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

{% block title %}Delete Channel - {{ object.name }}{% endblock %}

{% block content %}
<div class="container-fluid">
    <!-- Breadcrumb -->
    <div class="row">
        <div class="col-12">
            <div class="page-title-box d-sm-flex align-items-center justify-content-between">
                <h4 class="mb-sm-0">Delete Communication Channel</h4>
                <div class="page-title-right">
                    <ol class="breadcrumb m-0">
                        <li class="breadcrumb-item"><a href="{% url 'core:dashboard' %}">Dashboard</a></li>
                        <li class="breadcrumb-item"><a href="{% url 'communications:dashboard' %}">Communications</a></li>
                        <li class="breadcrumb-item"><a href="{% url 'communications:communication_channel_list' %}">Channels</a></li>
                        <li class="breadcrumb-item"><a href="{% url 'communications:communication_channel_detail' object.pk %}">{{ object.name }}</a></li>
                        <li class="breadcrumb-item active">Delete</li>
                    </ol>
                </div>
            </div>
        </div>
    </div>

    <div class="row justify-content-center">
        <div class="col-lg-8">
            <!-- Warning Card -->
            <div class="card border-danger">
                <div class="card-header bg-danger text-white">
                    <div class="d-flex align-items-center">
                        <i class="fas fa-exclamation-triangle fa-2x me-3"></i>
                        <div>
                            <h5 class="card-title mb-0">Confirm Channel Deletion</h5>
                            <small class="opacity-75">This action cannot be undone</small>
                        </div>
                    </div>
                </div>
                <div class="card-body">
                    <!-- Channel Information -->
                    <div class="alert alert-warning" role="alert">
                        <div class="d-flex">
                            <div class="flex-shrink-0">
                                <i class="fas fa-info-circle fa-lg"></i>
                            </div>
                            <div class="flex-grow-1 ms-3">
                                <h6 class="alert-heading">You are about to delete:</h6>
                                <div class="d-flex align-items-center mb-2">
                                    <div class="avatar-sm me-3">
                                        <div class="avatar-title bg-soft-{% if object.channel_type == 'EMAIL' %}primary{% elif object.channel_type == 'SMS' %}success{% elif object.channel_type == 'PUSH' %}warning{% elif object.channel_type == 'WEBHOOK' %}info{% elif object.channel_type == 'SLACK' %}secondary{% else %}dark{% endif %} text-{% if object.channel_type == 'EMAIL' %}primary{% elif object.channel_type == 'SMS' %}success{% elif object.channel_type == 'PUSH' %}warning{% elif object.channel_type == 'WEBHOOK' %}info{% elif object.channel_type == 'SLACK' %}secondary{% else %}dark{% endif %} rounded">
                                            <i class="fas fa-{% if object.channel_type == 'EMAIL' %}envelope{% elif object.channel_type == 'SMS' %}sms{% elif object.channel_type == 'PUSH' %}bell{% elif object.channel_type == 'WEBHOOK' %}link{% elif object.channel_type == 'SLACK' %}slack{% elif object.channel_type == 'TEAMS' %}microsoft{% else %}broadcast-tower{% endif %}"></i>
                                        </div>
                                    </div>
                                    <div>
                                        <h6 class="mb-0">{{ object.name }}</h6>
                                        <small class="text-muted">{{ object.get_channel_type_display }} Channel</small>
                                    </div>
                                </div>
                                {% if object.description %}
                                <p class="mb-0"><strong>Description:</strong> {{ object.description }}</p>
                                {% endif %}
                            </div>
                        </div>
                    </div>

                    <!-- Impact Assessment -->
                    <div class="row mb-4">
                        <div class="col-md-6">
                            <div class="card bg-light">
                                <div class="card-body text-center">
                                    <i class="fas fa-envelope fa-2x text-muted mb-2"></i>
                                    <h4 class="mb-1">{{ object.message_count|default:0 }}</h4>
                                    <p class="text-muted mb-0">Total Messages Sent</p>
                                </div>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="card bg-light">
                                <div class="card-body text-center">
                                    <i class="fas fa-exclamation-triangle fa-2x text-warning mb-2"></i>
                                    <h4 class="mb-1">{{ active_alert_rules|default:0 }}</h4>
                                    <p class="text-muted mb-0">Active Alert Rules</p>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Consequences -->
                    <div class="alert alert-danger" role="alert">
                        <h6 class="alert-heading">
                            <i class="fas fa-exclamation-circle me-2"></i>
                            Deletion Consequences
                        </h6>
                        <ul class="mb-0">
                            <li><strong>Channel Configuration:</strong> All channel settings and credentials will be permanently deleted</li>
                            <li><strong>Message History:</strong> Historical message logs will be preserved but marked as orphaned</li>
                            {% if active_alert_rules > 0 %}
                            <li><strong>Alert Rules:</strong> {{ active_alert_rules }} active alert rule(s) using this channel will be disabled</li>
                            {% endif %}
                            {% if pending_messages > 0 %}
                            <li><strong>Pending Messages:</strong> {{ pending_messages }} pending message(s) will fail to deliver</li>
                            {% endif %}
                            <li><strong>Future Messages:</strong> No new messages can be sent through this channel</li>
                            <li><strong>Integrations:</strong> Any external integrations using this channel will stop working</li>
                        </ul>
                    </div>

