using System;
using System.Collections;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Text;

namespace CommonTool
{
	public sealed class Utils
	{


		public static Image LoadImage(string pcFileName)
		{
			string text1 = FileFuns.GetFullPathFileName(pcFileName);
			try
			{
				return Image.FromFile(text1);
			}
			catch (Exception)
			{
				return null;
			}
		}


		public static void ReverseArray(Array array)
		{
			int count = array.Length;
			for (int i = 0; i < count / 2; i++)
			{
				var temp = array.GetValue(count - 1 - i);
				array.SetValue(array.GetValue(i), count - 1 - i);
				array.SetValue(temp, i);
			}
		}

		public static string AreaToSql(string pcStr)
		{
			pcStr = pcStr.Replace("'", "''");
			return pcStr;
		}

		public static string AreaToSqLcs(string pcStr)
		{
			pcStr = pcStr.Replace("'", "''");
			pcStr = pcStr.Replace("\"", "''''");
			return pcStr;
		}

		public static string CvFieldInSql(string inFieldName, string inField, string outField, string outFieldName)
		{
			string lcRetVal = "";
			Array arr1 = UtilStr.StrToArray(inField);
			Array arr2 = UtilStr.StrToArray(outField);
			if (outFieldName.Trim().Length == 0)
			{
				outFieldName = inFieldName;
			}
			if (arr1.Length == arr2.Length)
			{
				lcRetVal = " case " + inFieldName;
				for (int i = 0; i <= arr1.Length; i++)
				{
					lcRetVal += " when '" + arr1.GetValue(i) + "' then '" + arr2.GetValue(i) + "' ";
				}
				lcRetVal += " end as " + outFieldName;
			}
			if (inFieldName == "" || inField == "" || outField == "")
			{
				lcRetVal = "";
			}
			return lcRetVal;
		}


		public static string Decode(string pcKey)
		{
			pcKey = pcKey.Replace("*", "%");
			pcKey = System.Web.HttpUtility.UrlDecode(pcKey, Encoding.Default);
			return pcKey;
		}

		public static string Encode(string asKey)
		{
			asKey = System.Web.HttpUtility.UrlEncode(asKey, Encoding.Default);
			return asKey?.Replace("%", "*");
			
		}


		public static string IsHasSqlEsc(string pcCheckedStr)
		{
			if (pcCheckedStr.Trim().Length > 0 && pcCheckedStr.IndexOf("'", StringComparison.Ordinal) > 0)
			{
				return "'";
			}
			return "N";
		}

		public static bool ObjToBool(object poObj)
		{
			if (poObj == null)
				return false;

			return UtilStr.StrToBool(UtilStr.StrFromObj(poObj));
		}


		public string SmallDate(ref string pcDateField, string pcShowName)
		{
			if (pcShowName.Trim().Length == 0)
			{
				pcShowName = pcDateField;
			}
			return ("(convert(char(10)," + pcDateField + ",120)) as " + pcShowName);
		}



		//======================================= New Add=============================
		/// <summary>
		/// 
		/// </summary>
		/// <param name="poImage"></param>
		/// <returns></returns>

		public static byte[] BytesFromImage(Image poImage)
		{
			byte[] buffer1 = null;
			if (poImage != null)
			{
				MemoryStream stream1 = new MemoryStream();
				poImage.Save(stream1, ImageFormat.Bmp);
				buffer1 = new byte[stream1.Length];
				stream1.Seek(0, SeekOrigin.Begin);
				stream1.Read(buffer1, 0, (int)stream1.Length);
				stream1.Close();
			}
			return buffer1;
		}


		public static object BytesToImage(object poObject)
		{
			object obj1 = null;
			if ((poObject != null) && !(poObject is DBNull))
			{
				try
				{
					byte[] buffer1 = (byte[])poObject;
					if (buffer1.Length > 0)
					{
						MemoryStream stream1 = new MemoryStream(buffer1, true);
						stream1.Write(buffer1, 0, buffer1.Length);
						obj1 = Image.FromStream(stream1);
						stream1.Close();
					}
				}
				catch (Exception exception1)
				{
					obj1 = exception1.Message;
				}
				return obj1;
			}
			return "";
		}


