">
                                                <i class="fas fa-pause-circle me-2"></i>Deactivate Instead
                                            </h6>
                                            <p class="card-text small">Keep the indicator and its data but mark it as inactive. This preserves historical data while stopping new measurements.</p>
                                            <button type="button" class="btn btn-outline-success btn-sm" onclick="deactivateIndicator()">
                                                <i class="fas fa-pause me-2"></i>Deactivate Indicator
                                            </button>
                                        </div>
                                    </div>
                                </div>
                                <div class="col-md-6">
                                    <div class="card border-info">
                                        <div class="card-body">
                                            <h6 class="card-title text-info">
                                                <i class="fas fa-archive me-2"></i>Archive Data
                                            </h6>
                                            <p class="card-text small">Export all measurement data before deletion to maintain historical records for compliance or analysis.</p>
                                            <button type="button" class="btn btn-outline-info btn-sm" onclick="exportData()">
                                                <i class="fas fa-download me-2"></i>Export Data First
                                            </button>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Confirmation Form -->
                    <form method="post" id="deleteForm">
                        {% csrf_token %}
                        
                        <!-- Confirmation Checkbox -->
                        <div class="form-check mb-3">
                            <input class="form-check-input" type="checkbox" id="confirmDeletion" required>
                            <label class="form-check-label" for="confirmDeletion">
                                I understand that this action will permanently delete the quality indicator 
                                "<strong>{{ object.name }}</strong>" and all {{ object.measurements.count }} associated measurement(s).
                            </label>
                        </div>

                        {% if object.regulatory_requirement %}
                        <div class="form-check mb-3">
                            <input class="form-check-input" type="checkbox" id="confirmRegulatory" required>
                            <label class="form-check-label" for="confirmRegulatory">
                                I acknowledge that this is a regulatory requirement and deletion may affect compliance.
                            </label>
                        </div>
                        {% endif %}

                        <!-- Reason for Deletion -->
                        <div class="mb-3">
                            <label for="deletionReason" class="form-label">Reason for Deletion *</label>
                            <textarea class="form-control" id="deletionReason" name="deletion_reason" rows="3" 
                                      placeholder="Please provide a reason for deleting this quality indicator..." required></textarea>
                            <div class="form-text">This reason will be logged for audit purposes.</div>
                        </div>

                        <!-- Form Actions -->
                        <div class="d-flex justify-content-between">
                            <a href="{% url 'quality:quality_indicator_detail' object.pk %}" class="btn btn-outline-secondary">
                                <i class="fas fa-times me-2"></i>Cancel
                            </a>
                            <button type="submit" class="btn btn-danger" id="deleteButton" disabled>
                                <i class="fas fa-trash me-2"></i>Delete Quality Indicator
                            </button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>

<script>
// Form validation and confirmation
document.addEventListener('DOMContentLoaded', function() {
    const confirmDeletion = document.getElementById('confirmDeletion');
    const confirmRegulatory = document.getElementById('confirmRegulatory');
    const deletionReason = document.getElementById('deletionReason');
    const deleteButton = document.getElementById('deleteButton');
    const deleteForm = document.getElementById('deleteForm');
    
    function validateForm() {
        const isConfirmed = confirmDeletion.checked;
        const isRegulatoryConfirmed = !confirmRegulatory || confirmRegulatory.checked;
        const hasReason = deletionReason.value.trim().length > 0;
        
        deleteButton.disabled = !(isConfirmed && isRegulatoryConfirmed && hasReason);
    }
    
    // Add event listeners
    confirmDeletion.addEventListener('change', validateForm);
    if (confirmRegulatory) {
        confirmRegulatory.addEventListener('change', validateForm);
    }
    deletionReason.addEventListener('input', validateForm);
    
    // Form submission confirmation
    deleteForm.addEventListener('submit', function(e) {
        if (!confirm('Are you absolutely sure you want to delete this quality indicator? This action cannot be undone.')) {
            e.preventDefault();
        }
    });
});

// Deactivate indicator instead of deleting
function deactivateIndicator() {
    if (confirm('Deactivate this quality indicator instead of deleting it?')) {
        fetch(`/quality/indicators/{{ object.pk }}/deactivate/`, {
            method: 'POST',
            headers: {
                'X-CSRFToken': document.querySelector('[name=csrfmiddlewaretoken]').value,
                'Content-Type': 'application/json',
            },
        })
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                window.location.href = '{% url "quality:quality_indicator_detail" object.pk %}';
            } else {
                alert('Error deactivating indicator: ' + data.error);
            }
        });
    }
}

// Export data before deletion
function exportData() {
    window.location.href = `/quality/indicators/{{ object.pk }}/export/`;
}
</script>

<style>
.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border: 1px solid rgba(0, 0, 0, 0.125);
}

.card-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}

.btn {
    border-radius: 0.375rem;
    transition: all 0.15s ease-in-out;
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-check-input:checked {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.alert {
    border-radius: 0.375rem;
}

.badge {
    font-size: 0.75rem;
}

.card-body .card {
    transition: transform 0.15s ease-in-out;
}

.card-body .card:hover {
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .d-flex.justify-content-between {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-group {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .row.g-3 {
        gap: 1rem !important;
    }
}
</style>
{% endblock %}