@extends('user::layouts.backend-master')
@section('breadcrumb_title', 'Edit Course')

@section('content')
    <div class="d-flex justify-content-between align-items-center mb-4">
        <h1>Edit Course: {{ $course->title }}</h1>
        <div>
            <a href="{{ route('admin.course.show', $course->id) }}" class="btn btn-info">
                <i class="fas fa-eye"></i> View
            </a>
            <a href="{{ route('admin.course.index') }}" class="btn btn-secondary">
                <i class="fas fa-arrow-left"></i> Back to Courses
            </a>
        </div>
    </div>

    <form action="{{ route('admin.course.update', $course->id) }}" method="POST" enctype="multipart/form-data">
        @csrf
        @method('PUT')

        <div class="row">
            <div class="col-md-8">
                <div class="card mb-4">
                    <div class="card-header">
                        <h5>Basic Information</h5>
                    </div>
                    <div class="card-body">
                        <div class="mb-3">
                            <label class="form-label">Title <span class="text-danger">*</span></label>
                            <input type="text" class="form-control @error('title') is-invalid @enderror" name="title"
                                value="{{ old('title', $course->title) }}" required>
                            @error('title')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Slug</label>
                            <input type="text" class="form-control @error('slug') is-invalid @enderror" name="slug"
                                value="{{ old('slug', $course->slug) }}">
                            @error('slug')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Short Description</label>
                            <textarea class="form-control @error('excerpt') is-invalid @enderror" name="excerpt" rows="3">{{ old('excerpt', $course->excerpt) }}</textarea>
                            @error('excerpt')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Full Description</label>
                            <textarea class="form-control tinymce @error('content') is-invalid @enderror" name="content">{{ old('content', $course->content) }}</textarea>
                            @error('content')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>
                    </div>
                </div>

                <div class="card mb-4">
                    <div class="card-header">
                        <h5>Course Details</h5>
                    </div>
                    <div class="card-body">
                        <div class="row">
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label class="form-label">Level</label>
                                    <select class="form-select @error('level') is-invalid @enderror" name="level">
                                        <option value="">Select Level</option>
                                        @foreach ($levels as $level)
                                            <option value="{{ $level }}"
                                                {{ old('level', $course->level) === $level ? 'selected' : '' }}>
                                                {{ ucfirst($level) }}
                                            </option>
                                        @endforeach
                                    </select>
                                    @error('level')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label class="form-label">Duration (hours)</label>
                                    <input type="number" step="0.1"
                                        class="form-control @error('duration') is-invalid @enderror" name="duration"
                                        value="{{ old('duration', $course->duration) }}">
                                    @error('duration')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                        </div>

                        <div class="row">
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label class="form-label">Regular Price</label>
                                    <div class="input-group">
                                        <span class="input-group-text">$</span>
                                        <input type="number" step="0.01"
                                            class="form-control @error('price') is-invalid @enderror" name="price"
                                            value="{{ old('price', $course->price) }}">
                                    </div>
                                    @error('price')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label class="form-label">Sale Price</label>
                                    <div class="input-group">
                                        <span class="input-group-text">$</span>
                                        <input type="number" step="0.01"
                                            class="form-control @error('sale_price') is-invalid @enderror" name="sale_price"
                                            value="{{ old('sale_price', $course->sale_price) }}">
                                    </div>
                                    @error('sale_price')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                        </div>

                        <div class="form-check mb-3">
                            <input type="checkbox" class="form-check-input" name="is_free" value="1"
                                {{ old('is_free', $course->getMeta('is_free')) ? 'checked' : '' }} id="is_free">
                            <label class="form-check-label" for="is_free">Free Course</label>
                        </div>

                        <div class="form-check mb-3">
                            <input type="checkbox" class="form-check-input" name="has_certificate" value="1"
                                {{ old('has_certificate', $course->getMeta('certificate')) ? 'checked' : '' }}
                                id="has_certificate">
                            <label class="form-check-label" for="has_certificate">Certificate Upon Completion</label>
                        </div>
                    </div>
                </div>

