Added reauthentication (token freshness) and protected username change

contexts/user.go

@@ -5,14 +5,19 @@ import (
 	"projectreshoot/db"
 )
 
+type AuthenticatedUser struct {
+	*db.User
+	Fresh int64
+}
+
 // Return a new context with the user added in
-func SetUser(ctx context.Context, u *db.User) context.Context {
+func SetUser(ctx context.Context, u *AuthenticatedUser) context.Context {
 	return context.WithValue(ctx, contextKeyAuthorizedUser, u)
 }
 
 // Retrieve a user from the given context. Returns nil if not set
-func GetUser(ctx context.Context) *db.User {
-	user, ok := ctx.Value(contextKeyAuthorizedUser).(*db.User)
+func GetUser(ctx context.Context) *AuthenticatedUser {
+	user, ok := ctx.Value(contextKeyAuthorizedUser).(*AuthenticatedUser)
 	if !ok {
 		return nil
 	}