#include "game_server/NetworkProtocol.h"
#include <cstdlib>
#include <iostream>
#include <string>

namespace {

void require(bool condition, const char* message)
{
	if (condition) return;
	std::cerr << "NetworkProtocolTests: " << message << '\n';
	std::exit(EXIT_FAILURE);
}

} // namespace

int main()
{
	const nlohmann::json original{
		{"schemaVersion", 1},
		{"campaignId", "battle_zone"},
		{"players", {{"player", {{"hp", 200.0}}}}}
	};
	const std::string message = FRG::makeStateMessage(original);
	nlohmann::json parsed;
	std::string error;
	require(
		FRG::parseStateMessage(message, parsed, error),
		"valid state envelope was rejected");
	require(parsed == original, "state payload did not round trip");

	require(
		!FRG::parseStateMessage(
			R"({"protocolVersion":2,"type":"state","payload":{}})",
			parsed, error),
		"unknown protocol version was accepted");
	require(
		!FRG::parseStateMessage(
			R"({"protocolVersion":1,"type":"command","payload":{}})",
			parsed, error),
		"unknown message type was accepted");
	require(
		!FRG::parseStateMessage("not json", parsed, error),
		"malformed JSON was accepted");

	return EXIT_SUCCESS;
}