using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace Cabrito
{
	[Flags]
	public enum ConsoleFlags
	{
		NoSerialize = 1, // Value does not persist

		Alias = NoSerialize,
	}

	internal struct ConsoleVariable
	{
		public string name { get; private set; }
		public ConsoleFlags flags { get; private set; }

		private FieldInfo field;
		private MethodInfo getter;
		private MethodInfo setter;

		public ConsoleVariable(string name, ConsoleFlags flags, FieldInfo field)
		{
			this.name = name;
			this.flags = flags;
			this.field = field;
			this.getter = null;
			this.setter = null;
		}

		public ConsoleVariable(string name, ConsoleFlags flags, MethodInfo getter, MethodInfo setter)
		{
			this.name = name;
			this.flags = flags;
			this.field = null;
			this.getter = getter;
			this.setter = setter;
		}

		public string GetValueString()
		{
			var type = field != null ? field.FieldType : getter.ReturnType;
			if (type == typeof(string))
			{
				if (field != null)
					return (string) field.GetValue(null);
				else if (setter != null)
					return (string) getter.Invoke(null, null);
			}
			else
				throw new Exception("cvar is not type of string");

			throw new Exception("GetValueString no field or getter specified");
		}

		public void SetValue(string value)
		{
			var type = field != null ? field.FieldType : getter.ReturnType;
			if (type == typeof(string))
			{
				if (field != null)
					field.SetValue(null, value);
				else if (setter != null)
					setter.Invoke(null, new object[] {value});
			}
			else
				throw new Exception("Unsupported type for SetValue: " + type.Name);
		}
	}
}