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

{% block title %}Delete {{ object.name }} - Analytics Metrics{% endblock %}

{% block content %}
<!-- BEGIN breadcrumb -->
<ol class="breadcrumb float-xl-end">
    <li class="breadcrumb-item"><a href="{% url 'core:dashboard' %}">Dashboard</a></li>
    <li class="breadcrumb-item"><a href="{% url 'analytics:dashboard' %}">Analytics</a></li>
    <li class="breadcrumb-item"><a href="{% url 'analytics:metric_list' %}">Metrics</a></li>
    <li class="breadcrumb-item active">Delete Confirmation</li>
</ol>
<!-- END breadcrumb -->

<!-- BEGIN page-header -->
<h1 class="page-header">
    Delete Metric
    <small>Confirmation Required</small>
</h1>
<!-- END page-header -->

<div class="row justify-content-center">
    <div class="col-xl-8">
        <!-- BEGIN panel -->
        <div class="panel panel-inverse">
            <div class="panel-heading">
                <h4 class="panel-title">
                    <i class="fa fa-exclamation-triangle text-warning me-2"></i>
                    Confirm Metric Deletion
                </h4>
            </div>
            <div class="panel-body">
                <!-- Warning Alert -->
                <div class="alert alert-warning d-flex align-items-center mb-4">
                    <i class="fa fa-exclamation-triangle fa-2x me-3"></i>
                    <div>
                        <h6 class="alert-heading mb-1">Warning: Permanent Deletion</h6>
                        <p class="mb-0">You are about to permanently delete an analytics metric. This action cannot be undone and will affect all historical data and dashboard displays.</p>
                    </div>
                </div>

                <!-- Metric Information -->
                <div class="row mb-4">
                    <div class="col-md-6">
                        <h6 class="mb-3">Metric Details</h6>
                        <table class="table table-borderless">
                            <tr>
                                <td class="fw-bold" width="140">Name:</td>
                                <td>{{ object.name }}</td>
                            </tr>
                            <tr>
                                <td class="fw-bold">Description:</td>
                                <td>{{ object.description|default:"No description" }}</td>
                            </tr>
                            <tr>
                                <td class="fw-bold">Category:</td>
                                <td>
                                    <span class="badge bg-primary">{{ object.get_category_display }}</span>
                                </td>
                            </tr>
                            <tr>
                                <td class="fw-bold">Current Value:</td>
                                <td>
                                    {% if object.current_value is not None %}
                                        <span class="fw-bold">{{ object.current_value }}{% if object.unit %} {{ object.unit }}{% endif %}</span>
                                    {% else %}
                                        <span class="text-muted">No data</span>
                                    {% endif %}
                                </td>
                            </tr>
                            <tr>
                                <td class="fw-bold">Status:</td>
                                <td>
                                    <span class="badge bg-{% if object.status == 'ACTIVE' %}success{% elif object.status == 'DRAFT' %}warning{% else %}secondary{% endif %}">
                                        {{ object.get_status_display }}
                                    </span>
                                </td>
                            </tr>
                        </table>
                    </div>
                    <div class="col-md-6">
                        <h6 class="mb-3">Metric Statistics</h6>
                        <table class="table table-borderless">
                            <tr>
                                <td class="fw-bold" width="140">Created:</td>
                                <td>{{ object.created_at|date:"M d, Y" }}</td>
                            </tr>
                            <tr>
                                <td class="fw-bold">Created By:</td>
                                <td>{{ object.created_by.get_full_name|default:"System" }}</td>
                            </tr>
                            <tr>
                                <td class="fw-bold">Last Updated:</td>
                                <td>{{ object.last_updated|date:"M d, Y H:i"|default:"Never" }}</td>
                            </tr>
                            <tr>
                                <td class="fw-bold">Update Count:</td>
                                <td>{{ object.update_count }}</td>
                            </tr>
                            <tr>
                                <td class="fw-bold">Frequency:</td>
                                <td>{{ object.get_update_frequency_display }}</td>
                            </tr>
                        </table>
                    </div>
                </div>

                <!-- Impact Assessment -->
                <div class="alert alert-info mb-4">
                    <h6 class="alert-heading">
                        <i class="fa fa-info-circle me-2"></i>Impact Assessment
                    </h6>
                    <ul class="mb-0">
                        <li><strong>Metric Definition:</strong> The metric configuration and calculation query will be permanently deleted</li>
                        <li><strong>Historical Data:</strong> All {{ object.update_count }} historical data points will be removed</li>
                        <li><strong>Dashboard Widgets:</strong> Any dashboard widgets displaying this metric will show no data</li>
                        <li><strong>Reports:</strong> Reports referencing this metric may fail or show incomplete data</li>
                        <li><strong>Alerts:</strong> Any alerts configured for this metric will be deactivated</li>
                        <li><strong>Audit Trail:</strong> Deletion will be logged for compliance purposes</li>
                    </ul>
                </div>

