﻿//-----------------------------------------------------
//            Arbor 3: FSM & BT Graph Editor
//		  Copyright(c) 2014-2021 caitsithware
//-----------------------------------------------------
using UnityEngine;
using System.Collections;
using System.Collections.Generic;

namespace Arbor.Calculators
{
#if ARBOR_DOC_JA
	/// <summary>
	/// Enumをフォーマットした文字列を返す。
	/// </summary>
#else
	/// <summary>
	/// Returns a formatted string of Enums.
	/// </summary>
#endif
	[AddComponentMenu("")]
	[AddBehaviourMenu("Enum/Enum.ToString")]
	[BehaviourTitle("Enum.ToString")]
	[BuiltInBehaviour]
	public sealed class EnumToStringCalculator : Calculator, INodeBehaviourSerializationCallbackReceiver
	{
#if ARBOR_DOC_JA
		/// <summary>
		/// Enum型
		/// </summary>
#else
		/// <summary>
		/// Enum type
		/// </summary>
#endif
		[SerializeField]
		[ClassEnumFieldConstraint]
		private ClassTypeReference _Type = new ClassTypeReference();

#if ARBOR_DOC_JA
		/// <summary>
		/// 値
		/// </summary>
#else
		/// <summary>
		/// Value
		/// </summary>
#endif
		[SerializeField]
		private FlexibleEnumAny _Value = new FlexibleEnumAny();

#if ARBOR_DOC_JA
		/// <summary>
		/// フォーマット<br/>
		/// フォーマットの詳細については、次を参照してください。<a href="https://docs.microsoft.com/ja-jp/dotnet/standard/base-types/enumeration-format-strings" target="_blank">列挙型形式文字列</a>
		/// </summary>
#else
		/// <summary>
		/// Format<br/>
		/// For more information about numeric format specifiers, see <a href="https://docs.microsoft.com/en-us/dotnet/standard/base-types/enumeration-format-strings" target="_blank">Enumeration format strings</a>.
		/// </summary>
#endif
		[SerializeField]
		private FlexibleString _Format = new FlexibleString();

#if ARBOR_DOC_JA
		/// <summary>
		/// 結果出力
		/// </summary>
#else
		/// <summary>
		/// Output result
		/// </summary>
#endif
		[SerializeField] private OutputSlotString _Result = new OutputSlotString();

		// Use this for calculate
		public override void OnCalculate()
		{
			System.Type type = _Type.type;

			if (type != null && EnumFieldUtility.IsEnum(type))
			{
				var intValue = _Value.value;
				var enumValue = EnumFieldUtility.ToEnum(type, intValue);
				string format = _Format.value;
				var str = string.IsNullOrEmpty(format) ? enumValue.ToString() : enumValue.ToString(format);
				_Result.SetValue(str);
			}
			else
			{
				Debug.LogWarning("The type is not an enum type.");
			}
		}

		void INodeBehaviourSerializationCallbackReceiver.OnAfterDeserialize()
		{
			System.Type type = _Type.type;
			if (type != null && EnumFieldUtility.IsEnum(type))
			{
				var typeConstraint = new ClassConstraintInfo() { baseType = type };
				_Value.overrideConstraint = typeConstraint;
			}
			else
			{
				_Value.overrideConstraint = null;
			}
		}

		void INodeBehaviourSerializationCallbackReceiver.OnBeforeSerialize()
		{
		}
	}
}