From d9bfa5ff7fcc402c2619e707c666406cc3a3c2ce Mon Sep 17 00:00:00 2001
From: jeezft <me@jeezft.xyz>
Date: Thu, 8 Jan 2026 16:36:32 +0300
Subject: [PATCH] Added custom URL support (DM)

---
 api/client.go   | 23 +++++++++++++++++------
 api/fiscal.go   |  2 +-
 api/requests.go |  1 +
 vchasno.go      | 20 +++++++++++++++-----
 4 files changed, 34 insertions(+), 12 deletions(-)

diff --git a/api/client.go b/api/client.go
index 9959b56..9f0b598 100644
--- a/api/client.go
+++ b/api/client.go
@@ -3,15 +3,26 @@ package api
 import "resty.dev/v3"
 
 type Client struct {
-	token      string
-	resty      *resty.Client
-	apiBaseURL string
+	token         string
+	resty         *resty.Client
+	apiBaseURL    string
+	fiscalEndpoint string
 }
 
 func NewClient(token string) *Client {
 	return &Client{
-		token:      token,
-		resty:      resty.New(),
-		apiBaseURL: "https://kasa.vchasno.ua/api/v3",
+		token:          token,
+		resty:          resty.New(),
+		apiBaseURL:     "https://kasa.vchasno.ua/api/v3",
+		fiscalEndpoint: "/fiscal/execute",
+	}
+}
+
+func NewDMClient(token string, dmURL string) *Client {
+	return &Client{
+		token:          token,
+		resty:          resty.New(),
+		apiBaseURL:     dmURL,
+		fiscalEndpoint: "/dm/fiscal",
 	}
 }
diff --git a/api/fiscal.go b/api/fiscal.go
index da40412..a6aa6d1 100644
--- a/api/fiscal.go
+++ b/api/fiscal.go
@@ -18,7 +18,7 @@ func (c *Client) executeRequest(ctx context.Context, request FiscalRequest, resp
 		SetContext(ctx).
 		SetHeader("Authorization", c.token).
 		SetBody(reqJson).
-		Post(c.apiBaseURL + "/fiscal/execute")
+		Post(c.apiBaseURL + c.fiscalEndpoint)
 
 	if err != nil {
 		return fmt.Errorf("request failed: %w", err)
diff --git a/api/requests.go b/api/requests.go
index 68c97ad..ab8276b 100644
--- a/api/requests.go
+++ b/api/requests.go
@@ -2,6 +2,7 @@ package api
 
 type FiscalRequest struct {
 	Source   string   `json:"source"`
+	Device   string   `json:"device,omitempty"`
 	Userinfo Userinfo `json:"userinfo,omitempty"`
 	Fiscal   Fiscal   `json:"fiscal"`
 }
diff --git a/vchasno.go b/vchasno.go
index 9990c03..7364f72 100644
--- a/vchasno.go
+++ b/vchasno.go
@@ -25,11 +25,13 @@ type Client struct {
 	defaults *DefaultParams
 }
 
+// !! If you are using Device Manager, set the CustomURL to "http(s)://HOST/api/v3".
 type Config struct {
-	Token    string
-	Cashier  string
-	Source   string
-	Defaults *DefaultParams
+	Token     string
+	Cashier   string
+	Source    string
+	Defaults  *DefaultParams
+	CustomURL string
 }
 
 type DefaultParams struct {
@@ -65,8 +67,16 @@ func NewClient(config Config) *Client {
 		defaults.DefaultTimeout = 30 * time.Second
 	}
 
+	apicfg := &api.Client{}
+
+	if config.CustomURL == "" {
+		apicfg = api.NewClient(config.Token)
+	} else {
+		apicfg = api.NewDMClient(config.Token, config.CustomURL)
+	}
+
 	return &Client{
-		api:      api.NewClient(config.Token),
+		api:      apicfg,
 		cashier:  config.Cashier,
 		source:   config.Source,
 		defaults: defaults,