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

@php
    $formLines = old('lines', $purchaseOrder->lines->map(fn($l) => [
        'item_id'     => $l->item_id,
        'description' => ['ar' => $l->getTranslation('description', 'ar'), 'en' => $l->getTranslation('description', 'en')],
        'quantity'    => $l->quantity,
        'unit_cost'   => $l->unit_cost,
    ])->toArray());
@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('inventory.purchase_orders.edit_title') }} — {{ $purchaseOrder->po_number }}</h1>
                </div>
                <div class="d-flex align-items-center gap-2 gap-lg-3">
                    <a href="{{ route('admin.dashboard.inventory.purchase-orders.show', $purchaseOrder) }}" class="btn btn-sm fw-bold btn-secondary">{{ trans('inventory.purchase_orders.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="POForm" action="{{ route('admin.dashboard.inventory.purchase-orders.update', $purchaseOrder) }}" 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('inventory.purchase_orders.header_information') }}</h2></div>
                        </div>
                        <div class="card-body pt-0">
                            <div class="row g-5">
                                <div class="col-md-3">
                                    <label class="required form-label">{{ trans('inventory.purchase_orders.po_date') }}</label>
                                    <input type="date" name="po_date" value="{{ old('po_date', $purchaseOrder->po_date->format('Y-m-d')) }}" class="form-control @error('po_date') is-invalid @enderror">
                                    @error('po_date')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                </div>
                                <div class="col-md-3">
                                    <label class="form-label">{{ trans('inventory.purchase_orders.expected_delivery_date') }}</label>
                                    <input type="date" name="expected_delivery_date" value="{{ old('expected_delivery_date', $purchaseOrder->expected_delivery_date?->format('Y-m-d')) }}" class="form-control @error('expected_delivery_date') is-invalid @enderror">
                                    @error('expected_delivery_date')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                </div>
                                <div class="col-md-3">
                                    <label class="required form-label">{{ trans('inventory.purchase_orders.supplier') }}</label>
                                    <select name="supplier_id" data-control="select2" data-placeholder="{{ trans('inventory.purchase_orders.supplier_placeholder') }}" class="form-select @error('supplier_id') is-invalid @enderror">
                                        <option value=""></option>
                                        @foreach($suppliers as $supplier)
                                            <option value="{{ $supplier->id }}" @selected(old('supplier_id', $purchaseOrder->supplier_id) == $supplier->id)>{{ $supplier->code }} - {{ $supplier->name }}</option>
                                        @endforeach
                                    </select>
                                    @error('supplier_id')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                </div>
                                <div class="col-md-3">
                                    <label class="form-label">{{ trans('inventory.purchase_orders.branch') }}</label>
                                    <select name="branch_id" data-control="select2" data-placeholder="{{ trans('inventory.purchase_orders.branch_placeholder') }}" class="form-select @error('branch_id') is-invalid @enderror">
                                        <option value=""></option>
                                        @foreach($branches as $branch)
                                            <option value="{{ $branch->id }}" @selected(old('branch_id', $purchaseOrder->branch_id) == $branch->id)>{{ $branch->name }}</option>
                                        @endforeach
                                    </select>
                                    @error('branch_id')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                </div>
                                <div class="col-md-6">
                                    <label class="form-label">{{ trans('inventory.purchase_orders.notes_ar') }}</label>
                                    <textarea name="notes[ar]" class="form-control @error('notes.ar') is-invalid @enderror" rows="2">{{ old('notes.ar', $purchaseOrder->getTranslation('notes', 'ar')) }}</textarea>
                                    @error('notes.ar')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                </div>
                                <div class="col-md-6">
                                    <label class="form-label">{{ trans('inventory.purchase_orders.notes_en') }}</label>
                                    <textarea name="notes[en]" class="form-control @error('notes.en') is-invalid @enderror" rows="2">{{ old('notes.en', $purchaseOrder->getTranslation('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('inventory.purchase_orders.lines_information') }}</h2></div>
                            <button type="button" class="btn btn-sm btn-light-primary" data-add-line>{{ trans('inventory.purchase_orders.add_line') }}</button>
                        </div>
                        <div class="card-body pt-0">
                            @error('lines')<div class="alert alert-danger">{{ $message }}</div>@enderror
                            <div class="table-responsive">
                                <table class="table align-middle table-row-dashed fs-6 gy-5">
                                    <thead>
                                    <tr class="text-start text-muted fw-bold fs-7 text-uppercase gs-0">
                                        <th>{{ trans('inventory.purchase_orders.item') }}</th>
                                        <th>{{ trans('inventory.purchase_orders.description_ar') }}</th>
                                        <th>{{ trans('inventory.purchase_orders.quantity') }}</th>
                                        <th>{{ trans('inventory.purchase_orders.unit_cost') }}</th>
                                        <th>{{ trans('inventory.purchase_orders.line_total') }}</th>
                                        <th></th>
                                    </tr>
                                    </thead>
                                    <tbody data-lines-body data-next-index="{{ count($formLines) }}">
                                    @foreach($formLines as $index => $line)
                                        <tr data-line-row>
                                            <td class="min-w-225px">
                                                <select name="lines[{{ $index }}][item_id]" data-control="select2" class="form-select @error("lines.$index.item_id") is-invalid @enderror">
                                                    <option value=""></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-175px">
                                                <input type="text" name="lines[{{ $index }}][description][ar]" value="{{ data_get($line, 'description.ar') }}" class="form-control">
                                            </td>
                                            <td class="min-w-125px">
                                                <input type="number" step="0.0001" min="0.0001" name="lines[{{ $index }}][quantity]" value="{{ $line['quantity'] ?? '1' }}" class="form-control" data-quantity>
                                                @error("lines.$index.quantity")<div class="invalid-feedback d-block">{{ $message }}</div>@enderror
                                            </td>
                                            <td class="min-w-125px">
                                                <input type="number" step="0.0001" min="0" name="lines[{{ $index }}][unit_cost]" value="{{ $line['unit_cost'] ?? '0' }}" class="form-control" data-unit-cost>
                                                @error("lines.$index.unit_cost")<div class="invalid-feedback d-block">{{ $message }}</div>@enderror
                                            </td>
                                            <td class="min-w-125px">
                                                <input type="number" step="0.01" name="lines[{{ $index }}][line_total]" value="{{ isset($line['quantity'], $line['unit_cost']) ? round($line['quantity'] * $line['unit_cost'], 2) : '0' }}" class="form-control" data-line-total readonly>
                                            </td>
                                            <td>
                                                <button type="button" class="btn btn-sm btn-light-danger" data-remove-line>{{ trans('inventory.purchase_orders.remove_line') }}</button>
                                            </td>
                                        </tr>
                                    @endforeach
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>

