<?php

namespace Modules\EcommerceFinance\Services;

use RuntimeException;

/**
 * 从 AI 库 JSReportReplica.rpt 读取财务台账动账明细。
 *
 * 数据口径以《财务台账模块开发规格.md》第 3 章为准；所有 SQL 都是固定、
 * 参数化的 SELECT，不读取 base，也不写上游。同步结果交给
 * FinanceLedgerTransactionWriter 全量替换并重算流水。
 */
class FinanceLedgerRptSynchronizer
{
    private const SOURCE = 'operations_replica';

    private const DING_SINCE = '2025-10-18';

    private const JST_WORK_ORDER_TYPE = '9E5A531F48D94AF4B8611FA6918ADA29';

    private const FIXED_ASSET_PROCESS = 'PROC-6407E98B-040A-4C96-AA7D-696650FC1A25';

    private const DETAIL_FIELDS = [
        'PROC-B290696F-EC2A-4F76-87BA-E0A12E10D09F' => '收款费用明细',
        'PROC-C5159B8D-F412-4DF8-981D-64EBB8D03EB6' => '收款费用明细',
        'PROC-39DD70DE-DAB2-4A5F-B8F1-0B0B68BD0C88' => '应付明细',
        'PROC-BBAC7187-9E59-4942-941A-59C7EAF0CEDA' => '收款费用明细',
        'PROC-ACF09A14-B094-46B1-A9E2-8BB1F4E1FDCF' => '收款费用明细',
        'PROC-6407E98B-040A-4C96-AA7D-696650FC1A25' => '固定资产报废或出售出售明细',
    ];

    private const CHANNEL_NAMES = [
        'alipayCSV' => '支付宝',
        'JDWallet' => '京东钱包',
        'PinduoduoImport' => '拼多多',
        'TouTiaoFXGZJ' => '抖音',
        'WeChatPay' => '微信',
        'CommonBillTGCPay' => '腾讯广告',
        'PddMarketingImport' => '拼多多营销',
        'XiaohsSeller' => '小红书',
    ];

    public function __construct(
        private readonly UpstreamReadOnlyQueryFactory $queries,
        private readonly FinanceLedgerTransactionWriter $writer,
    ) {
    }

    public function sync(bool $recalculate = true, ?string $from = null, ?string $to = null, bool $merge = false): array
    {
        $from = trim((string) ($from ?? config('finance_ledger.window_start', '2026-04-18')));
        $to = trim((string) ($to ?? config('finance_ledger.window_end', ''))) ?: now()->toDateString();
        $lookback = $merge ? $from : self::DING_SINCE;

        $transactions = array_merge(
            $this->dingTalkRows($lookback, $to),
            $this->workOrderRows(),
            $this->payableRows($from),
            $this->storeOpeningRows($from),
            $this->withdrawalRows($from),
        );

        $transactions = array_values(array_filter(
            $transactions,
            static fn (array $row): bool => $row['txn_date'] >= $from && $row['txn_date'] <= $to,
        ));

        if ($transactions === []) {
            throw new RuntimeException('rpt 没有返回窗口内的动账明细。');
        }

        $result = $merge
            ? $this->writer->merge($transactions, $recalculate)
            : $this->writer->replace($transactions, $recalculate);
        $result['source_counts'] = array_count_values(array_column($transactions, 'process_type'));

        return $result;
    }

    /** @return array<int,array<string,mixed>> */
    private function dingTalkRows(string $from, string $to): array
    {
        $query = $this->query();

        $workflows = $query->select(
            'SELECT processInstanceId, processCode, businessId, title, status, originatorUserId, '
            . 'originatorDeptName, joinAt, finishTime FROM rpt.fin_ledger_dingtalk_workflow '
            . 'WHERE joinAt >= ? AND joinAt < ?',
            [$from, \Carbon\CarbonImmutable::parse($to)->addDay()->toDateString()],
        );

        if ($workflows === []) {
            return [];
        }

        $schemes = [];
        foreach (array_chunk(array_values(array_unique(array_column($workflows, 'processInstanceId'))), 100) as $ids) {
            $placeholders = implode(',', array_fill(0, count($ids), '?'));
            $batch = $query->select(
                'SELECT s.id, s.processInstanceId, s.name, s.value FROM rpt.fin_ledger_dingtalk_scheme s '
                . 'WHERE s.processInstanceId IN (' . $placeholders . ') ORDER BY s.id',
                $ids,
            );
            array_push($schemes, ...$batch);
        }

