Date.cs

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using UnityEngine;
using System.Xml;

namespace HKI.Core.Variables
{
    [System.Serializable]
    [HKIVar]
    [CreateAssetMenu(fileName = "Date", menuName = "HKI/Variables/Date", order = 20)]
    public class Date : HKIVarGeneric<DayMonthYear>
    {
        // Interface functions
        public bool ValidateDay()
        {
            return Value.ValidateDay();
        }
        
        public override void Save(XmlNode parentNode)
        {
            XmlNode node = parentNode.OwnerDocument.CreateElement(name.Replace(" ", ""));
            parentNode.AppendChild(node);

            XmlAttribute valueDayAttribute = parentNode.OwnerDocument.CreateAttribute("Day");
            valueDayAttribute.Value = Value.Day.ToString();
            node.Attributes.Append(valueDayAttribute);

            XmlAttribute valueMonthAttribute = parentNode.OwnerDocument.CreateAttribute("Month");
            valueMonthAttribute.Value = Value.Month.ToString();
            node.Attributes.Append(valueMonthAttribute);

            XmlAttribute valueYearAttribute = parentNode.OwnerDocument.CreateAttribute("Year");
            valueYearAttribute.Value = Value.Year.ToString();
            node.Attributes.Append(valueYearAttribute);

            XmlAttribute valueBCADAttribute = parentNode.OwnerDocument.CreateAttribute("BCAD");
            valueBCADAttribute.Value = Value.BCAD.ToString();
            node.Attributes.Append(valueBCADAttribute);
        }

        public override void Load(XmlNode node)
        {
            if (node.Attributes == null)
            {
                Debug.LogError("(Date) >" + name + "< Loading failed because this XmlNode has not attributes!");
                return;
            }

            XmlAttribute valueDayAttribute = node.Attributes["Day"];
            if(valueDayAttribute == null)
            {
                Debug.LogError("(Date) >" + name + "< Loading failed because this XmlNode has not an attribute with the name >Day<!");
                return;
            }

            XmlAttribute valueMonthAttribute = node.Attributes["Month"];
            if(valueMonthAttribute == null)
            {
                Debug.LogError("(Date) >" + name + "< Loading failed because this XmlNode has not an attribute with the name >Month<!");
                return;
            }

            XmlAttribute valueYearAttribute = node.Attributes["Year"];
            if(valueYearAttribute == null)
            {
                Debug.LogError("(Date) >" + name + "< Loading failed because this XmlNode has not an attribute with the name >Year<!");
                return;
            }

            XmlAttribute valueBCADAttribute = node.Attributes["BCAD"];
            if(valueBCADAttribute == null)
            {
                Debug.LogError("(Date) >" + name + "< Loading failed because this XmlNode has not an attribute with the name >BCAD<!");
                return;
            }

            int parsedDayValue;
            if (!int.TryParse(valueDayAttribute.Value, out parsedDayValue))
                Debug.LogError("(Date) >" + name + "< Loading failed because parsing of >" + valueDayAttribute.Value + "< failed!");

            DayMonthYear.Months parsedMonthValue;
            if (!System.Enum.TryParse(valueMonthAttribute.Value, out parsedMonthValue))
                Debug.LogError("(Date) >" + name + "< Loading failed because parsing of >" + valueMonthAttribute.Value + "< failed!");

            int parsedYearValue;
            if (!int.TryParse(valueYearAttribute.Value, out parsedYearValue))
                Debug.LogError("(Date) >" + name + "< Loading failed because parsing of >" + valueYearAttribute.Value + "< failed!");

            DayMonthYear.BeforeChristAnnoDomini parsedBCADValue;
            if (!System.Enum.TryParse(valueBCADAttribute.Value, out parsedBCADValue))
                Debug.LogError("(Date) >" + name + "< Loading failed because parsing of >" + valueBCADAttribute.Value + "< failed!");

            SetValue = new DayMonthYear(parsedDayValue, parsedMonthValue, parsedYearValue, parsedBCADValue);
        }
    }
}