@extends('admin.admin_dashboard')

@section('customcss')
    <style>
        /* ==================== Invoice Header ==================== */
        .invoice-header {
            background-color: #0071BB;
            color: #fff;
            padding: 10px;
            font-weight: bold;
        }

        /* ==================== Table Captions ==================== */
        .table-caption {
            background-color: #FBF9BA;
            color: #000;
            padding: 5px 10px;
            font-weight: bold;
        }

        /* ==================== Table Headers ==================== */
        .table thead th {
            background-color: #FBDC81;
            color: #000;
        }

        .section-title {
            font-weight: bold;
            margin-top: 15px;
            margin-bottom: 5px;
        }
    </style>
@endsection

@section('admin')
    <div class="content-body">
        <div class="container-fluid">
            <div class="p-2" style="font-size:12px;">

                {{-- ১ম অংশ: Invoice No --}}
                <div class="invoice-header mb-2">
                    Invoice No: {{ $payment->invoice_no }}
                </div>

                {{-- ২য় অংশ: Receipt Information --}}
                <div class="table-caption">Receipt Information</div>
                <table class="table table-sm table-bordered">
                    <thead>
                        <tr>
                            <th>Invoice No</th>
                            <th>Student Name</th>
                            <th>Received By</th>
                            <th>Date</th>
                            <th>Total</th>
                            <th>Discount</th>
                            <th>Adjusted</th>
                            <th>Paid</th>
                            <th>Previous Due Collection</th>
                            <th>Due</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr>
                            <td class="dark">{{ $payment->invoice_no }}</td>
                            <td class="dark">{{ $payment->student->student_name_english }}</td>
                            <td class="dark">{{ $payment->user?->name ?? 'N/A' }}</td>
                            <td class="dark">{{ \Carbon\Carbon::parse($payment->payment_date)->format('d-m-Y') }}</td>

                            {{-- safe defaults with null-coalesce --}}
                            <td class="dark">{{ number_format($totalFee ?? 0) }}</td>
                            @if ($totalWaver!=0 || $totalWaver!=null)
                                <td class="dark">{{ number_format($totalWaver ?? 0) }}</td>
                            @else
                               <td></td>
                            @endif
                            <td class="dark">{{ number_format($totalAdjusted ?? 0) }}</td>

                            {{-- controller supplies $totalPaid (not $totalPaidThisTxn) --}}
                            <td class="dark">{{ number_format($totalPaid ?? 0) }}</td>

                            {{-- previous adjustments (if controller passed it) --}}
                            <td class="dark">
                                @if ($previousPaidAdjustments!=0 || $previousPaidAdjustments!=null)
                                    {{ number_format($previousPaidAdjustments ?? 0) }}
                                @else

                                @endif
                                
                            </td>

                            <td class="dark">
                                @if ($totalDueAfter!=0 || $totalDueAfter!=null)
                                    {{ number_format($totalDueAfter ?? 0) }}
                                @else
                                @endif
                                
                            </td>
                        </tr>
                    </tbody>
                </table>

                {{-- ৩য় অংশ: Receipt Detail Information --}}
                <div class="table-caption mt-3">Receipt Detail Information</div>
                <table class="table table-sm table-bordered ">
                    <thead>
                        <tr>
                            <th>Fee Remarks</th>
                            <th>Fee Type</th>
                            <th>Fee Amount</th>
                            <th>Discount</th>
                            <th>Paid This Invoice</th>
                            <th>Due After This Payment</th>
                        </tr>
                    </thead>
                    <tbody >
                        @foreach($items as $item)
                            @php
                                // ensure fields exist (controller should provide effective_payable & paid_this_txn)
                                $feeAmount = $item->fee_amount ?? ($item->fee->amount ?? 0);
                                $waver = $item->waver ?? ($item->fee->waver_amount ?? 0);
                                $paidThis = $item->paid_this_txn ?? 0;
                                $effectivePayable = $item->effective_payable ?? max(0, $feeAmount - $waver);

                                // total paid up to and including this invoice for this fee (same logic as printReceipt)
                                $totalPaidBefore = \App\Models\PaymentItem::where('fee_id', $item->fee->id)
                                    ->where('payment_id', '<=', $payment->id)
                                    ->sum('payment_amount_orginal');

                                // due after considering all payments up-to-current-invoice
                                $dueAfter = max(0, $effectivePayable - $totalPaidBefore);
                            @endphp
                            <tr >
                                @if ($item->item_due == null || $item->item_due == 0 )
                                <td>{{ $item->fee->note ?? '-' }}</td>
                                <td>{{ $item->fee->fee_type ?? '-' }}</td>
                                <td>{{ number_format($feeAmount) }}</td>
                                <td>{{ number_format($waver) }}</td>
                                <td>{{ number_format($paidThis) }}</td>
                                <td class="text-center">{{ number_format($dueAfter) }}</td>
                                @endif
                            </tr>
                        @endforeach
                    </tbody>
                    <tfoot>
                        @if ($isCollectDue !=0)
                            <tr>
                                <td colspan="4">Due Collection <br>
                                                (This Item has been generated on the previous
                                                dues 
                                                against Receipt: {{ $previousCombined }})
                                </td>
                                <td>{{$previousPaidAdjustments ?? ''}}</td>
                                <td class="text-center">{{ $totalDueAfter ?? '' }}</td>
                            </tr>
                        @endif
                        <tr class="table-light">
                            <th colspan="2">Total</th>
                            {{-- safe defaults with null-coalesce --}}
                            <th class="dark">{{ number_format($totalFee ?? 0) }}</th>
                            @if ($totalWaver!=0 || $totalWaver!=null)
                                <th class="dark">{{ number_format($totalWaver ?? 0) }}</th>
                            @else
                               <th>0</th>
                            @endif
                            <th class="dark">{{ number_format($totalPaid ?? 0) }}</th>

                            <th class="dark text-center" >
                                @if ($totalDueAfter!=0 || $totalDueAfter!=null)
                                    {{ number_format($totalDueAfter ?? 0) }}
                                @else
                                0
                                @endif
                                
                            </th>
                        </tr>
                        
                    </tfoot>


                </table>

            </div>
        </div>
    </div>
@endsection