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

@php
    $noteTranslations = old('notes');

    if (! is_array($noteTranslations)) {
        $noteTranslations = $invoice->notes ? $invoice->getTranslations('notes') : [];
    }

    $formLines = old('lines', $invoice->lines->map(fn ($line) => [
        'item_id'          => $line->item_id,
        'description'      => $line->description ? $line->getTranslations('description') : [],
        'quantity'         => $line->quantity,
        'unit_price'       => $line->unit_price,
        'discount_percent' => $line->discount_percent,
        'tax_rate_id'      => $line->tax_rate_id,
        'line_total'       => $line->line_total,
    ])->values()->all());

    if (count($formLines) === 0) {
        $formLines = [[
            'item_id'          => '',
            'description'      => ['ar' => '', 'en' => ''],
            'quantity'         => '1',
            'unit_price'       => '0',
            'discount_percent' => '0',
            'tax_rate_id'      => '',
            'line_total'       => '0',
        ]];
    }
@endphp

@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.invoices.edit_title') }}</h1>
                </div>
                <div class="d-flex align-items-center gap-2 gap-lg-3">
                    <a href="{{ route('admin.dashboard.sales.invoices.show', $invoice) }}" class="btn btn-sm fw-bold btn-secondary">{{ trans('sales.invoices.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="InvoiceForm" action="{{ route('admin.dashboard.sales.invoices.update', $invoice) }}" method="POST" class="form">
                    @csrf
                    @method('PUT')

                    <div class="card mb-7">
                        <div class="card-header border-0 pt-6">
                            <div class="card-title">
                                <h2>{{ trans('sales.invoices.header_information') }}</h2>
                            </div>
                        </div>
                        <div class="card-body pt-0">
                            <div class="row g-5">
                                <div class="col-md-4">
                                    <label class="form-label">{{ trans('sales.invoices.invoice_number') }}</label>
                                    <input type="text" class="form-control" value="{{ $invoice->invoice_number }}" readonly>
                                </div>

                                <div class="col-md-4">
                                    <label class="required form-label">{{ trans('sales.invoices.invoice_date') }}</label>
                                    <input type="date" name="invoice_date" value="{{ old('invoice_date', $invoice->invoice_date?->format('Y-m-d')) }}" class="form-control @error('invoice_date') is-invalid @enderror">
                                    @error('invoice_date')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="form-label">{{ trans('sales.invoices.due_date') }}</label>
                                    <input type="date" name="due_date" value="{{ old('due_date', $invoice->due_date?->format('Y-m-d')) }}" class="form-control @error('due_date') is-invalid @enderror">
                                    @error('due_date')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="required form-label">{{ trans('sales.invoices.customer') }}</label>
                                    <select name="customer_id" data-control="select2" data-placeholder="{{ trans('sales.invoices.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', $invoice->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="form-label">{{ trans('sales.invoices.sales_order') }}</label>
                                    <select name="sales_order_id" data-control="select2" data-allow-clear="true" data-placeholder="{{ trans('sales.invoices.sales_order_placeholder') }}" class="form-select @error('sales_order_id') is-invalid @enderror">
                                        <option></option>
                                        @foreach($salesOrders as $salesOrder)
                                            <option value="{{ $salesOrder->id }}" @selected(old('sales_order_id', $invoice->sales_order_id) == $salesOrder->id)>{{ $salesOrder->order_number }}{{ $salesOrder->customer ? ' - '.$salesOrder->customer->name : '' }}</option>
                                        @endforeach
                                    </select>
                                    @error('sales_order_id')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="form-label">{{ trans('sales.invoices.branch') }}</label>
                                    <select name="branch_id" data-control="select2" data-allow-clear="true" data-placeholder="{{ trans('sales.invoices.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', $invoice->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="form-label">{{ trans('sales.invoices.currency_code') }}</label>
                                    <input type="text" name="currency_code" value="{{ old('currency_code', $invoice->currency_code) }}" maxlength="3" class="form-control @error('currency_code') is-invalid @enderror">
                                    @error('currency_code')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="form-label">{{ trans('sales.invoices.exchange_rate') }}</label>
                                    <input type="number" step="0.000001" min="0" name="exchange_rate" value="{{ old('exchange_rate', $invoice->exchange_rate) }}" class="form-control @error('exchange_rate') is-invalid @enderror">
                                    @error('exchange_rate')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="col-md-4">
                                    <label class="form-label">{{ trans('sales.invoices.status') }}</label>
                                    <input type="text" class="form-control" value="{{ trans('sales.invoices.'.$invoice->status) }}" readonly>
                                </div>

