#include "tlbmc/hal/sysfs/i2c.h"

#include <cstdint>
#include <string>

#include "absl/strings/str_cat.h"
#include "hal_common_config.pb.h"

namespace milotic_tlbmc {

boost::filesystem::path I2cSysfs::GetBusPath(uint64_t bus) const {
  boost::filesystem::path path(config_.i2c_sysfs_path);
  path /= "i2c-";
  return absl::StrCat(path.string(), bus);
}

bool I2cSysfs::IsDevicePresent(const HalCommonConfig& config) const {
  boost::filesystem::path path = GetBusPath(config.bus());
  path /= GetDeviceDirectoryName(config);
  return boost::filesystem::exists(path);
}

std::string I2cSysfs::GetDeviceDirectoryName(
    const HalCommonConfig& config) const {
  return absl::StrCat(config.bus(), "-",
                      absl::Hex(config.address(), absl::kZeroPad4));
}

}  // namespace milotic_tlbmc