Enhance authentication error handling and logging in auth function

client.go

@@ -51,10 +51,14 @@ func New(config *config.Config) (*Client, error) {
 			"Accept":           "*/*"})
 
 	client.httpClient = httpClient
-	resp := client.auth()
+	resp, err := client.auth()
+	if err != nil {
+		client.logger.Error("error while executing auth request", "request", "auth", "error", err.Error())
+		return nil, errors.New("error while executing auth request: " + err.Error())
+	}
 
 	var sd SessionData
-	err := json.Unmarshal(resp.Data, &sd)
+	err = json.Unmarshal(resp.Data, &sd)
 	if err != nil {
 		client.logger.Error("error while parsing json", "request", "auth", "error", err.Error())
 	}
@@ -275,7 +279,7 @@ func (c *Client) execute(method string, url string, params map[string]string, j
 }
 
 // auth .
-func (c *Client) auth() *Response {
+func (c *Client) auth() (*Response, error) {
 	params := map[string]string{
 		"env":           "cloudprod",
 		"deviceType":    "android",
@@ -290,10 +294,10 @@ func (c *Client) auth() *Response {
 	c.logger.Debug("AUTH HTTP OUTPUT", "body", resp)
 	if err != nil {
 		c.logger.Error("error while executing auth request", "request", "auth", "error", err.Error())
-		return nil
+		return nil, errors.New("error while executing auth request: " + err.Error())
 	}
 	c.logger.Debug("AUTH HTTP OUTPUT", "body", resp)
-	return resp
+	return resp, nil
 }
 
 // parseResponse .