Messaging: Add functions to clear temp files, get sender/receiver addresses, always convert msg to eml

Modules.Messaging/Email2.vb

@@ -14,6 +14,7 @@ Public Class Email2
     Private ReadOnly LogConfig As LogConfig
     Private ReadOnly FileEx As Filesystem.File
     Private ReadOnly MailBuilder As New MailBuilder()
+    Private ReadOnly TempFiles As New List(Of String)
 
     Private DisableExcessiveLogging As Boolean = False
 
@@ -271,6 +272,16 @@ Public Class Email2
         End Try
     End Function
 
+    ''' <summary>
+    ''' Loads an eml file from disk and returns the IMail representation of it
+    ''' </summary>
+    ''' <param name="pFileName">Path to the eml file</param>
+    ''' <returns>The IMail object</returns>
+    Public Function Load_Email(pFileName As String) As IMail
+        Dim oFileName As String = MaybeConvert_MsgToEml(pFileName)
+        Return MailBuilder.CreateFromEmlFile(oFileName)
+    End Function
+
     ''' <summary>
     ''' Removes all attachments from an EML file and saves it to a temporary file.
     ''' </summary>
@@ -282,7 +293,8 @@ Public Class Email2
             Dim oTempPath As String = Path.Combine(Path.GetTempPath(), Add_FilenameSuffix(pFileName, pSuffix))
             Dim oCleanedPath As String = FileEx.GetCleanFilename(oTempPath)
             Dim oVersionedPath As String = FileEx.GetVersionedFilename(oCleanedPath)
-            Dim oMail = MailBuilder.CreateFromEmlFile(pFileName)
+            Dim oEmlPath As String = MaybeConvert_MsgToEml(pFileName)
+            Dim oMail = MailBuilder.CreateFromEmlFile(oEmlPath)
 
             oMail.RemoveAttachments()
             oMail.Save(oVersionedPath)
@@ -295,14 +307,11 @@ Public Class Email2
         End Try
     End Function
 
-    Public Function Load_Email(pFileName As String) As IMail
-        Return MailBuilder.CreateFromEmlFile(pFileName)
-    End Function
-
     Public Function Save_AttachmentsToDisk(pFileName As String) As List(Of String)
         Try
             Dim oAttachmentPaths As New List(Of String)
-            Dim oMail = MailBuilder.CreateFromEmlFile(pFileName)
+            Dim oEmlFile As String = MaybeConvert_MsgToEml(pFileName)
+            Dim oMail = MailBuilder.CreateFromEmlFile(oEmlFile)
             Dim oTempPath As String = IO.Path.GetTempPath()
 
             If oMail.Attachments.Count = 0 Then
@@ -315,6 +324,7 @@ Public Class Email2
 
                 oAttachment.Save(oVersionedPath)
                 oAttachmentPaths.Add(oVersionedPath)
+                TempFiles.Add(oVersionedPath)
             Next
 
             Return oAttachmentPaths
@@ -325,7 +335,63 @@ Public Class Email2
         End Try
     End Function
 
-    Public Function Convert_MsgToEml(pEmailFileName As String) As String
+    Public Sub Clear_TempFiles()
+        Logger.Info("Cleaning [{0}] email temp files", TempFiles.Count)
+        For Each oFile In TempFiles
+            Try
+                IO.File.Delete(oFile)
+            Catch ex As Exception
+                Logger.Warn("Could not clean temp file [{0}]", oFile)
+                Logger.Error(ex)
+            End Try
+        Next
+    End Sub
+
+    Public Function Get_MessageSender(Mail As IMail) As String
+        Try
+            Dim oAddress = Mail.From.First()
+
+            If oAddress Is Nothing Then
+                Logger.Warn("Could not get MessageSender from Mail [{0}]", Mail.MessageID)
+                Return Nothing
+            End If
+
+            Return oAddress.Address
+
+        Catch ex As Exception
+            Logger.Warn("Could not get MessageSender from Mail [{0}]", Mail.MessageID)
+            Logger.Error(ex)
+            Return Nothing
+
+        End Try
+    End Function
+
+    Public Function Get_MessageReceiver(Mail As IMail) As String
+        Try
+            Dim oAddress = Mail.To.FirstOrDefault()
+
+            If oAddress Is Nothing Then
+                Logger.Warn("Could not get MessageReceiver from Mail [{0}]", Mail.MessageID)
+                Return Nothing
+            End If
+
+            Dim oMailBox = oAddress.GetMailboxes().First()
+
+            If oMailBox Is Nothing Then
+                Logger.Warn("Could not get MessageReceiver from Mail [{0}]", Mail.MessageID)
+                Return Nothing
+            End If
+
+            Return oMailBox.Address
+
+        Catch ex As Exception
+            Logger.Error(ex)
+            Return Nothing
+
+        End Try
+    End Function
+
+    Private Function MaybeConvert_MsgToEml(pEmailFileName As String) As String
         Dim oInfo As New FileInfo(pEmailFileName)
 
         If oInfo.Extension.ToUpper = ".EML" Then
@@ -356,6 +422,7 @@ Public Class Email2
 
             End Using
 
+            TempFiles.Add(oVersionedPath)
             Return oVersionedPath
 
         Catch ex As Exception
@@ -374,4 +441,8 @@ Public Class Email2
         Return $"{oFileNameWithoutExtension}{pSuffix}{oExtension}"
 
     End Function
+
+
+
+
 End Class