Fix PrintGood.Cnt type: int -> float64 to match API response

Vchasno API returns warnings as array of objects {code, wtxt}, not strings.
This caused unmarshal errors on successful responses with warnings.

api/client.go

@@ -1,17 +1,48 @@
 package api
 
-import "resty.dev/v3"
+import (
+	"crypto/tls"
+
+	"resty.dev/v3"
+)
 
 type Client struct {
-	token      string
+	token          string
-	resty      *resty.Client
+	device         string
-	apiBaseURL string
+	isDM           bool
+	resty          *resty.Client
+	apiBaseURL     string
+	fiscalEndpoint string
 }
 
 func NewClient(token string) *Client {
 	return &Client{
-		token:      token,
+		token:          token,
-		resty:      resty.New(),
+		isDM:           false,
-		apiBaseURL: "https://kasa.vchasno.ua/api/v3",
+		resty:          resty.New(),
+		apiBaseURL:     "https://kasa.vchasno.ua/api/v3",
+		fiscalEndpoint: "/fiscal/execute",
+	}
+}
+
+func NewDMClient(token, dmURL, device string) *Client {
+	restyClient := resty.New()
+	restyClient.SetTLSClientConfig(&tls.Config{
+		MinVersion: tls.VersionTLS12,
+		CipherSuites: []uint16{
+			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
+		},
+	})
+
+	return &Client{
+		token:          token,
+		device:         device,
+		isDM:           true,
+		resty:          restyClient,
+		apiBaseURL:     dmURL,
+		fiscalEndpoint: "/dm/execute",
 	}
 }

api/fiscal.go

@@ -5,40 +5,69 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"log"
 )
 
+type APIError struct {
+	Code    int
+	Message string
+}
+
+func (e *APIError) Error() string {
+	return fmt.Sprintf("vchasno api error %d: %s", e.Code, e.Message)
+}
+
 func (c *Client) executeRequest(ctx context.Context, request FiscalRequest, response interface{}) error {
+	request.Device = c.device
+
+	if c.isDM {
+		request.Ver = 6
+		request.Type = 1
+	}
+
 	reqJson, err := json.Marshal(request)
 	if err != nil {
 		return fmt.Errorf("failed to marshal request: %w", err)
 	}
-	fmt.Println(string(reqJson))
+
+	url := c.apiBaseURL + c.fiscalEndpoint
+	log.Printf("[VCHASNO] POST %s", url)
+	log.Printf("[VCHASNO] Request: %s", string(reqJson))
 
 	resp, err := c.resty.R().
 		SetContext(ctx).
 		SetHeader("Authorization", c.token).
+		SetHeader("Content-Type", "application/json").
 		SetBody(reqJson).
-		Post(c.apiBaseURL + "/fiscal/execute")
+		Post(url)
 
 	if err != nil {
 		return fmt.Errorf("request failed: %w", err)
 	}
 
-	if resp.IsError() {
-		return fmt.Errorf("api error: %v", resp.Error())
-	}
-
-	if resp.StatusCode() != 200 {
-		return fmt.Errorf("unexpected status code: %d", resp.StatusCode())
-	}
-
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return fmt.Errorf("failed to read response: %w", err)
 	}
 
+	log.Printf("[VCHASNO] Response (status %d): %s", resp.StatusCode(), string(body))
+
+	if resp.StatusCode() != 200 {
+		return fmt.Errorf("api error (status %d): %s", resp.StatusCode(), string(body))
+	}
+
 	if err := json.Unmarshal(body, response); err != nil {
-		return fmt.Errorf("failed to unmarshal response: %w", err)
+		return fmt.Errorf("failed to unmarshal response: %w, body: %s", err, string(body))
+	}
+
+	var baseResp BaseResponse
+	if err := json.Unmarshal(body, &baseResp); err == nil {
+		if baseResp.HasError() {
+			return &APIError{
+				Code:    baseResp.Res,
+				Message: baseResp.Errortxt,
+			}
+		}
 	}
 
 	return nil
@@ -47,8 +76,7 @@ func (c *Client) executeRequest(ctx context.Context, request FiscalRequest, resp
 func (c *Client) OpenShift(ctx context.Context, cashier string) (*SellResponse, error) {
 	request := FiscalRequest{
 		Fiscal: Fiscal{
-			Task:    TaskOpenShift,
+			Task: TaskOpenShift,
-			Cashier: cashier,
 		},
 	}
 
