/*
    * Copyright (C) 2009, Christian Halstrick <christian.halstrick@sap.com>
    * Copyright (C) 2009, Christian Halstrick, Matthias Sohn, SAP AG
    * Copyright (C) 2009-2010, Google Inc. and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
   * SPDX-License-Identifier: BSD-3-Clause
   */
  
  package org.eclipse.jgit.lib;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  import java.io.IOException;
  
  import org.eclipse.jgit.junit.RepositoryTestCase;
  import org.eclipse.jgit.storage.file.FileBasedConfig;
  import org.junit.Test;
  
  public class ReflogConfigTest extends RepositoryTestCase {
  	@Test
  	public void testlogAllRefUpdates() throws Exception {
  		long commitTime = 1154236443000L;
  		int tz = -4 * 60;
  
  		// check that there are no entries in the reflog and turn off writing
  		// reflogs
  		assertTrue(db.getReflogReader(Constants.HEAD).getReverseEntries()
  				.isEmpty());
  		final FileBasedConfig cfg = db.getConfig();
  		cfg.setBoolean("core", null, "logallrefupdates", false);
  		cfg.save();
  
  		// do one commit and check that reflog size is 0: no reflogs should be
  		// written
  		commit("A Commit\n", commitTime, tz);
  		commitTime += 60 * 1000;
  		assertTrue("Reflog for HEAD still contain no entry", db
  				.getReflogReader(Constants.HEAD).getReverseEntries().isEmpty());
  
  		// set the logAllRefUpdates parameter to true and check it
  		cfg.setBoolean("core", null, "logallrefupdates", true);
  		cfg.save();
  		assertEquals(CoreConfig.LogRefUpdates.TRUE,
  				cfg.getEnum(ConfigConstants.CONFIG_CORE_SECTION, null,
  						ConfigConstants.CONFIG_KEY_LOGALLREFUPDATES,
  						CoreConfig.LogRefUpdates.FALSE));
  
  		// do one commit and check that reflog size is increased to 1
  		commit("A Commit\n", commitTime, tz);
  		commitTime += 60 * 1000;
  		assertTrue(
  				"Reflog for HEAD should contain one entry",
  				db.getReflogReader(Constants.HEAD).getReverseEntries().size() == 1);
  
  		// set the logAllRefUpdates parameter to false and check it
  		cfg.setBoolean("core", null, "logallrefupdates", false);
  		cfg.save();
  		assertEquals(CoreConfig.LogRefUpdates.FALSE,
  				cfg.getEnum(ConfigConstants.CONFIG_CORE_SECTION, null,
  						ConfigConstants.CONFIG_KEY_LOGALLREFUPDATES,
  						CoreConfig.LogRefUpdates.TRUE));
  
  		// do one commit and check that reflog size is 2
  		commit("A Commit\n", commitTime, tz);
  		commitTime += 60 * 1000;
  		assertTrue(
  				"Reflog for HEAD should contain two entries",
  				db.getReflogReader(Constants.HEAD).getReverseEntries().size() == 2);
  
  		// set the logAllRefUpdates parameter to false and check it
  		cfg.setEnum("core", null, "logallrefupdates",
  				CoreConfig.LogRefUpdates.ALWAYS);
  		cfg.save();
  		assertEquals(CoreConfig.LogRefUpdates.ALWAYS,
  				cfg.getEnum(ConfigConstants.CONFIG_CORE_SECTION, null,
  						ConfigConstants.CONFIG_KEY_LOGALLREFUPDATES,
  						CoreConfig.LogRefUpdates.FALSE));
  
  		// do one commit and check that reflog size is 3
  		commit("A Commit\n", commitTime, tz);
  		assertTrue("Reflog for HEAD should contain three entries",
  				db.getReflogReader(Constants.HEAD).getReverseEntries()
  						.size() == 3);
  	}
  
  	private void commit(String commitMsg, long commitTime, int tz)
  			throws IOException {
  		final CommitBuilder commit = new CommitBuilder();
  		commit.setAuthor(new PersonIdent(author, commitTime, tz));
  		commit.setCommitter(new PersonIdent(committer, commitTime, tz));
  		commit.setMessage(commitMsg);
  		ObjectId id;
  		try (ObjectInserter inserter = db.newObjectInserter()) {
  			commit.setTreeId(inserter.insert(new TreeFormatter()));
 			id = inserter.insert(commit);
 			inserter.flush();
 		}
 
 		int nl = commitMsg.indexOf('\n');
 		final RefUpdate ru = db.updateRef(Constants.HEAD);
 		ru.setNewObjectId(id);
 		ru.setRefLogMessage("commit : "
 				+ ((nl == -1) ? commitMsg : commitMsg.substring(0, nl)), false);
 		ru.forceUpdate();
 	}
 }