private static MyUser1 ReduceUser(MyUser1 user, object action)
{
var changed = false;
if (action is ActionChangeUserName a)
{
if (a.targetUserId == user.id)
{
user.name = a.newName;
user.MarkMutated();
changed = true;
}
}
user.contacts = user.MutateField(user.contacts, action, ContactsReducer, ref changed);
if (changed)
{
user.MarkMutated();
}
return(user);
}
private static MyUser1 ReduceUser(MyUser1 user, object action)
{
if (action is ActionLogoutUser)
{
return(null);
}
if (action is ActionLoginUser a1)
{
return(a1.newLoggedInUser);
}
if (action is ActionOnUser a)
{
bool userChanged = false;
var isTargetUser = a.IsTargetUser(user);
var name = user.name.Mutate(isTargetUser, a, ReduceUserName, ref userChanged);
var age = user.age.Mutate(isTargetUser, a, ReduceUserAge, ref userChanged);
var contacts = user.MutateField(user.contacts, a, ReduceContacts, ref userChanged);
if (userChanged)
{
return(new MyUser1(name, age, contacts));
}
}
return(user); // None of the fields changed, old user can be returned
}