public static TaxRuleCollection LoadForBasket(int basketId, TaxAddress address, User user)
{
List <TaxRule> potentialTaxRules = new List <TaxRule>();
//GET ALL TAX CODES THAT ARE PRESENT IN THE BASKET
StringBuilder selectQuery = new StringBuilder();
selectQuery.Append("SELECT DISTINCT TaxCodeId FROM ac_BasketItems");
selectQuery.Append(" WHERE BI.BasketId = @basketId AND TaxCodeId > 0");
Database database = Token.Instance.Database;
DbCommand selectCommand = database.GetSqlStringCommand(selectQuery.ToString());
database.AddInParameter(selectCommand, "@basketId", System.Data.DbType.Int32, basketId);
List <int> taxCodes = new List <int>();
//EXECUTE THE COMMAND
using (IDataReader dr = database.ExecuteReader(selectCommand))
{
while (dr.Read())
{
taxCodes.Add(dr.GetInt32(0));
}
dr.Close();
}
//THIS WILL RETURN ALL TAX RULES THAT COULD APPLY TO PRODUCT IN THE BASKET
//FOR THE GIVEN ADDRESS AND USER
return(LoadForTaxCodes(taxCodes.ToArray(), address, user));
}
/// <summary>
/// Determines in a tax applies based on the given addresses.
/// </summary>
/// <param name="billingAddress">The billing address</param>
/// <param name="shippingAddress">The shipping address</param>
/// <returns>True if the tax applies to the given addresses</returns>
/// <remarks>This method determines which address to use based on nexus, and indicates whether the tax applies for the given set.</remarks>
public bool AppliesToAddress(TaxAddress billingAddress, TaxAddress shippingAddress)
{
//SHORTCUT IF THERE IS NO ZONE FILTER
if (this.TaxRuleShipZones.Count == 0)
{
return(true);
}
if (this.UseBillingAddress)
{
return(AppliesToAddress(billingAddress));
}
return(AppliesToAddress(shippingAddress));
}
/// <summary>
/// Determines in a tax applies based on the given address.
/// </summary>
/// <param name="address">The address used to determine tax liability</param>
/// <returns>True if the tax applies to the given address</returns>
/// <remarks>This method does not check nexus, it only decides whether the shipzone filter is met by the given address.</remarks>
public bool AppliesToAddress(TaxAddress address)
{
if (this.TaxRuleShipZones.Count == 0)
{
return(true);
}
ShipZoneCollection shipZones = address.ShipZones;
foreach (ShipZone zone in shipZones)
{
if (this.TaxRuleShipZones.IndexOf(this.TaxRuleId, zone.ShipZoneId) > -1)
{
return(true);
}
}
return(false);
}
/// <summary>
/// Loads rules that may apply for the given tax code and address information
/// </summary>
/// <param name="taxCodeId">Tax code Id</param>
/// <param name="taxAddress">Address for which to load the tax rules</param>
/// <param name="user">User for which to load the tax rules</param>
/// <returns>Collection of rules that apply</returns>
public static TaxRuleCollection LoadForTaxCode(int taxCodeId, TaxAddress taxAddress, User user)
{
int[] taxCodeIds = { taxCodeId };
return(LoadForTaxCodes(taxCodeIds, taxAddress, user));
}
public static TaxRuleCollection LoadForTaxCodes(int[] taxCodeIds, TaxAddress taxAddress, User user)
{
//IF WE DO NOT HAVE VALID TAX CODES THERE ARE NO RULES
if ((taxCodeIds == null) || (taxCodeIds.Length == 0))
{
return(new TaxRuleCollection());
}
TaxRuleCollection potentialTaxRules = new TaxRuleCollection();
//FIRST DETERMINE THE ZONE(S) FOR THE Tax Address
ShipZoneCollection shipmentZoneCollection = taxAddress.ShipZones;
//BUILD A LIST OF ZONEIDS FOR QUERY CRITERIA
StringBuilder selectQuery = new StringBuilder();
selectQuery.Append("SELECT DISTINCT " + TaxRule.GetColumnNames("TR"));
selectQuery.Append(" FROM (ac_TaxRules TR INNER JOIN ac_TaxRuleTaxCodes TRTC ON TR.TaxRuleId = TRTC.TaxRuleId)");
selectQuery.Append(" LEFT JOIN ac_TaxRuleShipZones TRSZ ON TR.TaxRuleId = TRSZ.TaxRuleId");
selectQuery.Append(" WHERE StoreId = @storeId ");
if (taxCodeIds.Length == 1)
{
selectQuery.Append(" AND TRTC.TaxCodeId = " + taxCodeIds[0].ToString());
}
else
{
selectQuery.Append(" AND TRTC.TaxCodeId IN (" + AlwaysConvert.ToList(",", taxCodeIds) + ")");
}
//PROCESS SHIPZONE EXCLUSION
selectQuery.Append(" AND (TRSZ.ShipZoneId IS NULL");
for (int i = 0; i < shipmentZoneCollection.Count; i++)
{
selectQuery.Append(" OR TRSZ.ShipZoneId = @shipZoneId" + i.ToString());
}
selectQuery.Append(") ORDER BY TR.Priority");
Database database = Token.Instance.Database;
DbCommand selectCommand = database.GetSqlStringCommand(selectQuery.ToString());
database.AddInParameter(selectCommand, "@storeId", System.Data.DbType.Int32, Token.Instance.StoreId);
//ADD IN NUMBERED ZONE PARAMETERS
for (int i = 0; i < shipmentZoneCollection.Count; i++)
{
database.AddInParameter(selectCommand, "@shipZoneId" + i.ToString(), System.Data.DbType.Int32, shipmentZoneCollection[i].ShipZoneId);
}
//EXECUTE THE COMMAND
using (IDataReader dr = database.ExecuteReader(selectCommand))
{
while (dr.Read())
{
TaxRule taxRule = new TaxRule();
TaxRule.LoadDataReader(taxRule, dr);
potentialTaxRules.Add(taxRule);
}
dr.Close();
}
//PROCESS GROUP EXCLUSIONS
TaxRuleCollection potentialTaxRulesWithGroupFilter = new TaxRuleCollection();
foreach (TaxRule taxRule in potentialTaxRules)
{
if (taxRule.AppliesToUser(user))
{
potentialTaxRulesWithGroupFilter.Add(taxRule);
}
}
//RETURN POTENTIAL TAXES
return(potentialTaxRulesWithGroupFilter);
}
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