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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.poshi.runner.logger;

import com.liferay.poshi.runner.PoshiRunnerContext;
import com.liferay.poshi.runner.PoshiRunnerGetterUtil;
import com.liferay.poshi.runner.PoshiRunnerStackTraceUtil;
import com.liferay.poshi.runner.PoshiRunnerVariablesUtil;
import com.liferay.poshi.runner.exception.PoshiRunnerLoggerException;
import com.liferay.poshi.runner.selenium.LiferaySeleniumHelper;
import com.liferay.poshi.runner.selenium.WebDriverHelper;
import com.liferay.poshi.runner.selenium.WebDriverUtil;
import com.liferay.poshi.runner.util.HtmlUtil;
import com.liferay.poshi.runner.util.StringUtil;
import com.liferay.poshi.runner.util.Validator;

import java.util.List;
import java.util.Objects;

import org.dom4j.Element;

import org.openqa.selenium.WebDriver;

/**
 * @author Michael Hashimoto
 * @author Peter Yoo
 */
public final class CommandLoggerHandler {

	public static void failCommand(Element element)
		throws PoshiRunnerLoggerException {

		if (!_isCurrentCommand(element)) {
			return;
		}

		try {
			_commandElement = null;

			_failLineGroupLoggerElement(_lineGroupLoggerElement);

			LoggerElement xmlLoggerElement =
				XMLLoggerHandler.getXMLLoggerElement(
					PoshiRunnerStackTraceUtil.getSimpleStackTrace());

			_updateStatus(xmlLoggerElement, "fail");
		}
		catch (Throwable t) {
			throw new PoshiRunnerLoggerException(t.getMessage(), t);
		}
	}

	public static String getCommandLogText() {
		return _commandLogLoggerElement.toString();
	}

	public static int getErrorLinkId() {
		return _errorLinkId - 1;
	}

	public static void logClassCommandName(String classCommandName) {
		LoggerElement dividerLineLoggerElement = _getDividerLineLoggerElement(
			classCommandName);

		_commandLogLoggerElement.addChildLoggerElement(
			dividerLineLoggerElement);
	}

	public static void logExternalMethodCommand(
			Element element, List arguments, String returnValue)
		throws Exception {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName("line-group linkable");
		loggerElement.setName("li");
		loggerElement.addChildLoggerElement(
			_getExternalMethodLineLoggerElement(
				element, arguments, returnValue));

		_lineGroupLoggerElement = loggerElement;

		_commandLogLoggerElement.addChildLoggerElement(_lineGroupLoggerElement);

		LoggerElement xmlLoggerElement = XMLLoggerHandler.getXMLLoggerElement(
			PoshiRunnerStackTraceUtil.getSimpleStackTrace());

		_linkLoggerElements(xmlLoggerElement);
	}

	public static void logMessage(Element element)
		throws PoshiRunnerLoggerException {

		try {
			_lineGroupLoggerElement = _getMessageGroupLoggerElement(element);

			_commandLogLoggerElement.addChildLoggerElement(
				_lineGroupLoggerElement);

			LoggerElement xmlLoggerElement =
				XMLLoggerHandler.getXMLLoggerElement(
					PoshiRunnerStackTraceUtil.getSimpleStackTrace());

			_linkLoggerElements(xmlLoggerElement);

			_updateStatus(xmlLoggerElement, "pass");
		}
		catch (Throwable t) {
			throw new PoshiRunnerLoggerException(t.getMessage(), t);
		}
	}

	public static void logSeleniumCommand(
		Element element, List arguments) {

		LoggerElement loggerElement = _lineGroupLoggerElement.loggerElement(
			"ul");

		loggerElement.addChildLoggerElement(
			_getRunLineLoggerElement(element, arguments));
	}

	public static void passCommand(Element element) {
		if (!_isCurrentCommand(element)) {
			return;
		}

		_commandElement = null;

		LoggerElement xmlLoggerElement = XMLLoggerHandler.getXMLLoggerElement(
			PoshiRunnerStackTraceUtil.getSimpleStackTrace());

		_updateStatus(xmlLoggerElement, "pass");
	}

	public static void startCommand(Element element)
		throws PoshiRunnerLoggerException {

		if (!_isCommand(element)) {
			return;
		}

		try {
			_takeScreenshot("before", _errorLinkId);

			_commandElement = element;

			_lineGroupLoggerElement = _getLineGroupLoggerElement(element);

			_commandLogLoggerElement.addChildLoggerElement(
				_lineGroupLoggerElement);

			LoggerElement xmlLoggerElement =
				XMLLoggerHandler.getXMLLoggerElement(
					PoshiRunnerStackTraceUtil.getSimpleStackTrace());

