79 lines
2.4 KiB
Go
79 lines
2.4 KiB
Go
package payment
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import (
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"encoding/json"
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"fmt"
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"time"
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)
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// Refund 申请退款
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// 对齐 YouChuKoffee 的 OrderRefund 流程：
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// 1. 构建完整 {head, body} 结构（body 包含 busiMainId, reqTransTime, data）
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// 2. 整个 {head, body} 一起加密
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// 3. head 同时作为 HTTP Header 明文传输
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func (c *Client) Refund(req RefundRequest) (*RefundResponse, error) {
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now := time.Now().Format("20060102150405")
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BusiMainId := now + RandomNumber(10)
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// 构建完整 request（head+body 一起加密，对齐 YouChuKoffee）
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requestBody := map[string]interface{}{
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"head": map[string]string{
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"partnerTxSriNo": BusiMainId,
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"reqTime": now,
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"method": "b2c.gatewaypay.orderRefund",
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"version": "1",
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"merchantId": c.cfg.MerchantId,
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"appID": c.cfg.AppID,
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"accessType": "API",
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"reserve": "",
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},
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"body": map[string]interface{}{
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"busiMainId": BusiMainId,
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"reqTransTime": now,
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"data": map[string]string{
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"txnCode": "1003",
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"sourceId": "16",
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"reqTraceId": req.OrderNo + now[4:14], // MMDDHHmmss 10位后缀
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"reqDate": now, // 14 位 YYYYMMDDHHmmss
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"mchtNo": c.cfg.MchtNo,
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"orgTxnSeq": req.OrgTxnSeq,
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"txnAmt": req.Price,
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"orgTxnAmt": req.Price,
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"refundDesc": "用户主动退款",
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},
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},
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}
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// 整个 {head, body} 一起加密
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encryptedReq, err := EncryptRequest(requestBody, c.cfg)
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if err != nil {
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return nil, fmt.Errorf("加密请求失败: %v", err)
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}
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encryptedBytes, _ := json.Marshal(encryptedReq)
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url := c.cfg.OrderHost + c.cfg.MerchantId + ".htm?partnerTxSriNo=" + BusiMainId
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// head 同时作为 HTTP Header 明文传输
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head := requestBody["head"].(map[string]string)
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body, err := c.doPost(url, head, encryptedBytes)
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if err != nil {
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return nil, err
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}
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responseData, err := c.DecryptResponse(string(body), false)
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if err != nil {
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return nil, fmt.Errorf("解密响应失败: %v，原始响应: %s", err, string(body))
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}
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var result RefundResponse
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if err := json.Unmarshal([]byte(responseData), &result); err != nil {
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return nil, fmt.Errorf("解析响应失败: %v，响应内容: %s", err, responseData)
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}
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if result.RespCode != "" && result.RespCode != "0000" && result.RespCode != "00" {
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return nil, fmt.Errorf("退款申请失败，错误码: %s，错误信息: %s", result.RespCode, result.RespMsg)
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}
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return &result, nil
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}
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