include java.lang.Runtime;
include java.io.File;
include java.io.InputStream;
include java.io.OutputStream;
include java.io.IOException;
include library.chat;
include developer.file_access;
include java.io.InputStreamReader;
include java.io.BufferedReader;

String getIdOptions()
{
	obj_id self = getSelf();
	if(! isGod(self))
		return null;

	String userId = getStringObjVar(self, "P4USER");
	String password = getStringObjVar(self, "P4PASSWD");

	return "-P " + password + " -u " + userId;
}

boolean isPerforceConfigured()
{
	boolean result = false;
	obj_id self = getSelf();
	if(! isGod(self))
		return false;

	if(hasObjVar(self, "P4USER"))
	{
		String perforceUserId = getStringObjVar(self, "P4USER");
		if(perforceUserId != null && perforceUserId.length() > 0)
		{
			if(hasObjVar(self, "P4PASSWD"))
			{
				String perforcePassword = getStringObjVar(self, "P4PASSWD");
				if(perforcePassword != null && perforcePassword.length() > 0)
				{
					// perform a pretend sync to see if the user and password
					// are correct
					result = system_process.runAndGetExitCode("p4 -P " + perforcePassword + " -u " + perforceUserId + " opened") == 0;
				}
			}
		}
	}
	return result;
}

boolean isLocked(String fileName)
{
	if(! isGod(getSelf()))
		return false;

	boolean result = false;
	if(whoLocked(fileName) != null)
	{
		result = true;
	}
	return result;
}

String whoLocked(String fileName)
{
	if(! isGod(getSelf()))
		return null;

	String lockFileName = fileName + ".scriptlock";
	String lockContents = file_access.readTextFile(lockFileName);
	return lockContents;
}

boolean openExistingFileForExclusiveEdit(String fileName)
{
	boolean result = false;
	obj_id self = getSelf();
	if(! isGod(self))
		return false;

	String userId = getStringObjVar(self, "P4USER");
	String password = getStringObjVar(self, "P4PASSWD");
	if(isLocked(fileName))
	{
		String who = whoLocked(fileName);
		if(who != userId)
		{
			return false;
		}
		else
		{
			return true;
		}
	}

	if(file_access.isWritable(fileName))
	{
		file_access.writeTextFile(fileName + ".scriptlock", userId);
		result = true;
	}
	else if(isPerforceConfigured())
	{
		if(system_process.runAndGetExitCode("p4 -P " + password + " -u " + userId + " edit " + fileName) == 0)
		{
			file_access.writeTextFile(fileName + ".scriptlock", userId);
			result = true;
		}
	}
	return result;
}

String[] opened()
{
	if(! isPerforceConfigured())
	{
		setupPerforce();
		return null;
	}
	String[] result = null;
	obj_id self = getSelf();
	if(! isGod(self))
		return null;

	String userId = getStringObjVar(self, "P4USER");
	String password = getStringObjVar(self, "P4PASSWD");
	Runtime run = Runtime.getRuntime();
	if(run != null)
	{
		result = split(system_process.runAndGetOutput("p4 -P " + password + " -u " + userId + " opened"), '\n');
	}
	return result;
}

void setupPerforce()
{
	obj_id self = getSelf();
	
	if(! isGod(self))
		return;

	// popup perforce username/password page
	int page = createSUIPage("/Script.perforceSetup", self, self);
	if(page >= 0)
	{
		subscribeToSUIEvent(page, sui_event_type.SET_onButton, "btnOk", "onPerforceSetupBtnOk");
		subscribeToSUIPropertyForEvent(page, sui_event_type.SET_onButton, "btnOk", "boxInputUserId.inputUserId", "LocalText");
		subscribeToSUIPropertyForEvent(page, sui_event_type.SET_onButton, "btnOk", "boxInputPassword.inputPassword", "LocalText");
		setSUIAssociatedObject(page, self);
		boolean showResult = showSUIPage(page);
		flushSUIPage(page);
	}
}

String change(int changeList)
{
	obj_id self = getSelf();
	if(! isGod(self))
		return null;

	String result = null;
	String userId = getStringObjVar(self, "P4USER");
	String password = getStringObjVar(self, "P4PASSWD");
	Runtime run = Runtime.getRuntime();
	if(run != null)
	{
		String cmdLine = "p4 -P " + password + " -u " + userId + " change -o";
		if(changeList != 0)
		{
			cmdLine += " " + changeList;
		}
		system_process p = new system_process(cmdLine);
		p.waitFor();
		if(p.getExitValue() == 0)
		{
			result = p.getOutput();
		}
	}
	return result;
}

String where(String fileLocation)
{
	return system_process.runAndGetOutput("p4 " + getIdOptions() + " where " + fileLocation);
}


boolean submit(String changeDescription, resizeable String[] resultText)
{
	if(! isGod(getSelf()))
		return false;

	// build a file list from the description
	String[] changeLines = split(changeDescription, '\n');
	int iter = 0;
	boolean readingFiles = false;
	resizeable String[] fileLocks = new Vector();
	for(iter = 0; iter < changeLines.length; ++iter)
	{
		if(readingFiles)
		{
			try
			{
				java.util.StringTokenizer st = new java.util.StringTokenizer(changeLines[iter], " \t\n");
				String first = st.nextToken();
				if(first != null)
				{
					String w = where(first);
					String[] locs = split(w, ' ');
					if(locs[2] != null)
					{
						String fileName = locs[2].trim();
						fileName += ".scriptlock";
						fileLocks.add(fileName);
					}
				}
			}
			catch(java.util.NoSuchElementException e)
			{
				// ignore lines that don't conform the the expected output
			}
		}
		else if(changeLines[iter].startsWith("Files:"))
		{
			readingFiles = true;
		}
	}

	obj_id self = getSelf();
	boolean result = false;
	String cmdLine = "p4 " + getIdOptions() + " submit -i";
	system_process p = new system_process(cmdLine);
	if(p != null)
	{
		p.putAndCloseInput(changeDescription);
		p.waitFor();
		if(p.getExitValue() == 0)
		{
			resultText.add(p.getOutput());
			// remove file locks
			for(iter = 0; iter < fileLocks.length; ++iter)
			{
				File f = new File(fileLocks[iter]);
				if(f.exists())
				{
					if(f.canWrite())
					{
						if(f.isFile())
						{
							if(! f.delete())
							{
								resultText.add("failed to remove lock " + fileLocks[iter] + ": could not delete file");
							}
						}
						else
						{
							resultText.add("failed to remove lock " + fileLocks[iter] + ": not a file");
						}
					}
					else
					{
						resultText.add(fileLocks[iter] + ": not writeable");
					}
				}
				else
				{
					resultText.add("failed to remove file lock " + fileLocks[iter] + ": it does not exist");
				}
			}
		}
		else
		{
			resultText.add(p.getOutput());
			resultText.add("Failed to execute " + cmdLine);
		}
	}
	else
	{
		resultText.add("Could not execute " + cmdLine);
	}

	return result;
}

String diff(String fileSpec)
{
	if(! isGod(getSelf()))
		return null;

	String result = null;
	if(fileSpec != null)
	{
		result = system_process.runAndGetOutput("p4 " + getIdOptions() + " diff -dU150 " + fileSpec);
	}
	else
	{
		result = system_process.runAndGetOutput("p4 " + getIdOptions() + " diff -dU150");
	}
	return result;
}