using System;

namespace OpenTap.Addin.Util
{
    public class VariableResolverFactory
    {
        public static IVariableResolver DEFAULT { get; set; }

        private static IVariableResolverCreator Instance { get; set; }
        public static void Register(IVariableResolverCreator resolver)
        {
            Instance = resolver;
            DEFAULT = resolver.CreateResolver();
        }

        public static IVariableResolver CreateResolver()
        {
            return Instance.CreateResolver();
        }
    }

    public interface IVariableResolverCreator
    {
        IVariableResolver CreateResolver();
    }

    public interface IVariableResolver
    {
        event EventHandler<string> DataChanged;
        dynamic Resolve(TestPlanRun run, ITestStep step, string expr);

        T Resolve<T>(TestPlanRun run, ITestStep step, string expr);

        dynamic Resolve(TestPlanRun run, ITestStep step, string expr, Type targetType);
        void Update(TestPlanRun run, ITestStep step, string expr);

        void Update(TestPlanRun run, ITestStep step, string name, object value);
    }
}