<?php

namespace addons\shopro_wechat_trade\library;

use addons\shopro\model\OrderItem;

class WxShippingPayload
{
    protected static $logisticsMap = [
        'express'  => 1,
        'store'    => 2,
        'autosend' => 3,
        'selfetch' => 4,
    ];

    public static function mapLogisticsType($dispatchType)
    {
        return self::$logisticsMap[$dispatchType] ?? 1;
    }

    public static function buildUploadPayload($order, array $items, $triggerItem = null)
    {
        $transactionId = WxOrderContext::resolveTransactionId($order);
        $openid = WxOrderContext::resolveOpenid($order);
        if ($transactionId === '') {
            throw new \RuntimeException('缺少微信 transaction_id，无法同步发货');
        }
        if ($openid === '') {
            throw new \RuntimeException('缺少用户 openid，无法同步发货');
        }

        $shippableItems = self::filterShippableItems($items);
        if (!$shippableItems) {
            throw new \RuntimeException('没有可同步的已发货商品');
        }

        $allItems = self::filterAllActiveItems($items);
        $deliveryMode = count($shippableItems) >= count($allItems) ? 1 : 2;

        $logisticsType = self::mapLogisticsType($triggerItem['dispatch_type'] ?? ($shippableItems[0]['dispatch_type'] ?? 'express'));
        $shippingList = [];
        foreach ($shippableItems as $item) {
            $shippingList[] = self::buildShippingListItem($item, $order);
        }

        return [
            'payload' => [
                'order_key' => [
                    'order_number_type' => 2,
                    'transaction_id'    => $transactionId,
                ],
                'logistics_type' => $logisticsType,
                'delivery_mode'  => $deliveryMode,
                'shipping_list'  => $shippingList,
                'upload_time'    => self::formatUploadTime(time()),
                'payer'          => ['openid' => $openid],
            ],
            'meta' => [
                'transaction_id' => $transactionId,
                'delivery_mode'  => $deliveryMode,
                'logistics_type' => $logisticsType,
            ],
        ];
    }

    public static function buildConfirmPayload($order)
    {
        $transactionId = WxOrderContext::resolveTransactionId($order);
        if ($transactionId === '') {
            throw new \RuntimeException('缺少微信 transaction_id，无法同步确认收货');
        }
        $confirmTime = time();
        $ext = is_array($order['ext_arr'] ?? null) ? $order['ext_arr'] : [];
        if (!empty($ext['confirm_time'])) {
            $confirmTime = intval($ext['confirm_time']);
        }

        return [
            'order_key' => [
                'order_number_type' => 2,
                'transaction_id'    => $transactionId,
            ],
            'received_time' => self::formatUploadTime($confirmTime),
        ];
    }

    protected static function buildShippingListItem(array $item, $order)
    {
        $dispatchType = $item['dispatch_type'] ?? 'express';
        $desc = mb_substr($item['goods_title'] ?? '商城商品', 0, 120);
        $entry = ['item_desc' => $desc];

        if (in_array($dispatchType, ['express', 'store'], true)) {
            $trackingNo = trim((string) ($item['express_no'] ?? ''));
            $expressCode = WxExpressMapper::toWechatCode($item['express_code'] ?? '');
            if ($trackingNo === '') {
                throw new \RuntimeException('快递发货缺少物流单号: item#' . ($item['id'] ?? ''));
            }
            if ($expressCode === '') {
                throw new \RuntimeException('快递公司编码未映射: ' . ($item['express_code'] ?? ''));
            }
            $entry['tracking_no'] = $trackingNo;
            $entry['express_company'] = $expressCode;
        } else {
            $entry['tracking_no'] = $order['order_sn'] ?? ('ITEM' . ($item['id'] ?? ''));
        }

        if (!empty($order['phone'])) {
            $entry['contact'] = [
                'receiver_contact' => self::maskPhone($order['phone']),
            ];
        }

        return $entry;
    }

    protected static function filterShippableItems(array $items)
    {
        $result = [];
        foreach ($items as $item) {
            $item = is_object($item) && method_exists($item, 'toArray') ? $item->toArray() : (array) $item;
            if (intval($item['dispatch_status'] ?? 0) < OrderItem::DISPATCH_STATUS_SENDED) {
                continue;
            }
            if (in_array(intval($item['refund_status'] ?? 0), [OrderItem::REFUND_STATUS_OK, OrderItem::REFUND_STATUS_FINISH], true)) {
                continue;
            }
            $result[] = $item;
        }
        return $result;
    }

    protected static function filterAllActiveItems(array $items)
    {
        $result = [];
        foreach ($items as $item) {
            $item = is_object($item) && method_exists($item, 'toArray') ? $item->toArray() : (array) $item;
            if (in_array(intval($item['refund_status'] ?? 0), [OrderItem::REFUND_STATUS_OK, OrderItem::REFUND_STATUS_FINISH], true)) {
                continue;
            }
            $result[] = $item;
        }
        return $result;
    }

    protected static function formatUploadTime($timestamp)
    {
        $dt = new \DateTime('@' . intval($timestamp));
        $dt->setTimezone(new \DateTimeZone('Asia/Shanghai'));
        return $dt->format('Y-m-d\TH:i:s.vP');
    }

    protected static function maskPhone($phone)
    {
        $phone = trim((string) $phone);
        if (strlen($phone) >= 11) {
            return substr($phone, 0, 3) . '****' . substr($phone, -4);
        }
        return $phone;
    }
}