{% extends 'base.html' %}

{% block title %}Tags | Admin | {{ settings.site_name }}{% endblock %}

{% block content %}
<section class="section-light py-4">
    <div class="container">
        <div class="row align-items-center">
            <div class="col-md-6">
                <nav aria-label="breadcrumb">
                    <ol class="breadcrumb mb-1">
                        <li class="breadcrumb-item"><a href="{{ url_for('admin.dashboard') }}">Dashboard</a></li>
                        <li class="breadcrumb-item active">Tags</li>
                    </ol>
                </nav>
                <h1 class="h3 mb-0">Manage Tags</h1>
            </div>
            <div class="col-md-6 text-md-end mt-3 mt-md-0">
                <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#tagModal">
                    <i class="fas fa-plus me-2"></i>Add Tag
                </button>
            </div>
        </div>
    </div>
</section>

<section class="section">
    <div class="container">
        <div class="card border-0 shadow-sm">
            <div class="card-header bg-transparent py-3">
                <div class="row align-items-center">
                    <div class="col-md-6">
                        <span class="text-muted">{{ tags|length }} tag{{ 's' if tags|length != 1 else '' }} total</span>
                    </div>
                    <div class="col-md-6">
                        <form action="" method="GET" class="d-flex">
                            <input type="text" name="q" class="form-control" placeholder="Search tags..."
                                   value="{{ request.args.get('q', '') }}">
                            <button type="submit" class="btn btn-outline-primary ms-2">
                                <i class="fas fa-search"></i>
                            </button>
                        </form>
                    </div>
                </div>
            </div>
            <div class="card-body p-0">
                {% if tags %}
                <div class="table-responsive">
                    <table class="table table-hover align-middle mb-0">
                        <thead class="table-light">
                            <tr>
                                <th>Name</th>
                                <th>Slug</th>
                                <th class="text-center">Articles</th>
                                <th class="text-center">Created</th>
                                <th class="text-end">Actions</th>
                            </tr>
                        </thead>
                        <tbody>
                            {% for tag in tags %}
                            <tr>
                                <td>
                                    <span class="badge bg-primary-subtle text-primary fs-6">
                                        <i class="fas fa-tag me-1"></i>{{ tag.name }}
                                    </span>
                                </td>
                                <td class="text-muted">{{ tag.slug }}</td>
                                <td class="text-center">
                                    {% set article_count = tag.articles.count() %}
                                    <span class="badge bg-{{ 'secondary' if article_count == 0 else 'primary' }}">
                                        {{ article_count }}
                                    </span>
                                </td>
                                <td class="text-center text-muted">{{ tag.created_at.strftime('%b %d, %Y') }}</td>
                                <td class="text-end">
                                    <a href="{{ url_for('main.articles_by_tag', slug=tag.slug) }}" 
                                       class="btn btn-sm btn-outline-secondary me-1" title="View Articles"
                                       target="_blank">
                                        <i class="fas fa-external-link-alt"></i>
                                    </a>
                                    <button type="button" class="btn btn-sm btn-outline-primary me-1 edit-tag-btn"
                                            data-id="{{ tag.id }}"
                                            data-name="{{ tag.name }}"
                                            data-slug="{{ tag.slug }}"
                                            data-bs-toggle="modal" data-bs-target="#tagModal"
                                            title="Edit">
                                        <i class="fas fa-edit"></i>
                                    </button>
                                    <button type="button" class="btn btn-sm btn-outline-danger delete-tag-btn"
                                            data-id="{{ tag.id }}"
                                            data-name="{{ tag.name }}"
                                            data-article-count="{{ tag.articles.count() }}"
                                            data-bs-toggle="modal" data-bs-target="#deleteModal"
                                            title="Delete">
                                        <i class="fas fa-trash"></i>
                                    </button>
                                </td>
                            </tr>
                            {% endfor %}
                        </tbody>
                    </table>
                </div>
                {% else %}
                <div class="text-center py-5">
                    <i class="fas fa-tags text-muted" style="font-size: 3rem;"></i>
                    <p class="text-muted mt-3 mb-0">No tags found</p>
                    <button type="button" class="btn btn-primary mt-3" data-bs-toggle="modal" data-bs-target="#tagModal">
                        <i class="fas fa-plus me-2"></i>Create First Tag
                    </button>
                </div>
                {% endif %}
            </div>
        </div>
        
        <!-- Popular Tags Quick View -->
        {% if tags %}
        <div class="card border-0 shadow-sm mt-4">
            <div class="card-header bg-transparent">
                <h5 class="mb-0"><i class="fas fa-chart-bar me-2"></i>Tag Cloud</h5>
            </div>
            <div class="card-body">
                <div class="d-flex flex-wrap gap-2">
                    {% for tag in tags %}
                    <a href="{{ url_for('main.articles_by_tag', slug=tag.slug) }}" 
                       class="btn btn-outline-primary btn-sm"
                       style="font-size: {{ [0.75, 0.75 + (tag.articles.count() * 0.1)]|max|min(1.5) }}rem;"
                       target="_blank">
                        {{ tag.name }}
                        <span class="badge bg-primary ms-1">{{ tag.articles.count() }}</span>
                    </a>
                    {% endfor %}
                </div>
            </div>
        </div>
        {% endif %}
    </div>
</section>