                <div class="card mb-4">
                    <div class="card-header d-flex justify-content-between align-items-center">
                        <h5 class="mb-0">Learning Outcomes</h5>
                        <button type="button" class="btn btn-sm btn-primary add-outcome-btn">Add Outcome</button>
                    </div>
                    <div class="card-body">
                        <div id="outcomes-container">
                            @php
                                $outcomes = old('learning_outcomes', $course->getMeta('what_you_learn', []));
                                $outcomes = is_array($outcomes) ? $outcomes : [];
                            @endphp

                            @if (count($outcomes) > 0)
                                @foreach ($outcomes as $outcome)
                                    <div class="input-group mb-2 outcome-item">
                                        <input type="text" class="form-control" name="learning_outcomes[]"
                                            value="{{ $outcome }}">
                                        <button type="button"
                                            class="btn btn-outline-danger remove-outcome-btn">Remove</button>
                                    </div>
                                @endforeach
                            @else
                                <div class="input-group mb-2 outcome-item">
                                    <input type="text" class="form-control" name="learning_outcomes[]"
                                        placeholder="What users will learn...">
                                    <button type="button"
                                        class="btn btn-outline-danger remove-outcome-btn">Remove</button>
                                </div>
                            @endif
                        </div>
                    </div>
                </div>

                <div class="card mb-4">
                    <div class="card-header d-flex justify-content-between align-items-center">
                        <h5 class="mb-0">Requirements</h5>
                        <button type="button" class="btn btn-sm btn-primary add-requirement-btn">Add Requirement</button>
                    </div>
                    <div class="card-body">
                        <div id="requirements-container">
                            @php
                                $requirements = old('requirements', $course->getMeta('requirements', []));
                                $requirements = is_array($requirements) ? $requirements : [];
                            @endphp

                            @if (count($requirements) > 0)
                                @foreach ($requirements as $requirement)
                                    <div class="input-group mb-2 requirement-item">
                                        <input type="text" class="form-control" name="requirements[]"
                                            value="{{ $requirement }}">
                                        <button type="button"
                                            class="btn btn-outline-danger remove-requirement-btn">Remove</button>
                                    </div>
                                @endforeach
                            @else
                                <div class="input-group mb-2 requirement-item">
                                    <input type="text" class="form-control" name="requirements[]"
                                        placeholder="Prerequisites for this course...">
                                    <button type="button"
                                        class="btn btn-outline-danger remove-requirement-btn">Remove</button>
                                </div>
                            @endif
                        </div>
                    </div>
                </div>
            </div>

            <div class="col-md-4">
                <!-- Publishing Options -->
                <div class="card mb-4">
                    <div class="card-header">
                        <h5>Publishing Options</h5>
                    </div>
                    <div class="card-body">
                        <div class="mb-3">
                            <label class="form-label">Status <span class="text-danger">*</span></label>
                            <select class="form-select @error('status') is-invalid @enderror" name="status" required>
                                <option value="draft" {{ old('status', $course->status) === 'draft' ? 'selected' : '' }}>
                                    Draft</option>
                                <option value="published"
                                    {{ old('status', $course->status) === 'published' ? 'selected' : '' }}>Published
                                </option>
                                <option value="scheduled"
                                    {{ old('status', $course->status) === 'scheduled' ? 'selected' : '' }}>Scheduled
                                </option>
                                <option value="archived"
                                    {{ old('status', $course->status) === 'archived' ? 'selected' : '' }}>Archived</option>
                            </select>
                            @error('status')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Language <span class="text-danger">*</span></label>
                            <select class="form-select @error('language_code') is-invalid @enderror" name="language_code"
                                required>
                                @foreach ($languages as $language)
                                    <option value="{{ $language->code }}"
                                        {{ old('language_code', $course->language_code) === $language->code ? 'selected' : '' }}>
                                        {{ $language->name }}
                                    </option>
                                @endforeach
                            </select>
                            @error('language_code')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Published Date</label>
                            <input type="datetime-local" class="form-control @error('published_at') is-invalid @enderror"
                                name="published_at"
                                value="{{ old('published_at', $course->published_at ? $course->published_at->format('Y-m-d\TH:i') : '') }}">
                            @error('published_at')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <div class="form-check mb-3">
                            <input type="checkbox" class="form-check-input" name="is_featured" value="1"
                                {{ old('is_featured', $course->isFeatured()) ? 'checked' : '' }} id="is_featured">
                            <label class="form-check-label" for="is_featured">Featured Course</label>
                        </div>
                    </div>
                </div>

