package bluej.groupwork.git;

import bluej.groupwork.HistoryInfo;
import bluej.groupwork.LogHistoryListener;
import bluej.groupwork.TeamworkCommandError;
import bluej.groupwork.TeamworkCommandResult;
import bluej.utility.Debug;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.treewalk.TreeWalk;




| A Git history command.
|
| @author Fabio Heday
|
public class GitHistoryCommand
extends GitCommand{     
   private final LogHistoryListener listener;

   
   public GitHistoryCommand(GitRepository repository, LogHistoryListener listener)
   {
      super(repository);
       
      this.listener = listener;     
      }

   
   @Override
   
   public TeamworkCommandResult getResult()
   {
      try (Git repo = Git.open(this.getRepository().getProjectPath())) {
         Iterable<RevCommit> logs = repo.log().call();
         logs.forEach((RevCommit rev) -> {
               
         ArrayList<String> files = new ArrayList<>();
               
         
         
         
         
         try (TreeWalk treeWalk = new TreeWalk(repo.getRepository())){
            treeWalk.addTree(rev.getTree());
            boolean hasNext = treeWalk.next();
            while (hasNext){
               files.add(treeWalk.getPathString());
               hasNext = treeWalk.next();                     
               }                 
            } catch (IOException ex) {
            Debug.reportError(ex.getMessage());                 
            }

               
         
         
         Date date = new Date(rev.getCommitTime() * 1000L);
               
         String dateString = new SimpleDateFormat("yyyy/MM/dd hh:mm:ss").format(date);

               
         HistoryInfo info = new HistoryInfo(files.toArray(new String[files.size()]), "", dateString, rev.getAuthorIdent().getName(), rev.getFullMessage());
         listener.logInfoAvailable(info);             
         });
      } catch (GitAPIException | IOException ex) {            
      return new TeamworkCommandError(ex.getMessage(), ex.getLocalizedMessage());         
      }
       
   return new TeamworkCommandResult();     
   } 
}