@extends('layouts.admin')

@section('title', 'Tambah Produk Baru')

@section('content')
<div class="row mb-4">
    <div class="col-12">
        <nav aria-label="breadcrumb">
            <ol class="breadcrumb mb-1">
                <li class="breadcrumb-item"><a href="{{ route('admin.dashboard') }}" class="text-decoration-none">Dashboard</a></li>
                <li class="breadcrumb-item"><a href="{{ route('admin.products.index') }}" class="text-decoration-none">Produk</a></li>
                <li class="breadcrumb-item active" aria-current="page">Tambah Produk</li>
            </ol>
        </nav>
        <h1 class="h3 fw-bold text-dark mb-0">Tambah Produk Baru</h1>
        <p class="text-muted small mb-0">Lengkapi formulir di bawah ini untuk menambahkan produk baru ke katalog toko.</p>
    </div>
</div>

@if ($categories->isEmpty())
    <div class="alert alert-warning border shadow-sm p-4 rounded-3 mb-4 d-flex align-items-center justify-content-between">
        <div class="d-flex align-items-center gap-3">
            <i class="bi bi-exclamation-triangle-fill fs-2 text-warning"></i>
            <div>
                <h5 class="fw-bold mb-1">Belum Ada Kategori Tersedia!</h5>
                <p class="mb-0 text-muted small">Anda perlu membuat minimal 1 kategori sebelum dapat menambahkan produk.</p>
            </div>
        </div>
        <a href="{{ route('admin.categories.create') }}" class="btn btn-warning fw-semibold">
            <i class="bi bi-folder-plus me-1"></i> Buat Kategori Sekarang
        </a>
    </div>
@endif

<div class="row justify-content-center">
    <div class="col-lg-10">
        <div class="card card-custom">
            <div class="card-header bg-white py-3 border-bottom">
                <div class="d-flex align-items-center gap-2">
                    <i class="bi bi-box-seam-fill text-success fs-5"></i>
                    <h5 class="card-title fw-bold mb-0 text-dark">Formulir Informasi Produk</h5>
                </div>
            </div>
            <div class="card-body p-4">
                <form action="{{ route('admin.products.store') }}" method="POST" enctype="multipart/form-data">
                    @csrf

                    <div class="row g-4">
                        <!-- Kolom Kiri: Input Teks & Kategori -->
                        <div class="col-md-7">
                            <!-- Kategori Produk (Wajib dari tabel categories) -->
                            <div class="mb-3">
                                <label for="category_id" class="form-label fw-semibold text-dark">
                                    Kategori Produk <span class="text-danger">*</span>
                                </label>
                                <div class="input-group">
                                    <span class="input-group-text bg-light text-muted">
                                        <i class="bi bi-tag-fill"></i>
                                    </span>
                                    <select name="category_id" 
                                            id="category_id" 
                                            class="form-select @error('category_id') is-invalid @enderror" 
                                            required>
                                        <option value="">-- Pilih Kategori --</option>
                                        @foreach ($categories as $category)
                                            <option value="{{ $category->id }}" {{ old('category_id') == $category->id ? 'selected' : '' }}>
                                                {{ $category->name }}
                                            </option>
                                        @endforeach
                                    </select>
                                    @error('category_id')
                                        <div class="invalid-feedback">
                                            <i class="bi bi-exclamation-circle me-1"></i>{{ $message }}
                                        </div>
                                    @enderror
                                </div>
                                <div class="form-text small text-muted">Kategori diambil langsung dari tabel master kategori.</div>
                            </div>

                            <!-- Nama Produk -->
                            <div class="mb-3">
                                <label for="name" class="form-label fw-semibold text-dark">
                                    Nama Produk <span class="text-danger">*</span>
                                </label>
                                <input type="text" 
                                       name="name" 
                                       id="name" 
                                       class="form-control @error('name') is-invalid @enderror" 
                                       placeholder="Contoh: Kemeja Flannel Pria Lengan Panjang" 
                                       value="{{ old('name') }}" 
                                       required>
                                @error('name')
                                    <div class="invalid-feedback">
                                        <i class="bi bi-exclamation-circle me-1"></i>{{ $message }}
                                    </div>
                                @else
                                    <div class="form-text text-muted small mt-1">
                                        Slug otomatis: <code id="slugPreview" class="text-primary">-</code>
                                    </div>
                                @enderror
                            </div>

                            <!-- Harga & Stok (Grid) -->
                            <div class="row g-3 mb-3">
                                <div class="col-sm-6">
                                    <label for="price" class="form-label fw-semibold text-dark">
                                        Harga (Rupiah) <span class="text-danger">*</span>
                                    </label>
                                    <div class="input-group">
                                        <span class="input-group-text bg-light fw-bold text-secondary">Rp</span>
                                        <input type="number" 
                                               name="price" 
                                               id="price" 
                                               min="0" 
                                               step="1" 
                                               class="form-control @error('price') is-invalid @enderror" 
                                               placeholder="0" 
                                               value="{{ old('price') }}" 
                                               required>
                                        @error('price')
                                            <div class="invalid-feedback">
                                                <i class="bi bi-exclamation-circle me-1"></i>{{ $message }}
                                            </div>
                                        @enderror
                                    </div>
                                    <div class="form-text small text-muted" id="pricePreview">Format Rupiah: Rp 0</div>
                                </div>

