#include <cstdlib>
#include <memory>

#include <relpipe/cli/CLI.h>
#include <relpipe/cli/RelpipeCLIException.h>
#include <relpipe/reader/Factory.h>
#include <relpipe/reader/RelationalReader.h>
#include <relpipe/reader/RelpipeReaderException.h>


using namespace relpipe::cli;
using namespace relpipe::reader;

class DemoHandler : public handlers::RelationalReaderStringHadler {

	void startRelation(string_t name, std::vector<std::pair<string_t, TypeId> > attributes) override {
		std::wcout << L"start relation: " << name << std::endl << std::flush;
		for (int i = 0; i < attributes.size(); i++) {
			std::wcout << L"\tcolumn: " << attributes[i].first << L" / " << (int) attributes[i].second << std::endl << std::flush;
		}
	}

	void attribute(const string_t& value) override {
		std::wcout << L"attribute: " << value << std::endl << std::flush;
	}


};

int main(int argc, char** argv) {
	CLI cli(argc, argv);

	int resultCode = CLI::EXIT_CODE_UNEXPECTED_ERROR;

	try {
		// if (cli.arguments().size() > 0) {

		// const wstring commandName = cli.arguments()[0];
		// vector<wstring> arguments(cli.arguments().size() - 1);
		// for (int i = 1; i < cli.arguments().size(); i++) {
		//	arguments[i - 1] = cli.arguments()[i];
		// }

		std::shared_ptr<RelationalReader> reader(Factory::create(std::cin));
		DemoHandler handler;
		reader->addHandler(&handler);
		reader->process();

		resultCode = CLI::EXIT_CODE_SUCCESS;

		// } else {
		//	throw RelpipeCLIException(L"Missing command…", CLI::EXIT_CODE_BAD_SYNTAX);
		// }
	} catch (RelpipeCLIException e) {
		fwprintf(stderr, L"Caught CLI exception: %ls\n", e.getMessge().c_str());
		fwprintf(stderr, L"Debug: Input stream: eof=%ls, lastRead=%d\n", (cin.eof() ? L"true" : L"false"), cin.gcount());
		resultCode = e.getExitCode();
	} catch (RelpipeReaderException e) {
		fwprintf(stderr, L"Caught Reader exception: %ls\n", e.getMessge().c_str());
		fwprintf(stderr, L"Debug: Input stream: eof=%ls, lastRead=%d\n", (cin.eof() ? L"true" : L"false"), cin.gcount());
		resultCode = CLI::EXIT_CODE_DATA_ERROR;
	}

	return resultCode;
}