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

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

                                <div class="col-md-6">
                                    <label class="form-label">{{ trans('sales.invoices.notes_en') }}</label>
                                    <textarea name="notes[en]" class="form-control @error('notes.en') is-invalid @enderror" rows="3">{{ data_get($noteTranslations, '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.invoices.lines_information') }}</h2>
                            </div>
                            <button type="button" class="btn btn-sm btn-light-primary" data-add-line>{{ trans('sales.invoices.add_line') }}</button>
                        </div>
                        <div class="card-body pt-0">
                            @error('lines')
                                <div class="alert alert-danger">{{ $message }}</div>
                            @enderror

                            <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.invoices.item') }}</th>
                                        <th>{{ trans('sales.invoices.description_ar') }}</th>
                                        <th>{{ trans('sales.invoices.description_en') }}</th>
                                        <th>{{ trans('sales.invoices.quantity') }}</th>
                                        <th>{{ trans('sales.invoices.unit_price') }}</th>
                                        <th>{{ trans('sales.invoices.discount_percent_line') }}</th>
                                        <th>{{ trans('sales.invoices.tax_rate') }}</th>
                                        <th>{{ trans('sales.invoices.line_total') }}</th>
                                        <th></th>
                                    </tr>
                                    </thead>
                                    <tbody data-lines-body data-next-index="{{ count($formLines) }}">
                                    @foreach($formLines as $index => $line)
                                        <tr data-line-row>
                                            <td class="min-w-200px">
                                                <select name="lines[{{ $index }}][item_id]" class="form-select @error("lines.$index.item_id") is-invalid @enderror">
                                                    <option value="">{{ trans('sales.invoices.item_placeholder') }}</option>
                                                    @foreach($items as $item)
                                                        <option value="{{ $item->id }}" @selected(($line['item_id'] ?? '') == $item->id)>{{ $item->code }} - {{ $item->name }}</option>
                                                    @endforeach
                                                </select>
                                                @error("lines.$index.item_id")
                                                    <div class="invalid-feedback d-block">{{ $message }}</div>
                                                @enderror
                                            </td>
                                            <td class="min-w-150px">
                                                <input type="text" name="lines[{{ $index }}][description][ar]" value="{{ data_get($line, 'description.ar') }}" class="form-control @error("lines.$index.description.ar") is-invalid @enderror">
                                                @error("lines.$index.description.ar")
                                                    <div class="invalid-feedback d-block">{{ $message }}</div>
                                                @enderror
                                            </td>
                                            <td class="min-w-150px">
                                                <input type="text" name="lines[{{ $index }}][description][en]" value="{{ data_get($line, 'description.en') }}" class="form-control @error("lines.$index.description.en") is-invalid @enderror">
                                                @error("lines.$index.description.en")
                                                    <div class="invalid-feedback d-block">{{ $message }}</div>
                                                @enderror
                                            </td>
                                            <td class="min-w-100px">
                                                <input type="number" step="0.0001" min="0.0001" name="lines[{{ $index }}][quantity]" value="{{ $line['quantity'] ?? '' }}" class="form-control @error("lines.$index.quantity") is-invalid @enderror" data-quantity>
                                                @error("lines.$index.quantity")
                                                    <div class="invalid-feedback d-block">{{ $message }}</div>
                                                @enderror
                                            </td>
                                            <td class="min-w-100px">
                                                <input type="number" step="0.0001" min="0" name="lines[{{ $index }}][unit_price]" value="{{ $line['unit_price'] ?? '' }}" class="form-control @error("lines.$index.unit_price") is-invalid @enderror" data-unit-price>
                                                @error("lines.$index.unit_price")
                                                    <div class="invalid-feedback d-block">{{ $message }}</div>
                                                @enderror
                                            </td>
                                            <td class="min-w-90px">
                                                <input type="number" step="0.01" min="0" max="100" name="lines[{{ $index }}][discount_percent]" value="{{ $line['discount_percent'] ?? '0' }}" class="form-control @error("lines.$index.discount_percent") is-invalid @enderror" data-discount-percent>
                                                @error("lines.$index.discount_percent")
                                                    <div class="invalid-feedback d-block">{{ $message }}</div>
                                                @enderror
                                            </td>
                                            <td class="min-w-150px">
                                                <select name="lines[{{ $index }}][tax_rate_id]" class="form-select @error("lines.$index.tax_rate_id") is-invalid @enderror" data-tax-rate-select>
                                                    <option value="" data-rate="0">{{ trans('sales.invoices.tax_rate_placeholder') }}</option>
                                                    @foreach($taxRates as $taxRate)
                                                        <option value="{{ $taxRate->id }}" data-rate="{{ $taxRate->rate }}" @selected(($line['tax_rate_id'] ?? '') == $taxRate->id)>{{ $taxRate->name }} ({{ $taxRate->rate }}%)</option>
                                                    @endforeach
                                                </select>
                                                @error("lines.$index.tax_rate_id")
                                                    <div class="invalid-feedback d-block">{{ $message }}</div>
                                                @enderror
                                            </td>
                                            <td class="min-w-100px">
                                                <input type="number" step="0.01" name="lines[{{ $index }}][line_total]" value="{{ $line['line_total'] ?? '' }}" class="form-control" data-line-total readonly>
                                            </td>
                                            <td>
                                                <button type="button" class="btn btn-sm btn-light-danger" data-remove-line>{{ trans('sales.invoices.remove_line') }}</button>
                                            </td>
                                        </tr>
                                    @endforeach
                                    </tbody>
                                </table>
                            </div>

