add callback requests

Makefile

@@ -1,6 +1,8 @@
 lint:
 	golangci-lint -v run ./...
 
-
 generate:
-	go generate -v ./...
+	go generate -v ./...
+
+demo_run:
+	cd ./example && go run main.go

README.md

@@ -29,7 +29,16 @@ func main() {
 	client := cli.NewClient(conf)
 	client.Debug(true, os.Stdout)
 
-	acc, err := client.Account()
-	mte, err := client.AccountMTEngines()
+	_, _ = client.GetAccount()
+    _, _ = client.GetAccountMTEngines()
+    _, _ = client.SetCallback(cli.Callback{
+        URL: "https://demo.example/callback",
+        AdditionalHeaders: []cli.AdditionalHeader{
+            {Name: "x-header", Value: "demo"},
+        },
+    })
+    _, _ = client.GetCallback()
+    _ = client.DelCallback()
+    _, _ = client.GetCallbackLastErrors(10)
 }
 ```

account.go

@@ -26,14 +26,14 @@ type (
 	AccountMTEngines []AccountMTEngine
 )
 
-//Account Receiving the account details
-func (v *Client) Account() (o Account, err error) {
-	err, _ = v.call(http.MethodGet, uriAccount, nil, &o)
+//GetAccount Receiving the account details
+func (v *Client) GetAccount() (out Account, err error) {
+	err, _ = v.call(http.MethodGet, uriAccount, nil, &out)
 	return
 }
 
-//AccountMtengines Receiving MT engines available for the account
-func (v *Client) AccountMTEngines() (o AccountMTEngines, err error) {
-	err, _ = v.call(http.MethodGet, uriAccountMTEngines, nil, &o)
+//GetAccountMTEngines Receiving MT engines available for the account
+func (v *Client) GetAccountMTEngines() (out AccountMTEngines, err error) {
+	err, _ = v.call(http.MethodGet, uriAccountMTEngines, nil, &out)
 	return
 }

callback.go

@@ -0,0 +1,58 @@
+package smartcatclient
+
+import (
+	"fmt"
+	"net/http"
+)
+
+//go:generate easyjson
+
+const (
+	uriCallback           = "/api/integration/v1/callback"
+	uriCallbackLastErrors = "/api/integration/v1/callback/lastErrors"
+)
+
+//easyjson:json
+type (
+	AdditionalHeader struct {
+		Name  string `json:"name"`
+		Value string `json:"value"`
+	}
+	Callback struct {
+		URL               string             `json:"url"`
+		AdditionalHeaders []AdditionalHeader `json:"additionalHeaders"`
+	}
+	LastError struct {
+		Created   string   `json:"created"`
+		URL       string   `json:"url"`
+		Reason    string   `json:"reason"`
+		Code      int      `json:"code"`
+		Content   string   `json:"content"`
+		SourceIds []string `json:"sourceIds"`
+	}
+	LastErrors []LastError
+)
+
+//DelCallback Resetting the configuration of notifications reception
+func (v *Client) DelCallback() (err error) {
+	err, _ = v.call(http.MethodDelete, uriCallback, nil, nil)
+	return
+}
+
+//GetCallback Reading configurations of notifications reception of the account
+func (v *Client) GetCallback() (out Callback, err error) {
+	err, _ = v.call(http.MethodGet, uriCallback, nil, &out)
+	return
+}
+
+//SetCallback Setting configurations of notifications reception of the account
+func (v *Client) SetCallback(in Callback) (out Callback, err error) {
+	err, _ = v.call(http.MethodPost, uriCallback, &in, &out)
+	return
+}
+
+//GetCallbackLastErrors Reading the recent sending errors
+func (v *Client) GetCallbackLastErrors(limit int) (out LastErrors, err error) {
+	err, _ = v.call(http.MethodGet, fmt.Sprintf("%s?limit=%d", uriCallbackLastErrors, limit), nil, &out)
+	return
+}