authing the app works now, but the string needs to be trimmed

huego.go

@@ -3,6 +3,7 @@ package main
 import (
 	"bufio"
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"log"
@@ -74,42 +75,63 @@ func discoverHueBridge() ([]Bridge, error) {
 func registerApplication(bridge Bridge) RegisteredApplication {
 	var applicationName string
 	var deviceName string
+	var token string
+
 	fmt.Printf("Enter name of your application: ")
 	fmt.Scan(&applicationName)
 	fmt.Printf("Enter name of your device: ")
 	fmt.Scan(&deviceName)
-	resp, err := http.Post(
+
-		"http://"+bridge.IP.String()+"/api",
+	for {
-		"application/json",
+		resp, err := http.Post(
-		bytes.NewBuffer([]byte(`{"devicetype":"`+applicationName+`#`+deviceName+`"}`)))
-	if err != nil {
-		log.Fatal(err)
-	}
-	body, err := io.ReadAll(resp.Body)
-	defer resp.Body.Close()
-	if err != nil {
-		log.Fatal(err)
-	}
-	// if body has link button not pressed, tell user to press it then send the request again to register the application
-	if strings.Contains(string(body), "link button not pressed") {
-		fmt.Println("Link button not pressed. Press link button on bridge and press anter to continue.")
-		bufio.NewReader(os.Stdin).ReadBytes('\n')
-		resp.Body.Close()
-		http.Post(
 			"http://"+bridge.IP.String()+"/api",
 			"application/json",
 			bytes.NewBuffer([]byte(`{"devicetype":"`+applicationName+`#`+deviceName+`"}`)))
-		body, err = io.ReadAll(resp.Body)
 		if err != nil {
 			log.Fatal(err)
 		}
+
+		body, err := io.ReadAll(resp.Body)
+		resp.Body.Close()
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		type Success struct {
+			Username string `json:"username"`
+		}
+
+		if !strings.Contains(string(body), "link button not pressed") {
+			// Define a struct matching the expected JSON response structure
+			type SuccessResponse struct {
+				Success struct {
+					Username string `json:"username"`
+				} `json:"success"`
+			}
+
+			// Unmarshal the response body into the struct
+			var successResponse []SuccessResponse
+			if err := json.Unmarshal(body, &successResponse); err != nil {
+				log.Fatalf("Error parsing response: %v", err)
+			}
+
+			// Assign the username to the token
+			if len(successResponse) > 0 {
+				token = successResponse[0].Success.Username
+			}
+			break
+		}
+
+		fmt.Println("Link button not pressed. Press link button on bridge and press Enter to continue.")
+		bufio.NewReader(os.Stdin).ReadBytes('\n')
 	}
+
 	registeredApplication := RegisteredApplication{
 		bridge:          bridge,
 		applicationName: applicationName,
 		deviceName:      deviceName,
-		token:           string(body)}
+		token:           token,
-	resp.Body.Close()
+	}
 	return registeredApplication
 }