                <!-- Target Information -->
                {% if object.target_value is not None %}
                <div class="alert alert-warning mb-4">
                    <h6 class="alert-heading">
                        <i class="fa fa-target me-2"></i>Target Configuration Warning
                    </h6>
                    <p class="mb-2">This metric has target configuration that will be lost:</p>
                    <ul class="mb-0">
                        <li><strong>Target Value:</strong> {{ object.target_value }}{% if object.unit %} {{ object.unit }}{% endif %}</li>
                        <li><strong>Direction:</strong> {{ object.get_target_direction_display }}</li>
                        {% if object.warning_threshold %}
                        <li><strong>Warning Threshold:</strong> {{ object.warning_threshold }}{% if object.unit %} {{ object.unit }}{% endif %}</li>
                        {% endif %}
                        {% if object.critical_threshold %}
                        <li><strong>Critical Threshold:</strong> {{ object.critical_threshold }}{% if object.unit %} {{ object.unit }}{% endif %}</li>
                        {% endif %}
                    </ul>
                </div>
                {% endif %}

                <!-- Related Data Summary -->
                <div class="row mb-4">
                    <div class="col-md-3">
                        <div class="text-center p-3 border rounded">
                            <div class="fs-24px fw-bold text-primary">{{ object.update_count }}</div>
                            <div class="small text-muted">Data Points</div>
                        </div>
                    </div>
                    <div class="col-md-3">
                        <div class="text-center p-3 border rounded">
                            <div class="fs-24px fw-bold text-info">{{ object.alert_count }}</div>
                            <div class="small text-muted">Active Alerts</div>
                        </div>
                    </div>
                    <div class="col-md-3">
                        <div class="text-center p-3 border rounded">
                            <div class="fs-24px fw-bold text-warning">{{ object.dashboard_count }}</div>
                            <div class="small text-muted">Dashboard Uses</div>
                        </div>
                    </div>
                    <div class="col-md-3">
                        <div class="text-center p-3 border rounded">
                            <div class="fs-24px fw-bold text-secondary">{{ object.report_count }}</div>
                            <div class="small text-muted">Report Uses</div>
                        </div>
                    </div>
                </div>

                <!-- Alternative Actions -->
                <div class="card border-secondary mb-4">
                    <div class="card-header bg-light">
                        <h6 class="card-title mb-0">
                            <i class="fa fa-lightbulb me-2"></i>Alternative Actions
                        </h6>
                    </div>
                    <div class="card-body">
                        <p class="card-text">Consider these alternatives instead of deletion:</p>
                        <div class="row">
                            <div class="col-md-6">
                                <ul class="list-unstyled">
                                    <li class="mb-2">
                                        <i class="fa fa-pause text-warning me-2"></i>
                                        <a href="{% url 'analytics:metric_deactivate' object.pk %}" class="text-decoration-none">
                                            Deactivate the metric
                                        </a>
                                    </li>
                                    <li class="mb-2">
                                        <i class="fa fa-archive text-info me-2"></i>
                                        <a href="{% url 'analytics:metric_archive' object.pk %}" class="text-decoration-none">
                                            Archive the metric
                                        </a>
                                    </li>
                                </ul>
                            </div>
                            <div class="col-md-6">
                                <ul class="list-unstyled">
                                    <li class="mb-2">
                                        <i class="fa fa-edit text-primary me-2"></i>
                                        <a href="{% url 'analytics:metric_update' object.pk %}" class="text-decoration-none">
                                            Edit metric configuration
                                        </a>
                                    </li>
                                    <li class="mb-2">
                                        <i class="fa fa-download text-success me-2"></i>
                                        Export historical data
                                    </li>
                                </ul>
                            </div>
                        </div>
                    </div>
                </div>

                <!-- Active Alerts Warning -->
                {% if object.alert_count > 0 %}
                <div class="alert alert-danger mb-4">
                    <h6 class="alert-heading">
                        <i class="fa fa-bell me-2"></i>Active Alerts Found
                    </h6>
                    <p class="mb-2">This metric has {{ object.alert_count }} active alert(s) that will be affected:</p>
                    <ul class="mb-0">
                        {% for alert in object.alerts.all %}
                        <li>{{ alert.name }} - {{ alert.get_condition_display }}: {{ alert.threshold_value }}</li>
                        {% endfor %}
                    </ul>
                </div>
                {% endif %}

                <!-- Dashboard Usage Warning -->
                {% if object.dashboard_count > 0 %}
                <div class="alert alert-warning mb-4">
                    <h6 class="alert-heading">
                        <i class="fa fa-tachometer-alt me-2"></i>Dashboard Usage Warning
                    </h6>
                    <p class="mb-0">This metric is currently displayed on {{ object.dashboard_count }} dashboard widget(s). Deleting it will cause these widgets to show no data.</p>
                </div>
                {% endif %}

                <!-- Deletion Form -->
                <form method="post" id="delete-form">
                    {% csrf_token %}
                    
