@extends('layouts.app')

@section('title', 'Tambah Pembelian Stok - Hotel Management System')
@section('page-title', 'Tambah Pembelian Stok')

@section('content')
<div class="row">
    <div class="col-12">
        <div class="card shadow mb-4">
            <div class="card-header py-3">
                <h6 class="m-0 font-weight-bold text-primary">Form Tambah Pembelian Stok</h6>
            </div>
            <div class="card-body">
                <form action="{{ route('stock-purchases.store') }}" method="POST">
                    @csrf
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="purchase_number" class="form-label">No. Pembelian</label>
                                <input type="text" class="form-control" id="purchase_number" 
                                       value="{{ $purchaseNumber }}" readonly>
                                <div class="form-text">Nomor pembelian akan dibuat otomatis</div>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="purchase_date" class="form-label">Tanggal Pembelian <span class="text-danger">*</span></label>
                                <input type="date" class="form-control @error('purchase_date') is-invalid @enderror" 
                                       id="purchase_date" name="purchase_date" value="{{ old('purchase_date', date('Y-m-d')) }}" required>
                                @error('purchase_date')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                    </div>

                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="stock_item_id" class="form-label">Item Stok <span class="text-danger">*</span></label>
                                <select class="form-select @error('stock_item_id') is-invalid @enderror" 
                                        id="stock_item_id" name="stock_item_id" required>
                                    <option value="">Pilih Item Stok</option>
                                    @foreach($stockItems as $item)
                                        <option value="{{ $item->id }}" 
                                                data-unit="{{ $item->unit }}" 
                                                data-purchase-price="{{ $item->purchase_price }}"
                                                {{ old('stock_item_id') == $item->id ? 'selected' : '' }}>
                                            {{ $item->name }} ({{ $item->category }}) - Stok: {{ $item->current_stock }} {{ $item->unit }}
                                        </option>
                                    @endforeach
                                </select>
                                @error('stock_item_id')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="supplier" class="form-label">Supplier</label>
                                <input type="text" class="form-control @error('supplier') is-invalid @enderror" 
                                       id="supplier" name="supplier" value="{{ old('supplier') }}" 
                                       placeholder="Nama supplier">
                                @error('supplier')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                    </div>

                    <div class="row">
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label for="quantity" class="form-label">Jumlah <span class="text-danger">*</span></label>
                                <div class="input-group">
                                    <input type="number" class="form-control @error('quantity') is-invalid @enderror" 
                                           id="quantity" name="quantity" value="{{ old('quantity') }}" 
                                           min="1" required>
                                    <span class="input-group-text" id="unit-display">pcs</span>
                                </div>
                                @error('quantity')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label for="unit_price" class="form-label">Harga Satuan <span class="text-danger">*</span></label>
                                <div class="input-group">
                                    <span class="input-group-text">Rp</span>
                                    <input type="number" class="form-control @error('unit_price') is-invalid @enderror" 
                                           id="unit_price" name="unit_price" value="{{ old('unit_price') }}" 
                                           min="0" step="100" required>
                                </div>
                                @error('unit_price')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label for="total_price" class="form-label">Total Harga</label>
                                <div class="input-group">
                                    <span class="input-group-text">Rp</span>
                                    <input type="text" class="form-control" id="total_price" readonly>
                                </div>
                                <div class="form-text">Total akan dihitung otomatis</div>
                            </div>
                        </div>
                    </div>

                    <div class="mb-3">
                        <label for="notes" class="form-label">Catatan</label>
                        <textarea class="form-control @error('notes') is-invalid @enderror" 
                                  id="notes" name="notes" rows="3" placeholder="Catatan tambahan untuk pembelian ini">{{ old('notes') }}</textarea>
                        @error('notes')
                            <div class="invalid-feedback">{{ $message }}</div>
                        @enderror
                    </div>

                    <div class="alert alert-info">
                        <i class="fas fa-info-circle me-2"></i>
                        <strong>Informasi:</strong> Setelah disimpan, pembelian akan otomatis diproses yang akan:
                        <ul class="mb-0 mt-2">
                            <li>Menambahkan stok ke item yang dipilih</li>
                            <li>Membuat record pengeluaran (expense)</li>
                            <li>Mencatat pergerakan stok</li>
                        </ul>
                    </div>

                    <div class="d-flex justify-content-end">
                        <a href="{{ route('stock-purchases.index') }}" class="btn btn-secondary me-2">Batal</a>
                        <button type="submit" class="btn btn-primary">Simpan & Proses Pembelian</button>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>

<script>
document.addEventListener('DOMContentLoaded', function() {
    const stockItemSelect = document.getElementById('stock_item_id');
    const unitDisplay = document.getElementById('unit-display');
    const unitPriceInput = document.getElementById('unit_price');
    const quantityInput = document.getElementById('quantity');
    const totalPriceInput = document.getElementById('total_price');

    // Update unit display when stock item changes
    stockItemSelect.addEventListener('change', function() {
        const selectedOption = this.options[this.selectedIndex];
        if (selectedOption.value) {
            const unit = selectedOption.getAttribute('data-unit');
            const purchasePrice = selectedOption.getAttribute('data-purchase-price');
            
            unitDisplay.textContent = unit;
            unitPriceInput.value = purchasePrice;
            calculateTotal();
        } else {
            unitDisplay.textContent = 'pcs';
            unitPriceInput.value = '';
            totalPriceInput.value = '';
        }
    });

    // Calculate total price
    function calculateTotal() {
        const quantity = parseFloat(quantityInput.value) || 0;
        const unitPrice = parseFloat(unitPriceInput.value) || 0;
        const total = quantity * unitPrice;
        
        if (total > 0) {
            totalPriceInput.value = total.toLocaleString('id-ID');
        } else {
            totalPriceInput.value = '';
        }
    }

    // Add event listeners for calculation
    quantityInput.addEventListener('input', calculateTotal);
    unitPriceInput.addEventListener('input', calculateTotal);

    // Initialize calculation if values are already set
    if (stockItemSelect.value) {
        const selectedOption = stockItemSelect.options[stockItemSelect.selectedIndex];
        const unit = selectedOption.getAttribute('data-unit');
        unitDisplay.textContent = unit;
        calculateTotal();
    }
});
</script>
@endsection