@section('heading', 'Edit Stock Opname')
@extends('layouts.app')

@section('content')
    <section class="content-header">
        <div class="container-fluid">
            <div class="row mb-2">
                <div class="col-sm-6">
                    <h1>Edit Stock Opname</h1>
                </div>
                <div class="col-sm-6">
                    <ol class="breadcrumb float-sm-right">
                        <li class="breadcrumb-item"><a href="{{ route('home') }}">Home</a></li>
                        <li class="breadcrumb-item"><a href="{{ route('stock-opname') }}">Stock Opname</a></li>
                        <li class="breadcrumb-item active">Edit</li>
                    </ol>
                </div>
            </div>
        </div>
    </section>

    <section class="content">
        <div class="container-fluid">

            <form action="{{ route('stock-opname.update', $stockOpname->id) }}" method="POST">
                @csrf
                @method('PUT')

                <div class="row">

                    <!-- ================= LEFT ================= -->
                    <div class="col-md-8">
                        <div class="card">
                            <div class="card-header">
                                <h3 class="card-title">Detail Produk</h3>
                            </div>

                            <div class="card-body">
                                <div class="table-responsive">
                                    <table class="table table-bordered">
                                        <thead>
                                            <tr>
                                                <th>Produk</th>
                                                <th>Satuan</th>
                                                <th>Stok Sistem</th>
                                                <th>Stok Fisik</th>
                                                <th>Selisih</th>
                                                <th>Catatan</th>
                                            </tr>
                                        </thead>

                                        <tbody id="detailBody">
                                            @foreach($stockOpname->stockOpnameDetails as $i => $detail)
                                            @php
                                            $diff = $detail->physical_stock - $detail->system_stock;
                                            @endphp
                                            <tr>
                                                <td>
                                                    {{ $detail->product->name }}
                                                    <input type="hidden" name="details[{{ $i }}][product_id]" value="{{ $detail->product_id }}">
                                                    <input type="hidden" name="details[{{ $i }}][system_stock]" value="{{ $detail->system_stock }}" class="system-stock">
                                                </td>

                                                <td class="text-center">
                                                    {{ $detail->product->unit }}
                                                </td>

                                                <td class="text-center">
                                                    <span class="badge badge-info">{{ $detail->system_stock }}</span>
                                                </td>

                                                <td>
                                                    <input type="number" name="details[{{ $i }}][physical_stock]" class="form-control physical-input" value="{{ $detail->physical_stock }}" min="0">
                                                </td>

                                                <td class="text-center">
                                                    <strong class="difference-text" data-system="{{ $detail->system_stock }}">
                                                        {{ $diff }}
                                                    </strong>
                                                </td>

                                                <td>
                                                    <input type="text" name="details[{{ $i }}][notes]" class="form-control" value="{{ $detail->notes }}">
                                                </td>
                                            </tr>
                                            @endforeach
                                        </tbody>

                                    </table>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- ================= RIGHT ================= -->
                    <div class="col-md-4">
                        <div class="card">
                            <div class="card-header">
                                <h3 class="card-title">Informasi Stock Opname</h3>
                            </div>

                            <div class="card-body">

                                <div class="form-group">
                                    <label>No Opname</label>
                                    <input type="text" class="form-control" value="{{ $stockOpname->opname_number }}" readonly>
                                </div>

                                <div class="form-group">
                                    <label>Cabang</label>
                                    <input type="text" class="form-control" value="{{ $stockOpname->branch->name }}" readonly>
                                    <input type="hidden" name="branch_id" value="{{ $stockOpname->branch_id }}">
                                </div>

                                <div class="form-group">
                                    <label>Tanggal Opname</label>
                                    <input type="text" class="form-control" value="{{ \Carbon\Carbon::parse($stockOpname->opname_date)->format('d/m/Y') }}" readonly>
                                    <input type="hidden" name="opname_date" value="{{ $stockOpname->opname_date }}">
                                </div>

                                <div class="form-group">
                                    <label>Catatan</label>
                                    <textarea class="form-control" readonly>{{ $stockOpname->notes }}</textarea>
                                    <input type="hidden" name="notes" value="{{ $stockOpname->notes }}">
                                </div>

                                <hr>

                                <div class="form-group">
                                    <label>Total Item Selisih</label>
                                    <h4 id="totalDifference">0 item</h4>
                                </div>

                            </div>

                            <div class="card-footer">
                                <button type="submit" class="btn btn-success btn-block">
                                    <i class="fas fa-save"></i> Update Stock Opname
                                </button>
                                <a href="{{ route('stock-opname') }}" class="btn btn-secondary btn-block">
                                    Kembali
                                </a>
                            </div>
                        </div>
                    </div>

                </div>
            </form>

        </div>
    </section>
@endsection

<!-- ================= HITUNG SUBTOTAL & TOTAL ================= -->
<script>
    function updateTotalDifference() {
        let itemsWithDifference = 0;

        document.querySelectorAll('#detailBody tr').forEach(row => {
            const systemStock = row.querySelector('.system-stock');
            const physicalStock = row.querySelector('.physical-input');

            if (!systemStock || !physicalStock) return;

            const system = parseFloat(systemStock.value) || 0;
            const physical = parseFloat(physicalStock.value) || 0;

            if (system !== physical) {
                itemsWithDifference++;
            }
        });

        document.getElementById('totalDifference').textContent =
            itemsWithDifference + ' item';
    }

    document.addEventListener('DOMContentLoaded', function () {

        // hitung awal saat halaman dibuka
        updateTotalDifference();

        // update saat stok fisik diubah
        document.querySelectorAll('.physical-input').forEach(input => {
            input.addEventListener('input', function () {
                updateTotalDifference();
            });
        });
    });
</script>