                    <div class="card border-danger">
                        <div class="card-header bg-danger text-white">
                            <h6 class="card-title mb-0">
                                <i class="fa fa-trash me-2"></i>Deletion Confirmation
                            </h6>
                        </div>
                        <div class="card-body">
                            <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 metric and cannot be undone
                                </label>
                            </div>
                            
                            <div class="form-check mb-3">
                                <input class="form-check-input" type="checkbox" id="confirm-data-loss" required>
                                <label class="form-check-label" for="confirm-data-loss">
                                    I acknowledge that all {{ object.update_count }} historical data points will be lost
                                </label>
                            </div>
                            
                            {% if object.alert_count > 0 %}
                            <div class="form-check mb-3">
                                <input class="form-check-input" type="checkbox" id="confirm-alerts" required>
                                <label class="form-check-label" for="confirm-alerts">
                                    I understand that {{ object.alert_count }} active alert(s) will be deactivated
                                </label>
                            </div>
                            {% endif %}
                            
                            {% if object.dashboard_count > 0 %}
                            <div class="form-check mb-3">
                                <input class="form-check-input" type="checkbox" id="confirm-dashboards" required>
                                <label class="form-check-label" for="confirm-dashboards">
                                    I acknowledge that {{ object.dashboard_count }} dashboard widget(s) will be affected
                                </label>
                            </div>
                            {% endif %}
                            
                            <div class="mb-3">
                                <label class="form-label">Reason for Deletion <span class="text-danger">*</span></label>
                                <select class="form-select" name="deletion_reason" required>
                                    <option value="">Select reason...</option>
                                    <option value="OBSOLETE">Metric is obsolete</option>
                                    <option value="DUPLICATE">Duplicate metric</option>
                                    <option value="INCORRECT">Incorrect calculation</option>
                                    <option value="REPLACED">Replaced by another metric</option>
                                    <option value="COMPLIANCE">Compliance requirement</option>
                                    <option value="CLEANUP">Data cleanup</option>
                                    <option value="OTHER">Other</option>
                                </select>
                            </div>
                            
                            <div class="mb-3">
                                <label class="form-label">Additional Notes</label>
                                <textarea class="form-control" name="deletion_notes" rows="3" 
                                         placeholder="Provide additional details about why this metric is being deleted..."></textarea>
                            </div>
                            
                            <div class="form-check">
                                <input class="form-check-input" type="checkbox" name="export_data_before_delete" id="export-checkbox">
                                <label class="form-check-label" for="export-checkbox">
                                    Export historical data before deletion
                                </label>
                            </div>
                        </div>
                    </div>

                    <!-- Action Buttons -->
                    <div class="d-flex justify-content-between mt-4">
                        <div>
                            <a href="{% url 'analytics:metric_detail' object.pk %}" class="btn btn-secondary">
                                <i class="fa fa-arrow-left me-2"></i>Cancel
                            </a>
                            <a href="{% url 'analytics:metric_deactivate' object.pk %}" class="btn btn-warning ms-2">
                                <i class="fa fa-pause me-2"></i>Deactivate Instead
                            </a>
                        </div>
                        <button type="submit" class="btn btn-danger" id="delete-btn" disabled>
                            <i class="fa fa-trash me-2"></i>Permanently Delete Metric
                        </button>
                    </div>
                </form>
            </div>
        </div>
        <!-- END panel -->
    </div>
</div>
{% endblock %}

{% block js %}
<script>
$(document).ready(function() {
    // Enable/disable delete button based on checkboxes
    function updateDeleteButton() {
        var allChecked = true;
        $('input[type="checkbox"][required]').each(function() {
            if (!$(this).is(':checked')) {
                allChecked = false;
                return false;
            }
        });
        
        var reasonSelected = $('select[name="deletion_reason"]').val() !== '';
        
        $('#delete-btn').prop('disabled', !(allChecked && reasonSelected));
    }
    
    // Check on checkbox change
    $('input[type="checkbox"], select[name="deletion_reason"]').on('change', updateDeleteButton);
    
    // Form submission confirmation
    $('#delete-form').on('submit', function(e) {
        var confirmText = 'Are you absolutely sure you want to permanently delete "{{ object.name }}"?';
        {% if object.alert_count > 0 %}
        confirmText += '\n\nThis will deactivate {{ object.alert_count }} alert(s)!';
        {% endif %}
        {% if object.dashboard_count > 0 %}
        confirmText += '\n\nThis will affect {{ object.dashboard_count }} dashboard widget(s)!';
        {% endif %}
        confirmText += '\n\nAll {{ object.update_count }} historical data points will be lost!';
        confirmText += '\n\nThis action cannot be undone.';
        
        if (!confirm(confirmText)) {
            e.preventDefault();
        }
    });
    
    // Auto-focus on first checkbox
    $('#confirm-understanding').focus();
});
</script>
{% endblock %}