@@ -63,8 +91,7 @@ func (c *Client) OpenShift(ctx context.Context, cashier string) (*SellResponse,
 func (c *Client) CloseShift(ctx context.Context, cashier string) (*ZReportResponse, error) {
 	request := FiscalRequest{
 		Fiscal: Fiscal{
-			Task:    TaskZReport,
+			Task: TaskZReport,
-			Cashier: cashier,
 		},
 	}
 
@@ -101,12 +128,6 @@ func (c *Client) Sell(ctx context.Context, params SellParams) (*SellResponse, er
 		request.Userinfo = *params.Userinfo
 	}
 
-	reqJson, err := json.Marshal(request)
-	if err != nil {
-		return nil, err
-	}
-	fmt.Println(string(reqJson))
-
 	var response SellResponse
 	if err := c.executeRequest(ctx, request, &response); err != nil {
 		return nil, err

api/requests.go

@@ -1,7 +1,11 @@
 package api
 
 type FiscalRequest struct {
-	Source   string   `json:"source"`
+	Ver      int      `json:"ver,omitempty"`
+	Source   string   `json:"source,omitempty"`
+	Device   string   `json:"device,omitempty"`
+	Tag      string   `json:"tag,omitempty"`
+	Type     int      `json:"type,omitempty"`
 	Userinfo Userinfo `json:"userinfo,omitempty"`
 	Fiscal   Fiscal   `json:"fiscal"`
 }
@@ -13,7 +17,7 @@ type Userinfo struct {
 
 type Fiscal struct {
 	Task    int      `json:"task"`
-	Cashier string   `json:"cashier"`
+	Cashier string   `json:"cashier,omitempty"`
 	Receipt *Receipt `json:"receipt,omitempty"`
 }
 

api/responses.go

@@ -4,36 +4,178 @@ type BaseResponse struct {
 	Task       int         `json:"task"`
 	Type       int         `json:"type"`
 	Ver        int         `json:"ver"`
+	RespVer    int         `json:"resp_ver"`
 	Source     string      `json:"source"`
 	Device     string      `json:"device"`
 	Tag        string      `json:"tag"`
+	TaskStatus int         `json:"task_status"`
 	Dt         string      `json:"dt"`
 	Res        int         `json:"res"`
 	ResAction  int         `json:"res_action"`
 	Errortxt   string      `json:"errortxt"`
-	Warnings   []string    `json:"warnings"`
+	AqErrortxt string      `json:"aq_errortxt"`
 	ErrorExtra interface{} `json:"error_extra"`
 }
 
+func (r *BaseResponse) HasError() bool {
+	return r.Res != 0
+}
+
+func (r *BaseResponse) Error() string {
+	if r.Errortxt != "" {
+		return r.Errortxt
+	}
+	return ""
+}
+
 type SellResponse struct {
 	BaseResponse
 	Info SellInfo `json:"info"`
 }
 
