#include "fsfw-hal/linux/UnixFileGuard.h"

UnixFileGuard::UnixFileGuard(std::string device, int* fileDescriptor, int flags,
        std::string diagnosticPrefix):
        fileDescriptor(fileDescriptor) {
    if(fileDescriptor == nullptr) {
        return;
    }
    *fileDescriptor = open(device.c_str(), flags);
    if (*fileDescriptor < 0) {
#if FSFW_VERBOSE_LEVEL >= 1
#if FSFW_CPP_OSTREAM_ENABLED == 1
        sif::warning << diagnosticPrefix <<"Opening device failed with error code " << errno <<
                "." << std::endl;
        sif::warning << "Error description: " << strerror(errno) << std::endl;
#else
        sif::printError("%sOpening device failed with error code %d.\n", diagnosticPrefix);
        sif::printWarning("Error description: %s\n", strerror(errno));
#endif /* FSFW_CPP_OSTREAM_ENABLED == 1 */
#endif /* FSFW_VERBOSE_LEVEL >= 1 */
        openStatus = OPEN_FILE_FAILED;
    }
}

UnixFileGuard::~UnixFileGuard() {
    if(fileDescriptor != nullptr) {
        close(*fileDescriptor);
    }
}

ReturnValue_t UnixFileGuard::getOpenResult() const {
    return openStatus;
}