        $employees = [];
        foreach ($query->select('SELECT userid, name FROM rpt.hr_employee') as $employee) {
            $employees[(string) $employee['userid']] = trim((string) ($employee['name'] ?? ''));
        }

        $byInstance = [];
        foreach ($schemes as $scheme) {
            $pid = (string) $scheme['processInstanceId'];
            $name = (string) $scheme['name'];
            $byInstance[$pid][$name] = (string) $scheme['value'];
        }

        $rows = [];
        foreach ($workflows as $workflow) {
            $pid = (string) $workflow['processInstanceId'];
            $code = (string) $workflow['processCode'];
            $processName = (string) (config('finance_ledger.dingtalk_process_codes.' . $code) ?: '钉钉审批');
            if ((string) $workflow['status'] !== 'COMPLETED') {
                continue;
            }

            $applicant = $employees[(string) ($workflow['originatorUserId'] ?? '')] ?? '';
            if ($applicant === '') {
                if (preg_match('/^(?:\d{2}-\d{2}\+?)?(.+?)提交的/u', (string) ($workflow['title'] ?? ''), $matches) === 1) {
                    $applicant = trim($matches[1]);
                }
            }
            $dept = trim((string) ($workflow['originatorDeptName'] ?? ''));
            $fields = $byInstance[$pid] ?? [];
            $approval = trim((string) ($workflow['businessId'] ?? ''));

            if ($code === self::FIXED_ASSET_PROCESS) {
                foreach ($this->detailRows($fields['固定资产报废或出售明细'] ?? '', $code) as $detail) {
                    $text = $this->joinParts([
                        $applicant,
                        $dept,
                        $detail['use'],
                        $detail['asset_name'] !== '' ? '资产：' . $detail['asset_name'] : '',
                    ]);
                    $rows[] = $this->row([
                        'date' => $detail['pay_time'],
                        'account_short' => '',
                        'source_value' => '银行存款_个人账户_招商银行-朱俊祥',
                        'source' => 'dingtalk',
                        'process_type' => $processName,
                        'approval_no' => $approval,
                        'detail' => $text,
                        'income' => $detail['sale_price'],
                        'expense' => 0,
                        'pid' => $pid,
                        'seq' => $detail['seq'],
                        'acct_code' => '1002.02.046',
                        'acct_name' => '银行存款_个人账户_招商银行-朱俊祥',
                    ]);
                }
                continue;
            }

            $payments = $this->paymentRows($fields['付款明细'] ?? '');
            $details = $this->detailRows($fields[self::DETAIL_FIELDS[$code] ?? ''] ?? '', $code);
            $detailMap = [];
            foreach ($details as $detail) {
                foreach ($this->seqTokens($detail['seq']) ?: [''] as $token) {
                    $detailMap[$token][] = $detail;
                }
            }
            if (count($details) === 1 && $detailMap === []) {
                $detailMap['_all'] = $details;
            }

            foreach ($payments as $payment) {
                if ($payment['amount'] == 0.0 && $payment['code'] === '') {
                    continue;
                }
                $tokens = $this->seqTokens($payment['seq']) ?: ['_all'];
                $matched = [];
                foreach ($tokens as $token) {
                    $matched = array_merge($matched, $detailMap[$token] ?? []);
                }
                if ($matched === [] && isset($detailMap['_all'])) {
                    $matched = $detailMap['_all'];
                }
                if ($matched === [] && count($details) === 1) {
                    $matched = $details;
                }

