@extends('layouts.partials.master')

@section('title', 'Histórico de Preços')

@push('styles')
    <link href="{{asset('assets/css/forms.css')}}" rel="stylesheet" type="text/css">
    <link href="{{asset('assets/css/tables.css')}}" rel="stylesheet" type="text/css">
    <link href="{{asset('assets/css/cards.css')}}" rel="stylesheet" type="text/css">
@endpush

@section('content')
<nav aria-label="breadcrumb">
    {!! $breadcrumbs !!}
</nav>
    @include('layouts.components.section-title', ['title' => 'Histórico de Preços'])

    <div class="card py-4 px-4">
        <form action="{{ route('prd_product_price_history.index') }}" method="GET">
            <div class="row mb-3">
                <div class="col">
                    <input type="text" name="product_name" class="form-control" placeholder="Nome do produto" value="{{ request('product_name') }}">
                </div>
            </div>
            <div class="row">
                <div class="col text-end">
                    <button type="submit" class="btn btn-sm btn-primary">Filtrar <i class="fa-light fa-filters"></i></button>
                    <button type="button" class="btn btn-sm btn-primary" id="clearFormButton">Limpar <i class="fa-light fa-xmark"></i></button>
                </div>
            </div>
        </form>
    </div>

    @include('layouts.components.alerts')

    <div class="d-flex justify-content-between align-items-center mt-3 mb-3">
        <div>
            @if ($history instanceof \Illuminate\Pagination\LengthAwarePaginator)
                <a href="{{ route('prd_product_price_history.all') }}" class="btn btn-sm btn-primary mt-5 mb-4">Ver todos <i class="fa-light fa-list-ul"></i></a>
            @else
                <a href="{{ route('prd_product_price_history.index') }}" class="btn btn-sm btn-primary mt-5 mb-4">Paginar <i class="fa-light fa-list-ol"></i></a>
            @endif
        </div>

        <div class="d-flex align-items-center gap-2">
            <div id="perPageContainer">
                @include('layouts.components.per-page', ['subject' => $history, 'route' => 'prd_product_price_history'])
            </div>
            <div id="backToTableContainer" style="display: none;">
                <a href="{{ url()->full() }}" id="backToTableBtn" class="btn btn-sm btn-primary">Voltar <i class="fa-light fa-left-from-line"></i></a>
            </div>
        </div>
    </div>

    
    <div id="price-history-chart-wrapper" class="card py-4 px-4" style="display: none;">
        <div class="row">
            <div class="col-12">
                <canvas id="priceHistoryChart" height="120"></canvas>
            </div>
        </div>
        @if (!request('product_name'))
            <div class="text-muted fs-12 mt-2">Sugestão: filtre por um produto para um gráfico mais claro.</div>
        @endif
    </div>


    <div class="d-flex flex-column gap-4 mb-2">
        <div class="row g-4">
            <div class="col-12">
                <div class="card" id="price-history-table-wrapper">
                    <div class="table-responsive">
                        <table class="table table-borderless fs-12">
                            <thead>
                                <tr>
                                    <th class="text-left">ID</th>
                                    <th class="text-left">Nome do produto</th>
                                    <th class="text-left">SKU da variante</th>
                                    <th class="text-left">Preço</th>
                                    <th class="text-left">Data de alteração</th>
                                    <th class="text-left">Gráfico</th>
                                </tr>
                            </thead>
                            <tbody>
                                @forelse($history as $item)
                                    @php
                                        $rowLabel = optional($item->variant)->sku
                                            ? (trim(((optional($item->product)->name) ?? 'Produto') . ' | ' . (optional($item->variant)->sku)))
                                            : (optional($item->product)->name ?? 'Produto');
                                    @endphp
                                    <tr data-label="{{ $rowLabel }}" data-product-id="{{ $item->product_id }}" data-variant-id="{{ $item->variant_id ?? '' }}">
                                        <td class="text-left text-muted">{{ $item->id }}</td>
                                        <td class="text-left">{{ $item->product->name }}</td>
                                        <td class="text-left">
                                            @if(optional($item->variant)->sku)
                                                {{ optional($item->variant)->sku }}
                                            @else
                                                -
                                            @endif
                                        </td>
                                        <td class="text-left">@formatEuro($item->price)</td>
                                        <td class="text-left">
                                            {{ $item->created_at->format('d/m/Y') }}
                                        </td>
                                        <td class="text-left">
                                            <button type="button" class="btn btn-sm btn-outline-primary btn-view-chart" data-label="{{ $rowLabel }}" data-product-id="{{ $item->product_id }}" data-variant-id="{{ $item->variant_id ?? '' }}">
                                                Ver gráfico <i class="fa-light fa-chart-line"></i>
                                            </button>
                                        </td>
                                    </tr>
                                @empty
                                    <tr>
                                        <td colspan="6" class="text-center text-muted">
                                            <p class="m-0 mt-2 d-flex align-items-center justify-content-center">{{ __('translations.no_results') }}</p>
                                        </td>
                                    </tr>
                                @endforelse
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>
    @include('layouts.components.pagination', ['subject' => $history])
@endsection

@push('scripts')
    @vite('resources/js/charts.js')
    <script type="module">
        const productPlusVariant = @json($chartHistory);

        // Group strictly by product_id + variant_id
        const grouped = {};
        productPlusVariant.forEach(product => {
            const key = `${product.product_id}:${product.variant_id ?? 'null'}`;
            if (!grouped[key]) grouped[key] = { label: product.label, data: [] };
            grouped[key].data.push({ x: product.x, y: product.y });
        });
        const palette = ['#008DAF', '#000000', '#A9A9A9', '#2E7D32', '#6A1B9A', '#EF6C00'];
        const datasetsByKey = {};
        Object.keys(grouped).forEach((key, idx) => {
            datasetsByKey[key] = {
                label: grouped[key].label,
                color: palette[idx % palette.length],
                data: grouped[key].data.sort((a,b) => new Date(a.x) - new Date(b.x)),
            };
        });

        const tableWrapper = document.getElementById('price-history-table-wrapper');
        const chartWrapper = document.getElementById('price-history-chart-wrapper');
        const chartCanvas = document.getElementById('priceHistoryChart');
        const btnBack = document.getElementById('backToTableBtn');
        const backContainer = document.getElementById('backToTableContainer');
        const perPageContainer = document.getElementById('perPageContainer');
        const tableEl = tableWrapper?.querySelector('table');

        let chartInstance = null;

        const showTable = () => {
            tableWrapper.style.display = '';
            chartWrapper.style.display = 'none';
            if (backContainer) backContainer.style.display = 'none';
            if (perPageContainer) perPageContainer.style.display = '';
            if (chartInstance) {
                chartInstance.destroy();
                chartInstance = null;
            }
        };
        const showChart = () => {
            tableWrapper.style.display = 'none';
            chartWrapper.style.display = '';
            if (backContainer) backContainer.style.display = '';
            if (perPageContainer) perPageContainer.style.display = 'none';
        };

        showTable();

        //click  "Ver gráfico" buttons
        tableEl?.addEventListener('click', (e) => {
            const btn = e.target.closest('.btn-view-chart');
            if (!btn) return;
            const productId = btn.getAttribute('data-product-id');
            const variantId = btn.getAttribute('data-variant-id') || null;
            const key = `${productId}:${variantId ?? 'null'}`;
            const single = datasetsByKey[key];
            if (!single) return;
            showChart();
            if (chartInstance) {
                chartInstance.destroy();
                chartInstance = null;
            }
            chartInstance = window.createLineChart(chartCanvas, [single]);
        });
    </script>
@endpush