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

    <script type="text/template" id="po-line-template">
        <tr data-line-row>
            <td class="min-w-225px">
                <select name="lines[__INDEX__][item_id]" data-control="select2" class="form-select">
                    <option value=""></option>
                    @foreach($items as $item)
                        <option value="{{ $item->id }}">{{ $item->code }} - {{ $item->name }}</option>
                    @endforeach
                </select>
            </td>
            <td class="min-w-175px">
                <input type="text" name="lines[__INDEX__][description][ar]" class="form-control">
            </td>
            <td class="min-w-125px">
                <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-125px">
                <input type="number" step="0.0001" min="0" name="lines[__INDEX__][unit_cost]" value="0" class="form-control" data-unit-cost>
            </td>
            <td class="min-w-125px">
                <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('inventory.purchase_orders.remove_line') }}</button>
            </td>
        </tr>
    </script>

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

            function calcTotal(row) {
                const qty = parseFloat(row.querySelector('[data-quantity]')?.value || '0');
                const cost = parseFloat(row.querySelector('[data-unit-cost]')?.value || '0');
                const f = row.querySelector('[data-line-total]');
                if (f) f.value = (qty * cost).toFixed(2);
            }

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

            tbody.addEventListener('click', function (e) {
                const btn = e.target.closest('[data-remove-line]');
                if (btn) btn.closest('tr')?.remove();
            });

            tbody.addEventListener('input', function (e) {
                if (e.target.matches('[data-quantity],[data-unit-cost]')) {
                    calcTotal(e.target.closest('tr'));
                }
            });

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

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