using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;

namespace Bowin.Common.XML
{
    public static partial class XElementExtensions
    {
        public static double? GetDoubleValue(this XElement node)
        {
            if (node == null) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;
            return double.Parse(node.Value);
        }

        public static DateTime? GetDateTimeValue(this XElement node)
        {
            if (node == null) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;

            return DateTime.Parse(node.Value);
        }

        public static string GetTrimStringValue(this XElement node)
        {
            if (node == null) return string.Empty;

            return node.Value.Trim();
        }

        public static string GetStringValue(this XElement node)
        {
            if (node == null) return string.Empty;

            return node.Value;
        }

        public static List<string> GetStringListValue(this XElement node, char splitChar = ',')
        {
            var values = default(List<string>);
            if (node != default(XElement))
            {
                values = node.Value.Split(new char[] { splitChar }, StringSplitOptions.RemoveEmptyEntries).ToList();
            }
            return values;
        }

        public static decimal? GetDecimalValue(this XElement node)
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;
            return decimal.Parse(node.Value);
        }

        public static int? GetIntValue(this XElement node)
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;
            return int.Parse(node.Value);
        }

        public static long? GetLongValue(this XElement node)
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;
            return long.Parse(node.Value);
        }
        public static List<int> GetIntListValue(this XElement node, char splitChar = ',')
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return new List<int>();
            if (string.IsNullOrEmpty(node.Value)) return new List<int>();
            return node.Value.Split(splitChar).Select(x => int.Parse(x)).ToList();
        }

        public static Guid? GetGuidValue(this XElement node)
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return null;
            return Guid.Parse(node.Value);
        }

        public static List<Guid> GetGuidListValue(this XElement node, char splitChar = ',')
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return default(List<Guid>);
            return node.Value.Split(splitChar).Select(x => Guid.Parse(x)).ToList();
        }

        public static double? GetDoubleValue(this XAttribute node)
        {
            if (node == null) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;
            return double.Parse(node.Value);
        }

        public static DateTime? GetDateTimeValue(this XAttribute node)
        {
            if (node == null) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;

            return DateTime.Parse(node.Value);
        }

        public static string GetTrimStringValue(this XAttribute node)
        {
            if (node == null) return string.Empty;

            return node.Value.Trim();
        }

        public static string GetStringValue(this XAttribute node)
        {
            if (node == null) return string.Empty;

            return node.Value;
        }

        public static List<string> GetStringListValue(this XAttribute node, char splitChar = ',')
        {
            var values = default(List<string>);
            if (node != default(XAttribute))
            {
                values = node.Value.Split(new char[] { splitChar }, StringSplitOptions.RemoveEmptyEntries).ToList();
            }
            return values;
        }

        public static decimal? GetDecimalValue(this XAttribute node)
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;
            return decimal.Parse(node.Value);
        }

        public static int? GetIntValue(this XAttribute node)
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return null;
            if (string.IsNullOrEmpty(node.Value)) return null;
            return int.Parse(node.Value);
        }
        public static List<int> GetIntListValue(this XAttribute node, char splitChar = ',')
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return new List<int>();
            if (string.IsNullOrEmpty(node.Value)) return new List<int>();
            return node.Value.Split(splitChar).Select(x => int.Parse(x)).ToList();
        }

        public static Guid? GetGuidValue(this XAttribute node)
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return null;
            return Guid.Parse(node.Value);
        }

        public static List<Guid> GetGuidListValue(this XAttribute node, char splitChar = ',')
        {
            if (node == null || string.IsNullOrEmpty(node.Value)) return default(List<Guid>);
            return node.Value.Split(splitChar).Select(x => Guid.Parse(x)).ToList();
        }

    }
}