/*
* Update a province from the file.
* - pv : Province class object
*/
public void HKUpdate(HKProvince pv)
{
try
{
// Call HKEdit method to check can edit
HKEdit(pv);
if (IsEdit)
{
HKDelete(pv.ProvinceCode);
using (SW = new StreamWriter(FILENAME, append: true))
{
SW.WriteLine(pv.ToString());
}
SW.Close();
}
else
{
throw new Exception(string.Format("province code [{0}] " +
"already on file.", pv.ProvinceCode));
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
/*
* Called in another method. Parsing the stringl to make each field.
* - sRecord made with the delimiter(-) like this
* "ProvinceCode-ProvinceName-CountryCode..."
* - return : Province class object
*/
public HKProvince HKParseProvince(string sRecord)
{
string[] sArry = sRecord.Split('-');
HKProvince pv = new HKProvince();
if (sArry.Length != 6)
{
throw new Exception("Its not a province record.");
}
else
{
pv.ProvinceCode = sArry[0];
pv.Name = sArry[1];
pv.CountryCode = sArry[2];
pv.TaxCode = sArry[3];
pv.TaxRate = Convert.ToDouble(sArry[4]);
pv.IncludesFederalTax = Convert.ToBoolean(sArry[5]);
}
return(pv);
}
/*
* Get all provinces from the file. Called from HKAdd or HKUpdate.
* - pv : Province class object
* - return : Province list
*/
private void HKEdit(HKProvince pv)
{
string sError = "";
Regex codePattern = new Regex(@"^[a-zA-Z]{2}$");
if (Utility.NullToString(pv.ProvinceCode) == "")
{
sError += "ProvinceCode is required.\n";
}
else if (!codePattern.IsMatch(ProvinceCode))
{
sError += "Province Code must be 2 letters.\n";
}
if (Utility.NullToString(pv.Name) == "")
{
sError += "Name is required.\n";
}
if (Utility.NullToString(pv.CountryCode) == "")
{
sError += "Country Code is required.\n";
}
else if (!codePattern.IsMatch(CountryCode))
{
sError += "Country Code must be 2 letters.\n";
}
IsEdit = (HKGetByProvinceCode(pv.ProvinceCode) == null) ? false : true;
HKProvince checkPV = HKGetByProvinceName(pv.Name);
//checkPV != null : already exist the same province code in the record
// !IsEdit : Current state is can add
// If the provinceCode retrieved is not the same as the provinceCode entered
if (checkPV != null)
{
if (!IsEdit || checkPV.ProvinceCode != pv.ProvinceCode)
{
throw new Exception(string.Format("Name [{0}] is " +
"already on file.\n", pv.Name));
}
}
// TaxCode is provided. It can be empty/null
// - upper case
// - only letters.
if (Utility.NullToString(pv.TaxCode) != "")
{
Regex taxPattern = new Regex(@"^[A-Z]+$");
if (!taxPattern.IsMatch(pv.TaxCode.ToUpper()))
{
sError += "Tax code must be only in letters.\n";
}
// TaxCode is not provided,
// - TaxRate must be zero. Otherwise, it can be zero to one, inclusive.
// - Tax rate is between 0 and 1
// regardless of whether Taxcode is provided or not
if (0 > pv.TaxRate || pv.TaxRate > 1)
{
sError += "Tax rate must be 0, otherwise, " +
"it can be 0 to 1 inclusively.\n";
}
}
else
{
if (0 < pv.TaxRate)
{
sError += "Tax rate must be zero if TaxCode is empty/null.\n";
}
}
// - IncludesFederalTax must be false when TaxRate is zero.
if (pv.TaxRate == 0 && pv.IncludesFederalTax)
{
sError += "Federal Tax cannot be included when tax rate is zero.\n";
}
if (sError == "")
{
ProvinceCode = pv.ProvinceCode.ToUpper();
Name = Utility.HKoCapitalize(pv.Name);
CountryCode = pv.CountryCode.ToUpper();
TaxCode = pv.TaxCode.ToUpper();
TaxRate = pv.TaxRate;
IncludesFederalTax = pv.IncludesFederalTax;
}
else
{
throw new Exception(sError);
}
}
