public string Request(TimeSeriesParameters parameters)
{
using (WebClient client = new WebClient())
{
return(client.DownloadString(Utility.GetURI(parameters, _baseUrls, _apiKey)));
}
}
public byte[] DownloadSeries(TimeSeriesParameters parameters, DownloadType downloadType)
{
using (WebClient client = new WebClient())
{
string url = $"{Utility.GetURI(parameters, _baseUrls, _apiKey)}&download_type={Utility.GetDownloadType(downloadType)}";
return(client.DownloadData(url));
}
}
public async Task <DataSet> GetDataSetAsync(TimeSeriesParameters parameters)
{
parameters.ReturnFormat = ReturnFormat.JSON;
string content = await RequestAsync(parameters);
JObject jContent = JObject.Parse(content);
string dataSetKey = jContent.ContainsKey("dataset_data") ? "dataset_data" : "dataset";
return(JsonConvert.DeserializeObject <DataSet>(jContent[dataSetKey].ToString()));
}
public async Task <DatabaseMetaData> GetDatabaseMetaDataAsync(TimeSeriesParameters parameters)
{
parameters.ReturnFormat = ReturnFormat.JSON;
parameters.Metadata = true;
string content = await RequestAsync(parameters);
JObject jContent = JObject.Parse(content);
return(JsonConvert.DeserializeObject <DatabaseMetaData>(jContent["database"].ToString()));
}
private static void GetTimeSeriesData()
{
TimeSeriesParameters parameters = new TimeSeriesParameters();
Console.WriteLine("Database Code *:");
parameters.DatabaseCode = Console.ReadLine();
Console.WriteLine("Dataset Code *:");
parameters.DatasetCode = Console.ReadLine();
Console.WriteLine("Return Format (JSON, CSV, or XML) *:");
parameters.ReturnFormat = GetEnum <ReturnFormat>();
Console.WriteLine("Limit:");
parameters.Limit = ParseInt(Console.ReadLine());
Console.WriteLine("Column Index:");
parameters.ColumnIndex = ParseInt(Console.ReadLine());
Console.WriteLine("Collapse (Annual, Quarterly, Monthly, Weekly, Daily):");
parameters.Collapse = GetEnum <Collapse>(Collapse.None);
Console.WriteLine("Transform (Diff, Cumul, Normalize, RDiff, RDiffFrom):");
parameters.Transform = GetEnum <Transform>(Transform.None);
Console.WriteLine("Meta Data (Y / N):");
parameters.Metadata = ParseBool(Console.ReadLine());
Console.WriteLine("Order (Ascending / Descending):");
parameters.Order = GetEnum <Order>(Order.Ascending);
Console.WriteLine("Start Date (YYYY-MM-dd):");
parameters.StartDate = ParseDate(Console.ReadLine());
Console.WriteLine("End Date (YYYY-MM-dd):");
parameters.EndDate = ParseDate(Console.ReadLine());
Console.WriteLine("Result:");
Console.WriteLine(_client.Request(parameters));
}
public static Uri GetURI(TimeSeriesParameters parameters, BaseUrls baseUrls, string apiKey)
{
string url = $"{baseUrls.TimeSeriesUrl}{parameters.DatabaseCode}";
if (!string.IsNullOrEmpty(parameters.DatasetCode))
{
if (parameters.Metadata.HasValue)
{
url += parameters.Metadata.Value ? $"/{parameters.DatasetCode}/metadata" : $"/{parameters.DatasetCode}/data";
}
else
{
url += $"/{parameters.DatasetCode}";
}
}
url += $".{GetReturnFormat(parameters.ReturnFormat)}";
UriBuilder uriBuilder = new UriBuilder(url);
string uriQuery = $"api_key={apiKey}";
if (parameters.Limit.HasValue)
{
uriQuery += $"&limit={parameters.Limit}";
}
if (parameters.ColumnIndex.HasValue)
{
uriQuery += $"&column_index={parameters.ColumnIndex}";
}
if (parameters.StartDate.HasValue)
{
uriQuery += $"&start_date={parameters.StartDate.Value.ToString("yyyy-MM-dd")}";
}
if (parameters.EndDate.HasValue)
{
uriQuery += $"&end_date={parameters.EndDate.Value.ToString("yyyy-MM-dd")}";
}
if (parameters.Order != Order.None)
{
uriQuery += $"&order={GetOrder(parameters.Order)}";
}
if (parameters.Collapse != Collapse.None)
{
uriQuery += $"&collapse={GetCollapse(parameters.Collapse)}";
}
if (parameters.Transform != Transform.None)
{
uriQuery += $"&transform={GetTransform(parameters.Transform)}";
}
uriBuilder.Query = uriQuery;
return(uriBuilder.Uri);
}