                $uses = $payees = $suppliers = $shops = $items = [];
                foreach ($matched as $detail) {
                    if ($detail['use'] !== '') {
                        $uses[] = $detail['use'];
                    }
                    if ($detail['payee'] !== '') {
                        $payees[] = $detail['payee'];
                    }
                    if ($detail['supplier'] !== '') {
                        $suppliers[] = $detail['supplier'];
                    }
                    if ($detail['shop'] !== '') {
                        $shops[] = $detail['shop'];
                    }
                    if ($detail['item'] !== '') {
                        $items[] = $detail['item'];
                    }
                }

                if ($code === 'PROC-39DD70DE-DAB2-4A5F-B8F1-0B0B68BD0C88') {
                    $express = $projects = [];
                    foreach ($matched as $detail) {
                        if ($detail['express'] !== '') {
                            $express[] = $detail['express'];
                        }
                        if ($detail['project'] !== '') {
                            $projects[] = $detail['project'];
                        }
                    }
                    $payeeText = $this->unique($payees) ?: ($this->unique($projects) ?: $this->unique($express));
                    $supplierText = $this->unique($suppliers) ?: ($this->unique($express) ?: $this->unique($projects));
                    $text = $this->joinParts([$applicant, $dept, $payeeText, $supplierText]);
                } else {
                    $extra = '';
                    if ($uses === [] && ($shops !== [] || $items !== [])) {
                        $extra = $this->unique($shops) . ($items !== [] ? '/' . $this->unique($items) : '');
                        $diff = array_sum(array_map(static fn (array $detail): float => (float) $detail['diff'], $matched));
                        if ($diff != 0.0) {
                            $extra .= '；差价' . number_format($diff, 2, '.', '');
                        }
                    }
                    $text = $this->joinParts([$applicant, $dept, $this->unique($uses) ?: $extra]);
                }

                $rows[] = $this->row([
                    'date' => $payment['date'],
                    'account_short' => '',
                    'source_value' => $payment['name'],
                    'source' => 'dingtalk',
                    'process_type' => $processName,
                    'approval_no' => $approval,
                    'detail' => $text,
                    'income' => 0,
                    'expense' => $payment['amount'],
                    'pid' => $pid,
                    'seq' => $payment['seq'],
                    'acct_code' => $payment['code'],
                    'acct_name' => $payment['name'],
                ]);
            }
        }

        return $rows;
    }

    /** @return array<int,array<string,mixed>> */
    private function workOrderRows(): array
    {
        $rows = $this->query()->select(
            'SELECT Id, woNo, createby, created, completeTime, businessFieldList FROM rpt.fin_ledger_workorder',
        );

        $result = [];
        foreach ($rows as $row) {
            $fields = json_decode((string) ($row['businessFieldList'] ?? ''), true);
            if (! is_array($fields)) {
                continue;
            }
            $map = [];
            foreach ($fields as $field) {
                $id = (string) ($field['fieldId'] ?? '');
                $map[substr($id, -6)] = $field['value'] ?? null;
            }
            $amount = $this->toNumber($map['091551'] ?? null);
            $kind = trim((string) ($map['101125'] ?? ''));
            $state = trim((string) ($map['101747'] ?? ''));
            if ($amount <= 0 || $kind !== '入账' || ! in_array($state, ['已到账', '已收到'], true)) {
                continue;
            }
            $result[] = $this->row([
                'date' => $this->date($map['101432'] ?? null),
                'account_short' => trim((string) ($map['101730'] ?? '')),
                'source_value' => trim((string) ($map['101730'] ?? '')),
                'source' => 'workorder',
                'process_type' => '聚工单查账流程',
                'approval_no' => trim((string) ($row['woNo'] ?? '')),
                'detail' => $this->joinParts([trim((string) ($row['createby'] ?? '')), '查账工单', $state]),
                'income' => $amount,
                'expense' => 0,
                'pid' => 'JST-' . (string) ($row['Id'] ?? ''),
            ]);
        }