 type SellInfo struct {
-	Task      int     `json:"task"`
+	Task           int          `json:"task"`
-	Fisid     string  `json:"fisid"`
+	Fisid          string       `json:"fisid"`
-	Dataid    int     `json:"dataid"`
+	Dataid         int          `json:"dataid"`
-	Doccode   string  `json:"doccode"`
+	Doccode        string       `json:"doccode"`
-	Dt        string  `json:"dt"`
+	Docno          interface{}  `json:"docno"`
-	Cashier   string  `json:"cashier"`
+	Dt             string       `json:"dt"`
-	Dtype     int     `json:"dtype"`
+	Cashier        string       `json:"cashier"`
-	Isprint   int     `json:"isprint"`
+	Dtype          int          `json:"dtype"`
-	Isoffline bool    `json:"isoffline"`
+	Isprint        int          `json:"isprint"`
-	Safe      float64 `json:"safe"`
+	Ispay          int          `json:"ispay"`
-	ShiftLink int     `json:"shift_link"`
+	Isoffline      bool         `json:"isoffline"`
-	Docno     int     `json:"docno"`
+	Safe           float64      `json:"safe"`
-	Cancelid  string  `json:"cancelid,omitempty"`
+	SafeStartShift float64      `json:"safe_start_shift"`
+	ShiftLink      int          `json:"shift_link"`
+	ShiftPrevLink  int          `json:"shift_prev_link"`
+	ShiftID        string       `json:"shift_id"`
+	OpenShiftDt    string       `json:"open_shift_dt"`
+	Cancelid       string       `json:"cancelid,omitempty"`
+	VacantOffNums  int          `json:"vacant_off_nums"`
+	Devinfo        string       `json:"devinfo"`
+	DfsLocalNumber string       `json:"dfs_local_number"`
+	Userdata1      string       `json:"userdata1"`
+	Userdata2      string       `json:"userdata2"`
+	Userdata3      string       `json:"userdata3"`
+	QR             string       `json:"qr"`
+	QR1            string       `json:"qr1"`
+	Billing        *Billing     `json:"billing,omitempty"`
+	Printheader    *Printheader `json:"printheader,omitempty"`
+	Printinfo      *Printinfo   `json:"printinfo,omitempty"`
+}
+
+type Billing struct {
+	PaidDateTo                string `json:"paid_date_to"`
+	EnoughToRenewSubscription int    `json:"enough_to_renew_subscription"`
+}
+
+type Printheader struct {
+	Name           string `json:"name"`
+	Shopname       string `json:"shopname"`
+	Shoptype       string `json:"shoptype"`
+	Shopad         string `json:"shopad"`
+	VatCode        string `json:"vat_code"`
+	FisCode        string `json:"fis_code"`
+	Dt             string `json:"dt"`
+	OpenShiftDt    string `json:"open_shift_dt"`
+	IsOffline      bool   `json:"isOffline"`
+	Fisid          string `json:"fisid"`
+	Manuf          string `json:"manuf"`
+	Cashier        string `json:"cashier"`
+	Task           int    `json:"task"`
+	DfsLocalNumber string `json:"dfs_local_number"`
+}
+
+type Printinfo struct {
+	Name           string      `json:"name"`
+	Shopname       string      `json:"shopname"`
+	Shoptype       string      `json:"shoptype"`
+	Shopad         string      `json:"shopad"`
+	VatCode        string      `json:"vat_code"`
+	FisCode        string      `json:"fis_code"`
+	DfsLocalNumber string      `json:"dfs_local_number"`
+	Fisn           string      `json:"fisn"`
+	Dt             string      `json:"dt"`
+	OpenShiftDt    string      `json:"open_shift_dt"`
+	QR             string      `json:"qr"`
+	QR1            string      `json:"qr1"`
+	IsOffline      bool        `json:"isOffline"`
+	Mac            string      `json:"mac"`
+	Fisid          string      `json:"fisid"`
+	Manuf          string      `json:"manuf"`
+	Cashier        string      `json:"cashier"`
+	Task           int         `json:"task"`
+	Subtask        int         `json:"subtask"`
+	FcId           string      `json:"fcId"`
+	Fisdoctype     string      `json:"fisdoctype"`
+	CommentDown    string      `json:"comment_down"`
+	CommentUp      string      `json:"comment_up"`
+	Safe           float64     `json:"safe"`
+	SafeStartShift float64     `json:"safe_start_shift"`
+	Docno          string      `json:"docno"`
+	Userdata1      string      `json:"userdata1"`
+	Userdata2      string      `json:"userdata2"`
+	Userdata3      string      `json:"userdata3"`
+	Crc32          int         `json:"crc32"`
+	SumReceipt     float64     `json:"sum_receipt"`
+	SumTopay       float64     `json:"sum_topay"`
+	Round          float64     `json:"round"`
+	Goods          []PrintGood `json:"goods"`
+	Pays           []PrintPay  `json:"pays"`
+	Taxes          []PrintTax  `json:"taxes"`
+}
+
+type PrintGood struct {
+	Name          string   `json:"name"`
+	Code          string   `json:"code"`
+	Code1         string   `json:"code1"`
+	Code2         string   `json:"code2"`
+	CodeA         string   `json:"code_a"`
+	CodeAa        []string `json:"code_aa"`
+	Cnt           float64  `json:"cnt"`
+	Price         float64  `json:"price"`
+	Cost          float64  `json:"cost"`
+	CostAfterDisc float64  `json:"cost_after_disc"`
+	Disc          float64  `json:"disc"`
+	DiscType      int      `json:"disc_type"`
+	Taxgrp        int      `json:"taxgrp"`
+	Taxlit        string   `json:"taxlit"`
+	Comment       string   `json:"comment"`
+	Commission    float64  `json:"commission"`
+}
+
+type PrintPay struct {
+	PayClass           int     `json:"pay_class"`
+	IsTerminal         bool    `json:"is_terminal"`
+	Type               int     `json:"type"`
+	Typen              string  `json:"typen"`
+	Sum                float64 `json:"sum"`
+	SumOrig            float64 `json:"sum_orig"`
+	Commission         float64 `json:"commission"`
+	Currency           string  `json:"currency"`
+	OperType           string  `json:"oper_type"`
+	ShowAdditionalInfo bool    `json:"show_additional_info"`
+	Info               string  `json:"info"`
+	Comment            string  `json:"comment"`
+	ReceivedSum        float64 `json:"received_sum"`
+	Change             float64 `json:"change"`
+}
+
+type PrintTax struct {
+	GrCode       int     `json:"gr_code"`
+	BaseSum      float64 `json:"base_sum"`
+	TaxName      string  `json:"tax_name"`
+	TaxFname     string  `json:"tax_fname"`
+	TaxLit       string  `json:"tax_lit"`
+	TaxPercent   float64 `json:"tax_percent"`
+	BaseTaxSum   float64 `json:"base_tax_sum"`
+	TaxSum       float64 `json:"tax_sum"`
+	ExName       string  `json:"ex_name"`
+	ExPercent    float64 `json:"ex_percent"`
+	BaseExSum    float64 `json:"base_ex_sum"`
+	ExSum        float64 `json:"ex_sum"`
+	ActivationDt string  `json:"activation_dt"`
 }
 
