/*
 * EnvironmentVarLocation.cpp
 *
 *  Created on: Oct 12, 2019
 *      Author: Gabriele Contini
 */

#include <licensecc_properties.h>

#include "../base/string_utils.h"
#include "EnvironmentVarLocation.hpp"
#include "../base/file_utils.hpp"

namespace license {
namespace locate {
using namespace std;

EnvironmentVarLocation::EnvironmentVarLocation() : LocatorStrategy("EnvironmentVarLocation") {}

EnvironmentVarLocation::~EnvironmentVarLocation() {}

const vector<string> EnvironmentVarLocation::license_locations(EventRegistry &eventRegistry) {
	vector<string> licenseFileFoundWithEnvVariable;

	const string varName(LCC_LICENSE_LOCATION_ENV_VAR);
	if (varName.length() > 0) {
		// var name is defined in header files.
		char *env_var_value = getenv(LCC_LICENSE_LOCATION_ENV_VAR);
		if (env_var_value != nullptr && env_var_value[0] != '\0') {
			const vector<string> declared_positions = license::split_string(string(env_var_value), ';');
			licenseFileFoundWithEnvVariable =
				license::filter_existing_files(declared_positions, eventRegistry, LCC_LICENSE_LOCATION_ENV_VAR);
		} else {
			eventRegistry.addEvent(ENVIRONMENT_VARIABLE_NOT_DEFINED);
		}
	}
	return licenseFileFoundWithEnvVariable;
}

}  // namespace locate
}  // namespace license