@extends('admin.layouts.app')

@section('title', 'Edit Blog Post')

@section('content')
<div class="container-fluid">
    <div class="row">
        <div class="col-12">
            <div class="card">
                <div class="card-header">
                    <h3 class="card-title">Edit Blog Post</h3>
                    <div class="card-tools">
                        <a href="{{ route('admin.blog.index') }}" class="btn btn-secondary">
                            <i class="fas fa-arrow-left"></i> Back to List
                        </a>
                    </div>
                </div>
                <form action="{{ route('admin.blog.update', $blog) }}" method="POST">
                    @csrf
                    @method('PUT')
                    <div class="card-body">
                        @if($errors->any())
                            <div class="alert alert-danger">
                                <ul class="mb-0">
                                    @foreach($errors->all() as $error)
                                        <li>{{ $error }}</li>
                                    @endforeach
                                </ul>
                            </div>
                        @endif

                        <div class="row">
                            <div class="col-md-8">
                                <div class="mb-3">
                                    <label for="title" class="form-label">Title <span class="text-danger">*</span></label>
                                    <input type="text" class="form-control @error('title') is-invalid @enderror" 
                                           id="title" name="title" value="{{ old('title', $blog->title) }}" required>
                                    @error('title')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="mb-3">
                                    <label for="content" class="form-label">Content <span class="text-danger">*</span></label>
                                    <textarea class="form-control @error('content') is-invalid @enderror" 
                                              id="content" name="content" rows="15" required>{{ old('content', $blog->content) }}</textarea>
                                    @error('content')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>

                            <div class="col-md-4">
                                <div class="mb-3">
                                    <label for="status" class="form-label">Status <span class="text-danger">*</span></label>
                                    <select class="form-select @error('status') is-invalid @enderror" id="status" name="status" required>
                                        <option value="draft" {{ old('status', $blog->status) === 'draft' ? 'selected' : '' }}>Draft</option>
                                        <option value="published" {{ old('status', $blog->status) === 'published' ? 'selected' : '' }}>Published</option>
                                    </select>
                                    @error('status')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="mb-3">
                                    <label for="published_at" class="form-label">Publish Date</label>
                                    <input type="datetime-local" class="form-control @error('published_at') is-invalid @enderror" 
                                           id="published_at" name="published_at" 
                                           value="{{ old('published_at', $blog->published_at ? $blog->published_at->format('Y-m-d\TH:i') : '') }}">
                                    @error('published_at')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                    <small class="form-text text-muted">Leave empty to publish immediately when status is set to published</small>
                                </div>

                                <div class="mb-3">
                                    <label class="form-label">Current Slug</label>
                                    <div class="form-control-plaintext">{{ $blog->slug }}</div>
                                    <small class="form-text text-muted">Slug will be updated automatically if title changes</small>
                                </div>

                                <hr>

                                <h6>SEO Settings</h6>
                                
                                <div class="mb-3">
                                    <label for="meta_description" class="form-label">Meta Description</label>
                                    <textarea class="form-control @error('meta_description') is-invalid @enderror" 
                                              id="meta_description" name="meta_description" rows="3" 
                                              maxlength="160" placeholder="Brief description for search engines (max 160 characters)">{{ old('meta_description', $blog->meta_description) }}</textarea>
                                    @error('meta_description')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                    <small class="form-text text-muted"><span id="meta-desc-count">0</span>/160 characters</small>
                                </div>

                                <div class="mb-3">
                                    <label for="meta_keywords" class="form-label">Meta Keywords</label>
                                    <input type="text" class="form-control @error('meta_keywords') is-invalid @enderror" 
                                           id="meta_keywords" name="meta_keywords" value="{{ old('meta_keywords', $blog->meta_keywords) }}"
                                           placeholder="keyword1, keyword2, keyword3">
                                    @error('meta_keywords')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                    <small class="form-text text-muted">Separate keywords with commas</small>
                                </div>

                                <hr>

                                <div class="mb-3">
                                    <label class="form-label">Post Information</label>
                                    <div class="small text-muted">
                                        <div><strong>Created:</strong> {{ $blog->created_at->format('M d, Y H:i') }}</div>
                                        <div><strong>Updated:</strong> {{ $blog->updated_at->format('M d, Y H:i') }}</div>
                                        @if($blog->published_at)
                                            <div><strong>Published:</strong> {{ $blog->published_at->format('M d, Y H:i') }}</div>
                                        @endif
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                    <div class="card-footer">
                        <button type="submit" class="btn btn-primary">
                            <i class="fas fa-save"></i> Update Post
                        </button>
                        <a href="{{ route('admin.blog.show', $blog) }}" class="btn btn-info">
                            <i class="fas fa-eye"></i> Preview
                        </a>
                        <a href="{{ route('admin.blog.index') }}" class="btn btn-secondary">
                            <i class="fas fa-times"></i> Cancel
                        </a>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script src="https://cdn.ckeditor.com/ckeditor5/40.0.0/classic/ckeditor.js"></script>
<script>
    ClassicEditor
        .create(document.querySelector('#content'), {
            toolbar: {
                items: [
                    'heading', '|',
                    'bold', 'italic', 'link', '|',
                    'bulletedList', 'numberedList', '|',
                    'outdent', 'indent', '|',
                    'imageUpload', 'blockQuote', 'insertTable', '|',
                    'undo', 'redo'
                ]
            },
            language: 'en',
            image: {
                toolbar: [
                    'imageTextAlternative',
                    'imageStyle:inline',
                    'imageStyle:block',
                    'imageStyle:side'
                ]
            },
            table: {
                contentToolbar: [
                    'tableColumn',
                    'tableRow',
                    'mergeTableCells'
                ]
            }
        })
        .then(editor => {
            window.editor = editor;
        })
        .catch(error => {
            console.error('Error during initialization of the editor', error);
        });

    // Meta description character counter
    const metaDescription = document.getElementById('meta_description');
    const charCount = document.getElementById('meta-desc-count');
    
    if (metaDescription && charCount) {
        metaDescription.addEventListener('input', function() {
            const length = this.value.length;
            charCount.textContent = length;
            
            if (length > 160) {
                this.classList.add('is-invalid');
            } else {
                this.classList.remove('is-invalid');
            }
        });
        
        // Update character count on page load
        document.addEventListener('DOMContentLoaded', function() {
            if (metaDescription.value) {
                charCount.textContent = metaDescription.value.length;
            }
        });
    }
</script>
@endpush