feat: 支持企业认证后自动生成电子公章

Co-authored-by: Cursor <cursoragent@cursor.com>

seal.go

@@ -273,12 +273,8 @@ func (c *Client) CompanySignQualificationsFor(company CompanyLocateParams) (*Com
 	return &resp.Result, nil
 }
 
-// CompanySealCreatePageURL 获取制作电子公章的页面链接（method=page）。
-func (c *Client) CompanySealCreatePageURL(company CompanyLocateParams, companyDisplayName, sealName, operatorMobile string) (string, error) {
-	if sealName == "" || operatorMobile == "" {
-		return "", ErrInvalidParams
-	}
-	displayName := companyDisplayName
+func locateCompany(company CompanyLocateParams, companyDisplayName string) *common.Company {
+	displayName := strings.TrimSpace(companyDisplayName)
 	if displayName == "" {
 		displayName = company.Name
 	}
@@ -291,29 +287,82 @@ func (c *Client) CompanySealCreatePageURL(company CompanyLocateParams, companyDi
 			comp.Id = &id
 		}
 	}
-	modify := true
+	return comp
+}
+
+func isSealAlreadyExists(err error) bool {
+	if err == nil {
+		return false
+	}
+	msg := err.Error()
+	return strings.Contains(msg, "已存在") || strings.Contains(msg, "重复")
+}
+
+func (c *Client) createCompanySeal(company CompanyLocateParams, companyDisplayName, sealName, operatorMobile, method string) (*v2seal_response.V2SealCreateResponse, error) {
+	if sealName == "" || operatorMobile == "" {
+		return nil, ErrInvalidParams
+	}
 	req := v2seal_request.V2SealCreateRequest{
 		BusinessType:     "ELECTRONIC",
 		SealType:         "COMPANY",
-		Method:           "page",
+		Method:           method,
 		Name:             sealName,
 		SealCategoryName: "公章",
-		Company:          comp,
+		Company:          locateCompany(company, companyDisplayName),
 		OperatorInfo: &common.UserInfoRequest{
 			Mobile: operatorMobile,
 		},
-		Modify: &modify,
+	}
+	if method == "auto" {
+		req.Spec = "CIRCULAR_42"
+		req.CustomSealAttribute = &common.CustomSealAttribute{
+			SealCategoryType: "enterprise",
+		}
+	}
+	if method == "page" {
+		modify := true
+		req.Modify = &modify
 	}
 	var resp sealCreateResp
 	if err := c.postJSON("/v2/seal/create", req, &resp); err != nil {
-		return "", err
+		return nil, err
 	}
 	if err := resp.err(); err != nil {
+		return nil, err
+	}
+	return &resp.Result, nil
+}
+
+// EnsureCompanyElectronicSeal 若法人单位尚无电子公章，则按公章样式自动生成一枚。
+func (c *Client) EnsureCompanyElectronicSeal(company CompanyLocateParams, companyDisplayName, operatorMobile string) error {
+	if quals, err := c.CompanySignQualificationsFor(company); err == nil && quals != nil && quals.ElectronicSeal {
+		return nil
+	}
+	if seals, err := c.ListCompanyElectronicSeals(company); err == nil && len(seals) > 0 {
+		return nil
+	}
+	return c.CreateCompanyElectronicSealAuto(company, companyDisplayName, operatorMobile)
+}
+
+// CreateCompanyElectronicSealAuto 自动生成一枚圆形电子公章（method=auto）。
+func (c *Client) CreateCompanyElectronicSealAuto(company CompanyLocateParams, companyDisplayName, operatorMobile string) error {
+	sealName := DeriveCompanySealName(companyDisplayName)
+	_, err := c.createCompanySeal(company, companyDisplayName, sealName, operatorMobile, "auto")
+	if err != nil && isSealAlreadyExists(err) {
+		return nil
+	}
+	return err
+}
+
+// CompanySealCreatePageURL 获取制作电子公章的页面链接（method=page）。
+func (c *Client) CompanySealCreatePageURL(company CompanyLocateParams, companyDisplayName, sealName, operatorMobile string) (string, error) {
+	result, err := c.createCompanySeal(company, companyDisplayName, sealName, operatorMobile, "page")
+	if err != nil {
 		return "", err
 	}
-	url := resp.Result.PageUrl
+	url := result.PageUrl
 	if url == "" {
-		url = resp.Result.LocalPageUrl
+		url = result.LocalPageUrl
 	}
 	if url == "" {
 		return "", ErrSealCreatePageUnavailable