public static void CreateNext(Organization organization)
{
// Creates all VAT reports that are required up until today.
// Normally this is just one, but in the case of a missed report slot, this function will
// catch up with all the missed ones, too.
DateTime nowUtc = DateTime.UtcNow;
DateTime nextReportDue = NextReportDue(organization);
int reportMonthInterval = organization.VatReportFrequencyMonths;
if (nextReportDue > nowUtc)
{
throw new InvalidOperationException("VAT report is not yet due or has already been generated");
}
DateTime thisReportDate = new DateTime(organization.FirstFiscalYear, 1, 1); // default to first report
VatReports reports = VatReports.ForOrganization(organization, true);
if (reports.Count > 0)
{
reports.Sort(VatReports.VatReportSorterByDate);
VatReport lastReport = reports.Last();
DateTime lastReportDate = new DateTime(lastReport.YearMonthStart / 100, reports.Last().YearMonthStart % 100,
1);
thisReportDate = lastReportDate.AddMonths(lastReport.MonthCount);
}
while (thisReportDate.AddMonths(reportMonthInterval) < nowUtc)
{
VatReport.Create(organization, thisReportDate.Year, thisReportDate.Month, reportMonthInterval);
thisReportDate = thisReportDate.AddMonths(reportMonthInterval);
}
}
public static DateTime NextReportDue(Organization organization)
{
int reportMonthInterval = organization.VatReportFrequencyMonths;
// Get the list of previous VAT reports
VatReports reports = VatReports.ForOrganization(organization, true);
if (reports.Count == 0)
{
DateTime firstReportGenerationTime =
new DateTime(organization.FirstFiscalYear, 1, 1).AddMonths(reportMonthInterval);
// construct VAT report on the first day of the new month
return(firstReportGenerationTime);
}
else // if reports.Count > 0
{
reports.Sort(VatReports.VatReportSorterByDate);
VatReport lastReport = reports.Last();
DateTime lastReportDate = new DateTime(lastReport.YearMonthStart / 100, reports.Last().YearMonthStart % 100,
1);
DateTime nextReportDate = lastReportDate.AddMonths(lastReport.MonthCount);
DateTime nextReportGenerationTime = nextReportDate.AddMonths(reportMonthInterval);
return(nextReportGenerationTime);
}
}
public static string LastReportDescription(Organization organization)
{
VatReports reports = VatReports.ForOrganization(organization, true);
if (reports.Count == 0)
{
throw new InvalidOperationException("Cannot look up last description of nonexistent VAT report collection");
}
reports.Sort(VatReports.VatReportSorterByDate);
return(reports.Last().Description);
}
