@extends('layouts.buyer')

@section('title', 'Keranjang Belanja')

@section('content')

{{-- Breadcrumb Navigasi --}}
<nav aria-label="breadcrumb" class="mb-4">
    <ol class="breadcrumb">
        <li class="breadcrumb-item">
            @auth
                <a href="{{ route('toko') }}" class="text-decoration-none text-success">
                    <i class="bi bi-shop me-1"></i>Halaman Toko
                </a>
            @else
                <a href="{{ url('/') }}" class="text-decoration-none text-success">
                    <i class="bi bi-house me-1"></i>Beranda
                </a>
            @endauth
        </li>
        <li class="breadcrumb-item active" aria-current="page">Keranjang Belanja</li>
    </ol>
</nav>

{{-- Header Halaman --}}
<div class="d-flex flex-wrap justify-content-between align-items-center mb-4 gap-2">
    <div>
        <h1 class="h3 fw-bold text-dark mb-1">
            <i class="bi bi-cart3 text-success me-2"></i>Keranjang Belanja
        </h1>
        <p class="text-muted small mb-0">
            Kelola produk pilihan Anda yang tersimpan sementara di Session browser.
        </p>
    </div>
    @if(!empty($cart))
        <div>
            <form action="{{ route('cart.clear') }}" method="POST" class="d-inline"
                  onsubmit="return confirm('Apakah Anda yakin ingin mengosongkan semua produk dari keranjang?')">
                @csrf
                @method('DELETE')
                <button type="submit" class="btn btn-sm btn-outline-danger d-inline-flex align-items-center gap-1 shadow-sm">
                    <i class="bi bi-trash3"></i>
                    <span>Kosongkan Keranjang</span>
                </button>
            </form>
        </div>
    @endif
</div>

{{-- Pengecekan Apakah Keranjang Kosong --}}
@if(empty($cart))
    <div class="card border-0 shadow-sm py-5 text-center my-4" style="border-radius: 1rem;">
        <div class="card-body py-5">
            <div class="rounded-circle bg-success-subtle text-success d-inline-flex align-items-center justify-content-center p-4 mb-3" style="width: 90px; height: 90px;">
                <i class="bi bi-cart-x display-4"></i>
            </div>
            <h3 class="h4 fw-bold text-dark mb-2">Keranjang Belanja Anda Kosong</h3>
            <p class="text-muted mb-4" style="max-width: 480px; margin: 0 auto;">
                Belum ada produk yang ditambahkan ke keranjang belanja Anda. Jelajahi katalog toko kami dan temukan produk terbaik untuk Anda.
            </p>
            <div class="d-flex justify-content-center gap-2">
                @auth
                    <a href="{{ route('toko') }}" class="btn btn-success px-4 py-2 fw-semibold shadow-sm">
                        <i class="bi bi-bag-plus me-1"></i> Mulai Belanja Sekarang
                    </a>
                @else
                    <a href="{{ url('/') }}" class="btn btn-success px-4 py-2 fw-semibold shadow-sm">
                        <i class="bi bi-bag-plus me-1"></i> Mulai Belanja Sekarang
                    </a>
                @endauth
            </div>
        </div>
    </div>
@else
    {{-- Tampilan Grid Keranjang (Kiri: Daftar Produk, Kanan: Ringkasan Total) --}}
    <div class="row g-4">

        {{-- ====== KOLOM KIRI: DAFTAR PRODUK DALAM KERANJANG ====== --}}
        <div class="col-lg-8">
            <div class="card border-0 shadow-sm overflow-hidden" style="border-radius: 1rem;">
                <div class="card-header bg-white py-3 border-bottom d-flex justify-content-between align-items-center">
                    <h5 class="card-title mb-0 fw-bold fs-6">
                        <i class="bi bi-box-seam text-success me-1"></i>
                        Daftar Produk ({{ count($cart) }} jenis produk, {{ $totalItems }} total unit)
                    </h5>
                    <span class="badge bg-success-subtle text-success border border-success-subtle">
                        Tersimpan di Session
                    </span>
                </div>

                <div class="table-responsive">
                    <table class="table table-hover align-middle mb-0">
                        <thead class="table-light">
                            <tr class="text-muted small text-uppercase" style="letter-spacing: 0.05em;">
                                <th scope="col" style="min-width: 260px;" class="ps-3 py-3">Produk</th>
                                <th scope="col" class="text-center" style="min-width: 130px;">Harga Satuan</th>
                                <th scope="col" class="text-center" style="min-width: 150px;">Jumlah (Qty)</th>
                                <th scope="col" class="text-end" style="min-width: 140px;">Subtotal</th>
                                <th scope="col" class="text-center pe-3" style="width: 70px;">Aksi</th>
                            </tr>
                        </thead>
                        <tbody>
                            @foreach($cart as $id => $item)
                                <tr>
                                    {{-- 1. Info Produk (Gambar, Nama, Kategori) --}}
                                    <td class="ps-3 py-3">
                                        <div class="d-flex align-items-center gap-3">
                                            {{-- Gambar Produk --}}
                                            <div class="rounded-3 overflow-hidden bg-light border flex-shrink-0 d-flex align-items-center justify-content-center"
                                                 style="width: 70px; height: 70px;">
                                                @if(!empty($item['image']))
                                                    <img src="{{ asset('storage/' . $item['image']) }}"
                                                         alt="{{ $item['name'] }}"
                                                         class="w-100 h-100"
                                                         style="object-fit: cover;">
                                                @else
                                                    <i class="bi bi-image text-secondary opacity-50 fs-3"></i>
                                                @endif
                                            </div>

