Issue #KN-231 test: Used the tika to detect the mimetype from filename.

platform-modules/mimetype-manager/src/main/scala/org/sunbird/cloudstore/StorageService.scala

 package org.sunbird.cloudstore
 
-import java.io.File
 import org.apache.commons.lang3.StringUtils
+import org.apache.tika.Tika
 import org.sunbird.cloud.storage.BaseStorageService
-import org.sunbird.common.Platform
-import org.sunbird.cloud.storage.factory.StorageConfig
-import org.sunbird.cloud.storage.factory.StorageServiceFactory
+import org.sunbird.cloud.storage.factory.{StorageConfig, StorageServiceFactory}
+import org.sunbird.common.{Platform, Slug}
 import org.sunbird.common.exception.ServerException
-import org.sunbird.common.Slug
 
-import java.net.URLConnection
-import java.util
+import java.io.File
 import scala.concurrent.{ExecutionContext, Future}
 
 class StorageService {
@@ -104,66 +101,9 @@ class StorageService {
         }
     }
 
-  def getMimeType(fileName: String): String = { // 1. first use java's built-in utils
-    val mimeTypes = URLConnection.getFileNameMap
-    var contentType = mimeTypes.getContentTypeFor(fileName)
-    // 2. nothing found -> lookup our in extension map to find types like ".doc" or ".docx"
-    if (contentType == null) {
-      val extension = fileName.substring(fileName.lastIndexOf('.') + 1, fileName.length)
-      contentType = fileExtensionMap.getOrDefault(extension, "application/octet-stream")
-    }
-    contentType
+  def getMimeType(fileName: String): String = {
+    val tika: Tika = new Tika()
+    tika.detect(fileName)
   }
 
-  private val fileExtensionMap: util.Map[String, String] = new java.util.HashMap().asInstanceOf[java.util.Map[String, String]]
-
-  // MS Office
-  fileExtensionMap.put("doc", "application/msword")
-  fileExtensionMap.put("dot", "application/msword")
-  fileExtensionMap.put("docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document")
-  fileExtensionMap.put("dotx", "application/vnd.openxmlformats-officedocument.wordprocessingml.template")
-  fileExtensionMap.put("docm", "application/vnd.ms-word.document.macroEnabled.12")
-  fileExtensionMap.put("dotm", "application/vnd.ms-word.template.macroEnabled.12")
-  fileExtensionMap.put("xls", "application/vnd.ms-excel")
-  fileExtensionMap.put("xlt", "application/vnd.ms-excel")
-  fileExtensionMap.put("xla", "application/vnd.ms-excel")
-  fileExtensionMap.put("xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
-  fileExtensionMap.put("xltx", "application/vnd.openxmlformats-officedocument.spreadsheetml.template")
-  fileExtensionMap.put("xlsm", "application/vnd.ms-excel.sheet.macroEnabled.12")
-  fileExtensionMap.put("xltm", "application/vnd.ms-excel.template.macroEnabled.12")
-  fileExtensionMap.put("xlam", "application/vnd.ms-excel.addin.macroEnabled.12")
-  fileExtensionMap.put("xlsb", "application/vnd.ms-excel.sheet.binary.macroEnabled.12")
-  fileExtensionMap.put("ppt", "application/vnd.ms-powerpoint")
-  fileExtensionMap.put("pot", "application/vnd.ms-powerpoint")
-  fileExtensionMap.put("pps", "application/vnd.ms-powerpoint")
-  fileExtensionMap.put("ppa", "application/vnd.ms-powerpoint")
-  fileExtensionMap.put("pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation")
-  fileExtensionMap.put("potx", "application/vnd.openxmlformats-officedocument.presentationml.template")
-  fileExtensionMap.put("ppsx", "application/vnd.openxmlformats-officedocument.presentationml.slideshow")
-  fileExtensionMap.put("ppam", "application/vnd.ms-powerpoint.addin.macroEnabled.12")
-  fileExtensionMap.put("pptm", "application/vnd.ms-powerpoint.presentation.macroEnabled.12")
-  fileExtensionMap.put("potm", "application/vnd.ms-powerpoint.presentation.macroEnabled.12")
-  fileExtensionMap.put("ppsm", "application/vnd.ms-powerpoint.slideshow.macroEnabled.12")
-  // Open Office
-  fileExtensionMap.put("odt", "application/vnd.oasis.opendocument.text")
-  fileExtensionMap.put("ott", "application/vnd.oasis.opendocument.text-template")
-  fileExtensionMap.put("oth", "application/vnd.oasis.opendocument.text-web")
-  fileExtensionMap.put("odm", "application/vnd.oasis.opendocument.text-master")
-  fileExtensionMap.put("odg", "application/vnd.oasis.opendocument.graphics")
-  fileExtensionMap.put("otg", "application/vnd.oasis.opendocument.graphics-template")
-  fileExtensionMap.put("odp", "application/vnd.oasis.opendocument.presentation")
-  fileExtensionMap.put("otp", "application/vnd.oasis.opendocument.presentation-template")
-  fileExtensionMap.put("ods", "application/vnd.oasis.opendocument.spreadsheet")
-  fileExtensionMap.put("ots", "application/vnd.oasis.opendocument.spreadsheet-template")
-  fileExtensionMap.put("odc", "application/vnd.oasis.opendocument.chart")
-  fileExtensionMap.put("odf", "application/vnd.oasis.opendocument.formula")
-  fileExtensionMap.put("odb", "application/vnd.oasis.opendocument.database")
-  fileExtensionMap.put("odi", "application/vnd.oasis.opendocument.image")
-  fileExtensionMap.put("oxt", "application/vnd.openofficeorg.extension")
-  // Other
-  fileExtensionMap.put("rtf", "application/rtf")
-  fileExtensionMap.put("pdf", "application/pdf")
-  fileExtensionMap.put("h5p", "application/octet-stream")
-  fileExtensionMap.put("csv", "text/csv")
-  fileExtensionMap.put("epub", "application/epub+zip")
 }