@extends('dashboard.admin.layouts.master')

@section('content')
    <div class="d-flex flex-column flex-column-fluid">
        <div id="kt_app_toolbar" class="app-toolbar py-3 py-lg-6">
            <div id="kt_app_toolbar_container" class="app-container container-xxl d-flex flex-stack">
                <div class="page-title d-flex flex-column justify-content-center flex-wrap me-3">
                    <h1 class="page-heading d-flex text-dark fw-bold fs-3 flex-column justify-content-center my-0">{{ trans('sales.returns.create_title') }}</h1>
                </div>
                <div class="d-flex align-items-center gap-2 gap-lg-3">
                    <a href="{{ route('admin.dashboard.sales.returns.index') }}" class="btn btn-sm fw-bold btn-secondary">{{ trans('sales.returns.back') }}</a>
                </div>
            </div>
        </div>

        <div id="kt_app_content" class="app-content flex-column-fluid">
            <div id="kt_app_content_container" class="app-container container-xxl">
                @if($errors->any())
                    <div class="alert alert-danger mb-7">
                        <ul class="mb-0 ps-6">
                            @foreach($errors->all() as $error)
                                <li>{{ $error }}</li>
                            @endforeach
                        </ul>
                    </div>
                @endif

                <form id="ReturnForm" action="{{ route('admin.dashboard.sales.returns.store') }}" method="POST" class="form">
                    @csrf

                    <div class="card mb-7">
                        <div class="card-header border-0 pt-6">
                            <div class="card-title"><h2>{{ trans('sales.returns.create_title') }}</h2></div>
                        </div>
                        <div class="card-body pt-0">
                            <div class="row g-5">
                                <div class="col-md-4">
                                    <label class="required form-label">{{ trans('sales.returns.return_date') }}</label>
                                    <input type="date" name="return_date" value="{{ old('return_date') }}" class="form-control @error('return_date') is-invalid @enderror">
                                    @error('return_date') <div class="invalid-feedback">{{ $message }}</div> @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="required form-label">{{ trans('sales.returns.customer') }}</label>
                                    <select name="customer_id" id="customer_id" data-control="select2" data-placeholder="{{ trans('sales.returns.customer_placeholder') }}" class="form-select @error('customer_id') is-invalid @enderror">
                                        <option></option>
                                        @foreach($customers as $customer)
                                            <option value="{{ $customer->id }}" @selected(old('customer_id') == $customer->id)>{{ $customer->code }} - {{ $customer->name }}</option>
                                        @endforeach
                                    </select>
                                    @error('customer_id') <div class="invalid-feedback">{{ $message }}</div> @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="required form-label">{{ trans('sales.returns.invoice') }}</label>
                                    <select name="original_invoice_id" id="original_invoice_id" data-control="select2" data-placeholder="{{ trans('sales.returns.invoice_placeholder') }}" class="form-select @error('original_invoice_id') is-invalid @enderror">
                                        <option></option>
                                    </select>
                                    @error('original_invoice_id') <div class="invalid-feedback">{{ $message }}</div> @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="form-label">{{ trans('sales.returns.branch') }}</label>
                                    <select name="branch_id" data-control="select2" data-allow-clear="true" data-placeholder="{{ trans('sales.returns.branch_placeholder') }}" class="form-select @error('branch_id') is-invalid @enderror">
                                        <option></option>
                                        @foreach($branches as $branch)
                                            <option value="{{ $branch->id }}" @selected(old('branch_id') == $branch->id)>{{ $branch->name }}</option>
                                        @endforeach
                                    </select>
                                    @error('branch_id') <div class="invalid-feedback">{{ $message }}</div> @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="required form-label">{{ trans('sales.returns.reason') }}</label>
                                    <input type="text" name="reason" value="{{ old('reason') }}" class="form-control @error('reason') is-invalid @enderror">
                                    @error('reason') <div class="invalid-feedback">{{ $message }}</div> @enderror
                                </div>

