<?php

namespace App\Business;

use App\Models\Business\StoreReceivingAccount;
use Modules\EcommerceFinance\Repositories\BusinessInformationMirrorRepository;
use Modules\EcommerceFinance\Services\StoreReportPeriodBuilder;

class StoreReceivingAccountSynchronizer
{
    public function __construct(
        private readonly BusinessInformationMirrorRepository $mirror,
        private readonly StoreReportPeriodBuilder $storeReportPeriods,
    ) {
    }

    /**
     * Seed account rows from the read-only store-information mirror while
     * preserving any credentials already entered by the user.
     *
     * @return array{created:int,updated:int,skipped:int,by_platform:array<string,int>}
     */
    public function sync(?int $companyId = null): array
    {
        $companyId ??= (int) (company_id() ?: 1);
        $created = 0;
        $updated = 0;
        $skipped = 0;
        $byPlatform = [];

        // Load the local directory once; avoid one SQL lookup per upstream
        // shop every time a tab is opened.
        $existing = StoreReceivingAccount::withoutGlobalScopes()
            ->withTrashed()
            ->where('company_id', $companyId)
            ->get();
        $byWallet = [];
        $byPlatformAndName = [];
        $byName = [];
        $sourceStores = $this->mirror->receivingAccountStores();
        // 店铺主体跟随店铺维度报表的“存续中”期间，不再直接取店铺档案当前主体。
        $currentCompanies = $this->storeReportPeriods->currentCompanies(array_map(
            static fn (array $row): array => [
                'erp_store_name' => trim((string) ($row['erp_store_name'] ?? '')),
                'system_company_name' => trim((string) ($row['company_name'] ?? '')),
            ],
            $sourceStores,
        ));

        foreach ($existing as $account) {
            $platform = (string) $account->store_platform;
            $wallet = trim((string) $account->wallet_number);
            $name = trim((string) $account->store_name);
            if ($wallet !== '') {
                $byWallet[$platform . "\0" . $wallet] ??= $account;
            }
            if ($name !== '') {
                $byPlatformAndName[$platform . "\0" . $name] ??= $account;
                $byName[$name] ??= $account;
            }
        }

        foreach ($sourceStores as $row) {
            $erpStoreName = trim((string) ($row['erp_store_name'] ?? ''));
            $platform = $this->classify($erpStoreName, (string) ($row['source_platform'] ?? ''));

            if ($erpStoreName === '' || $platform === null) {
                $skipped++;
                continue;
            }

            $storeId = trim((string) ($row['store_id'] ?? $row['id'] ?? ''));
            $account = $storeId !== ''
                ? ($byWallet[$platform . "\0" . $storeId] ?? null)
                : null;

            // Older rows created before wallet_number was populated may have
            // been classified by the upstream platform. Reuse them by ERP
            // name so a corrected prefix classification does not duplicate a
            // store row.
            $account ??= $byPlatformAndName[$platform . "\0" . $erpStoreName]
                ?? $byName[$erpStoreName]
                ?? null;

            $attributes = [
                'company_id' => $companyId,
                'store_platform' => $platform,
                'store_name' => $erpStoreName,
                'store_entity_name' => $currentCompanies[$erpStoreName]
                    ?? trim((string) ($row['company_name'] ?? '')),
                'shop_name' => trim((string) ($row['shop_name'] ?? '')) ?: $erpStoreName,
                'store_status' => $this->status($row['store_status'] ?? null),
                'wallet_number' => $storeId,
                'store_id' => $storeId,
                'source_platform' => trim((string) ($row['source_platform'] ?? '')),
            ];

            if ($account === null) {
                $account = new StoreReceivingAccount();
                $account->fill($attributes);
                $account->save();
                $created++;
                if ($storeId !== '') {
                    $byWallet[$platform . "\0" . $storeId] = $account;
                }
                $byPlatformAndName[$platform . "\0" . $erpStoreName] = $account;
                $byName[$erpStoreName] ??= $account;
            } else {
                if ($account->trashed()) {
                    $account->restore();
                }
                $account->fill($attributes);
                if ($account->isDirty()) {
                    $account->save();
                    $updated++;
                }
                if ($storeId !== '') {
                    $byWallet[$platform . "\0" . $storeId] = $account;
                }
                $byPlatformAndName[$platform . "\0" . $erpStoreName] = $account;
                $byName[$erpStoreName] ??= $account;
            }

            $byPlatform[$platform] = ($byPlatform[$platform] ?? 0) + 1;
        }

        return compact('created', 'updated', 'skipped', 'byPlatform');
    }

    public function classify(string $erpStoreName, string $sourcePlatform = ''): ?string
    {
        $prefix = preg_split('/[-—_－|丨\/\\（）()【】\[\]·:：]+/u', trim($erpStoreName), 2)[0] ?? '';
        $prefix = trim((string) $prefix);
        $sourcePlatform = trim($sourcePlatform);

        $platforms = ['淘宝分销', '阿里巴巴', '天猫', '唯品会', '淘宝', '京喜', '京东', '抖音', '拼多多'];

        foreach ($platforms as $platform) {
            if (str_starts_with($prefix, $platform)) {
                return $platform;
            }
        }

        foreach ($platforms as $platform) {
            if (str_starts_with($sourcePlatform, $platform)) {
                return $platform;
            }
        }

        return null;
    }

    private function status(mixed $value): ?string
    {
        return match ((string) $value) {
            '0', '正常' => '正常',
            '3', '关闭中', '关店中' => '关店中',
            '6', '已关闭', '已关店' => '已关店',
            default => trim((string) $value) ?: null,
        };
    }
}