using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace SqlSugar.OceanBaseForOracle
{
    /// <summary>
    ///Common Extensions for external users
    /// </summary>
    public static class UtilExtensions
    {
        public static bool EqualCase(this string thisValue, string equalValue)
        {
            if (thisValue != null && equalValue != null)
            {
                return thisValue.ToLower() == equalValue.ToLower();
            }
            else
            {
                return thisValue == equalValue;
            }
        }
        public static string ToLower(this string value, bool isLower) 
        {
            if (isLower) 
            {
                return value.ObjToString().ToLower();
            }
            return value.ObjToString();
        }
        public static int ObjToInt(this object thisValue)
        {
            int reval = 0;
            if (thisValue == null) return 0;
            if (thisValue is Enum)
            {
                return (int)thisValue;
            }
            if (thisValue != null && thisValue != DBNull.Value && int.TryParse(thisValue.ToString(), out reval))
            {
                return reval;
            }
            return reval;
        }

        public static int ObjToInt(this object thisValue, int errorValue)
        {
            int reval = 0;
            if (thisValue is Enum)
            {
                return (int)thisValue;
            }
            if (thisValue != null && thisValue != DBNull.Value && int.TryParse(thisValue.ToString(), out reval))
            {
                return reval;
            }
            return errorValue;
        }

        public static double ObjToMoney(this object thisValue)
        {
            double reval = 0;
            if (thisValue != null && thisValue != DBNull.Value && double.TryParse(thisValue.ToString(), out reval))
            {
                return reval;
            }
            return 0;
        }

        public static double ObjToMoney(this object thisValue, double errorValue)
        {
            double reval = 0;
            if (thisValue != null && thisValue != DBNull.Value && double.TryParse(thisValue.ToString(), out reval))
            {
                return reval;
            }
            return errorValue;
        }

        public static string ObjToString(this object thisValue)
        {
            if (thisValue != null) return thisValue.ToString().Trim();
            return "";
        }

        public static string ObjToString(this object thisValue, string errorValue)
        {
            if (thisValue != null) return thisValue.ToString().Trim();
            return errorValue;
        }

        public static Decimal ObjToDecimal(this object thisValue)
        {
            Decimal reval = 0;
            if (thisValue != null && thisValue != DBNull.Value && decimal.TryParse(thisValue.ToString(), out reval))
            {
                return reval;
            }
            return 0;
        }

        public static Decimal ObjToDecimal(this object thisValue, decimal errorValue)
        {
            Decimal reval = 0;
            if (thisValue != null && thisValue != DBNull.Value && decimal.TryParse(thisValue.ToString(), out reval))
            {
                return reval;
            }
            return errorValue;
        }

        public static DateTime ObjToDate(this object thisValue)
        {
            DateTime reval = DateTime.MinValue;
            if (thisValue != null && thisValue != DBNull.Value && DateTime.TryParse(thisValue.ToString(), out reval))
            {
                reval = Convert.ToDateTime(thisValue);
            }
            return reval;
        }

        public static DateTime ObjToDate(this object thisValue, DateTime errorValue)
        {
            DateTime reval = DateTime.MinValue;
            if (thisValue != null && thisValue != DBNull.Value && DateTime.TryParse(thisValue.ToString(), out reval))
            {
                return reval;
            }
            return errorValue;
        }

        public static bool ObjToBool(this object thisValue)
        {
            bool reval = false;
            if (thisValue != null && thisValue != DBNull.Value && bool.TryParse(thisValue.ToString(), out reval))
            {
                return reval;
            }
            return reval;
        }
        public static string ToUpper(this string value, bool isAutoToUpper)
        {
            if (value == null) return null;
            if (isAutoToUpper == false) return value;
            return value.ToUpper();
        }

        public static string GetN(this SqlSugarProvider Context) 
        {
            var N = "N";
            if (Context.CurrentConnectionConfig.MoreSettings != null && Context.CurrentConnectionConfig.MoreSettings.DisableNvarchar)
            {
                N = "";
            }
            return N;
        }
    }
}