                                <div class="col-md-4 d-flex align-items-end">
                                    <div class="form-check form-switch">
                                        <input type="hidden" name="restocked" value="0">
                                        <input class="form-check-input" type="checkbox" id="restocked" name="restocked" value="1" @checked(old('restocked'))>
                                        <label class="form-check-label" for="restocked">{{ trans('sales.returns.restocked') }}</label>
                                    </div>
                                </div>

                                <div class="col-md-4" id="warehouse_row" style="display:none">
                                    <label class="form-label">{{ trans('sales.returns.warehouse') }}</label>
                                    <select name="warehouse_id" data-control="select2" data-allow-clear="true" data-placeholder="{{ trans('sales.returns.warehouse_placeholder') }}" class="form-select @error('warehouse_id') is-invalid @enderror">
                                        <option></option>
                                        @foreach($warehouses as $warehouse)
                                            <option value="{{ $warehouse->id }}" @selected(old('warehouse_id') == $warehouse->id)>{{ $warehouse->name }}</option>
                                        @endforeach
                                    </select>
                                    @error('warehouse_id') <div class="invalid-feedback">{{ $message }}</div> @enderror
                                </div>

                                <div class="col-md-6">
                                    <label class="form-label">{{ trans('sales.returns.notes_ar') }}</label>
                                    <textarea name="notes[ar]" class="form-control @error('notes.ar') is-invalid @enderror" rows="3">{{ old('notes.ar') }}</textarea>
                                    @error('notes.ar') <div class="invalid-feedback">{{ $message }}</div> @enderror
                                </div>

                                <div class="col-md-6">
                                    <label class="form-label">{{ trans('sales.returns.notes_en') }}</label>
                                    <textarea name="notes[en]" class="form-control @error('notes.en') is-invalid @enderror" rows="3">{{ old('notes.en') }}</textarea>
                                    @error('notes.en') <div class="invalid-feedback">{{ $message }}</div> @enderror
                                </div>
                            </div>
                        </div>
                    </div>

                    <div class="card mb-7">
                        <div class="card-header border-0 pt-6 d-flex justify-content-between align-items-center">
                            <div class="card-title"><h2>{{ trans('sales.returns.lines_title') }}</h2></div>
                            <button type="button" id="btn-load-lines" class="btn btn-sm btn-light-info">{{ trans('sales.returns.load_lines') }}</button>
                        </div>
                        <div class="card-body pt-0">
                            <div class="table-responsive">
                                <table class="table align-middle table-row-dashed fs-6 gy-5">
                                    <thead>
                                    <tr class="text-start text-muted fw-bold fs-7 text-uppercase gs-0">
                                        <th>{{ trans('sales.returns.item') }}</th>
                                        <th>{{ trans('sales.returns.original_qty') }}</th>
                                        <th>{{ trans('sales.returns.unit_price') }}</th>
                                        <th>{{ trans('sales.returns.return_qty') }}</th>
                                        <th>{{ trans('sales.returns.tax_amount') }}</th>
                                        <th>{{ trans('sales.returns.line_total') }}</th>
                                        <th>{{ trans('sales.returns.restocked_line') }}</th>
                                    </tr>
                                    </thead>
                                    <tbody id="lines-body">
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>

                    <div class="d-flex justify-content-end">
                        <button type="submit" class="btn btn-primary">{{ trans('sales.returns.save') }}</button>
                    </div>
                </form>
            </div>
        </div>
    </div>

    <script>
    document.addEventListener('DOMContentLoaded', function () {
        const customerSel = document.getElementById('customer_id');
        const invoiceSel  = document.getElementById('original_invoice_id');
        const loadBtn     = document.getElementById('btn-load-lines');
        const tbody       = document.getElementById('lines-body');
        const restockedCb = document.getElementById('restocked');
        const warehouseRow= document.getElementById('warehouse_row');
        let lineIndex     = 0;

        restockedCb.addEventListener('change', function () {
            warehouseRow.style.display = this.checked ? '' : 'none';
        });