        return $result;
    }

    /** @return array<int,array<string,mixed>> */
    private function payableRows(string $from): array
    {
        $sql = 'WITH paid AS ('
            . 'SELECT r.DetailId, SUM(r.amountLower) AS paid_amount FROM rpt.biz_bank_receipt_detail r '
            . "WHERE r.DetailId IS NOT NULL AND r.BindStatus = N'已绑定' AND r.MatchStatus = N'匹配成功' AND r.amountLower > 0 "
            . 'GROUP BY r.DetailId'
            . '), detail AS ('
            . 'SELECT d.id, d.bill_period, d.business_no, d.third_short_name, d.our_subsidiary_name, '
            . 'd.third_subsidiary_name, d.deduct_amount, ISNULL(p.paid_amount,0) AS paid_amount, '
            . "CASE WHEN ISNULL(p.paid_amount,0) <= 0 THEN N'等待打款' "
            . "WHEN ISNULL(p.paid_amount,0) >= d.deduct_amount THEN N'打款完成' ELSE N'打款中' END AS receipt_pay_status "
            . 'FROM rpt.biz_quota_deduct_detail d LEFT JOIN paid p ON p.DetailId = d.id WHERE d.is_del = 0'
            . ') SELECT d.id, d.bill_period, d.business_no, d.third_short_name, d.our_subsidiary_name, '
            . 'd.third_subsidiary_name, d.deduct_amount, d.paid_amount, d.receipt_pay_status, '
            . 'r.Id, r.payerAccountName, r.UploadTime, r.amountLower, r.transactionDate, r.bookingDate '
            . 'FROM detail d JOIN rpt.biz_bank_receipt_detail r ON r.DetailId = d.id AND r.TaskId = d.business_no '
            . "WHERE d.receipt_pay_status IN (N'打款中',N'打款完成')";

        $rows = $this->query()->select($sql);
        $result = [];
        foreach ($rows as $row) {
            $amount = $this->toNumber($row['amountLower'] ?? null);
            if ($amount <= 0) {
                continue;
            }
            $date = $this->date($row['transactionDate'] ?? null)
                ?: $this->date($row['bookingDate'] ?? null)
                ?: $this->date($row['UploadTime'] ?? null);
            $result[] = $this->row([
                'date' => $date,
                'account_short' => trim((string) ($row['payerAccountName'] ?? '')),
                'source_value' => trim((string) ($row['payerAccountName'] ?? '')),
                'source' => 'payable',
                'process_type' => '供应商应付',
                'approval_no' => trim((string) ($row['business_no'] ?? '')),
                'detail' => $this->joinParts([
                    trim((string) ($row['third_short_name'] ?? '')),
                    trim((string) ($row['our_subsidiary_name'] ?? '')),
                    trim((string) ($row['third_subsidiary_name'] ?? '')),
                    trim((string) ($row['bill_period'] ?? '')),
                ]),
                'income' => 0,
                'expense' => $amount,
                'pid' => 'PAY-' . (string) ($row['id'] ?? '') . '-' . (string) ($row['Id'] ?? ''),
            ]);
        }

        return $result;
    }

    /** @return array<int,array<string,mixed>> */
    private function storeOpeningRows(string $from): array
    {
        $sql = 'SELECT flowId, AccountCode, AccountName, costType, money, paymentTime, '
            . 'paymentAccount, erpShopName, platform, applyUser, applyDepartment '
            . 'FROM rpt.fin_ledger_store_opening WHERE paymentTime >= ?';

        $rows = $this->query()->select($sql, [$from]);
        $seen = [];
        $result = [];
        foreach ($rows as $row) {
            $key = implode('|', [
                (string) ($row['flowId'] ?? ''),
                (string) ($row['costType'] ?? ''),
                (string) ($row['money'] ?? ''),
                (string) ($row['paymentTime'] ?? ''),
                trim((string) ($row['paymentAccount'] ?? '')),
            ]);
            if (isset($seen[$key])) {
                continue;
            }
            $seen[$key] = true;