 type ZReportResponse struct {
@@ -42,74 +184,119 @@ type ZReportResponse struct {
 }
 
 type ZReportInfo struct {
-	Task          int            `json:"task"`
+	Task           int            `json:"task"`
-	Fisid         string         `json:"fisid"`
+	Fisid          string         `json:"fisid"`
-	Dataid        int            `json:"dataid"`
+	Dataid         int            `json:"dataid"`
-	Doccode       string         `json:"doccode"`
+	Doccode        string         `json:"doccode"`
-	Dt            string         `json:"dt"`
+	Docno          interface{}    `json:"docno"`
-	Cashier       string         `json:"cashier"`
+	Dt             string         `json:"dt"`
-	Dtype         int            `json:"dtype"`
+	OpenShiftDt    string         `json:"open_shift_dt"`
-	Isprint       int            `json:"isprint"`
+	Cashier        string         `json:"cashier"`
-	Isoffline     bool           `json:"isoffline"`
+	Dtype          int            `json:"dtype"`
-	Safe          float64        `json:"safe"`
+	Isprint        int            `json:"isprint"`
-	ShiftLink     int            `json:"shift_link"`
+	Ispay          int            `json:"ispay"`
-	Docno         int            `json:"docno"`
+	Isoffline      bool           `json:"isoffline"`
-	Receipt       ZReportReceipt `json:"receipt"`
+	Safe           float64        `json:"safe"`
-	Summary       ZReportSummary `json:"summary"`
+	SafeStartShift float64        `json:"safe_start_shift"`
-	Taxes         []ZReportTax   `json:"taxes"`
+	ShiftLink      int            `json:"shift_link"`
-	Pays          []ZReportPay   `json:"pays"`
+	ShiftPrevLink  int            `json:"shift_prev_link"`
-	Money         []ZReportMoney `json:"money"`
+	VacantOffNums  int            `json:"vacant_off_nums"`
-	Cash          []ZReportMoney `json:"cash"`
+	Devinfo        string         `json:"devinfo"`
-	MoneyTransfer []interface{}  `json:"money_transfer"`
+	DfsLocalNumber string         `json:"dfs_local_number"`
+	Userdata1      string         `json:"userdata1"`
+	Userdata2      string         `json:"userdata2"`
+	Userdata3      string         `json:"userdata3"`
+	Receipt        ZReportReceipt `json:"receipt"`
+	Summary        ZReportSummary `json:"summary"`
+	Taxes          []ZReportTax   `json:"taxes"`
+	Pays           []ZReportPay   `json:"pays"`
+	Money          []ZReportMoney `json:"money"`
+	Cash           []ZReportMoney `json:"cash"`
+	MoneyTransfer  []interface{}  `json:"money_transfer"`
+	Income         []ZReportMoney `json:"income"`
+	Lastcheck      *Lastcheck     `json:"lastcheck,omitempty"`
+	Reports        []interface{}  `json:"reports"`
+	Receipts       []interface{}  `json:"receipts"`
+	Billing        *Billing       `json:"billing,omitempty"`
+	Printheader    *Printheader   `json:"printheader,omitempty"`
+}
+
+type Lastcheck struct {
+	Packnum  int    `json:"packnum"`
+	Docnum   int    `json:"docnum"`
+	Fisnum   string `json:"fisnum"`
+	Packtype int    `json:"packtype"`
 }
 