                            <div class="row justify-content-end mt-5">
                                <div class="col-md-4">
                                    <table class="table table-bordered text-end">
                                        <tr>
                                            <td class="fw-semibold text-muted w-50">{{ trans('sales.invoices.subtotal') }}</td>
                                            <td><span data-order-subtotal>{{ number_format((float) $invoice->subtotal, 2) }}</span></td>
                                        </tr>
                                        <tr>
                                            <td class="fw-semibold text-muted">{{ trans('sales.invoices.tax_amount') }}</td>
                                            <td><span data-order-tax>{{ number_format((float) $invoice->tax_amount, 2) }}</span></td>
                                        </tr>
                                        <tr class="fw-bold fs-5">
                                            <td>{{ trans('sales.invoices.total_amount') }}</td>
                                            <td><span data-order-total>{{ number_format((float) $invoice->total_amount, 2) }}</span></td>
                                        </tr>
                                    </table>
                                </div>
                            </div>
                        </div>
                    </div>

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

    <script type="text/template" id="invoice-line-template">
        <tr data-line-row>
            <td class="min-w-200px">
                <select name="lines[__INDEX__][item_id]" class="form-select">
                    <option value="">{{ trans('sales.invoices.item_placeholder') }}</option>
                    @foreach($items as $item)
                        <option value="{{ $item->id }}">{{ $item->code }} - {{ $item->name }}</option>
                    @endforeach
                </select>
            </td>
            <td class="min-w-150px">
                <input type="text" name="lines[__INDEX__][description][ar]" class="form-control">
            </td>
            <td class="min-w-150px">
                <input type="text" name="lines[__INDEX__][description][en]" class="form-control">
            </td>
            <td class="min-w-100px">
                <input type="number" step="0.0001" min="0.0001" name="lines[__INDEX__][quantity]" value="1" class="form-control" data-quantity>
            </td>
            <td class="min-w-100px">
                <input type="number" step="0.0001" min="0" name="lines[__INDEX__][unit_price]" value="0" class="form-control" data-unit-price>
            </td>
            <td class="min-w-90px">
                <input type="number" step="0.01" min="0" max="100" name="lines[__INDEX__][discount_percent]" value="0" class="form-control" data-discount-percent>
            </td>
            <td class="min-w-150px">
                <select name="lines[__INDEX__][tax_rate_id]" class="form-select" data-tax-rate-select>
                    <option value="" data-rate="0">{{ trans('sales.invoices.tax_rate_placeholder') }}</option>
                    @foreach($taxRates as $taxRate)
                        <option value="{{ $taxRate->id }}" data-rate="{{ $taxRate->rate }}">{{ $taxRate->name }} ({{ $taxRate->rate }}%)</option>
                    @endforeach
                </select>
            </td>
            <td class="min-w-100px">
                <input type="number" step="0.01" name="lines[__INDEX__][line_total]" value="0" class="form-control" data-line-total readonly>
            </td>
            <td>
                <button type="button" class="btn btn-sm btn-light-danger" data-remove-line>{{ trans('sales.invoices.remove_line') }}</button>
            </td>
        </tr>
    </script>

