Settings Validate Should Run After Interceptor

[brandonryan]

I have a situation where I'm trying to load configuration via IConfiguration.bind().

public class SettingsCommandInterceptor: ICommandInterceptor
{
    public void Intercept(CommandContext context, CommandSettings settings)
    {
        var confBuilder = new ConfigurationBuilder();
        var appConfig = confBuilder.Build();
        appConfig.Bind(settings);
    }
}

This works great! However, if I depend on this behavior to set properties in my settings when I have a validator, the validator runs before my interceptor raising errors.

public class MyCommandCliOptions : CommandSettings
{
    [CommandOption("--username")]
    [Description("Username to authenticate")]
    public required string AppUsername { get; set; }

    [CommandOption("--password")]
    [Description("Password to authenticate")]
    public required string AppPassword { get; set; }
    
    public override ValidationResult Validate()
    {
        var baseResult = base.Validate();
        if (!baseResult.Successful) return baseResult;
        
        if (AppUsername.IsNullOrEmpty()) return ValidationResult.Error("Username is required.");
        if (AppPassword.IsNullOrEmpty()) return ValidationResult.Error("Password is required.");

        return ValidationResult.Success();
    }
}

In my situation, I have a password that I dont want to be empty, and I want to load from dotnet user secrets instead of passing in an argument every time. Right now I just have to do my validation in my command Execute and throw there, which sucks.