/*
+----------------------------------------------------------------------+
|                    Class: CLauncher                                  |
|                                                                      |
| Developper:  Eric Gavaldo (eric.gavaldo@xqual.com)                   |
| Version:     1.4                                                     |
+----------------------------------------------------------------------+
*/
package com.xqual.xlauncher.nunit;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Vector;

import com.xqual.xagent.launcher.CExecutionStep;
import com.xqual.xagent.launcher.CLauncher;
import com.xqual.xagent.launcher.CParamParsingException;
import com.xqual.xagent.launcher.CReturnStatus;
import com.xqual.xagent.launcher.runner.CRunner;
import com.xqual.xagent.launcher.runner.IRunner;
import com.xqual.xcommon.CAttribute;
import com.xqual.xcommon.IConstantsResults;
import com.xqual.xcommon.utils.CFileUtils;
import com.xqual.xcommon.utils.CUtils;

/**
 * The <code>CLauncherImpl</code> implementation of <code>ILauncher</code> for NUnit.
 * @author egavaldo
 */
public class CLauncherImpl extends CLauncher implements IConstantsResults {

	// +==============================================================+
	// | Attributes                                                   |
	// +==============================================================+

	static final String TRACE_HEADER = "{nunit         }  ";

	// parameters impacting executing at run time set by the test operator
	private String testRootPath;
	private String dotNetVersion;
	private String assemblyName;
	private String nunitConsolePath;

	private String nunitInterpreter;

	private File workingDir;

	private static final String NUNIT_CONSOLE_RUNNER = CUtils.getExecutableName("nunit-console");

	// +==============================================================+
	// | Constructors                                                 |
	// +==============================================================+

	public CLauncherImpl() {
		super(TRACE_HEADER);
	}

	// +==============================================================+
	// | Methods                                                      |
	// +==============================================================+

	@Override
	public CReturnStatus initialize(int sutId, String sutName, String sutVersion) {
		setSutDetails(sutId, sutName, sutVersion);

		setDefaultTestcaseMustBeCreated(true); // if there is not testcase, let the systems create a default one

		// check the configuration sent by the manager
		printConfiguration();

		Vector<CExecutionStep> executionSteps = new Vector<CExecutionStep>();
		try {
			// retrieve the parameters we need

			// section related to the SUT, independant from NUnit
			testRootPath      = getStringParamValue("General", "Test root path");     // i.e. C:/Program Files/NUnit 2.5.2/bin/net-2.0/tests
			assemblyName      = getStringParamValue("General", "Assembly dll");       // i.e. nutil.util.tests.dll

			// section related to NUnit
			dotNetVersion     = getStringParamValue("NUnit", ".NET version");         // i.e. 2.0
			nunitConsolePath  = getStringParamValue("NUnit", "NUnit console path");   // i.e. C:/Program Files/NUnit 2.5.2

			nunitInterpreter = nunitConsolePath + "/bin/net-" + dotNetVersion + "/" + NUNIT_CONSOLE_RUNNER;
		} catch (CParamParsingException e) {
			traceln(LOG_PRIORITY_SEVERE, "parsing error during initialization");
			executionSteps.add(new CExecutionStep(RESULT_FAILURE, "Exception during initialize: " + e.getMessage()));
			return new CReturnStatus(RESULT_FAILURE, executionSteps);
		}
		return new CReturnStatus(RESULT_SUCCESS, executionSteps);
	}

	@Override
	public CReturnStatus preRun(int testId, String testPath, String testName, Vector<CAttribute> attributes, String additionalInfo) {
		traceln(LOG_PRIORITY_INFO, "preRun testId=" + testId + " testPath=" + testPath + " [" + testName + "]...");
		Vector<CExecutionStep> executionSteps = new Vector<CExecutionStep>();
		return new CReturnStatus(RESULT_SUCCESS, executionSteps);
	}

	@Override
	public CReturnStatus run(int testId, String testPath, String testName, int testcaseIndex, String testcaseName, String additionalInfo) {
		traceln(LOG_PRIORITY_INFO, "run testId=" + testId + " testPath=" + testRootPath + "/" + testPath + "/" + testName + " testcaseIndex=" + testcaseIndex + "...");
		Vector<CExecutionStep> executionSteps = new Vector<CExecutionStep>();

		workingDir = new File(testRootPath);

		// +------------------------------------+
		// | Interpret the script
		// +------------------------------------+
		File nUnitTraceFile = new File("nunit_traces.txt");
		if (nUnitTraceFile.exists())
			nUnitTraceFile.delete();
		try {
			nUnitTraceFile.createNewFile();
		} catch (IOException e) {
			traceln(LOG_PRIORITY_SEVERE, "Could not create file \"nunit_traces.txt\"...");
		}