    <script>
        document.addEventListener('DOMContentLoaded', function () {
            const tbody = document.querySelector('[data-lines-body]');
            const addLineButton = document.querySelector('[data-add-line]');
            const template = document.getElementById('invoice-line-template').innerHTML;
            let lineIndex = parseInt(tbody.dataset.nextIndex || '0', 10);

            function getLineValues(row) {
                const qty = parseFloat(row.querySelector('[data-quantity]')?.value || '0');
                const price = parseFloat(row.querySelector('[data-unit-price]')?.value || '0');
                const discPct = parseFloat(row.querySelector('[data-discount-percent]')?.value || '0');
                const taxSelect = row.querySelector('[data-tax-rate-select]');
                const taxRate = taxSelect ? parseFloat(taxSelect.selectedOptions[0]?.dataset.rate || '0') : 0;
                const lineSubtotal = qty * price;
                const discAmt = lineSubtotal * (discPct / 100);
                const afterDisc = lineSubtotal - discAmt;
                const taxAmt = afterDisc * (taxRate / 100);
                return { lineSubtotal, taxAmt, lineTotal: afterDisc + taxAmt };
            }

            function updateLineTotal(row) {
                const { lineTotal } = getLineValues(row);
                const totalField = row.querySelector('[data-line-total]');
                if (totalField) totalField.value = lineTotal.toFixed(2);
                updateOrderTotals();
            }

            function updateOrderTotals() {
                let subtotal = 0, totalTax = 0;

                tbody.querySelectorAll('[data-line-row]').forEach(function (row) {
                    const v = getLineValues(row);
                    subtotal += v.lineSubtotal;
                    totalTax += v.taxAmt;
                });

                const fmt = v => (isNaN(v) ? 0 : v).toFixed(2);
                document.querySelector('[data-order-subtotal]').textContent = fmt(subtotal);
                document.querySelector('[data-order-tax]').textContent = fmt(totalTax);
                document.querySelector('[data-order-total]').textContent = fmt(subtotal + totalTax);
            }

            addLineButton.addEventListener('click', function () {
                const temp = document.createElement('tbody');
                temp.innerHTML = template.replace(/__INDEX__/g, lineIndex).trim();
                const row = temp.firstElementChild;
                tbody.appendChild(row);
                updateLineTotal(row);
                lineIndex += 1;
            });

            tbody.addEventListener('click', function (event) {
                const removeButton = event.target.closest('[data-remove-line]');
                if (!removeButton) return;
                const row = removeButton.closest('tr');
                if (row) { row.remove(); updateOrderTotals(); }
            });

            tbody.addEventListener('input', function (event) {
                if (!event.target.matches('[data-quantity],[data-unit-price],[data-discount-percent]')) return;
                const row = event.target.closest('tr');
                if (row) updateLineTotal(row);
            });

            tbody.addEventListener('change', function (event) {
                if (!event.target.matches('[data-tax-rate-select]')) return;
                const row = event.target.closest('tr');
                if (row) updateLineTotal(row);
            });

            tbody.querySelectorAll('[data-line-row]').forEach(updateLineTotal);
        });
    </script>
@endsection

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