                                <div class="col-sm-6">
                                    <label for="stock" class="form-label fw-semibold text-dark">
                                        Jumlah Stok <span class="text-danger">*</span>
                                    </label>
                                    <div class="input-group">
                                        <input type="number" 
                                               name="stock" 
                                               id="stock" 
                                               min="0" 
                                               step="1" 
                                               class="form-control @error('stock') is-invalid @enderror" 
                                               placeholder="0" 
                                               value="{{ old('stock', 0) }}" 
                                               required>
                                        <span class="input-group-text bg-light text-muted">Unit</span>
                                        @error('stock')
                                            <div class="invalid-feedback">
                                                <i class="bi bi-exclamation-circle me-1"></i>{{ $message }}
                                            </div>
                                        @enderror
                                    </div>
                                </div>
                            </div>

                            <!-- Deskripsi Produk -->
                            <div class="mb-3">
                                <label for="description" class="form-label fw-semibold text-dark">
                                    Deskripsi Produk <span class="text-muted fw-normal small">(Opsional)</span>
                                </label>
                                <textarea name="description" 
                                          id="description" 
                                          rows="5" 
                                          class="form-control @error('description') is-invalid @enderror" 
                                          placeholder="Jelaskan spesifikasi, keunggulan, bahan, dan rincian produk...">{{ old('description') }}</textarea>
                                @error('description')
                                    <div class="invalid-feedback">
                                        <i class="bi bi-exclamation-circle me-1"></i>{{ $message }}
                                    </div>
                                @enderror
                            </div>

                            <!-- Status Aktif / Nonaktif -->
                            <div class="form-check form-switch mb-2">
                                <input class="form-check-input" type="checkbox" role="switch" id="is_active" name="is_active" value="1" {{ old('is_active', '1') == '1' ? 'checked' : '' }}>
                                <label class="form-check-label fw-semibold text-dark" for="is_active">
                                    Status Produk Aktif (Tampil di katalog)
                                </label>
                            </div>
                        </div>

                        <!-- Kolom Kanan: Upload & Preview Gambar -->
                        <div class="col-md-5">
                            <label class="form-label fw-semibold text-dark d-flex align-items-center justify-content-between">
                                <span><i class="bi bi-image me-1 text-success"></i> Foto / Gambar Produk</span>
                                <span class="badge bg-light text-muted border">Opsional</span>
                            </label>
                            
                            <div class="card border rounded-4 p-3 bg-light text-center mb-3 shadow-none">
                                <!-- Area Preview Gambar & Dropzone -->
                                <div id="uploadDropzone" class="mb-3 position-relative d-flex flex-column align-items-center justify-content-center bg-white border rounded-3 overflow-hidden shadow-sm" 
                                     style="min-height: 240px; cursor: pointer; transition: all .2s ease; border: 2px dashed #bbf7d0 !important;">
                                    
                                    <img id="imagePreview" 
                                         src="" 
                                         alt="Preview Foto Produk" 
                                         class="w-100 h-100 object-fit-contain p-2" 
                                         style="display: none; max-height: 230px;">
                                    
                                    <div id="imagePlaceholder" class="text-center p-4">
                                        <div class="d-inline-flex align-items-center justify-content-center rounded-circle mb-2" 
                                             style="width: 68px; height: 68px; background: #dcfce7; color: #16a34a;">
                                            <i class="bi bi-cloud-arrow-up-fill fs-2"></i>
                                        </div>
                                        <h6 class="fw-bold text-dark mb-1">Klik atau Tarik Foto ke Sini</h6>
                                        <p class="text-muted small mb-0">Pratinjau foto akan otomatis langsung muncul di sini.</p>
                                    </div>

                                    <div id="imageBadgeSuccess" class="position-absolute top-0 end-0 m-2 badge bg-success shadow-sm" style="display: none;">
                                        <i class="bi bi-check-circle me-1"></i> Foto Siap
                                    </div>
                                </div>

                                <!-- Input File Gambar -->
                                <div class="mb-2">
                                    <input type="file" 
                                           name="image" 
                                           id="imageInput" 
                                           class="form-control @error('image') is-invalid @enderror" 
                                           accept="image/png, image/jpeg, image/jpg, image/webp, image/svg+xml">
                                    @error('image')
                                        <div class="invalid-feedback text-start">
                                            <i class="bi bi-exclamation-circle me-1"></i>{{ $message }}
                                        </div>
                                    @enderror
                                </div>

                                <button type="button" id="btnResetImage" class="btn btn-sm btn-outline-danger w-100" style="display: none;">
                                    <i class="bi bi-trash3 me-1"></i> Batalkan / Ganti Foto Lain
                                </button>