			_linkLoggerElements(xmlLoggerElement);

			_updateStatus(xmlLoggerElement, "pending");
		}
		catch (Throwable t) {
			throw new PoshiRunnerLoggerException(t.getMessage(), t);
		}
	}

	public static void startRunning() {
		_commandLogLoggerElement = new LoggerElement("commandLog");

		_commandLogLoggerElement.setAttribute("data-logid", "01");
		_commandLogLoggerElement.setClassName("collapse command-log running");
		_commandLogLoggerElement.setName("ul");
		_commandLogLoggerElement.setWrittenToLogger(true);
	}

	public static void stopRunning() {
		_commandLogLoggerElement.removeClassName("running");
	}

	public static void warnCommand(Element element)
		throws PoshiRunnerLoggerException {

		if (!_isCurrentCommand(element)) {
			return;
		}

		try {
			_commandElement = null;

			_warningLineGroupLoggerElement(_lineGroupLoggerElement);

			LoggerElement xmlLoggerElement =
				XMLLoggerHandler.getXMLLoggerElement(
					PoshiRunnerStackTraceUtil.getSimpleStackTrace());

			_updateStatus(xmlLoggerElement, "warning");
		}
		catch (Throwable t) {
			throw new PoshiRunnerLoggerException(t.getMessage(), t);
		}
	}

	private static void _failLineGroupLoggerElement(
			LoggerElement lineGroupLoggerElement)
		throws Exception {

		lineGroupLoggerElement.addClassName("failed");

		lineGroupLoggerElement.addChildLoggerElement(
			_getErrorContainerLoggerElement());

		LoggerElement childContainerLoggerElement =
			lineGroupLoggerElement.loggerElement("ul");

		List runLineLoggerElements =
			childContainerLoggerElement.loggerElements("li");

		if (!runLineLoggerElements.isEmpty()) {
			LoggerElement runLineLoggerElement = runLineLoggerElements.get(
				runLineLoggerElements.size() - 1);

			runLineLoggerElement.addClassName("error-line");
		}
	}

	private static LoggerElement _getButtonLoggerElement(int btnLinkId) {
		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setAttribute("data-btnlinkid", "command-" + btnLinkId);
		loggerElement.setClassName("btn expand-toggle");

		return loggerElement;
	}

	private static LoggerElement _getChildContainerLoggerElement(
		int btnLinkId) {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setAttribute("data-btnlinkid", "command-" + btnLinkId);
		loggerElement.setClassName("child-container collapse");
		loggerElement.setName("ul");

		return loggerElement;
	}

	private static LoggerElement _getConsoleLoggerElement(int errorLinkId) {
		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setAttribute(
			"data-errorlinkid", "console-" + errorLinkId);
		loggerElement.setClassName("console errorPanel toggle");

		loggerElement.addChildLoggerElement(
			SummaryLoggerHandler.getSummarySnapshotLoggerElement());

		return loggerElement;
	}

	private static LoggerElement _getDividerLineLoggerElement(
		String classCommandName) {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName("divider-line");
		loggerElement.setText(classCommandName);

		return loggerElement;
	}

	private static LoggerElement _getErrorContainerLoggerElement()
		throws Exception {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName("error-container hidden");

		loggerElement.addChildLoggerElement(
			_getConsoleLoggerElement(_errorLinkId));

		loggerElement.addChildLoggerElement(
			_getScreenshotsLoggerElement(_errorLinkId));

		_errorLinkId++;

		return loggerElement;
	}

	private static LoggerElement _getExternalMethodLineLoggerElement(
			Element element, List arguments, String returnValue)
		throws Exception {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName("line-container");
		loggerElement.setText(
			_getExternalMethodLineText(element, arguments, returnValue));

		return loggerElement;
	}

	private static String _getExternalMethodLineText(
			Element element, List arguments, String returnValue)
		throws Exception {

		StringBuilder sb = new StringBuilder();

		sb.append(_getLineItemText("misc", "Running "));
		sb.append(
			_getLineItemText("command-name", element.attributeValue("method")));

		if (!arguments.isEmpty()) {
			sb.append(_getLineItemText("misc", " with parameters"));

			for (String argument : arguments) {
				argument = "Arg: " + argument;

				sb.append(
					_getLineItemText("param-value", HtmlUtil.escape(argument)));
			}
		}

		if (returnValue != null) {
			returnValue = "Return: " + returnValue;

			sb.append(
				_getLineItemText("param-value", HtmlUtil.escape(returnValue)));
		}

		return sb.toString();
	}

	private static LoggerElement _getLineContainerLoggerElement(Element element)
		throws Exception {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName("line-container");
		loggerElement.setText(_getLineContainerText(element));

		return loggerElement;
	}

	private static String _getLineContainerText(Element element)
		throws Exception {

