<?php

namespace Modules\EcommerceFinance\View;

use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Collection;
use Modules\EcommerceFinance\Repositories\PlatformPromotionAccountRepository;
use Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException;
use Throwable;

class PlatformPromotionAccountPageData
{
    public function __construct(private readonly PlatformPromotionAccountRepository $repository)
    {
    }

    public function content(?string $tab = null): array
    {
        $requestedMonth = $this->month(request('month'));
        $month = $requestedMonth ?: now()->format('Y-m');
        $filters = [
            'month' => $month,
            'shop_name' => $this->text(request('shop_name')),
            'account' => $this->text(request('account')),
        ];
        $tab = in_array($tab, ['jd', 'douyin', 'dewu', 'vip'], true) ? $tab : 'jd';

        try {
            if ($requestedMonth === '') {
                $month = $this->repository->latestMonth() ?: $month;
                $filters['month'] = $month;
            }
            $data = $this->repository->dashboard($filters, 5000);

            return [
                'view' => 'business.pages.billing-transactions.platform-promotion-accounts',
                'filters' => $filters,
                'data' => $data,
                'platform' => $tab,
                'rows' => $this->paginateRows($data, $tab),
                'error' => null,
            ];
        } catch (ServiceUnavailableHttpException $exception) {
            return [
                'view' => 'business.pages.billing-transactions.platform-promotion-accounts',
                'filters' => $filters,
                'data' => [],
                'platform' => $tab,
                'rows' => $this->emptyPaginator(),
                'error' => $exception->getMessage(),
            ];
        } catch (Throwable $exception) {
            report($exception);

            return [
                'view' => 'business.pages.billing-transactions.platform-promotion-accounts',
                'filters' => $filters,
                'data' => [],
                'platform' => $tab,
                'rows' => $this->emptyPaginator(),
                'error' => '推广账户数据暂时无法读取，请稍后重试。',
            ];
        }
    }

    private function paginateRows(array $data, string $tab): LengthAwarePaginator
    {
        $key = ['jd' => 'jd', 'douyin' => 'dy', 'dewu' => 'dw', 'vip' => 'vipSales'][$tab];
        $rows = $tab === 'vip'
            ? array_merge($data['vipSales'] ?? [], $data['vipTax'] ?? [], $data['vipMarketing'] ?? [])
            : ($data[$key] ?? []);
        $page = max((int) request('page', 1), 1);
        $perPage = 50;

        return new LengthAwarePaginator(
            Collection::make($rows)->forPage($page, $perPage)->values(),
            count($rows),
            $perPage,
            $page,
            ['path' => request()->url(), 'query' => request()->except('page')],
        );
    }

    private function emptyPaginator(): LengthAwarePaginator
    {
        return new LengthAwarePaginator([], 0, 50, 1, [
            'path' => request()->url(),
            'query' => request()->query(),
        ]);
    }

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

    private function month(mixed $value): string
    {
        $value = trim((string) $value);
        if (preg_match('/^(\d{4})-(\d{2})$/', $value, $matches) !== 1
            || (int) $matches[2] < 1
            || (int) $matches[2] > 12) {
            return '';
        }

        return $value;
    }
}