public void Add_Contract(Contract contract1)
{
//check that this child hasnt existed in this nanny already
if (GetAll_Contract(con => con.Nanny_Id == contract1.Nanny_Id && con.Child_Id == contract1.Child_Id).Count() != 0)
{
throw new Exception("this contract has allready been in system");
}
Child ch = Get_Child(contract1.Child_Id);
if (ch == null)//cant add contract without child
{
throw new Exception("child in contract doesnt exist");
}
int age_in_days = (DateTime.Now.Subtract(ch.Birth_Date).Days);//we make minus between now and birth date and take all the days that he lives
if (age_in_days / 30 < 3)
{
throw new Exception("cant add to contract,child that is less then 3 monthes");
}
Nanny nan = Get_Nanny(contract1.Nanny_Id);
if (nan == null)//cant add contract without nanny
{
throw new Exception("nanny in contract doesnt exist");
}
var nanny_contracts = GetAll_Contract(con => con.Nanny_Id == nan.Id);//return all previous contracts of this nanny
int sum = 0;
foreach (var item in nanny_contracts)//counts all of this nanny's contracts
{
sum++;
}
if (sum == nan.Max_Children)//shr took her max
{
throw new Exception("this nanny cant take more children");
}
if (age_in_days / 30 < nan.Min_Kid_Age || age_in_days / 30 > nan.Max_Kid_Age)//if age of child isnt in range of allowed ages for this nan
{
throw new Exception("this nanny cant take this age of child");
}
Calculate_Salary(contract1, nan, ch);//activate func that puts in the correct salary
my_dal.Add_Contract(contract1);
}