            $amount = $this->toNumber($row['money'] ?? null);
            $note = '';
            if ($amount > 10_000_000) {
                $note = '原值异常已按申请单修正为 200.00';
                $amount = 200.0;
            }
            $account = trim((string) ($row['paymentAccount'] ?? ''));
            if (in_array($account, ['无', '-'], true)) {
                $account = '';
            }
            $result[] = $this->row([
                'date' => $this->date($row['paymentTime'] ?? null),
                'account_short' => $account,
                'source_value' => $account,
                'source' => 'store',
                'process_type' => '店铺开店费用',
                'approval_no' => trim((string) ($row['flowId'] ?? '')),
                'detail' => $this->joinParts([
                    trim((string) ($row['applyUser'] ?? '')),
                    trim((string) ($row['applyDepartment'] ?? '')),
                    trim((string) ($row['erpShopName'] ?? '')),
                    trim((string) ($row['platform'] ?? '')),
                    trim((string) ($row['costType'] ?? '')),
                ]),
                'income' => 0,
                'expense' => $amount,
                'pid' => 'SHOP-' . (string) ($row['flowId'] ?? '') . '-' . (string) ($row['costType'] ?? '') . '-' . (string) ($row['money'] ?? ''),
                'note' => $note,
            ]);
        }

        return $result;
    }

    /** @return array<int,array<string,mixed>> */
    private function withdrawalRows(string $from): array
    {
        $query = $this->query();
        $result = [];
        $seen = [];

        // 视图已经按 fee_time + inout_type 建了过滤索引；这里按月份拉取，
        // 应用侧按 primary_key 去重，避免视图内 ROW_NUMBER 全量排序。
        foreach ($this->monthWindows($from, now()->toDateString()) as [$windowStart, $windowEnd]) {
            $rows = $query->select(
                'SELECT Id, shop_name, channel, fee_time, fee_name, amount, primary_key '
                . 'FROM rpt.fin_ledger_withdrawal WHERE fee_time >= ? AND fee_time < ?',
                [$windowStart, $windowEnd],
            );

            foreach ($rows as $row) {
                $primaryKey = trim((string) ($row['primary_key'] ?? ''));
                $dedupeKey = $primaryKey !== '' ? $primaryKey : 'ID:' . (string) ($row['Id'] ?? '');
                if (isset($seen[$dedupeKey])) {
                    continue;
                }
                $seen[$dedupeKey] = true;

                $shop = trim((string) ($row['shop_name'] ?? ''));
                $channel = self::CHANNEL_NAMES[(string) ($row['channel'] ?? '')] ?? (string) ($row['channel'] ?? '');
                $result[] = $this->row([
                    'date' => $this->date($row['fee_time'] ?? null),
                    'account_short' => $shop,
                    'source_value' => $shop,
                    'source' => 'shop',
                    'process_type' => '店铺提现',
                    'approval_no' => (string) ($row['Id'] ?? ''),
                    'detail' => $this->joinParts([$shop, $channel, trim((string) ($row['fee_name'] ?? ''))]),
                    'income' => $this->toNumber($row['amount'] ?? null),
                    'expense' => 0,
                    'pid' => 'BILL-' . (string) ($row['Id'] ?? ''),
                ]);
            }
        }

        return $result;
    }

    /** @return array<int,array{0:string,1:string}> */
    private function monthWindows(string $from, string $to): array
    {
        if ($from === '' || $to === '' || $from > $to) {
            return [];
        }