                <!-- Categories -->
                <div class="card mb-4">
                    <div class="card-header">
                        <h5>Categories</h5>
                    </div>
                    <div class="card-body">
                        <div style="max-height: 200px; overflow-y: auto;">
                            @php
                                $selectedTaxonomies = old('taxonomies', $course->taxonomies->pluck('id')->toArray());
                            @endphp

                            @foreach ($categories as $category)
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" name="taxonomies[]"
                                        value="{{ $category->id }}" id="category-{{ $category->id }}"
                                        {{ in_array($category->id, $selectedTaxonomies) ? 'checked' : '' }}>
                                    <label class="form-check-label" for="category-{{ $category->id }}">
                                        {{ $category->name }}
                                    </label>
                                </div>
                                @if ($category->children->count() > 0)
                                    @foreach ($category->children as $child)
                                        <div class="form-check ms-3">
                                            <input class="form-check-input" type="checkbox" name="taxonomies[]"
                                                value="{{ $child->id }}" id="category-{{ $child->id }}"
                                                {{ in_array($child->id, $selectedTaxonomies) ? 'checked' : '' }}>
                                            <label class="form-check-label" for="category-{{ $child->id }}">
                                                — {{ $child->name }}
                                            </label>
                                        </div>
                                    @endforeach
                                @endif
                            @endforeach
                        </div>
                    </div>
                </div>

                <!-- Topics -->
                <div class="card mb-4">
                    <div class="card-header">
                        <h5>Topics</h5>
                    </div>
                    <div class="card-body">
                        <div style="max-height: 200px; overflow-y: auto;">
                            @foreach ($topics as $topic)
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" name="taxonomies[]"
                                        value="{{ $topic->id }}" id="topic-{{ $topic->id }}"
                                        {{ in_array($topic->id, $selectedTaxonomies) ? 'checked' : '' }}>
                                    <label class="form-check-label" for="topic-{{ $topic->id }}">
                                        {{ $topic->name }}
                                    </label>
                                </div>
                            @endforeach
                        </div>
                    </div>
                </div>

                <!-- Featured Image -->
                <div class="card mb-4">
                    <div class="card-header">
                        <h5>Featured Image</h5>
                    </div>
                    <div class="card-body">
                        @if ($course->getFirstMediaUrl('featured'))
                            <div class="mb-3">
                                <img src="{{ $course->getFirstMediaUrl('featured', 'thumb') }}"
                                    class="img-thumbnail mb-2" alt="{{ $course->title }}">
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" name="remove_featured_image"
                                        id="remove_featured_image">
                                    <label class="form-check-label" for="remove_featured_image">
                                        Remove featured image
                                    </label>
                                </div>
                            </div>
                        @endif

                        <div class="mb-3">
                            <input type="file" class="form-control @error('featured_image') is-invalid @enderror"
                                name="featured_image" accept="image/*">
                            @error('featured_image')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>
                    </div>
                </div>