 type ZReportReceipt struct {
 	CountP        int `json:"count_p"`
 	CountM        int `json:"count_m"`
 	Count14       int `json:"count_14"`
+	Count15       int `json:"count_15"`
+	Count16       int `json:"count_16"`
 	CountTransfer int `json:"count_transfer"`
 	LastDocnoP    int `json:"last_docno_p"`
 	LastDocnoM    int `json:"last_docno_m"`
 }
 
 type ZReportSummary struct {
-	BaseP  float64 `json:"base_p"`
+	BaseP     float64 `json:"base_p"`
-	BaseM  float64 `json:"base_m"`
+	BaseM     float64 `json:"base_m"`
-	TaxexP float64 `json:"taxex_p"`
+	TaxexP    float64 `json:"taxex_p"`
-	TaxexM float64 `json:"taxex_m"`
+	TaxexM    float64 `json:"taxex_m"`
-	DiscP  float64 `json:"disc_p"`
+	DiscP     float64 `json:"disc_p"`
-	DiscM  float64 `json:"disc_m"`
+	DiscM     float64 `json:"disc_m"`
+	DiscPSale float64 `json:"disc_p_sale"`
+	DiscPRef  float64 `json:"disc_p_ref"`
+	DiscMSale float64 `json:"disc_m_sale"`
+	DiscMRef  float64 `json:"disc_m_ref"`
+	Disc0P    float64 `json:"disc0_p"`
+	Disc0M    float64 `json:"disc0_m"`
+	CalcP     float64 `json:"calc_p"`
+	CalcM     float64 `json:"calc_m"`
+	IncomeP   float64 `json:"income_p"`
 }
 
 type ZReportTax struct {
-	GrCode      int     `json:"gr_code"`
+	GrCode       int     `json:"gr_code"`
-	BaseSumP    float64 `json:"base_sum_p"`
+	BaseSumP     float64 `json:"base_sum_p"`
-	BaseSumM    float64 `json:"base_sum_m"`
+	BaseSumM     float64 `json:"base_sum_m"`
-	BaseTaxSumP float64 `json:"base_tax_sum_p"`
+	BaseSumLinkP float64 `json:"base_sum_link_p"`
-	BaseTaxSumM float64 `json:"base_tax_sum_m"`
+	BaseSumLinkM float64 `json:"base_sum_link_m"`
-	BaseExSumP  float64 `json:"base_ex_sum_p"`
+	TaxSumLinkP  float64 `json:"tax_sum_link_p"`
-	BaseExSumM  float64 `json:"base_ex_sum_m"`
+	TaxSumLinkM  float64 `json:"tax_sum_link_m"`
-	TaxName     string  `json:"tax_name"`
+	BaseTaxSumP  float64 `json:"base_tax_sum_p"`
-	TaxFname    string  `json:"tax_fname"`
+	BaseTaxSumM  float64 `json:"base_tax_sum_m"`
-	TaxLit      string  `json:"tax_lit"`
+	BaseExSumP   float64 `json:"base_ex_sum_p"`
-	TaxPercent  float64 `json:"tax_percent"`
+	BaseExSumM   float64 `json:"base_ex_sum_m"`
-	TaxSumP     float64 `json:"tax_sum_p"`
+	TaxName      string  `json:"tax_name"`
-	TaxSumM     float64 `json:"tax_sum_m"`
+	TaxFname     string  `json:"tax_fname"`
-	ExName      string  `json:"ex_name"`
+	TaxLit       string  `json:"tax_lit"`
-	ExPercent   float64 `json:"ex_percent"`
+	TaxPercent   float64 `json:"tax_percent"`
-	ExSumP      float64 `json:"ex_sum_p"`
+	TaxSumP      float64 `json:"tax_sum_p"`
-	ExSumM      float64 `json:"ex_sum_m"`
+	TaxSumM      float64 `json:"tax_sum_m"`
+	ExName       string  `json:"ex_name"`
+	ExPercent    float64 `json:"ex_percent"`
+	ExSumP       float64 `json:"ex_sum_p"`
+	ExSumM       float64 `json:"ex_sum_m"`
+	ActivationDt string  `json:"activation_dt"`
+	TaxNotIncl   int     `json:"tax_not_incl"`
+	TaxAlg       int     `json:"tax_alg"`
+	TaxLink      int     `json:"tax_link"`
 }
 