        $cursor = \Carbon\CarbonImmutable::parse($from)->startOfMonth();
        $end = \Carbon\CarbonImmutable::parse($to)->addDay()->startOfDay();
        $windows = [];

        while ($cursor->lessThan($end) && count($windows) < 240) {
            $next = $cursor->addMonth();
            $upper = $next->lessThan($end) ? $next : $end;
            $windows[] = [$cursor->toDateString(), $upper->toDateString()];
            $cursor = $next;
        }

        return $windows;
    }

    private function query(): UpstreamReadOnlyQuery
    {
        return $this->queries->forSourceWithTimeout(
            self::SOURCE,
            (int) config('finance_ledger.query_timeout', 120),
        );
    }

    private function row(array $data): array
    {
        return [
            'txn_date' => $data['date'] ?? '',
            'account_short' => (string) ($data['account_short'] ?? ''),
            'source' => (string) ($data['source'] ?? ''),
            'source_value' => (string) ($data['source_value'] ?? ''),
            'process_type' => (string) ($data['process_type'] ?? ''),
            'approval_no' => (string) ($data['approval_no'] ?? ''),
            'detail' => (string) ($data['detail'] ?? ''),
            'income' => round((float) ($data['income'] ?? 0), 2),
            'expense' => round((float) ($data['expense'] ?? 0), 2),
            'pid' => (string) ($data['pid'] ?? ''),
            'seq' => (string) ($data['seq'] ?? ''),
            'acct_code' => (string) ($data['acct_code'] ?? ''),
            'acct_name' => (string) ($data['acct_name'] ?? ''),
        ];
    }

    /** @return array<int,array<string,mixed>> */
    private function paymentRows(?string $value): array
    {
        $rows = $this->parseRows($value);
        if ($rows !== null) {
            $result = [];
            foreach ($rows as $row) {
                $result[] = [
                    'seq' => trim((string) ($row['对应序号'] ?? '')),
                    'amount' => $this->toNumber($row['付款金额'] ?? $row['付款总金额'] ?? null),
                    'code' => trim((string) ($row['科目编码'] ?? '')),
                    'name' => trim((string) ($row['科目名称'] ?? '')),
                    'date' => $this->date($row['打款时间'] ?? null),
                ];
            }

            return $result;
        }

        $result = [];
        foreach ($this->corruptRows((string) $value) as $row) {
            $values = $row['values'];
            if ($values === []) {
                continue;
            }
            $code = '';
            $date = '';
            foreach ($values as $candidate) {
                if ($code === '' && preg_match('/^(1001|1002|1012)(\.\d{2,3})+$/', $candidate) === 1) {
                    $code = $candidate;
                }
                if ($date === '' && preg_match('/^\d{4}-\d{2}-\d{2}/', $candidate) === 1) {
                    $date = substr($candidate, 0, 10);
                }
            }
            $result[] = [
                'seq' => trim((string) ($values[0] ?? '')),
                'amount' => $this->toNumber($values[2] ?? null),
                'code' => $code,
                'name' => trim((string) ($values[4] ?? '')),
                'date' => $date,
            ];
        }

        return $result;
    }

    /** @return array<int,array<string,mixed>> */
    private function detailRows(?string $value, string $processCode): array
    {
        $rows = $this->parseRows($value);
        if ($rows !== null) {
            $result = [];
            foreach ($rows as $row) {
                $result[] = [
                    'seq' => trim((string) ($row['序号'] ?? '')),
                    'use' => trim((string) ($row['用途'] ?? '')),
                    'payee' => trim((string) ($row['收款人全称'] ?? '')),
                    'supplier' => trim((string) ($row['供应商'] ?? '')),
                    'shop' => trim((string) ($row['店铺名称'] ?? '')),
                    'item' => trim((string) ($row['商品ID'] ?? '')),
                    'diff' => $this->toNumber($row['差价'] ?? null),
                    'asset_name' => trim((string) ($row['固定资产名称'] ?? '')),
                    'express' => trim((string) ($row['快递'] ?? '')),
                    'project' => trim((string) ($row['核算项目'] ?? '')),
                    'sale_price' => $this->toNumber($row['出售价格'] ?? null),
                    'pay_time' => $this->date($row['付款时间'] ?? null),
                ];
            }

