fix(internal/releaser): add helper method to lookup for provider accesToken in environment variabels

internal/releaser/util/util.go

@@ -2,7 +2,10 @@ package util
 
 import (
 	"context"
+	"fmt"
 	"net/http"
+	"os"
+	"strings"
 
 	"golang.org/x/oauth2"
 )
@@ -17,3 +20,15 @@ func CreateBearerHTTPClient(ctx context.Context, token string) *http.Client {
 
 	return client
 }
+
+// GetAccessToken lookup for the providers accesstoken
+func GetAccessToken(providerName string) (string, error) {
+	var token string
+	var exists bool
+	envName := fmt.Sprintf("%s_ACCESS_TOKEN", strings.ToUpper(providerName))
+
+	if token, exists = os.LookupEnv(envName); !exists {
+		return "", fmt.Errorf("Could not find %s in the enviroment variables. Please check if it is set", envName)
+	}
+	return token, nil
+}