                                            {{-- Detail Nama & Link --}}
                                            <div class="overflow-hidden">
                                                <a href="{{ route('produk.show', $item['slug'] ?? $item['id']) }}"
                                                   class="text-decoration-none text-dark fw-bold text-truncate d-block mb-1"
                                                   title="{{ $item['name'] }}"
                                                   style="max-width: 220px;">
                                                    {{ $item['name'] }}
                                                </a>
                                                <span class="badge bg-secondary-subtle text-secondary small" style="font-size: 0.725rem;">
                                                    <i class="bi bi-tag-fill me-1"></i>{{ $item['category'] ?? 'Umum' }}
                                                </span>
                                                <div class="text-muted small mt-1" style="font-size: 0.75rem;">
                                                    Stok: <strong>{{ $item['stock'] }}</strong>
                                                </div>
                                            </div>
                                        </div>
                                    </td>

                                    {{-- 2. Harga Satuan --}}
                                    <td class="text-center text-muted fw-semibold">
                                        Rp {{ number_format($item['price'], 0, ',', '.') }}
                                    </td>

                                    {{-- 3. Mengubah Kuantitas (Quantity) --}}
                                    <td class="text-center">
                                        <div class="d-inline-flex flex-column align-items-center">
                                            <div class="input-group input-group-sm" style="max-width: 125px;">
                                                {{-- Tombol Kurangi Qty (-) --}}
                                                <form action="{{ route('cart.update', $id) }}" method="POST" class="d-inline">
                                                    @csrf
                                                    @method('PATCH')
                                                    <input type="hidden" name="action" value="decrement">
                                                    <button type="submit"
                                                            class="btn btn-outline-secondary"
                                                            title="Kurangi kuantitas"
                                                            {{ $item['quantity'] <= 1 ? 'disabled' : '' }}>
                                                        <i class="bi bi-dash"></i>
                                                    </button>
                                                </form>

                                                {{-- Input Langsung Qty --}}
                                                <form action="{{ route('cart.update', $id) }}" method="POST" class="d-inline flex-grow-1" id="form-qty-{{ $id }}">
                                                    @csrf
                                                    @method('PATCH')
                                                    <input type="number"
                                                           name="quantity"
                                                           value="{{ $item['quantity'] }}"
                                                           min="1"
                                                           max="{{ $item['stock'] }}"
                                                           class="form-control text-center fw-bold px-1"
                                                           onchange="this.form.submit()"
                                                           title="Ubah angka lalu enter">
                                                </form>

                                                {{-- Tombol Tambah Qty (+) --}}
                                                <form action="{{ route('cart.update', $id) }}" method="POST" class="d-inline">
                                                    @csrf
                                                    @method('PATCH')
                                                    <input type="hidden" name="action" value="increment">
                                                    <button type="submit"
                                                            class="btn btn-outline-secondary"
                                                            title="Tambah kuantitas"
                                                            {{ $item['quantity'] >= $item['stock'] ? 'disabled' : '' }}>
                                                        <i class="bi bi-plus"></i>
                                                    </button>
                                                </form>
                                            </div>
                                            @if($item['quantity'] >= $item['stock'])
                                                <span class="text-danger small mt-1" style="font-size: 0.7rem;">Maksimal stok</span>
                                            @endif
                                        </div>
                                    </td>

                                    {{-- 4. Subtotal (Harga x Kuantitas) --}}
                                    <td class="text-end fw-bold text-success fs-6">
                                        Rp {{ number_format($item['subtotal'] ?? ($item['price'] * $item['quantity']), 0, ',', '.') }}
                                    </td>

                                    {{-- 5. Tombol Hapus Produk dari Cart --}}
                                    <td class="text-center pe-3">
                                        <form action="{{ route('cart.remove', $id) }}" method="POST"
                                              onsubmit="return confirm('Hapus \'{{ addslashes($item['name']) }}\' dari keranjang?')">
                                            @csrf
                                            @method('DELETE')
                                            <button type="submit"
                                                    class="btn btn-sm btn-outline-danger"
                                                    title="Hapus produk ini">
                                                <i class="bi bi-trash"></i>
                                            </button>
                                        </form>
                                    </td>
                                </tr>
                            @endforeach
                        </tbody>
                    </table>
                </div>