                    <!-- Affected Alert Rules -->
                    {% if affected_alert_rules %}
                    <div class="mb-4">
                        <h6 class="text-muted mb-2">Affected Alert Rules:</h6>
                        <div class="table-responsive">
                            <table class="table table-sm table-bordered">
                                <thead class="table-light">
                                    <tr>
                                        <th>Rule Name</th>
                                        <th>Category</th>
                                        <th>Severity</th>
                                        <th>Status</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    {% for rule in affected_alert_rules %}
                                    <tr>
                                        <td>
                                            <a href="{% url 'communications:alert_rule_detail' rule.pk %}" target="_blank">
                                                {{ rule.rule_name }}
                                            </a>
                                        </td>
                                        <td>{{ rule.get_category_display }}</td>
                                        <td>
                                            <span class="badge bg-{% if rule.severity == 'CRITICAL' %}danger{% elif rule.severity == 'HIGH' %}warning{% elif rule.severity == 'MEDIUM' %}info{% else %}secondary{% endif %}">
                                                {{ rule.get_severity_display }}
                                            </span>
                                        </td>
                                        <td>
                                            <span class="badge bg-{% if rule.is_active %}success{% else %}secondary{% endif %}">
                                                {% if rule.is_active %}Active{% else %}Inactive{% endif %}
                                            </span>
                                        </td>
                                    </tr>
                                    {% endfor %}
                                </tbody>
                            </table>
                        </div>
                    </div>
                    {% endif %}

                    <!-- Alternative Actions -->
                    <div class="card bg-light mb-4">
                        <div class="card-header">
                            <h6 class="card-title mb-0">
                                <i class="fas fa-lightbulb me-2"></i>
                                Consider These Alternatives
                            </h6>
                        </div>
                        <div class="card-body">
                            <div class="row">
                                <div class="col-md-6">
                                    <div class="d-flex align-items-start mb-3">
                                        <div class="flex-shrink-0">
                                            <div class="avatar-xs">
                                                <div class="avatar-title bg-soft-warning text-warning rounded">
                                                    <i class="fas fa-pause"></i>
                                                </div>
                                            </div>
                                        </div>
                                        <div class="flex-grow-1 ms-2">
                                            <h6 class="mb-1">Disable Channel</h6>
                                            <p class="text-muted mb-0">Temporarily stop using this channel without losing configuration</p>
                                        </div>
                                    </div>
                                </div>
                                <div class="col-md-6">
                                    <div class="d-flex align-items-start mb-3">
                                        <div class="flex-shrink-0">
                                            <div class="avatar-xs">
                                                <div class="avatar-title bg-soft-info text-info rounded">
                                                    <i class="fas fa-archive"></i>
                                                </div>
                                            </div>
                                        </div>
                                        <div class="flex-grow-1 ms-2">
                                            <h6 class="mb-1">Archive Channel</h6>
                                            <p class="text-muted mb-0">Keep configuration for future use but mark as inactive</p>
                                        </div>
                                    </div>
                                </div>
                            </div>
                            <div class="row">
                                <div class="col-md-6">
                                    <div class="d-flex align-items-start mb-3">
                                        <div class="flex-shrink-0">
                                            <div class="avatar-xs">
                                                <div class="avatar-title bg-soft-success text-success rounded">
                                                    <i class="fas fa-exchange-alt"></i>
                                                </div>
                                            </div>
                                        </div>
                                        <div class="flex-grow-1 ms-2">
                                            <h6 class="mb-1">Migrate to New Channel</h6>
                                            <p class="text-muted mb-0">Create a replacement channel and transfer alert rules</p>
                                        </div>
                                    </div>
                                </div>
                                <div class="col-md-6">
                                    <div class="d-flex align-items-start mb-3">
                                        <div class="flex-shrink-0">
                                            <div class="avatar-xs">
                                                <div class="avatar-title bg-soft-primary text-primary rounded">
                                                    <i class="fas fa-download"></i>
                                                </div>
                                            </div>
                                        </div>
                                        <div class="flex-grow-1 ms-2">
                                            <h6 class="mb-1">Export Configuration</h6>
                                            <p class="text-muted mb-0">Save channel settings before deletion for future reference</p>
                                        </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 fw-bold" for="confirmDeletion">
                                I understand the consequences and want to permanently delete this communication channel
                            </label>
                        </div>

