<?php

namespace Modules\EcommerceFinance\View;

use Illuminate\Pagination\Paginator;
use Illuminate\Support\Collection;
use Modules\EcommerceFinance\Repositories\OrderProfitRepository;
use Throwable;

class OrderProfitPageData
{
    public function __construct(private readonly OrderProfitRepository $repository)
    {
    }

    public function page(): array
    {
        return ['view' => 'business.pages.order-data.order-profit'] + $this->data();
    }

    public function data(?array $input = null, ?int $page = null, ?int $limit = null): array
    {
        $filters = $this->filters($input);
        $page = max($page ?? (int) request('page', 1), 1);
        $limit = min(max($limit ?? (int) setting('default.list_limit', 25), 1), 100);
        $rows = $this->paginator([], $filters, $page, $limit);
        $error = null;
        $status = $this->repository->status();
        $hasFilters = $this->hasFilters($filters);

        if ($hasFilters && ($status['ready'] ?? false)) {
            try {
                $result = $this->repository->paginate($filters, $page, $limit);
                $rows = $this->paginator(
                    (array) ($result['rows'] ?? []),
                    $filters,
                    $page,
                    $limit,
                    (bool) ($result['has_more'] ?? false),
                );
            } catch (Throwable $exception) {
                report($exception);
                $error = '订单利润数据暂时无法读取，请稍后重试。';
            }
        } elseif ($hasFilters && ! ($status['ready'] ?? false)) {
            $error = '订单利润共享镜像尚未完成首次同步。';
        }

        return [
            'orderProfitRows' => $rows,
            'orderProfitFilters' => $filters,
            'orderProfitShopOptions' => $this->repository->shopNames(),
            'orderProfitStatus' => $status,
            'orderProfitError' => $error,
            'orderProfitHasFilters' => $hasFilters,
        ];
    }

    /** @return array{from:string,to:string,order_no:string,shop_name:string,shop_names:array<int,string>,sku_id:string} */
    private function filters(?array $input): array
    {
        $input ??= request()->query();
        $shops = [];
        $rawShops = $input['shop_name'] ?? $input['shop_names'] ?? [];
        foreach ((array) $rawShops as $shop) {
            $shop = trim((string) $shop);
            if ($shop !== '') {
                $shops[$shop] = true;
            }
            if (count($shops) >= 50) {
                break;
            }
        }

        $orderNo = $this->batchText($input['order_no'] ?? null);
        $sku = $this->batchText($input['sku_id'] ?? null);
        $hasOtherFilters = $orderNo !== '' || $sku !== '' || $shops !== [];
        $datesWereSubmitted = array_key_exists('from', $input) || array_key_exists('to', $input);
        $reset = ! empty($input['reset']);
        $from = $this->date($input['from'] ?? null);
        $to = $this->date($input['to'] ?? null);

        if (! $datesWereSubmitted && ! $reset && ! $hasOtherFilters) {
            $from = now()->subDays(6)->toDateString();
            $to = now()->toDateString();
        }

        return [
            'from' => $from,
            'to' => $to,
            'order_no' => $orderNo,
            'shop_name' => implode("\n", array_keys($shops)),
            'shop_names' => array_keys($shops),
            'sku_id' => $sku,
        ];
    }

    private function date(mixed $value): string
    {
        $value = trim((string) $value);
        if ($value === '') {
            return '';
        }

        $timestamp = strtotime($value);

        return $timestamp === false ? '' : date('Y-m-d', $timestamp);
    }

    private function batchText(mixed $value): string
    {
        $values = is_array($value) ? $value : preg_split('/[\r\n,，;；]+/u', (string) $value);
        $items = [];
        foreach ((array) $values as $item) {
            $item = trim((string) $item);
            if ($item !== '') {
                $items[$item] = true;
            }
            if (count($items) >= 100) {
                break;
            }
        }

        return implode("\n", array_keys($items));
    }

    private function hasFilters(array $filters): bool
    {
        return trim((string) $filters['order_no']) !== ''
            || trim((string) $filters['shop_name']) !== ''
            || trim((string) $filters['sku_id']) !== ''
            || $filters['from'] !== ''
            || $filters['to'] !== '';
    }

    private function paginator(
        array $rows,
        array $filters,
        int $page,
        int $limit,
        ?bool $hasMore = null,
    ): Paginator {
        $paginator = new Paginator(
            Collection::make($rows)->map(static fn (array $row): object => (object) $row),
            $limit,
            $page,
            [
                'path' => request()->url(),
                'query' => request()->except('page'),
            ],
        );

        if ($hasMore !== null) {
            $paginator->hasMorePagesWhen($hasMore);
        }

        return $paginator;
    }
}