                {{-- Footer Tabel: Tombol Kembali Belanja --}}
                <div class="card-footer bg-white border-top py-3 d-flex flex-wrap justify-content-between align-items-center gap-2">
                    @auth
                        <a href="{{ route('toko') }}" class="btn btn-outline-success d-inline-flex align-items-center gap-2">
                            <i class="bi bi-arrow-left"></i>
                            <span>Lanjut Belanja Produk Lain</span>
                        </a>
                    @else
                        <a href="{{ url('/') }}" class="btn btn-outline-success d-inline-flex align-items-center gap-2">
                            <i class="bi bi-arrow-left"></i>
                            <span>Lanjut Belanja Produk Lain</span>
                        </a>
                    @endauth

                    <span class="text-muted small">
                        <i class="bi bi-info-circle me-1"></i>Kuantitas otomatis diperbarui saat menekan tombol <strong>+</strong> atau <strong>-</strong>.
                    </span>
                </div>
            </div>
        </div>

        {{-- ====== KOLOM KANAN: RINGKASAN TOTAL BELANJA ====== --}}
        <div class="col-lg-4">
            <div class="card border-0 shadow-sm sticky-top" style="border-radius: 1rem; top: 90px;">
                <div class="card-header bg-success text-white py-3" style="border-top-left-radius: 1rem; border-top-right-radius: 1rem;">
                    <h5 class="card-title mb-0 fw-bold fs-6 d-flex align-items-center justify-content-between">
                        <span><i class="bi bi-receipt me-2"></i>Ringkasan Belanja</span>
                        <span class="badge bg-white text-success rounded-pill">{{ count($cart) }} Jenis</span>
                    </h5>
                </div>

                <div class="card-body p-4">
                    {{-- Rincian Perhitungan --}}
                    <div class="d-flex justify-content-between text-muted mb-2 small">
                        <span>Total Kuantitas:</span>
                        <strong class="text-dark">{{ $totalItems }} unit</strong>
                    </div>

                    <div class="d-flex justify-content-between text-muted mb-2 small">
                        <span>Jumlah Produk:</span>
                        <strong class="text-dark">{{ count($cart) }} item</strong>
                    </div>

                    <hr class="my-3 opacity-25">

                    {{-- Perhitungan Subtotal Kumulatif --}}
                    <div class="d-flex justify-content-between text-muted mb-3">
                        <span class="fw-semibold">Subtotal Produk:</span>
                        <span class="fw-bold text-dark">Rp {{ number_format($total, 0, ',', '.') }}</span>
                    </div>

                    {{-- Grand Total --}}
                    <div class="p-3 rounded-3 mb-4" style="background-color: #f0fdf4; border: 1px solid #bbf7d0;">
                        <div class="text-success-emphasis small fw-bold text-uppercase mb-1" style="letter-spacing: 0.05em;">
                            Total Tagihan
                        </div>
                        <div class="display-6 fw-bold text-success" id="cart-grand-total">
                            Rp {{ number_format($total, 0, ',', '.') }}
                        </div>
                    </div>

                    {{-- Informasi Cara Kerja Session --}}
                    <div class="alert alert-light border small text-secondary mb-4 p-3" style="border-radius: 8px;">
                        <div class="fw-bold text-dark mb-1 d-flex align-items-center gap-1">
                            <i class="bi bi-shield-check text-success"></i> Laravel Session Active
                        </div>
                        <p class="mb-0" style="font-size: 0.8rem; line-height: 1.45;">
                            Data keranjang ini disimpan secara instan di dalam <strong>Session Laravel</strong> (tanpa tabel cart di database), sehingga aman, cepat, dan spesifik untuk sesi browser Anda saat ini.
                        </p>
                    </div>

                    {{-- Tombol Lanjut ke Checkout --}}
                    @if(auth()->check() && auth()->user()->isAdmin())
                        <div class="alert alert-warning small mb-3 border-0 shadow-sm" style="border-radius: 0.5rem;">
                            <i class="bi bi-info-circle-fill me-1 text-warning"></i> Anda saat ini masuk sebagai <strong>Administrator</strong>. Proses checkout pesanan hanya dapat dilakukan menggunakan akun dengan role <strong>Buyer</strong>.
                        </div>
                        <button class="btn btn-secondary btn-lg w-100 fw-bold mb-2" disabled>
                            <i class="bi bi-lock me-1"></i> Checkout Khusus Buyer
                        </button>
                    @else
                        <a href="{{ route('checkout.index') }}"
                           class="btn btn-success btn-lg w-100 fw-bold shadow-sm d-flex align-items-center justify-content-center gap-2 mb-2"
                           id="btn-checkout">
                            <i class="bi bi-credit-card-2-front fs-5"></i>
                            <span>Lanjut ke Checkout</span>
                        </a>
                    @endif

                    <p class="text-center text-muted small mb-0" style="font-size: 0.775rem;">
                        <i class="bi bi-shield-check text-success me-1"></i>Transaksi Aman dengan Database Transaction
                    </p>
                </div>
            </div>
        </div>

    </div>
@endif

@endsection