                                <div class="form-text small text-muted text-start mt-2">
                                    <ul class="mb-0 ps-3">
                                        <li>Format yang didukung: <strong>JPG, JPEG, PNG, WEBP, SVG</strong>.</li>
                                        <li>Ukuran file maksimal: <strong>2 MB</strong>.</li>
                                    </ul>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Tombol Aksi -->
                    <div class="d-flex align-items-center justify-content-between pt-4 mt-3 border-top">
                        <a href="{{ route('admin.products.index') }}" class="btn btn-outline-secondary d-inline-flex align-items-center gap-1">
                            <i class="bi bi-arrow-left"></i>
                            <span>Kembali ke Daftar</span>
                        </a>
                        <button type="submit" class="btn btn-primary d-inline-flex align-items-center gap-2 shadow-sm px-4">
                            <i class="bi bi-check-lg"></i>
                            <span>Simpan Produk</span>
                        </button>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
    document.addEventListener('DOMContentLoaded', function () {
        const nameInput = document.getElementById('name');
        const slugPreview = document.getElementById('slugPreview');
        const priceInput = document.getElementById('price');
        const pricePreview = document.getElementById('pricePreview');
        const imageInput = document.getElementById('imageInput');
        const imagePreview = document.getElementById('imagePreview');
        const imagePlaceholder = document.getElementById('imagePlaceholder');
        const btnResetImage = document.getElementById('btnResetImage');

        function generateSlug(text) {
            return text
                .toString()
                .toLowerCase()
                .trim()
                .replace(/\s+/g, '-')
                .replace(/[^\w\-]+/g, '')
                .replace(/\-\-+/g, '-')
                .replace(/^-+/, '')
                .replace(/-+$/, '');
        }

        function formatRupiah(number) {
            return new Intl.NumberFormat('id-ID', {
                style: 'currency',
                currency: 'IDR',
                minimumFractionDigits: 0
            }).format(number);
        }

        // Live Slug Preview
        if (nameInput && slugPreview) {
            if (nameInput.value) {
                slugPreview.textContent = generateSlug(nameInput.value) || '-';
            }
            nameInput.addEventListener('input', function () {
                slugPreview.textContent = generateSlug(this.value) || '-';
            });
        }

        // Live Price Preview
        if (priceInput && pricePreview) {
            if (priceInput.value) {
                pricePreview.textContent = 'Format Rupiah: ' + formatRupiah(priceInput.value);
            }
            priceInput.addEventListener('input', function () {
                const val = parseFloat(this.value) || 0;
                pricePreview.textContent = 'Format Rupiah: ' + formatRupiah(val);
            });
        }

        // Live Image Preview & Dropzone
        const dropzone = document.getElementById('uploadDropzone');
        const imageBadgeSuccess = document.getElementById('imageBadgeSuccess');

        if (dropzone && imageInput) {
            dropzone.addEventListener('click', function (e) {
                if (e.target !== imagePreview) {
                    imageInput.click();
                }
            });

            // Drag and drop events
            ['dragenter', 'dragover'].forEach(eventName => {
                dropzone.addEventListener(eventName, (e) => {
                    e.preventDefault();
                    e.stopPropagation();
                    dropzone.style.borderColor = '#16a34a';
                    dropzone.style.backgroundColor = '#f0fdf4';
                }, false);
            });

            ['dragleave', 'drop'].forEach(eventName => {
                dropzone.addEventListener(eventName, (e) => {
                    e.preventDefault();
                    e.stopPropagation();
                    dropzone.style.borderColor = '#bbf7d0';
                    dropzone.style.backgroundColor = '#ffffff';
                }, false);
            });

            dropzone.addEventListener('drop', (e) => {
                const dt = e.dataTransfer;
                if (dt && dt.files && dt.files.length > 0) {
                    imageInput.files = dt.files;
                    renderPreview(dt.files[0]);
                }
            });
        }

        function renderPreview(file) {
            if (file && file.type.startsWith('image/')) {
                const reader = new FileReader();
                reader.onload = function (e) {
                    imagePreview.src = e.target.result;
                    imagePreview.style.display = 'block';
                    if (imagePlaceholder) imagePlaceholder.style.display = 'none';
                    if (btnResetImage) btnResetImage.style.display = 'block';
                    if (imageBadgeSuccess) imageBadgeSuccess.style.display = 'inline-block';
                };
                reader.readAsDataURL(file);
            } else {
                resetImage();
            }
        }

        if (imageInput) {
            imageInput.addEventListener('change', function () {
                if (this.files && this.files[0]) {
                    renderPreview(this.files[0]);
                } else {
                    resetImage();
                }
            });
        }

        if (btnResetImage) {
            btnResetImage.addEventListener('click', function (e) {
                e.stopPropagation();
                resetImage();
            });
        }

        function resetImage() {
            if (imageInput) imageInput.value = '';
            if (imagePreview) {
                imagePreview.src = '';
                imagePreview.style.display = 'none';
            }
            if (imagePlaceholder) imagePlaceholder.style.display = 'block';
            if (btnResetImage) btnResetImage.style.display = 'none';
            if (imageBadgeSuccess) imageBadgeSuccess.style.display = 'none';
        }
    });
</script>
@endpush