		// +------------------------------------+
		// | Run the NUnit test class
		// +------------------------------------+
		// "C:/Program Files/NUnit 2.5.2/bin/net-2.0/nunit-console.exe" /run:NUnit.Util.Tests.TestAgencyTests "C:/Program Files/NUnit 2.5.2/bin/net-2.0/tests/nunit.util.tests.dll"
		//  <------------------- nunitInterpreter -------------------->      <-- testPath --> <-- testName -> <------------------ testRootPath -------------> <-- assemblyName -->
		// TODO: use the xml report instead of parsing the console
		CRunner junitRunner = new CRunner("[" + testId + "] "+ testPath + "." + testName,
		                                   CFileUtils.quoteFilePath(nunitInterpreter) + " " + "/run:" + testPath + "." + testName + " " +
		                                   CFileUtils.quoteFilePath(testRootPath + "/" + assemblyName),
										   workingDir);
		// here we redirect the output to a file for later parsing
		short result = junitRunner.requestAction(IRunner.START_PROCESS, IRunner.WAIT_END_OF_EXECUTION, nUnitTraceFile);

		// +------------------------------------+
		// | Add the output console to the test
		// +------------------------------------+
		addAttachment(nUnitTraceFile);

		if (result == RESULT_FAILURE) {
			executionSteps.add(new CExecutionStep(RESULT_FAILURE, "execution process failed"));
			parseResultFile(executionSteps); // to have the details anyway
			return new CReturnStatus(RESULT_FAILURE, executionSteps);
		} else {
			executionSteps.add(new CExecutionStep(RESULT_SUCCESS, "execution process succeeded"));
			return parseResultFile(executionSteps);
		}
	}

	@Override
	public CReturnStatus postRun(int testId, String testPath, String testName) {
		traceln(LOG_PRIORITY_INFO, "postRun testId=" + testId + " testPath=" + testPath + ":" + testName + "...");
		Vector<CExecutionStep> executionSteps = new Vector<CExecutionStep>();
		executionSteps.add(new CExecutionStep(RESULT_SUCCESS, "postRun: succeeded"));
		return new CReturnStatus(RESULT_SUCCESS, executionSteps);
	}

	@Override
	public CReturnStatus terminate() {
		Vector<CExecutionStep> executionSteps = new Vector<CExecutionStep>();
		executionSteps.add(new CExecutionStep(RESULT_SUCCESS, "Terminate"));
		return new CReturnStatus(RESULT_SUCCESS, executionSteps);
	}

	// +--------------------------+
	// ¦        Utilities         ¦
	// +--------------------------+

	private CReturnStatus parseResultFile(Vector<CExecutionStep> executionSteps) {
		// parse the result file to get the result and the execution steps
		File resultFile = new File("nunit_traces.txt");
		if (!resultFile.exists()) {
			traceln(LOG_PRIORITY_SEVERE, "Result file not found!");
			executionSteps.add(new CExecutionStep(RESULT_FAILURE, "run: result file not found!"));
			return new CReturnStatus(RESULT_FAILURE, executionSteps);
		} else {
			executionSteps.add(new CExecutionStep(RESULT_SUCCESS, "run: result file found"));
		}

		String line;
		boolean errorDetected = false;
		boolean notRunDetected = false;

		try {
			FileInputStream fileInputStream = new FileInputStream(resultFile);
			BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(fileInputStream));

			while ((line = bufferedReader.readLine()) != null) {
				line = line.trim();
				System.out.println(">" + line);
				if (line.startsWith("Tests run:")) {
					String[] array = line.split(",");

					int errorCount = getCountFromBuffer(array[1]);
					int failureCount = getCountFromBuffer(array[2]);
					int inconclusiveCount = getCountFromBuffer(array[3]);

					executionSteps.add(new CExecutionStep(errorCount > 0 ? RESULT_FAILURE: RESULT_SUCCESS, "errorCount: " + errorCount));
					executionSteps.add(new CExecutionStep(failureCount > 0 ? RESULT_FAILURE: RESULT_SUCCESS, "failureCount: " + failureCount));
					executionSteps.add(new CExecutionStep(RESULT_UNKNOWN, "inconclusiveCount: " + inconclusiveCount));

					if (errorCount+failureCount+inconclusiveCount > 0) {
						executionSteps.add(new CExecutionStep(RESULT_FAILURE, line));
						errorDetected = true;
					} else {
						executionSteps.add(new CExecutionStep(RESULT_SUCCESS, line));
					}

				} else if (line.startsWith("  Not run:")) {
					String[] array = line.split(",");
					int notRunCount = getCountFromBuffer(array[0]);

					executionSteps.add(new CExecutionStep(RESULT_UNKNOWN, "notRunCount: " + notRunCount));

					if (notRunCount > 0) {
						executionSteps.add(new CExecutionStep(RESULT_UNKNOWN, line));
						notRunDetected = true;
					} else {
						executionSteps.add(new CExecutionStep(RESULT_SUCCESS, line));
					}

				} else {
					//traceln(LOG_PRIORITY_SEVERE, "unknown tag!");
				}
			}

		} catch (Exception e) {
			traceln(LOG_PRIORITY_SEVERE, "exception whle parsing the result file: " + e);
			executionSteps.add(new CExecutionStep(RESULT_FAILURE, "Exception while parsing the result file: " + e));
			errorDetected = true;
		}

		if (errorDetected) {
			return new CReturnStatus(RESULT_FAILURE, executionSteps);
		} else if (notRunDetected) {
			return new CReturnStatus(RESULT_UNKNOWN, executionSteps);
		} else{
			return new CReturnStatus(RESULT_SUCCESS, executionSteps);
		}
	}

	private int getCountFromBuffer(String input) {
		String[] array = input.split(":");
		return Integer.parseInt(array[1].trim());
	}

}