		StringBuilder sb = new StringBuilder();

		sb.append(_getLineItemText("misc", "Running "));

		String classCommandName = element.attributeValue("function");

		sb.append(_getLineItemText("command-name", classCommandName));

		String className =
			PoshiRunnerGetterUtil.getClassNameFromClassCommandName(
				classCommandName);

		int functionLocatorCount = PoshiRunnerContext.getFunctionLocatorCount(
			className);

		for (int i = 0; i < functionLocatorCount; i++) {
			String locatorKey = "locator" + (i + 1);

			if (PoshiRunnerVariablesUtil.containsKeyInExecuteMap(locatorKey)) {
				sb.append(_getLineItemText("misc", " with "));
				sb.append(_getLineItemText("param-type", locatorKey));

				String paramValue =
					PoshiRunnerVariablesUtil.getValueFromExecuteMap(locatorKey);

				sb.append(
					_getLineItemText(
						"param-value", HtmlUtil.escape(paramValue)));
			}

			String valueKey = "value" + (i + 1);

			if (PoshiRunnerVariablesUtil.containsKeyInExecuteMap(valueKey)) {
				sb.append(_getLineItemText("misc", " with "));
				sb.append(_getLineItemText("param-type", valueKey));

				String paramValue =
					PoshiRunnerVariablesUtil.getValueFromExecuteMap(valueKey);

				sb.append(
					_getLineItemText(
						"param-value", HtmlUtil.escape(paramValue)));
			}
		}

		return sb.toString();
	}

	private static LoggerElement _getLineGroupLoggerElement(Element element)
		throws Exception {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName("line-group linkable");
		loggerElement.setName("li");

		loggerElement.addChildLoggerElement(
			_getButtonLoggerElement(_btnLinkId));

		loggerElement.addChildLoggerElement(
			_getLineContainerLoggerElement(element));

		loggerElement.addChildLoggerElement(
			_getChildContainerLoggerElement(_btnLinkId));

		_btnLinkId++;

		return loggerElement;
	}

	private static String _getLineItemText(String className, String text) {
		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName(className);
		loggerElement.setID(null);
		loggerElement.setName("span");
		loggerElement.setText(text);

		return loggerElement.toString();
	}

	private static LoggerElement _getMessageContainerLoggerElement(
			Element element)
		throws Exception {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName("line-container");
		loggerElement.setText(_getMessageContainerText(element));

		return loggerElement;
	}

	private static String _getMessageContainerText(Element element)
		throws Exception {

		String message = element.attributeValue("message");

		if (message == null) {
			message = element.getText();
		}

		return PoshiRunnerVariablesUtil.replaceCommandVars(message);
	}

	private static LoggerElement _getMessageGroupLoggerElement(Element element)
		throws Exception {

		LoggerElement loggerElement = new LoggerElement();

		String className = "line-group linkable";

		if (_isFail(element)) {
			className = className + " failed";
		}

		loggerElement.setClassName(className);

		loggerElement.setName("li");

		loggerElement.addChildLoggerElement(
			_getMessageContainerLoggerElement(element));

		return loggerElement;
	}

	private static LoggerElement _getRunLineLoggerElement(
		Element element, List arguments) {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName("run-line");
		loggerElement.setName("li");
		loggerElement.setText(_getRunLineText(element, arguments));

		return loggerElement;
	}

	private static String _getRunLineText(
		Element element, List arguments) {

		StringBuilder sb = new StringBuilder();

		sb.append(_getLineItemText("misc", "Running "));
		sb.append(
			_getLineItemText(
				"command-name", element.attributeValue("selenium")));

		if (!arguments.isEmpty()) {
			sb.append(_getLineItemText("misc", " with parameters"));

			for (String argument : arguments) {
				sb.append(
					_getLineItemText("param-value", HtmlUtil.escape(argument)));
			}
		}

		return sb.toString();
	}

	private static LoggerElement _getScreenshotContainerLoggerElement(
		String screenshotName, int errorLinkId) {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setClassName(screenshotName + " screenshot-container");

		loggerElement.addChildLoggerElement(
			_getScreenshotLoggerElement(screenshotName, errorLinkId));

		loggerElement.addChildLoggerElement(
			_getScreenshotSpanLoggerElement(
				StringUtil.upperCaseFirstLetter(screenshotName)));

		return loggerElement;
	}

	private static LoggerElement _getScreenshotLoggerElement(
		String screenshotName, int errorLinkId) {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setAttribute("alt", screenshotName + errorLinkId);
		loggerElement.setAttribute(
			"src", "screenshots/" + screenshotName + errorLinkId + ".jpg");
		loggerElement.setName("img");

		return loggerElement;
	}

	private static LoggerElement _getScreenshotsLoggerElement(int errorLinkId)
		throws Exception {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setAttribute(
			"data-errorlinkid", "screenshots-" + errorLinkId);
		loggerElement.setClassName("errorPanel screenshots toggle");

		loggerElement.addChildLoggerElement(
			_getScreenshotContainerLoggerElement("before", errorLinkId));

