public void TestQuarterYear()
{
var qy = new QuarterYear(new DateTime(2014, 1, 1));
Assert.AreEqual(2014, qy.Year);
Assert.AreEqual(1, qy.Quarter);
Assert.IsTrue(qy.IsValid);
qy = new QuarterYear();
Assert.IsFalse(qy.IsValid);
}
/// <summary>
/// Enumerates through location code boundary features.
/// </summary>
/// <param name="quarterYear">A quarter year.</param>
/// <param name="targetProjection">Optional. Provide to reproject from 2927.</param>
/// <returns>Returns an <see cref="IEnumerable<T>"/> of <see cref="Feature"/> objects.</returns>
public static IEnumerable<IFeature> EnumerateLocationCodeBoundaries(QuarterYear quarterYear, ProjectionInfo targetProjection = null)
{
var uri = new Uri(string.Format(_locCodeBoundariesShpUrlPattern, quarterYear.GetDateRange()[0], quarterYear.Quarter));
// Get the path to the TEMP directory.
string tempDirPath = Path.GetTempPath();
string dir = Path.Combine(tempDirPath, Path.GetRandomFileName());
DirectoryInfo dirInfo = Directory.CreateDirectory(dir);
string shp_name = null;
try
{
var client = new HttpClient();
client.GetStreamAsync(uri).ContinueWith(st =>
{
// Write the shapefile to a temporary location.
using (var zipArchive = new ZipArchive(st.Result, ZipArchiveMode.Read))
{
foreach (var entry in zipArchive.Entries)
{
using (var outfile = File.Create(Path.Combine(dir, entry.Name)))
using (var sourcefile = entry.Open())
{
sourcefile.CopyToAsync(outfile).Wait();
}
if (entry.Name.EndsWith(".shp", StringComparison.InvariantCultureIgnoreCase))
{
shp_name = Path.Combine(dir, entry.Name);
}
}
}
}).Wait();
foreach (var kvp in EnumerateLocationCodeBoundaries(shp_name, targetProjection))
{
yield return kvp;
}
}
finally
{
dirInfo.Delete(true);
}
}
public static IEnumerable<IFeature> EnumerateLocationCodeBoundariesWithTaxRates(QuarterYear quarterYear, ProjectionInfo targetProjection = null)
{
ILookup<string, TaxRateItem> taxRates = EnemerateTaxRates(quarterYear).ToLookup(item => item.LocationCode);
IEnumerable<IFeature> boundaries = EnumerateLocationCodeBoundaries(quarterYear, targetProjection);
foreach (var b in boundaries)
{
var taxRateInfo = taxRates[(string)b.DataRow[1]].First();
// Add data columns.
b.DataRow.Table.Columns.AddRange(new DataColumn[] {
new DataColumn("Name", typeof(string)),
new DataColumn("State", typeof(float)),
new DataColumn("Local", typeof(float)),
new DataColumn("Rta", typeof(float)),
new DataColumn("Rate", typeof(float)),
new DataColumn("EffectiveDate", typeof(DateTime)),
new DataColumn("ExpirationDate", typeof(DateTime))
});
// Rename the LOCCODE column.
b.DataRow.Table.Columns["LOCCODE"].ColumnName = "LocationCode";
b.DataRow.SetField("Name", taxRateInfo.Name);
b.DataRow.SetField("State", taxRateInfo.State);
b.DataRow.SetField("Local", taxRateInfo.Local);
b.DataRow.SetField("Rta", taxRateInfo.Rta);
b.DataRow.SetField("Rate", taxRateInfo.Rate);
b.DataRow.SetField("EffectiveDate", taxRateInfo.EffectiveDate);
b.DataRow.SetField("ExpirationDate", taxRateInfo.ExpirationDate);
yield return b;
}
}
/// <summary>
/// Gets the tax rates for the given date. If no date is given, <see cref="DateTime.Today"/> is assumed.
/// </summary>
/// <param name="quarterYear">A quarter year.</param>
/// <returns>Enumeration of <see cref="TaxRateItem"/></returns>
public static IEnumerable<TaxRateItem> EnemerateTaxRates(QuarterYear quarterYear)
{
Uri uri = new Uri(string.Format(_urlPattern, quarterYear.Year, quarterYear.Quarter));
var client = new HttpClient();
Stream zipStream = null;
client.GetStreamAsync(uri).ContinueWith(responseTask =>
{
zipStream = responseTask.Result;
}).Wait();
return EnumerateZippedTaxRateCsv(zipStream);
}