<!-- Tag Modal (Add/Edit) -->
<div class="modal fade" id="tagModal" tabindex="-1" aria-labelledby="tagModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <form id="tagForm" method="POST">
                <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
                <input type="hidden" name="tag_id" id="tag_id" value="">
                
                <div class="modal-header">
                    <h5 class="modal-title" id="tagModalLabel">Add Tag</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                </div>
                <div class="modal-body">
                    <div class="mb-3">
                        <label for="tag_name" class="form-label">Tag Name <span class="text-danger">*</span></label>
                        <input type="text" class="form-control" id="tag_name" name="name" required
                               placeholder="e.g., Machine Learning">
                    </div>
                    <div class="mb-3">
                        <label for="tag_slug" class="form-label">Slug</label>
                        <input type="text" class="form-control" id="tag_slug" name="slug"
                               placeholder="auto-generated-from-name">
                        <div class="form-text">Leave empty to auto-generate from name</div>
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
                    <button type="submit" class="btn btn-primary" id="tagSubmitBtn">Add Tag</button>
                </div>
            </form>
        </div>
    </div>
</div>

<!-- Delete Confirmation Modal -->
<div class="modal fade" id="deleteModal" tabindex="-1" aria-labelledby="deleteModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <form id="deleteForm" method="POST">
                <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
                <input type="hidden" name="_method" value="DELETE">
                
                <div class="modal-header">
                    <h5 class="modal-title" id="deleteModalLabel">Delete Tag</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                </div>
                <div class="modal-body">
                    <div class="alert alert-warning">
                        <i class="fas fa-exclamation-triangle me-2"></i>
                        <strong>Warning:</strong> This action cannot be undone.
                    </div>
                    <p>Are you sure you want to delete the tag "<strong id="deleteTagName"></strong>"?</p>
                    <p class="text-muted mb-0" id="deleteTagInfo"></p>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
                    <button type="submit" class="btn btn-danger">Delete Tag</button>
                </div>
            </form>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
document.addEventListener('DOMContentLoaded', function() {
    const tagModal = document.getElementById('tagModal');
    const tagForm = document.getElementById('tagForm');
    const tagModalLabel = document.getElementById('tagModalLabel');
    const tagSubmitBtn = document.getElementById('tagSubmitBtn');
    const tagIdInput = document.getElementById('tag_id');
    const tagNameInput = document.getElementById('tag_name');
    const tagSlugInput = document.getElementById('tag_slug');
    
    // Auto-generate slug from name
    tagNameInput.addEventListener('input', function() {
        if (!tagIdInput.value) { // Only auto-generate for new tags
            const slug = this.value.toLowerCase()
                .replace(/[^\w\s-]/g, '')
                .replace(/[\s_-]+/g, '-')
                .replace(/^-+|-+$/g, '');
            tagSlugInput.value = slug;
        }
    });
    
    // Reset modal for adding new tag
    tagModal.addEventListener('show.bs.modal', function(event) {
        const button = event.relatedTarget;
        if (!button.classList.contains('edit-tag-btn')) {
            tagModalLabel.textContent = 'Add Tag';
            tagSubmitBtn.textContent = 'Add Tag';
            tagForm.action = "{{ url_for('admin.add_tag') }}";
            tagIdInput.value = '';
            tagNameInput.value = '';
            tagSlugInput.value = '';
        }
    });
    
    // Handle edit button clicks
    document.querySelectorAll('.edit-tag-btn').forEach(function(btn) {
        btn.addEventListener('click', function() {
            const id = this.dataset.id;
            const name = this.dataset.name;
            const slug = this.dataset.slug;
            
            tagModalLabel.textContent = 'Edit Tag';
            tagSubmitBtn.textContent = 'Save Changes';
            tagForm.action = "{{ url_for('admin.edit_tag', id=0) }}".replace('0', id);
            tagIdInput.value = id;
            tagNameInput.value = name;
            tagSlugInput.value = slug;
        });
    });
    
    // Handle delete button clicks
    document.querySelectorAll('.delete-tag-btn').forEach(function(btn) {
        btn.addEventListener('click', function() {
            const id = this.dataset.id;
            const name = this.dataset.name;
            const articleCount = parseInt(this.dataset.articleCount);
            
            document.getElementById('deleteTagName').textContent = name;
            document.getElementById('deleteForm').action = "{{ url_for('admin.delete_tag', id=0) }}".replace('0', id);
            
            const info = document.getElementById('deleteTagInfo');
            if (articleCount > 0) {
                info.innerHTML = '<i class="fas fa-info-circle me-1"></i>This tag is used by <strong>' + articleCount + '</strong> article' + (articleCount !== 1 ? 's' : '') + '. The articles will not be deleted.';
            } else {
                info.innerHTML = '<i class="fas fa-info-circle me-1"></i>This tag is not used by any articles.';
            }
        });
    });
});
</script>
{% endblock %}