                <!-- Gallery -->
                <div class="card mb-4">
                    <div class="card-header">
                        <h5>Gallery</h5>
                    </div>
                    <div class="card-body">
                        @if ($course->getMedia('gallery')->count() > 0)
                            <div class="mb-3">
                                <div class="row g-2">
                                    @foreach ($course->getMedia('gallery') as $media)
                                        <div class="col-4">
                                            <div class="position-relative">
                                                <img src="{{ $media->getUrl('thumb') }}" class="img-thumbnail"
                                                    alt="Gallery image">
                                                <div class="position-absolute top-0 end-0">
                                                    <div class="form-check">
                                                        <input class="form-check-input" type="checkbox"
                                                            name="remove_gallery[]" value="{{ $media->id }}">
                                                    </div>
                                                </div>
                                            </div>
                                        </div>
                                    @endforeach
                                </div>
                                <div class="mt-2">
                                    <div class="form-check">
                                        <input class="form-check-input" type="checkbox" name="replace_gallery"
                                            id="replace_gallery">
                                        <label class="form-check-label" for="replace_gallery">
                                            Replace all gallery images
                                        </label>
                                    </div>
                                </div>
                            </div>
                        @endif

                        <div class="mb-3">
                            <input type="file" class="form-control @error('gallery.*') is-invalid @enderror"
                                name="gallery[]" multiple accept="image/*">
                            @error('gallery.*')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class="row mt-4 mb-5">
            <div class="col-12">
                <button type="submit" class="btn btn-primary">Update Course</button>
                <a href="{{ route('admin.course.index') }}" class="btn btn-secondary">Cancel</a>
            </div>
        </div>
    </form>
@endsection

@push('scripts')
    <script>
        document.addEventListener('DOMContentLoaded', function() {
            // Learning outcomes
            document.querySelector('.add-outcome-btn').addEventListener('click', function() {
                const container = document.getElementById('outcomes-container');
                const newItem = document.createElement('div');
                newItem.className = 'input-group mb-2 outcome-item';
                newItem.innerHTML = `
                <input type="text" class="form-control" name="learning_outcomes[]" placeholder="What users will learn...">
                <button type="button" class="btn btn-outline-danger remove-outcome-btn">Remove</button>
            `;
                container.appendChild(newItem);
            });

            document.getElementById('outcomes-container').addEventListener('click', function(e) {
                if (e.target.classList.contains('remove-outcome-btn')) {
                    const items = document.querySelectorAll('.outcome-item');
                    if (items.length > 1) {
                        e.target.closest('.outcome-item').remove();
                    }
                }
            });

            // Requirements
            document.querySelector('.add-requirement-btn').addEventListener('click', function() {
                const container = document.getElementById('requirements-container');
                const newItem = document.createElement('div');
                newItem.className = 'input-group mb-2 requirement-item';
                newItem.innerHTML = `
                <input type="text" class="form-control" name="requirements[]" placeholder="Prerequisites for this course...">
                <button type="button" class="btn btn-outline-danger remove-requirement-btn">Remove</button>
            `;
                container.appendChild(newItem);
            });

            document.getElementById('requirements-container').addEventListener('click', function(e) {
                if (e.target.classList.contains('remove-requirement-btn')) {
                    const items = document.querySelectorAll('.requirement-item');
                    if (items.length > 1) {
                        e.target.closest('.requirement-item').remove();
                    }
                }
            });

            // Free course toggle
            document.getElementById('is_free').addEventListener('change', function() {
                const priceInputs = document.querySelectorAll('[name="price"], [name="sale_price"]');
                priceInputs.forEach(input => {
                    input.disabled = this.checked;
                    if (this.checked) {
                        input.value = '';
                    }
                });
            });

            // Initialize free course state
            if (document.getElementById('is_free').checked) {
                const priceInputs = document.querySelectorAll('[name="price"], [name="sale_price"]');
                priceInputs.forEach(input => {
                    input.disabled = true;
                });
            }
        });
    </script>
@endpush