<?php

namespace Modules\EcommerceFinance\View;

use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Collection;
use Modules\EcommerceFinance\Repositories\BillOffsetMirrorRepository;
use Throwable;

class BillOffsetPageData
{
    public function __construct(private readonly BillOffsetMirrorRepository $bills)
    {
    }

    /** @return array<string,mixed> */
    public function page(): array
    {
        $filters = [
            'from' => $this->date(request('from')) ?: now()->subDays(6)->toDateString(),
            'to' => $this->date(request('to')) ?: now()->toDateString(),
            'order_no' => $this->text(request('order_no')),
            'shop_name' => $this->text(request('shop_name')),
            'sku_id' => $this->text(request('sku_id')),
        ];
        $page = max((int) request('page', 1), 1);
        $limit = min(max((int) setting('default.list_limit', 25), 1), 100);
        $rows = new LengthAwarePaginator([], 0, $limit, $page, [
            'path' => request()->url(),
            'query' => request()->except('page'),
        ]);
        $summary = ['amount' => 0.0, 'count' => 0];
        $sync = ['status' => 'unavailable', 'last_succeeded_at' => null];
        $error = null;

        try {
            $result = $this->bills->paginate($filters, $page, $limit);
            $rows = new LengthAwarePaginator(
                Collection::make($result['data'] ?? []),
                (int) ($result['total'] ?? 0),
                $limit,
                $page,
                ['path' => request()->url(), 'query' => request()->except('page')],
            );
            $summary = $result['summary'] ?? $summary;
            $sync = $result['sync'] ?? $sync;
        } catch (Throwable $exception) {
            if (! str_contains($exception->getMessage(), 'bill_offset_mirror_not_ready')) {
                report($exception);
            }
            $error = '账单冲减镜像尚未完成首次同步，当前不把空镜像解释为没有数据。';
        }

        return [
            'view' => 'business.pages.order-data.bill-offset',
            'billOffsetRows' => $rows,
            'billOffsetFilters' => $filters,
            'billOffsetSummary' => $summary,
            'billOffsetSync' => $sync,
            'billOffsetError' => $error,
        ];
    }

    private function text(mixed $value): string
    {
        return mb_substr(trim((string) $value), 0, 100);
    }

    private function date(mixed $value): string
    {
        $value = trim((string) $value);
        if (preg_match('/^(\d{4})-(\d{2})-(\d{2})$/', $value, $matches) !== 1) {
            return '';
        }
        return checkdate((int) $matches[2], (int) $matches[3], (int) $matches[1]) ? $value : '';
    }
}