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#include "sierrachart.h"

SCDLLName("HolidayCheck")

int HolidayCheck(SCDateTime InputDateTime)
{
  int year = InputDateTime.GetYear();
  int GF_Day {0};
  int GF_Month {0};
int g = (int)(year % 19);
int c = (int)(year / 100);
int h = (int)((c - (int)(c / 4) - (int)((8 * c + 13) / 25) + 19 * g + 15) % 30);
int i = h - (int)(h / 28) * (1 - (int)(h / 28) * (int)(29 / (h + 1)) * (int)((21 - g) / 11));
  GF_Day = i - (int)((year + (int)(year / 4) + i + 2 - c + (int)(c / 4)) % 7) + 26;
  GF_Month = 3;
  if (GF_Day > 31) {
    GF_Month++;
    GF_Day -= 31;
  }

  int Month {InputDateTime.GetMonth()};
  int Day {InputDateTime.GetDay()};
  int WeekDay {InputDateTime.GetDayOfWeek()};
  int ReturnValue {0};

  if (WeekDay != 6) {
    if (
      Month==1 && Day==1
      ||
      Month==1 && Day==2 && WeekDay==1
      ||
      Month==GF_Month && Day==GF_Day
      ||
      Month==11 && WeekDay==4 && Day>21 && Day<=28
      ||
      Month==12 && Day==25
      ||
      Month==12 && Day==24 && WeekDay==5
      ||
      Month==12 && Day==26 && WeekDay==1
    )
      ReturnValue = 1;

    if (
      Month==1 && WeekDay==1 && Day>14 && Day<=21
      ||
      Month==2 && WeekDay==1 && Day>14 && Day<=21
      ||
      Month==5 && WeekDay==1 && Day+7>31
      ||
      Month==6 && Day==19
      ||
      Month==6 && Day==18 && WeekDay==5
      ||
      Month==6 && Day==20 && WeekDay==1
      ||
      Month==7 && Day==3 && WeekDay>0
      ||
      Month==7 && Day==4 && WeekDay>0
      ||
      Month==7 && Day==5 && WeekDay==1
      ||
      Month==9 && WeekDay==1 && Day<=7
      ||
      Month==11 && WeekDay==5 && Day-1>21 && Day-1<=28
      ||
      Month==12 && Day==24 && WeekDay>0 && WeekDay<5
    )
      ReturnValue = 2;
  }

  return ReturnValue;
}


SCSFExport scsf_TemplateFunction(SCStudyInterfaceRef sc)
{
  if (sc.SetDefaults)
  {
    sc.GraphName = "Holiday Check";
    sc.GraphRegion = 0;
    sc.AutoLoop = 1;
    sc.UpdateAlways = 1;
    
    sc.Input[0].Name = "Vertical Position";
    sc.Input[0].SetInt(92);

    sc.Input[1].Name = "Horizontal Position";
    sc.Input[1].SetInt(120);

    sc.Input[2].Name = "Font Size";
    sc.Input[2].SetInt(12);

    sc.Input[3].Name = "Font Color";
    sc.Input[3].SetColor(127,127,255);
    
    sc.Input[4].Name = "Flash Message";
    sc.Input[4].SetYesNo(0);
    
    return;
  }
  
    int CheckToday {HolidayCheck(sc.CurrentSystemDateTime)};
    int CheckTomorrow {HolidayCheck(sc.CurrentSystemDateTime+SCDateTime::DAYS(1))};
    SCString MessageString {""};
    MessageString.Format("\n");
    if (CheckToday == 1)
      MessageString.AppendFormat("[ Close Today ]\n\n");
    if (CheckToday == 2)
      MessageString.AppendFormat("[ Until 10 am Today ]\n\n");
    if (CheckTomorrow == 1)
      MessageString.AppendFormat("[ Close Tomorrow ]");
    if (CheckTomorrow == 2)
      MessageString.AppendFormat("[ Until 10 am Tomorrow ]");
    
    if (!(sc.CurrentSystemDateTime.GetSecond()%5) && sc.Input[4].GetYesNo())
      MessageString.Format("\n");
      

    s_UseTool Tool;
    Tool.Clear();
    Tool.ChartNumber = sc.ChartNumber;

    Tool.LineNumber = 74191;
    Tool.DrawingType = DRAWING_TEXT;
    Tool.UseRelativeVerticalValues = 1;

    Tool.BeginDateTime = sc.Input[1].GetInt();
    Tool.EndDateTime = sc.Input[1].GetInt();
    Tool.BeginValue = sc.Input[0].GetInt();
    Tool.EndValue = sc.Input[0].GetInt();
    Tool.FontSize = sc.Input[2].GetInt();
    Tool.Color = sc.Input[3].GetColor();
    Tool.AddMethod = UTAM_ADD_OR_ADJUST;
    Tool.Text = MessageString;

    sc.UseTool(Tool);

}