implemented saving auth token

main.go

@@ -7,6 +7,8 @@ import (
 	"io"
 	"net/http"
 	"net/url"
+	"os"
+	"path/filepath"
 	"time"
 )
 
@@ -93,6 +95,9 @@ type McAuthRequest2 struct {
 
 func main() {
 	
+	auth := Authentication{}
+	dir, _ := os.UserConfigDir()
+	if _, err := os.Stat(filepath.Join(dir, "minecraft_test", "authentication.json")); err != nil {
 		resp, err := http.PostForm("https://login.microsoftonline.com/consumers/oauth2/v2.0/devicecode", url.Values{
 			"client_id": {client_id},
 			"scope":     {"XboxLive.SignIn XboxLive.offline_access"},
@@ -100,7 +105,7 @@ func main() {
 		if err != nil {
 			fmt.Printf("Device Auth Step: %s\n", err)
 			return
-	} else {
+		}
 			defer resp.Body.Close()
 			if resp.StatusCode != 200 {
 				fmt.Printf("Device Auth Step: %v\n", resp.Status)
@@ -112,7 +117,6 @@ func main() {
 			fmt.Println(codeResp.Message)
 			ticker := time.NewTicker(time.Second * time.Duration(codeResp.Interval))
 			defer ticker.Stop()
-		auth := Authentication{}
 			for range ticker.C {
 				resp, err := http.PostForm("https://login.microsoftonline.com/consumers/oauth2/v2.0/token", url.Values{
 					"client_id":   {client_id},
@@ -136,6 +140,16 @@ func main() {
 				}
 
 			}
+			os.MkdirAll(filepath.Join(dir, "minecraft_test"), 0755)
+			f, _ := os.OpenFile(filepath.Join(dir, "minecraft_test", "authentication.json"), os.O_CREATE|os.O_RDWR, 0755)
+			defer f.Close()
+			data, _ = json.Marshal(auth.Access)
+			f.Write(data)
+		} else {
+			f, _ := os.OpenFile(filepath.Join(dir, "minecraft_test", "authentication.json"), os.O_CREATE|os.O_RDWR, 0755)
+			data, _ := io.ReadAll(f)
+			json.Unmarshal(data, &auth.Access)
+		}
 		req, _ := json.Marshal(xboxAuthRequest{Properties: xboxAuthProperties{AuthMethod: "RPS", SiteName: "user.auth.xboxlive.com", RpsTicket: "d=" + auth.Access.Access_token}, RelyingParty: "http://auth.xboxlive.com", TokenType: "JWT"})
 		client := http.Client{}
 		httpReq, _ := http.NewRequest("POST", "https://user.auth.xboxlive.com/user/authenticate", bytes.NewBuffer(req))
@@ -187,7 +201,7 @@ func main() {
 		httpReqMC, _ := http.NewRequest("POST", "https://api.minecraftservices.com/authentication/login_with_xbox", bytes.NewBuffer(mcAuthData))
 		httpReqMC.Header.Add("Content-Type", "application/json")
 		httpReqMC.Header.Add("Accept", "application/json")
-		resp, err = client.Do(httpReqMC)
+		resp, err := client.Do(httpReqMC)
 		if err != nil {
 			fmt.Printf("MC Auth Error: %s\n", err)
 		}
@@ -197,7 +211,6 @@ func main() {
 		}
 		d, _ = io.ReadAll(resp.Body)
 		fmt.Printf("MC Auth Response: %s\n", d)
-	}
 
 	/*
 		fmt.Println("Requesting Oauth")