<?php

namespace Modules\EcommerceFinance\Services\Jushuitan;

use Illuminate\Database\ConnectionInterface;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Throwable;

/**
 * 聚水潭发货（销售出库单）同步器。
 *
 * 复刻工作平台 ErpTradeData 的两步拉取：
 *   1) erp.sctrade.query 按修改时间窗口分页拉出库单列表 -> 得到每单 id / modified
 *   2) erp.sradesku.query 按 tradeId 拉单据完整明细 -> 主单 + items + skus + receiver
 * 增量以 modified 为水位，带重叠窗口；按 source_id upsert 去重。
 *
 * 注意：奇门返回的 JSON 字段路径以聚水潭实际返回为准，本骨架的取值点已用
 * pluck() 集中，联调时按真实返回调整即可，不影响主流程结构。
 */
class ShippingDataSynchronizer
{
    private const DATASET = 'jst.sctrade';

    private readonly ConnectionInterface $db;

    public function __construct(
        private readonly QimenClient $client,
        private readonly array $config,
    ) {
        $this->db = DB::connection($config['connection'] ?? 'business_mirror');
    }

    public static function make(): self
    {
        return new self(QimenClient::fromConfig(), (array) config('jushuitan'));
    }

    /**
     * 执行一次增量同步。
     *
     * @param ?Carbon $from 起始修改时间；默认取水位 - overlap
     * @param ?Carbon $to   截止修改时间；默认 now
     */
    public function syncIncremental(?Carbon $from = null, ?Carbon $to = null): array
    {
        $sync = $this->config['sync'] ?? [];
        $overlap = max((int) ($sync['overlap_hours'] ?? 48), 0);
        $limit = max((int) ($sync['page_limit'] ?? 100), 1);
        $maxPages = (int) ($sync['max_pages'] ?? 0);

        $state = $this->state();
        $from ??= isset($state['watermark']) && $state['watermark']
            ? Carbon::parse($state['watermark'])->subHours($overlap)
            : now()->subHours(max((int) ($sync['window_hours'] ?? 24), 1));
        $to ??= now();

        $this->markRunning();
        $processed = 0;
        $maxModified = $from;

        try {
            $page = 1;
            do {
                $list = $this->client->call($this->method('sctrade_list'), [
                    'updateSt' => $from->format('Y-m-d H:i:s'),
                    'updateEt' => $to->format('Y-m-d H:i:s'),
                    'limit'    => $limit,
                    'page'     => $page,
                ]);

                $orders = $this->pluckOrders($list);
                foreach ($orders as $order) {
                    $id = $this->pluckId($order);
                    if ($id === null) {
                        continue;
                    }
                    $detail = $this->client->call($this->method('sctrade_detail'), ['tradeId' => $id]);
                    $data = $detail['data'] ?? $detail;
                    $this->upsertOrder($data);
                    $processed++;

                    $modified = $this->pluckModified($data);
                    if ($modified && (! $maxModified || $modified->gt($maxModified))) {
                        $maxModified = $modified;
                    }
                }

                $hasNext = count($orders) >= $limit && ($maxPages === 0 || $page < $maxPages);
                $page++;
            } while ($hasNext);

            $this->markSucceeded($maxModified);
        } catch (Throwable $e) {
            $this->markFailed($e->getMessage());
            report($e);
            throw $e;
        }

        return ['processed' => $processed, 'watermark' => optional($maxModified)->toDateTimeString()];
    }

    /* ---------------- upsert（按 source_id 去重） ---------------- */

    private function upsertOrder(array $data): void
    {
        $sourceId = $this->pluckId($data);
        if ($sourceId === null) {
            return;
        }
        $now = now();

        $this->db->table('jst_sctrade')->updateOrInsert(
            ['source_id' => $sourceId],
            [
                'sourceno'         => $data['so_id'] ?? ($data['sourceno'] ?? null),
                'io_id'            => $data['io_id'] ?? null,
                'shop_id'          => $data['shop_id'] ?? null,
                'shopcode'         => $data['shopcode'] ?? null,
                'wms_co_id'        => $data['wms_co_id'] ?? null,
                'platform'         => $data['platform'] ?? null,
                'status'           => $data['status'] ?? null,
                'paytime'          => $this->ts($data['pay_date'] ?? ($data['paytime'] ?? null)),
                'sended'           => $this->ts($data['sended'] ?? null),
                'created'          => $this->ts($data['created'] ?? null),
                'modified'         => $this->ts($data['modified'] ?? null),
                'receiverstate'    => $data['receiver_state'] ?? ($data['receiverstate'] ?? null),
                'receivercity'     => $data['receiver_city'] ?? ($data['receivercity'] ?? null),
                'receiverdistrict' => $data['receiver_district'] ?? ($data['receiverdistrict'] ?? null),
                'receivername'     => $data['receiver_name'] ?? ($data['receivername'] ?? null),
                'receivermobile'   => $data['receiver_mobile'] ?? ($data['receivermobile'] ?? null),
                'receiverphone'    => $data['receiver_phone'] ?? ($data['receiverphone'] ?? null),
                'receiveraddress'  => $data['receiver_address'] ?? ($data['receiveraddress'] ?? null),
                'weight'           => $data['weight'] ?? null,
                'freight'          => $data['freight'] ?? null,
                'raw_json'         => json_encode($data, JSON_UNESCAPED_UNICODE),
                'synced_at'        => $now,
            ]
        );

