<?php

namespace Modules\EcommerceFinance\View;

use Illuminate\Pagination\LengthAwarePaginator;
use Modules\EcommerceFinance\Repositories\SupplierManagementMirrorRepository;
use Modules\EcommerceFinance\Services\SupplierFreeShippingStore;
use Throwable;

class SupplierManagementPageData
{
    public const TABS = ['contracts' => '合同信息', 'contacts' => '联系信息', 'payments' => '打款信息', 'logs' => '操作日志'];

    public const FREE_SHIPPING_COLUMN = SupplierFreeShippingStore::FIELD;

    public const FREE_SHIPPING_LABEL = '是否包邮厂家';

    public function __construct(
        private readonly SupplierManagementMirrorRepository $repository,
        private readonly SupplierFreeShippingStore $freeShipping,
    ) {
    }

    /** 是否包邮厂家紧跟在供应商名称后展示。 */
    public static function columns(): array
    {
        $columns = [];
        foreach (SupplierManagementMirrorRepository::COLUMNS as $key => $label) {
            $columns[$key] = $label;
            if ($key === 'scmname') {
                $columns[self::FREE_SHIPPING_COLUMN] = self::FREE_SHIPPING_LABEL;
            }
        }

        return $columns;
    }

    public function filters(array $input): array
    {
        $text = static fn ($key): string => mb_substr(trim(is_scalar($input[$key] ?? '') ? (string) ($input[$key] ?? '') : ''), 0, 191);
        return ['supplier_name' => $text('supplier_name'), 'buyer' => $text('buyer'),
            'cooperation_status' => in_array($text('cooperation_status'), ['1', '2'], true) ? $text('cooperation_status') : ''];
    }

    public function page(): array
    {
        $filters = $this->filters(request()->query());
        $page = max((int) request('page', 1), 1);
        $limit = min(max((int) request('limit', 20), 1), 100);
        $requestedTab = request('detail_tab', 'contracts');
        $tab = is_string($requestedTab) && array_key_exists($requestedTab, self::TABS) ? $requestedTab : 'contracts';
        $result = ['rows' => [], 'total' => 0];
        $detail = ['rows' => [], 'total' => 0, 'message' => '请选择上方供应商查看详情。', 'ready' => false];
        $state = null;
        $ready = false;
        $error = null;
        $selected = null;
        try {
            $state = $this->repository->state();
            $ready = $this->repository->ready();
            if ($ready) {
                $result = $this->repository->paginate($filters, $page, $limit);
                $result['rows'] = $this->freeShipping->decorateRows(
                    $result['rows'],
                    (int) (company_id() ?: 1),
                );
                if ((int) request('supplier_id', 0) > 0) {
                    // 选择必须仍在当前列表中；筛选和翻页后清除旧选择。
                    $selected = collect($result['rows'])->firstWhere('Id', (int) request('supplier_id'));
                    if ($selected) {
                        try {
                            $detail = $this->repository->details($selected, $tab, max((int) request('detail_page', 1), 1), $limit);
                        } catch (Throwable $exception) {
                            report($exception);
                            $detail['message'] = '该详情资料暂时无法读取，请稍后重试。';
                        }
                    } else {
                        $detail['message'] = '该供应商不在当前列表，请重新选择。';
                    }
                }
            }
        } catch (Throwable $exception) {
            report($exception);
            $error = '供应商资料暂时无法读取，请稍后重试。';
        }
        return [
            'view' => 'business.pages.supplier-payables.supplier-management',
            'supplierFilters' => $filters, 'supplierState' => $state, 'supplierReady' => $ready,
            'supplierError' => $error, 'supplierColumns' => self::columns(),
            'suppliers' => new LengthAwarePaginator($result['rows'], $result['total'], $limit, $page,
                ['path' => request()->url(), 'query' => request()->except('page', 'supplier_id', 'detail_page')]),
            'selectedSupplier' => $selected, 'supplierDetailTab' => $tab,
            'supplierDetail' => $detail,
            'supplierDetails' => new LengthAwarePaginator($detail['rows'], $detail['total'], $limit, max((int) request('detail_page', 1), 1),
                ['path' => request()->url(), 'pageName' => 'detail_page', 'query' => request()->except('detail_page')]),
        ];
    }
}