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// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "base/version.h"

#include "base/logging.h"
#include "base/number_util.h"
#include "base/util.h"

// Import the generated version_def.h.
#include "base/version_def.h"

namespace mozc {

namespace {
bool StringAsIntegerComparator(const string &lhs, const string &rhs) {
  return NumberUtil::SimpleAtoi(lhs) < NumberUtil::SimpleAtoi(rhs);
}
}  // namespace

string Version::GetMozcVersion() {
  return version::kMozcVersion;
}

#ifdef OS_WIN
wstring Version::GetMozcVersionW() {
  wstring version;
  Util::UTF8ToWide(version::kMozcVersion, &version);
  return version;
}
#endif

int Version::GetMozcVersionMajor() {
  return version::kMozcVersionMajor;
}

int Version::GetMozcVersionMinor() {
  return version::kMozcVersionMinor;
}

int Version::GetMozcVersionBuildNumber() {
  return version::kMozcVersionBuildNumber;
}

int Version::GetMozcVersionRevision() {
  return version::kMozcVersionRevision;
}

bool Version::CompareVersion(const string &lhs, const string &rhs) {
  if (lhs == rhs) {
    return false;
  }
  if (lhs.find("Unknown") != string::npos ||
      rhs.find("Unknown") != string::npos) {
    LOG(WARNING) << "Unknown is given as version";
    return false;
  }
  vector<string> vlhs;
  Util::SplitStringUsing(lhs, ".", &vlhs);
  vector<string> vrhs;
  Util::SplitStringUsing(rhs, ".", &vrhs);
  return lexicographical_compare(vlhs.begin(), vlhs.end(),
                                 vrhs.begin(), vrhs.end(),
                                 StringAsIntegerComparator);
}

Version::BuildType Version::GetMozcBuildType() {
  return version::kMozcBuildType;
}


}  // namespace mozc