 type ZReportPay struct {
-	Type    int     `json:"type"`
+	Type        int     `json:"type"`
-	Name    string  `json:"name"`
+	Name        string  `json:"name"`
-	SumP    float64 `json:"sum_p"`
+	SumP        float64 `json:"sum_p"`
-	SumM    float64 `json:"sum_m"`
+	SumM        float64 `json:"sum_m"`
-	RoundPu float64 `json:"round_pu"`
+	RoundPu     float64 `json:"round_pu"`
-	RoundPd float64 `json:"round_pd"`
+	RoundPd     float64 `json:"round_pd"`
-	RoundMu float64 `json:"round_mu"`
+	RoundMu     float64 `json:"round_mu"`
-	RoundMd float64 `json:"round_md"`
+	RoundMd     float64 `json:"round_md"`
+	CommissionP float64 `json:"commission_p"`
+	CommissionM float64 `json:"commission_m"`
+	SumTaxM     float64 `json:"sum_tax_m"`
 }
 
 type ZReportMoney struct {

examples.go

@@ -7,9 +7,10 @@ import (
 
 func ExampleBasicUsage() {
 	client := NewClient(Config{
-		Token:   "your-token",
+		Token:     "your-token",
-		Cashier: "Иванов",
+		Cashier:   "Иванов",
-		Source:  "parking",
+		Source:    "parking",
+		CustomURL: "DM URL/",
 	})
 
 	ctx := context.Background()

vchasno.go

@@ -26,10 +26,12 @@ type Client struct {
 }
 
 type Config struct {
-	Token    string
+	Token     string
-	Cashier  string
+	Cashier   string
-	Source   string
+	Source    string
-	Defaults *DefaultParams
+	Defaults  *DefaultParams
+	CustomURL string
+	Device    string
 }
 
 type DefaultParams struct {
@@ -65,8 +67,15 @@ func NewClient(config Config) *Client {
 		defaults.DefaultTimeout = 30 * time.Second
 	}
 
+	var apicfg *api.Client
+	if config.CustomURL == "" {
+		apicfg = api.NewClient(config.Token)
+	} else {
+		apicfg = api.NewDMClient(config.Token, config.CustomURL, config.Device)
+	}
+
 	return &Client{
-		api:      api.NewClient(config.Token),
+		api:      apicfg,
 		cashier:  config.Cashier,
 		source:   config.Source,
 		defaults: defaults,
@@ -274,3 +283,23 @@ func (c *Client) QuickSellNamed(ctx context.Context, name string, price float64)
 		Price: price,
 	})
 }
+
+func (c *Client) ZeroReceipt(ctx context.Context) (*api.SellResponse, error) {
+	return c.api.Sell(ctx, api.SellParams{
+		Cashier:   c.cashier,
+		Source:    c.source,
+		Rows:      []api.ReceiptRow{},
+		Pays:      []api.ReceiptPay{},
+		CommentUP: "Нульовий чек",
+	})
+}
+
+func (c *Client) ZeroReceiptWithTimeout(timeout time.Duration) (*api.SellResponse, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	return c.ZeroReceipt(ctx)
+}
+
+func (c *Client) ZeroReceiptDefault() (*api.SellResponse, error) {
+	return c.ZeroReceiptWithTimeout(c.defaults.DefaultTimeout)
+}