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/*
 * Testerra
 *
 * (C) 2020, Peter Lehmann, T-Systems Multimedia Solutions GmbH, Deutsche Telekom AG
 *
 * Deutsche Telekom AG and all other contributors /
 * copyright owners license this file to you under the Apache
 * License, Version 2.0 (the "License"); you may not use this
 * file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */
 package eu.tsystems.mms.tic.testframework.internal;

import eu.tsystems.mms.tic.testframework.report.perf.PerfTestContainer;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebDriverException;
import org.testng.ITestResult;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public final class StopWatch {

    private StopWatch() {

    }
    private static final ThreadLocal> START_PAGE_LOAD_TIMESTAMP = new ThreadLocal>();
    private static final ThreadLocal> PAGE_LOAD_INFOS = new ThreadLocal>();

    /**
     * starts to load page
     *
     * @param reference .
     */
    public static void startPageLoad(Object reference) {
        long currentTimeMillis = System.currentTimeMillis();
        if (START_PAGE_LOAD_TIMESTAMP.get() == null) {
            START_PAGE_LOAD_TIMESTAMP.set(new HashMap());
        }
        START_PAGE_LOAD_TIMESTAMP.get().put(reference, currentTimeMillis);
    }

    /**
     * initializes the ThreadLocal List for saving LoadTimes
     */
    public static void initializeStopWatch() {
        PAGE_LOAD_INFOS.set(new ArrayList());
    }

    /**
     *   @param driver .
     * @param page .
     */
    public static void stopPageLoad(WebDriver driver, Class page) {
        String currentUrl;
        try {
            currentUrl = driver.getCurrentUrl();
        } catch (WebDriverException e) {
            currentUrl = "Url unknown: " + e.getMessage();
        }

        // endTime of measurement
        long timeStampMillis = System.currentTimeMillis();

        HashMap hashMap = START_PAGE_LOAD_TIMESTAMP.get();
        if (hashMap == null) {
            return;
        }

        if (!hashMap.containsKey(driver)) {
            return;
        }

        Long startTimestamp = hashMap.get(driver);
        long durationMillis = timeStampMillis - startTimestamp;
        String context = page.getSimpleName();
        TimingInfo timingInfo = new TimingInfo(context, currentUrl, durationMillis, timeStampMillis);

        // store
        if (PAGE_LOAD_INFOS.get() == null) {
            PAGE_LOAD_INFOS.set(new ArrayList<>());
        }
        List timingInfoList = PAGE_LOAD_INFOS.get();
        timingInfoList.add(timingInfo);

        // cleanup
        START_PAGE_LOAD_TIMESTAMP.get().remove(driver);
    }

    public static List getPageLoadInfos() {
        return PAGE_LOAD_INFOS.get();
    }

    /**
     * cleans all local threads
     */
    public static void cleanupThreadLocals() {
        START_PAGE_LOAD_TIMESTAMP.remove();
        PAGE_LOAD_INFOS.remove();
    }

    /**
     * loads infos of store page after test method
     *
     * @param iTestResult .
     */
    public static void storePageLoadInfosAfterTestMethod(ITestResult iTestResult) {
        if (PAGE_LOAD_INFOS.get() == null) {
            return;
        }
        List timingInfosCopy = new ArrayList(PAGE_LOAD_INFOS.get().size());
        timingInfosCopy.addAll(PAGE_LOAD_INFOS.get());


        String threadName = Thread.currentThread().getName();
        Long threadID = Thread.currentThread().getId();

        PerfTestContainer.saveThreadName(threadID, threadName);
        String methodName = iTestResult.getMethod().getMethodName();
        PerfTestContainer.addPageLoadInfo(threadID, timingInfosCopy, methodName);

        //save testResult
        PerfTestContainer.setTestResult(threadID, iTestResult);

        PAGE_LOAD_INFOS.get().clear();
        PAGE_LOAD_INFOS.remove();
    }
}