fix: project list command does not work with service account (#691)

- fix: project list command does not work with service account
- add GetAuthEmail() function to get the email of the authenticated user

Author: marceljk

internal/cmd/project/list/list.go

@@ -167,7 +167,7 @@ func buildRequest(ctx context.Context, model *inputModel, apiClient resourceMana
 	}
 
 	if model.ParentId == nil && model.ProjectIdLike == nil && model.Member == nil {
-		email, err := auth.GetAuthField(auth.USER_EMAIL)
+		email, err := auth.GetAuthEmail()
 		if err != nil {
 			return req, fmt.Errorf("get email of authenticated user: %w", err)
 		}

internal/cmd/project/list/list_test.go

@@ -259,7 +259,12 @@ func TestParseInput(t *testing.T) {
 
 func TestBuildRequest(t *testing.T) {
 	keyring.MockInit()
-	err := auth.SetAuthField(auth.USER_EMAIL, "[email protected]")
+	err := auth.SetAuthFlow(auth.AUTH_FLOW_USER_TOKEN)
+	if err != nil {
+		t.Fatalf("Failed to set auth flow: %v", err)
+	}
+
+	err = auth.SetAuthField(auth.USER_EMAIL, "[email protected]")
 	if err != nil {
 		t.Fatalf("Failed to set auth user email: %v", err)
 	}

internal/pkg/auth/storage.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-
 	"os"
 	"path/filepath"
 
@@ -23,7 +22,6 @@ type AuthFlow string
 
 const (
 	keyringService     = "stackit-cli"
-	textFileFolderName = "stackit"
 	textFileName       = "cli-auth-storage.txt"
 	envAccessTokenName = "STACKIT_ACCESS_TOKEN"
 )
@@ -342,6 +340,29 @@ func GetProfileEmail(profile string) string {
 	return email
 }
 
+// GetAuthEmail returns the email of the authenticated account.
+// If the environment variable STACKIT_ACCESS_TOKEN is set, the email of this token will be returned.
+func GetAuthEmail() (string, error) {
+	// If STACKIT_ACCESS_TOKEN is set, get the mail from the token
+	if accessToken := os.Getenv(envAccessTokenName); accessToken != "" {
+		email, err := getEmailFromToken(accessToken)
+		if err != nil {
+			return "", fmt.Errorf("error getting email from token: %w", err)
+		}
+		return email, nil
+	}
+
+	profile, err := config.GetProfile()
+	if err != nil {
+		return "", fmt.Errorf("error getting profile: %w", err)
+	}
+	email := GetProfileEmail(profile)
+	if email == "" {
+		return "", fmt.Errorf("error getting profile email. email is empty")
+	}
+	return email, nil
+}
+
 func LoginUser(email, accessToken, refreshToken, sessionExpiresAtUnix string) error {
 	authFields := map[authFieldKey]string{
 		SESSION_EXPIRES_AT_UNIX: sessionExpiresAtUnix,