@extends('layouts.app')

@section('title', 'Create NTTN Invoice')

@section('content')
<div class="container-fluid">
    <!-- Page Header -->
    <div class="row mb-4">
        <div class="col-12">
            <div class="d-flex justify-content-between align-items-center">
                <div>
                    <h1 class="h3 mb-0 text-gray-800">
                        <i class="fas fa-plus-circle mr-2"></i>Create NTTN Invoice
                    </h1>
                    <p class="text-muted">Create new NTTN invoice from sales invoice</p>
                </div>
                <div>
                    <a href="{{ route('reseller.nttn-invoices.index') }}" class="btn btn-secondary">
                        <i class="fas fa-arrow-left mr-2"></i>Back
                    </a>
                </div>
            </div>
        </div>
    </div>

    <form action="{{ route('reseller.nttn-invoices.store') }}" method="POST" id="nttnInvoiceForm">
        @csrf

        <div class="row">
            <!-- Sales Invoice Selection -->
            <div class="col-md-12 mb-4">
                <div class="card shadow">
                    <div class="card-header bg-primary text-white">
                        <h6 class="m-0 font-weight-bold">Select Sales Invoice</h6>
                    </div>
                    <div class="card-body">
                        <div class="form-group">
                            <label for="sales_invoice_id">Sales Invoice <span class="text-danger">*</span></label>
                            <select name="sales_invoice_id" id="sales_invoice_id" class="form-control" required>
                                <option value="">-- Select Sales Invoice --</option>
                                @foreach($salesInvoices as $invoice)
                                    <option value="{{ $invoice->id }}" 
                                            data-items="{{ json_encode($invoice->items) }}">
                                        {{ $invoice->invoice_no }} - 
                                        {{ $invoice->customer->name ?? $invoice->customer_name }} - 
                                        ৳ {{ number_format($invoice->invoice_amount, 2) }}
                                    </option>
                                @endforeach
                            </select>
                        </div>
                        <div class="form-group">
                            <label for="company_name">Company Name</label>
                            <input type="text" name="company_name" id="company_name" class="form-control" 
                                   placeholder="Enter company name">
                        </div>
                        <div class="form-group">
                            <label for="status">Status <span class="text-danger">*</span></label>
                            <select name="status" id="status" class="form-control" required>
                                <option value="pending">Pending</option>
                                <option value="approved">Approved</option>
                                <option value="rejected">Rejected</option>
                            </select>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Invoice Items -->
            <div class="col-md-12 mb-4">
                <div class="card shadow">
                    <div class="card-header bg-info text-white">
                        <h6 class="m-0 font-weight-bold">Invoice Items</h6>
                    </div>
                    <div class="card-body">
                        <div id="items-container">
                            <p class="text-muted">Please select a sales invoice to load items.</p>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class="row">
            <div class="col-12">
                <div class="card shadow">
                    <div class="card-body">
                        <div class="d-flex justify-content-between">
                            <div>
                                <strong>Total Cost Amount: </strong>
                                <span id="total-cost-amount" class="text-success h5">৳ 0.00</span>
                            </div>
                            <div>
                                <button type="submit" class="btn btn-primary">
                                    <i class="fas fa-save mr-2"></i>Create NTTN Invoice
                                </button>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </form>
</div>

<script>
document.addEventListener('DOMContentLoaded', function() {
    const salesInvoiceSelect = document.getElementById('sales_invoice_id');
    const itemsContainer = document.getElementById('items-container');
    const totalCostAmountSpan = document.getElementById('total-cost-amount');

    salesInvoiceSelect.addEventListener('change', function() {
        const selectedOption = this.options[this.selectedIndex];
        const items = JSON.parse(selectedOption.getAttribute('data-items') || '[]');

        if (items.length === 0) {
            itemsContainer.innerHTML = '<p class="text-muted">No items found for this invoice.</p>';
            updateTotal();
            return;
        }

        let html = `
            <div class="table-responsive">
                <table class="table table-bordered">
                    <thead class="thead-light">
                        <tr>
                            <th>Item Name</th>
                            <th>Description</th>
                            <th class="text-right">Cost Item Amount</th>
                            <th class="text-right">Quantity</th>
                            <th class="text-right">After Cost Amount</th>
                        </tr>
                    </thead>
                    <tbody>
        `;

        items.forEach((item, index) => {
            html += `
                <tr>
                    <td>
                        <input type="hidden" name="items[${index}][sales_invoice_item_id]" value="${item.id}">
                        <input type="hidden" name="items[${index}][item_name]" value="${item.item_name || ''}">
                        <strong>${item.item_name || 'N/A'}</strong>
                    </td>
                    <td>
                        <textarea name="items[${index}][description]" class="form-control form-control-sm" rows="2">${item.description || ''}</textarea>
                    </td>
                    <td>
                        <input type="number" name="items[${index}][cost_item_amount]" 
                               class="form-control form-control-sm item-cost" 
                               step="0.01" min="0" value="${item.total_amount || 0}" 
                               data-index="${index}" required>
                    </td>
                    <td>
                        <input type="number" name="items[${index}][quantity]" 
                               class="form-control form-control-sm item-quantity" 
                               step="0.01" min="0" value="${item.quantity || 0}" 
                               data-index="${index}" required>
                    </td>
                    <td>
                        <input type="number" name="items[${index}][after_cost_amount]" 
                               class="form-control form-control-sm item-after-cost" 
                               step="0.01" min="0" value="${item.total_amount || 0}" 
                               data-index="${index}" required>
                    </td>
                </tr>
            `;
        });

        html += `
                    </tbody>
                </table>
            </div>
        `;

        itemsContainer.innerHTML = html;

        // Add event listeners for calculation
        document.querySelectorAll('.item-cost, .item-quantity, .item-after-cost').forEach(input => {
            input.addEventListener('input', updateTotal);
        });

        updateTotal();
    });

    function updateTotal() {
        let total = 0;
        document.querySelectorAll('.item-after-cost').forEach(input => {
            total += parseFloat(input.value) || 0;
        });
        totalCostAmountSpan.textContent = '৳ ' + total.toFixed(2);
    }
});
</script>
@endsection