<?php

namespace Modules\EcommerceFinance\View;

use Illuminate\Pagination\Paginator;
use Illuminate\Support\Collection;
use Throwable;

class BillOffsetPageData
{
    public function __construct(private readonly OrderDataPageData $orderData)
    {
    }

    /** 账单冲减复用原始数据的订单售后费用明细，不重新推断科目。 */
    public function page(): array
    {
        return ['view' => 'business.pages.order-data.bill-offset'] + $this->data();
    }

    /** @param array<string,mixed>|null $input */
    public function data(?array $input = null, ?int $page = null, ?int $limit = null): array
    {
        $filters = $this->orderData->afterSalesFilters($input);

        return $this->dataForNormalizedFilters(
            $filters,
            $page ?? (int) request('page', 1),
            $limit ?? (int) setting('default.list_limit', 25),
        );
    }

    /**
     * Reuse an already normalized filter set for subsequent export pages.
     *
     * @param array{from:string,to:string,order_no:string,shop_name:string,sku_id:string} $filters
     * @return array<string,mixed>
     */
    public function dataForNormalizedFilters(array $filters, int $page, int $limit): array
    {
        $page = max($page, 1);
        $limit = min(max($limit, 1), 100);
        $rows = $this->emptyPaginator($page, $limit);
        $status = null;
        $error = null;

        try {
            $result = $this->orderData->afterSalesRows($filters, $page, $limit);
            $rows = new Paginator(
                Collection::make($result['rows'] ?? [])->map(static fn (array $row): object => (object) $row),
                $limit,
                $page,
                [
                    'path' => request()->url(),
                    'query' => request()->except('page'),
                ],
            );
            $rows->hasMorePagesWhen((bool) ($result['has_more'] ?? false));
            $status = data_get($result, 'status.X-Caiwu-Data-Status');
        } catch (Throwable $exception) {
            report($exception);
            $error = '订单售后费用数据暂时无法读取，请稍后重试。';
        }

        $amounts = Collection::make($rows->items())->pluck('account_500112');
        // 500112 未接入时保留为空；本页有任何未知金额时不生成误导性合计。
        $amount = $amounts->isNotEmpty() && $amounts->every(static fn ($value): bool => is_numeric($value))
            ? round((float) $amounts->sum(), 2)
            : null;

        return [
            'billOffsetFilters' => $filters,
            'billOffsetRows' => $rows,
            'billOffsetSummary' => ['count' => $rows->count(), 'amount' => $amount],
            'billOffsetStatus' => $status,
            'billOffsetError' => $error,
        ];
    }

    private function emptyPaginator(int $page, int $limit): Paginator
    {
        return new Paginator([], $limit, $page, [
            'path' => request()->url(),
            'query' => request()->except('page'),
        ]);
    }
}