@extends('layouts.app')

@section('content')
    <div id="page-container" class="fade page-sidebar-fixed page-header-fixed page-with-wide-sidebar">
        <!-- begin #header -->
        @include('partials.header')
        <!-- end #header -->

        <!-- begin #sidebar -->
        @include('partials.sidebar')
        <!-- end #sidebar -->

        <!-- begin #content -->
        <div id="content" class="content">
            <!-- begin breadcrumb -->
            <ol class="breadcrumb float-xl-right">
                <li class="breadcrumb-item"><a href="javascript:;">Home</a></li>
                <li class="breadcrumb-item"><a href="javascript:;">Page Options</a></li>
                <li class="breadcrumb-item active">Background Image</li>
            </ol>
            <!-- end breadcrumb -->
            <!-- begin page-header -->
            <h1 class="page-header">Add Background Image</h1>
            <!-- end page-header -->
            <!-- begin panel -->
            <div class="panel panel-inverse">
                <div class="panel-heading">
                    <h4 class="panel-title">Add Background Image</h4>
                </div>
                <div class="panel-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

                    <form action="{{ route('background_imgs.store') }}" method="POST" enctype="multipart/form-data"
                        id="backgroundImgForm">
                        @csrf
                        <input type="hidden" name="_token_guard" value="{{ $token ?? '' }}">

                        <div class="form-group">
                            <label for="name">Name <span class="text-danger">*</span></label>
                            <input type="text" name="name" id="name" class="form-control"
                                value="{{ old('name') }}">
                        </div>

                        <div class="form-group">
                            <label for="is_slide">Slide</label>
                            <input type="hidden" name="is_slide" value="0">
                            <div class="switcher">
                                <input type="checkbox" name="is_slide" id="is_slide" value="1"
                                    {{ old('is_slide') == '1' ? 'checked' : '' }}
                                    onchange="toggleImageUpload(this.checked)">
                                <label for="is_slide"></label>
                            </div>
                            <small class="form-text text-muted">
                                If slide is <strong>OFF</strong>: Upload exactly 1 image<br>
                                If slide is <strong>ON</strong>: Upload 2-3 images (maximum 3 images) and upload 2 at once
                            </small>
                        </div>

                        <div class="form-group">
                            <label for="path">Upload Images <span class="text-danger">*</span></label>
                            <input type="file" name="path[]" id="path" class="form-control"
                                accept="image/jpeg,image/png,image/jpg,image/gif" multiple>
                            <small class="form-text text-muted">
                                <strong id="maxImagesText">Maximum 3 images allowed.</strong><br>
                                Accepted formats: JPEG, PNG, JPG, GIF<br>
                                Maximum size: 5MB per image<br>
                                Maximum dimensions: 1920x1080 pixels
                            </small>
                            <div id="imagePreview" class="mt-3"></div>
                        </div>

                        <button type="submit" class="btn btn-custom" id="submitBtn">
                            <i class="fa fa-save"></i> Submit
                        </button>
                        <a href="{{ route('background_imgs.index') }}" class="btn btn-custom">
                            <i class="fa fa-arrow-left"></i> Back
                        </a>
                    </form>
                </div>
            </div>
            <!-- end panel -->
        </div>
        <!-- end #content -->

        <!-- begin scroll to top btn -->
        <a href="javascript:;" class="btn btn-icon btn-circle btn-success btn-scroll-to-top fade" data-click="scroll-top"><i
                class="fa fa-angle-up"></i></a>
        <!-- end scroll to top btn -->

        <script>
            function toggleImageUpload(isChecked) {
                const imageInput = document.getElementById('path');
                const imagePreview = document.getElementById('imagePreview');
                const maxImagesText = document.getElementById('maxImagesText');

                // Clear preview when toggling
                imagePreview.innerHTML = '';
                imageInput.value = '';

                // Update max images text based on slide state
                if (isChecked) {
                    maxImagesText.textContent = 'Maximum 3 images allowed.';
                } else {
                    maxImagesText.textContent = 'Maximum 1 image allowed.';
                }
            }

            // Prevent double submission - MUST BE AT DOCUMENT LEVEL
            document.addEventListener('DOMContentLoaded', function() {
                const form = document.getElementById('backgroundImgForm');
                const submitBtn = document.getElementById('submitBtn');
                const isSlide = document.getElementById('is_slide').checked;
                const maxImagesText = document.getElementById('maxImagesText');
                let isSubmitting = false;

                // Initialize max images text based on initial slide state
                if (isSlide) {
                    maxImagesText.textContent = 'Maximum 3 images allowed.';
                } else {
                    maxImagesText.textContent = 'Maximum 1 image allowed.';
                }

                if (form && submitBtn) {
                    form.addEventListener('submit', function(e) {
                        if (isSubmitting) {
                            e.preventDefault();
                            return false;
                        }

                        isSubmitting = true;
                        submitBtn.disabled = true;
                        submitBtn.innerHTML = '<i class="fa fa-spinner fa-spin"></i> Uploading...';
                    });
                }
            });

            // Preview images with max 3 limit
            document.getElementById('path').addEventListener('change', function(e) {
                const imagePreview = document.getElementById('imagePreview');
                imagePreview.innerHTML = '';

                const files = Array.from(this.files);
                const isSlide = document.getElementById('is_slide').checked;

                // Enforce max 3 images limit
                if (isSlide && files.length > 3) {
                    alert('You can upload maximum 3 images only.');
                    this.value = '';
                    return;
                }

                // Check slide validation
                if (!isSlide && files.length > 1) {
                    alert('You can only upload 1 image when slide is OFF.');
                    this.value = '';
                    return;
                }

                if (!isSlide && files.length > 3) {
                    alert('You can only upload 1 image when slide is OFF.');
                    this.value = '';
                    return;
                }

                if (isSlide && files.length < 2) {
                    alert('You must upload at least 2 images when slide is ON.');
                    this.value = '';
                    return;
                }

                // Show preview
                files.forEach((file, index) => {
                    if (file.type.startsWith('image/')) {
                        const reader = new FileReader();
                        reader.onload = function(event) {
                            const imgDiv = document.createElement('div');
                            imgDiv.className = 'd-inline-block mr-2 mb-2';
                            imgDiv.style.width = '150px';
                            imgDiv.innerHTML = `
                                <img src="${event.target.result}" class="img-thumbnail" style="width: 100%; height: 150px; object-fit: cover;">
                                <small class="d-block text-center">Image ${index + 1}</small>
                            `;
                            imagePreview.appendChild(imgDiv);
                        };
                        reader.readAsDataURL(file);
                    }
                });
            });
        </script>
    </div>
@endsection