        foreach (($data['items'] ?? []) as $item) {
            $iid = $item['id'] ?? null;
            if ($iid === null) {
                continue;
            }
            $this->db->table('jst_sctrade_items')->updateOrInsert(
                ['source_id' => $iid],
                [
                    'hid'         => $sourceId,
                    'oid'         => $item['oid'] ?? null,
                    'shopproid'   => $item['shop_i_id'] ?? ($item['shopproid'] ?? null),
                    'shoprocode'  => $item['sku_id'] ?? ($item['shoprocode'] ?? null),
                    'shopskucode' => $item['shopskucode'] ?? null,
                    'shoproname'  => $item['name'] ?? ($item['shoproname'] ?? null),
                    'qty'         => $item['qty'] ?? null,
                    'raw_json'    => json_encode($item, JSON_UNESCAPED_UNICODE),
                    'synced_at'   => $now,
                ]
            );
        }

        foreach (($data['tradeskus'] ?? ($data['skus'] ?? [])) as $sku) {
            $sid = $sku['id'] ?? null;
            if ($sid === null) {
                continue;
            }
            $this->db->table('jst_sctrade_skus')->updateOrInsert(
                ['source_id' => $sid],
                [
                    'hid'               => $sourceId,
                    'procode'           => $sku['sku_id'] ?? ($sku['procode'] ?? null),
                    'sku_id'            => $sku['sku_id'] ?? null,
                    'proname'           => $sku['name'] ?? ($sku['proname'] ?? null),
                    'scmname'           => $sku['scmname'] ?? null,
                    'postcode'          => $sku['postcode'] ?? ($sku['l_id'] ?? null),
                    'logistics_company' => $sku['logistics_company'] ?? null,
                    'qty'               => $sku['qty'] ?? null,
                    'sended'            => $this->ts($sku['sended'] ?? null),
                    'raw_json'          => json_encode($sku, JSON_UNESCAPED_UNICODE),
                    'synced_at'         => $now,
                ]
            );
        }

        $receiver = $data['tradeReceiver'] ?? ($data['receiver'] ?? null);
        if (is_array($receiver)) {
            $this->db->table('jst_sctrade_receiver')->updateOrInsert(
                ['hid' => $sourceId],
                [
                    'receivername'     => $receiver['receivername'] ?? ($receiver['name'] ?? null),
                    'receiverstate'    => $receiver['receiverstate'] ?? null,
                    'receivercity'     => $receiver['receivercity'] ?? null,
                    'receiverdistrict' => $receiver['receiverdistrict'] ?? null,
                    'receiveraddress'  => $receiver['receiveraddress'] ?? null,
                    'receivermobile'   => $receiver['receivermobile'] ?? null,
                    'receiverphone'    => $receiver['receiverphone'] ?? null,
                    'receiverzip'      => $receiver['receiverzip'] ?? null,
                    'raw_json'         => json_encode($receiver, JSON_UNESCAPED_UNICODE),
                    'synced_at'        => $now,
                ]
            );
        }
    }

    /* ---------------- 返回体取值点（按聚水潭实际返回调整） ---------------- */

    /** @return array<int,array> */
    private function pluckOrders(array $list): array
    {
        $data = $list['data'] ?? $list;
        return $data['datas'] ?? ($data['orders'] ?? ($data['list'] ?? []));
    }

    private function pluckId(array $order): ?int
    {
        $id = $order['id'] ?? ($order['io_id'] ?? null);
        return $id === null ? null : (int) $id;
    }

    private function pluckModified(array $data): ?Carbon
    {
        return $this->ts($data['modified'] ?? null);
    }

    private function ts(mixed $value): ?Carbon
    {
        if ($value === null || $value === '' ) {
            return null;
        }
        try {
            if (is_numeric($value)) {
                $v = (int) $value;
                return Carbon::createFromTimestamp($v > 9999999999 ? intdiv($v, 1000) : $v);
            }
            return Carbon::parse((string) $value);
        } catch (Throwable) {
            return null;
        }
    }

    /* ---------------- 同步状态 ---------------- */

    private function state(): array
    {
        $row = $this->db->table('jst_sync_state')->where('dataset_key', self::DATASET)->first();
        return $row ? (array) $row : [];
    }

    private function markRunning(): void
    {
        $this->db->table('jst_sync_state')->updateOrInsert(
            ['dataset_key' => self::DATASET],
            ['status' => 'running', 'last_started_at' => now(), 'updated_at' => now(), 'created_at' => now()]
        );
    }

    private function markSucceeded(?Carbon $watermark): void
    {
        $update = ['status' => 'succeeded', 'last_succeeded_at' => now(), 'last_error' => null, 'updated_at' => now()];
        if ($watermark) {
            $update['watermark'] = $watermark;
        }
        $this->db->table('jst_sync_state')->where('dataset_key', self::DATASET)->update($update);
    }

    private function markFailed(string $error): void
    {
        $this->db->table('jst_sync_state')->where('dataset_key', self::DATASET)->update([
            'status' => 'failed', 'last_error' => mb_substr($error, 0, 1000), 'updated_at' => now(),
        ]);
    }

    private function method(string $key): string
    {
        return $this->config['methods'][$key] ?? '';
    }
}