NBP Web API

nbp.d

/+dub.sdl:
dependency "vibe-d" version="~>0.8.0"
+/
import vibe.d;
import std.stdio;

struct RateByDate
{
	string no;
	string effectiveDate;
	@optional double ask;
	@optional double bid;
	@optional double mid;
}

struct Rates
{
	string table;
	string currency;
	string code;
	RateByDate[] rates;
}

struct RateByCurrency
{
	string currency;
	string code;
	@optional double ask;
	@optional double bid;
	@optional double mid;
}

struct Table
{
	string table;
	string no;
	string effectiveDate;
	RateByCurrency[] rates;
}

@path("/api/exchangerates/")
interface NBPWebAPI
{
	@path("rates/:table/:code/")
	Rates getCurrent(string _table, string _code);

	@path("rates/:table/:code/last/:topCount/")
	Rates getLast(string _table, string _code, uint _topCount);

	@path("rates/:table/:code/today/")
	Rates getToday(string _table, string _code);

	@path("rates/:table/:code/:date/")
	Rates getOn(string _table, string _code, string _date);

	@path("rates/:table/:code/:startDate/:endDate/")
	Rates getBetween(string _table, string _code, string _startDate, string _endDate);

	@path("tables/:table/")
	Table[] getCurrent(string _table);

	@path("tables/:table/last/:topCount")
	Table[] getLast(string _table, uint _topCount);

	@path("tables/:table/today")
	Table[] getToday(string _table);

	@path("tables/:table/:date")
	Table[] getOn(string _table, string _date);

	@path("tables/:table/:startDate/:endDate")
	Table[] getBetween(string _table, string _startDate, string _endDate);
}

void main()
{
	auto client = new RestInterfaceClient!NBPWebAPI("http://api.nbp.pl/");
	writeln(client.getCurrent("A", "EUR"));
	writeln(client.getCurrent("B", "EUR"));
	writeln(client.getCurrent("C", "EUR"));
	writeln(client.getLast("A", "USD", 20));
	writeln(client.getToday("C", "CHF"));
	writeln(client.getOn("A", "EUR", "2017-07-24"));
	writeln(client.getBetween("C", "EUR", "2017-12-01", "2017-12-31"));
	writeln(client.getCurrent("A"));
	writeln(client.getLast("C", 20));
	writeln(client.getToday("C"));
	writeln(client.getOn("A", "2017-07-24"));
	writeln(client.getBetween("C", "EUR", "2017-12-01", "2017-12-31"));
}