Prevent ClassCastException in the BasicFileReporter (#123)

* prevent ClassCastException in the BasicFileReporter

* fix a small bug in the enforceOfflineMode method

Author: datagitlies

src/main/java/com/aventstack/extentreports/reporter/BasicFileReporter.java

@@ -167,8 +167,8 @@ protected Configuration getFreemarkerConfig() {
 
 	protected Boolean enforceOfflineMode() {
 		if (getConfigurationStore().containsConfig("enableOfflineMode")) {
-			String offlineMode = String.valueOf(getConfigurationStore().containsConfig("enableOfflineMode"));
-			if (!getConfigurationStore().containsConfig("offlineDirectory") && offlineMode.equals("true")) {
+			String offlineMode = String.valueOf(getConfigurationStore().getConfig("enableOfflineMode"));
+			if (!getConfigurationStore().containsConfig("offlineDirectory") && Boolean.parseBoolean(offlineMode)) {
 				return true;
 			}
 		}

src/main/java/com/aventstack/extentreports/reporter/configuration/ExtentHtmlReporterConfiguration.java

@@ -5,8 +5,8 @@
 
 import com.aventstack.extentreports.ExtentReports;
 import com.aventstack.extentreports.offline.OfflineResxDelegate;
+import com.aventstack.extentreports.reporter.BasicFileReporter;
 import com.aventstack.extentreports.reporter.ExtentHtmlReporter;
-import com.aventstack.extentreports.reporter.ExtentSparkReporter;
 import com.aventstack.extentreports.utils.FileUtil;
 
 /**
@@ -28,7 +28,7 @@ public void enableOfflineMode(Boolean offline) {
 		getConfigurationStore().storeConfig("enableOfflineMode", String.valueOf(offline));
 		getConfigurationStore().storeConfig("offlineDirectory", getReporter().getReporterName() + "/");
 		if (offline) {
-			File f = getTargetDirectory(((ExtentSparkReporter) getReporter()).getFileFile());
+			File f = getTargetDirectory(((BasicFileReporter) getReporter()).getFileFile());
 			String s = "/";
 			String resourcePackagePath = ExtentReports.class.getPackage().getName().replace(".", s);
 			resourcePackagePath += s + "offline" + s;