		/// <summary>
		/// 将string型转换成 Int 型
		/// </summary>
		/// <param name="str"></param>
		/// <returns></returns>
		public static int ValI(string str)
		{
			return (int)ValD(str);
		}

		/// <summary>
		/// 将string型转换成 Int64 型
		/// </summary>
		/// <param name="str"></param>
		/// <returns></returns>
		public static Int64 ValI64(string str)
		{
			return (Int64)ValD(str);
		}

		/// <summary>
		/// 字符串转换成数值型
		/// </summary>
		/// <param name="str"></param>
		/// <returns></returns>
		public static decimal ValD(string str)
		{
			string text1 = "";
			foreach (char ch1 in str)
			{
				switch (ch1)
				{
					case ' ':
					case ',':
						break;
					default:
						if ((ch1 >= '0') && (ch1 <= '9'))
						{
							text1 = text1 + ch1.ToString();
						}
						else if (((ch1 == '+') || (ch1 == '-')) && (text1 == ""))
						{
							text1 = text1 + ch1.ToString();
						}
						else
						{
							if ((ch1 != '.') || (text1.IndexOf(ch1) >= 0))
							{
								break;
							}
							text1 = text1 + ch1.ToString();
						}
						break;
				}
			}
			if (text1 == "")
			{
				text1 = "0";
			}
			else if (text1 == "-")
			{
				text1 = "-0";
			}
			return Convert.ToDecimal(text1);
		}
		public static decimal ValD(object poObj)
		{
			return ValD(UtilStr.StrFromObj(poObj));
		}


		public static float ValSingle(object pcStr)
		{
			float lfRetVal = 0f;
			try
			{
				lfRetVal = Convert.ToSingle(pcStr);
			}
			catch
			{
				// ignored
			}
			return lfRetVal;
		}

		public static float PixelsToInch(Graphics g, int pixels, bool horizontal)
		{
			float single1 = horizontal ? g.DpiX : g.DpiY;
			return (pixels / single1);
		}


		public static string FormatCodeToXml(string pcString)
		{
			return pcString.Replace("<", ";lt;").Replace(">", ";gt;").Replace("&", ";amp;");
		}

		public static string FormatXmlToCode(string pcString)
		{
			return pcString.Replace(";amp;", "&").Replace(";lt;", "<").Replace(";gt;", ">");
		}


		public static ArrayList ArrayToArrayList(Array paArr)
		{
			ArrayList list1 = new ArrayList();
			foreach (object obj1 in paArr)
			{
				list1.Add(obj1);
			}
			return list1;
		}

		public static bool IsNum(string pcStrs)
		{
			foreach (char pcstr in pcStrs)
			{
				if (pcstr <= '0' || pcstr >= '9')
					return false;
			}
			return true;
		}


		public static string ByteToString(byte[] inBytes)
		{
			string stringOut = "";
			foreach (byte inByte in inBytes)
			{
				stringOut = stringOut + $"{inByte:X2} ";
			}
			return stringOut;
		}
		public static string BytesToString(byte[] inBytes, Encoding encoding)
		{
			return encoding.GetString(inBytes);
		}

		public static byte[] StringToByte(string inString)
		{
			var byteStrings = inString.Split(" ".ToCharArray());
			var byteOut = new byte[byteStrings.Length - 1];
			for (int i = 0; i == byteStrings.Length - 1; i++)
			{
				byteOut[i] = Convert.ToByte(("0x" + byteStrings[i]));
			}
			return byteOut;
		}

		public static byte[] StringToBytes(string text, Encoding encoding)
		{
			//UTF8Encoding encoding = new UTF8Encoding();
			return encoding.GetBytes(text);
		}

		public static string GetQuerySql(string pcFiled, string pcValue)
		{
			return GetQuerySql(pcFiled, pcValue, false);
		}

		public static string GetQuerySql(string pcFiled, string pcValue, bool pbAddAnd)
		{
			string lcRetVal = "";
			if (pcFiled.Trim().Length > 0)
			{
				if (pbAddAnd)
					lcRetVal = " and ";
				lcRetVal += " " + pcFiled + " = '" + pcValue + "'";
			}
			return lcRetVal;
		}



	}

	public enum CovType
	{
		SqlQuary = 0,
		JsStr = 1,
		HtmlStr = 2,
		CtrlText = 3,
		UrlMsg = 4
	}
}