                        <!-- Confirmation Text Input -->
                        <div class="mb-3">
                            <label for="confirmationText" class="form-label fw-bold">
                                Type <code>{{ object.name }}</code> to confirm deletion:
                            </label>
                            <input type="text" class="form-control" id="confirmationText" 
                                   placeholder="Enter channel name to confirm" required>
                            <div class="form-text">This ensures you're deleting the correct channel</div>
                        </div>

                        <!-- Reason for Deletion -->
                        <div class="mb-4">
                            <label for="deletionReason" class="form-label">Reason for deletion (optional):</label>
                            <textarea class="form-control" id="deletionReason" name="deletion_reason" rows="3" 
                                      placeholder="Provide a reason for this deletion for audit purposes..."></textarea>
                        </div>

                        <!-- Action Buttons -->
                        <div class="d-flex justify-content-between">
                            <div>
                                <a href="{% url 'communications:communication_channel_detail' object.pk %}" class="btn btn-outline-secondary">
                                    <i class="fas fa-arrow-left me-1"></i>
                                    Cancel
                                </a>
                                <button type="button" class="btn btn-outline-warning ms-2" onclick="disableChannel()">
                                    <i class="fas fa-pause me-1"></i>
                                    Disable Instead
                                </button>
                            </div>
                            <div>
                                <button type="button" class="btn btn-outline-info me-2" onclick="exportConfiguration()">
                                    <i class="fas fa-download me-1"></i>
                                    Export Config
                                </button>
                                <button type="submit" class="btn btn-danger" id="deleteButton" disabled>
                                    <i class="fas fa-trash me-1"></i>
                                    Delete Channel Permanently
                                </button>
                            </div>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block js %}
<script>
document.addEventListener('DOMContentLoaded', function() {
    const confirmCheckbox = document.getElementById('confirmDeletion');
    const confirmationText = document.getElementById('confirmationText');
    const deleteButton = document.getElementById('deleteButton');
    const channelName = '{{ object.name|escapejs }}';
    
    function validateForm() {
        const isChecked = confirmCheckbox.checked;
        const textMatches = confirmationText.value.trim() === channelName;
        
        deleteButton.disabled = !(isChecked && textMatches);
        
        if (textMatches) {
            confirmationText.classList.remove('is-invalid');
            confirmationText.classList.add('is-valid');
        } else if (confirmationText.value.trim() !== '') {
            confirmationText.classList.remove('is-valid');
            confirmationText.classList.add('is-invalid');
        } else {
            confirmationText.classList.remove('is-valid', 'is-invalid');
        }
    }
    
    confirmCheckbox.addEventListener('change', validateForm);
    confirmationText.addEventListener('input', validateForm);
    
    // Form submission confirmation
    document.getElementById('deleteForm').addEventListener('submit', function(e) {
        if (!confirm('Are you absolutely sure you want to delete this communication channel? This action cannot be undone.')) {
            e.preventDefault();
        } else {
            // Show loading state
            deleteButton.innerHTML = '<i class="fas fa-spinner fa-spin me-1"></i>Deleting...';
            deleteButton.disabled = true;
        }
    });
});

function disableChannel() {
    if (confirm('Disable this channel instead of deleting it?')) {
        fetch('{% url "communications:communication_channel_detail" object.pk %}toggle/', {
            method: 'POST',
            headers: {
                'X-CSRFToken': document.querySelector('[name=csrfmiddlewaretoken]').value,
                'Content-Type': 'application/json',
            },
            body: JSON.stringify({ active: false })
        })
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                alert('Channel has been disabled successfully.');
                window.location.href = '{% url "communications:communication_channel_detail" object.pk %}';
            } else {
                alert('Error disabling channel: ' + data.error);
            }
        });
    }
}

function exportConfiguration() {
    window.open('{% url "communications:communication_channel_detail" object.pk %}export/', '_blank');
}
</script>
{% endblock %}