		_takeScreenshot("after", errorLinkId);

		loggerElement.addChildLoggerElement(
			_getScreenshotContainerLoggerElement("after", errorLinkId));

		return loggerElement;
	}

	private static LoggerElement _getScreenshotSpanLoggerElement(
		String screenshotName) {

		LoggerElement loggerElement = new LoggerElement();

		loggerElement.setName("span");
		loggerElement.setText(StringUtil.upperCaseFirstLetter(screenshotName));

		return loggerElement;
	}

	private static boolean _isCommand(Element element) {
		if (!Objects.equals(element.getName(), "condition") &&
			!Objects.equals(element.getName(), "execute")) {

			return false;
		}

		if (Validator.isNull(element.attributeValue("function"))) {
			return false;
		}

		if (_commandElement != null) {
			return false;
		}

		return true;
	}

	private static boolean _isCurrentCommand(Element element) {
		return element.equals(_commandElement);
	}

	private static boolean _isFail(Element element) {
		return Objects.equals(
			StringUtil.toLowerCase(element.getName()), "fail");
	}

	private static void _linkLoggerElements(LoggerElement xmlLoggerElement) {
		String functionLinkID = xmlLoggerElement.getAttributeValue(
			"data-functionlinkid");

		if (functionLinkID != null) {
			_functionLinkId = Integer.parseInt(functionLinkID.substring(15));
		}

		xmlLoggerElement.setAttribute(
			"data-functionlinkid", "functionLinkId-" + _functionLinkId);

		_lineGroupLoggerElement.setAttribute(
			"data-functionlinkid", "functionLinkId-" + _functionLinkId);

		_functionLinkId++;
	}

	private static void _setHTMLSource() throws Exception {
		WebDriver webDriver = WebDriverUtil.getWebDriver();

		_htmlSource = webDriver.getPageSource();
	}

	private static void _takeScreenshot(String screenshotName, int errorLinkId)
		throws Exception {

		String testClassCommandName =
			PoshiRunnerContext.getTestCaseCommandName();

		testClassCommandName = StringUtil.replace(
			testClassCommandName, "#", "_");

		LiferaySeleniumHelper.captureScreen(
			PoshiRunnerGetterUtil.getCanonicalPath(".") + "/test-results/" +
				testClassCommandName + "/screenshots/" + screenshotName +
					errorLinkId + ".jpg");
	}

	private static void _updateStatus(
		LoggerElement loggerElement, String status) {

		loggerElement.setAttribute("data-status01", status);

		LoggerUtil.executeJavaScript(
			"loggerInterface.fire('command-complete', '" +
				loggerElement.getID() + "')");
	}

	private static void _warningLineGroupLoggerElement(
			LoggerElement lineGroupLoggerElement)
		throws Exception {

		lineGroupLoggerElement.addClassName("warning");

		lineGroupLoggerElement.addChildLoggerElement(
			_getErrorContainerLoggerElement());

		LoggerElement childContainerLoggerElement =
			lineGroupLoggerElement.loggerElement("ul");

		List runLineLoggerElements =
			childContainerLoggerElement.loggerElements("li");

		if (!runLineLoggerElements.isEmpty()) {
			LoggerElement runLineLoggerElement = runLineLoggerElements.get(
				runLineLoggerElements.size() - 1);

			runLineLoggerElement.addClassName("warning-line");
		}
	}

	private static void _writeWebPage(int errorLinkId) throws Exception {
		String testClassCommandName =
			PoshiRunnerContext.getTestCaseCommandName();

		testClassCommandName = StringUtil.replace(
			testClassCommandName, "#", "_");

		WebDriverHelper.saveWebPage(
			PoshiRunnerGetterUtil.getCanonicalPath(".") + "/test-results/" +
				testClassCommandName + "/web-pages/index" + errorLinkId +
					".html",
			_htmlSource);
	}

	private static int _btnLinkId;
	private static Element _commandElement;
	private static LoggerElement _commandLogLoggerElement;
	private static int _errorLinkId;
	private static int _functionLinkId;
	private static String _htmlSource;
	private static LoggerElement _lineGroupLoggerElement;

}