            return $result;
        }

        $result = [];
        foreach ($this->corruptRows((string) $value) as $row) {
            $fields = $row['fields'];
            $result[] = [
                'seq' => trim((string) ($fields['序号'] ?? ($row['values'][0] ?? ''))),
                'use' => trim((string) ($fields['用途'] ?? '')),
                'payee' => trim((string) ($fields['收款人全称'] ?? '')),
                'supplier' => trim((string) ($fields['供应商'] ?? '')),
                'shop' => trim((string) ($fields['店铺名称'] ?? '')),
                'item' => trim((string) ($fields['商品ID'] ?? '')),
                'diff' => $this->toNumber($fields['差价'] ?? null),
                'asset_name' => trim((string) ($fields['固定资产名称'] ?? '')),
                'express' => trim((string) ($fields['快递'] ?? '')),
                'project' => trim((string) ($fields['核算项目'] ?? '')),
                'sale_price' => $this->toNumber($fields['出售价格'] ?? null),
                'pay_time' => $this->date($fields['付款时间'] ?? null),
            ];
        }

        return $result;
    }

    private function parseRows(?string $value): ?array
    {
        $text = trim((string) $value);
        if ($text === '' || $text === '[]') {
            return [];
        }
        $data = json_decode($text, true);
        if (! is_array($data)) {
            return null;
        }

        $rows = [];
        foreach ($data as $object) {
            $row = [];
            foreach ((array) ($object['rowValue'] ?? []) as $cell) {
                $label = trim((string) ($cell['label'] ?? ''));
                $val = $cell['value'] ?? null;
                if (($val === null || $val === '') && is_array($cell['extendValue'] ?? null)) {
                    $val = $cell['extendValue']['label'] ?? null;
                }
                $row[$label] = $val;
            }
            $rows[] = $row;
        }

        return $rows;
    }

    /** @return array<int,array{fields:array<string,string>,values:array<int,string>}> */
    private function corruptRows(string $value): array
    {
        if (trim($value) === '' || trim($value) === '[]') {
            return [];
        }
        $chunks = explode('{"rowValue":', $value);
        array_shift($chunks);
        $rows = [];
        foreach ($chunks as $chunk) {
            $fields = [];
            if (preg_match_all('/"label":"([^"]{1,40})"/u', $chunk, $labels, PREG_OFFSET_CAPTURE) !== false) {
                foreach ($labels[1] as $label) {
                    $tail = substr($chunk, $label[1] + strlen($label[0]) + 2, 400);
                    if (preg_match('/"value":"([^",}]*)/u', $tail, $match) === 1) {
                        $fields[$label[0]] = $match[1];
                    }
                }
            }
            preg_match_all('/"value":"([^",}]*)/u', $chunk, $values);
            $flat = $values[1] ?? [];
            if ($flat !== []) {
                $fields['序号'] ??= $flat[0];
            }
            $rows[] = ['fields' => $fields, 'values' => $flat];
        }

        return $rows;
    }

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

        return sprintf('%04d-%02d-%02d', $matches[1], $matches[2], $matches[3]);
    }

    private function toNumber(mixed $value): float
    {
        if (is_int($value) || is_float($value)) {
            return round((float) $value, 2);
        }
        $text = str_replace([',', '，', '￥', '¥', ' '], '', trim((string) ($value ?? '')));
        if ($text === '' || $text === '-' || $text === '/') {
            return 0.0;
        }

        return is_numeric($text) ? round((float) $text, 2) : 0.0;
    }

    /** @return array<int,string> */
    private function seqTokens(string $seq): array
    {
        return array_values(array_filter(preg_split('/[-,，、\s]+/u', $seq) ?: []));
    }

    private function unique(array $values): string
    {
        $unique = [];
        foreach ($values as $value) {
            $value = trim((string) $value);
            if ($value !== '' && ! in_array($value, $unique, true)) {
                $unique[] = $value;
            }
        }

        return implode('、', $unique);
    }

    private function joinParts(array $parts): string
    {
        $cleaned = [];
        foreach ($parts as $part) {
            $part = trim((string) $part);
            if ($part !== '' && ($cleaned === [] || end($cleaned) !== $part)) {
                $cleaned[] = $part;
            }
        }

        return implode('；', $cleaned);
    }
}