        // Customer → load invoices into second select
        customerSel.addEventListener('change', function () {
            const id = this.value;
            if (!id) { clearInvoiceOptions(); return; }

            fetch('{{ route('admin.dashboard.sales.returns.customer-invoices') }}?customer_id=' + id, {
                headers: { 'X-Requested-With': 'XMLHttpRequest' }
            })
            .then(r => r.json())
            .then(function (invoices) {
                clearInvoiceOptions();
                invoices.forEach(function (inv) {
                    const opt = document.createElement('option');
                    opt.value = inv.id;
                    opt.textContent = inv.invoice_number + '  (' + inv.invoice_date + ')';
                    invoiceSel.appendChild(opt);
                });
                if (window.KTComponents) KTComponents.init();
            });
        });

        function clearInvoiceOptions() {
            while (invoiceSel.options.length > 1) invoiceSel.remove(1);
            tbody.innerHTML = '';
            lineIndex = 0;
        }

        // Load invoice lines
        loadBtn.addEventListener('click', function () {
            const invoiceId = invoiceSel.value;
            if (!invoiceId) { alert('{{ trans('sales.returns.invoice_placeholder') }}'); return; }

            fetch('{{ route('admin.dashboard.sales.returns.invoice-lines') }}?invoice_id=' + invoiceId, {
                headers: { 'X-Requested-With': 'XMLHttpRequest' }
            })
            .then(r => r.json())
            .then(function (lines) {
                tbody.innerHTML = '';
                lineIndex = 0;
                lines.forEach(function (line) {
                    const tax = parseFloat(line.tax_amount) || 0;
                    const tr  = document.createElement('tr');
                    tr.innerHTML = `
                        <td>
                            <input type="hidden" name="lines[${lineIndex}][item_id]" value="${line.item_id}">
                            <input type="hidden" name="lines[${lineIndex}][unit_price]" value="${line.unit_price}">
                            <input type="hidden" name="lines[${lineIndex}][original_invoice_line_id]" value="${line.id}">
                            ${line.item_code} — ${line.item_name || ''}
                        </td>
                        <td>${parseFloat(line.quantity).toFixed(4)}</td>
                        <td>${parseFloat(line.unit_price).toFixed(2)}</td>
                        <td>
                            <input type="number" step="0.0001" min="0.0001" max="${line.quantity}"
                                   name="lines[${lineIndex}][quantity]"
                                   value="${parseFloat(line.quantity).toFixed(4)}"
                                   class="form-control form-control-sm w-120px"
                                   data-price="${line.unit_price}"
                                   data-tax-unit="${tax / line.quantity}"
                                   onchange="recalcLine(this)">
                        </td>
                        <td class="tax-cell">${tax.toFixed(2)}
                            <input type="hidden" name="lines[${lineIndex}][tax_amount]" class="tax-input" value="${tax.toFixed(2)}">
                        </td>
                        <td class="total-cell">${parseFloat(line.line_total).toFixed(2)}</td>
                        <td>
                            <input type="hidden" name="lines[${lineIndex}][restocked]" value="0">
                            <input type="checkbox" name="lines[${lineIndex}][restocked]" value="1" class="form-check-input">
                        </td>`;
                    tbody.appendChild(tr);
                    lineIndex++;
                });
            });
        });

        window.recalcLine = function (qtyInput) {
            const qty     = parseFloat(qtyInput.value) || 0;
            const price   = parseFloat(qtyInput.dataset.price) || 0;
            const taxUnit = parseFloat(qtyInput.dataset.taxUnit) || 0;
            const tr      = qtyInput.closest('tr');
            const taxAmt  = round2(qty * taxUnit);
            const total   = round2(qty * price + taxAmt);
            tr.querySelector('.tax-cell').childNodes[0].nodeValue = taxAmt.toFixed(2) + '\n';
            tr.querySelector('.tax-input').value = taxAmt.toFixed(2);
            tr.querySelector('.total-cell').textContent = total.toFixed(2);
        };

        function round2(v) { return Math.round(v * 100) / 100; }
    });
    </script>
@endsection

@section('js')
    <script type="text/javascript" src="{{ asset('vendor/jsvalidation/js/jsvalidation.js') }}"></script>
    {!! JsValidator::formRequest('App\Http\Requests\Admin\Sales\StoreSalesReturnRequest', '#ReturnForm') !!}
@endsection