Windows: Add extensive logging for FileDrop

Windows/FileDrop.vb

@@ -54,7 +54,11 @@ Partial Public Class FileDrop
     End Function
 
     Public Function GetFileFormat(pEvent As DragEventArgs) As FileFormat
+        Logger.Debug("Determining FileFormat")
+
         If IsThunderbird(pEvent) Then
+            Logger.Debug("File is a Thunderbird File")
+
             If IsThunderbirdAttachment(pEvent) Then
                 Return FileFormat.ThunderbirdAttachment
 
@@ -67,6 +71,8 @@ Partial Public Class FileDrop
         End If
 
         If IsOutlook(pEvent) Then
+            Logger.Debug("File is an Outlook File")
+
             If IsOutlookAttachment(pEvent) Then
                 Return FileFormat.OutlookAttachment
 
@@ -79,6 +85,8 @@ Partial Public Class FileDrop
         End If
 
         If IsNormalFile(pEvent) Then
+            Logger.Debug("File is a normal File")
+
             Return FileFormat.LocalFile
 
         Else
@@ -88,7 +96,13 @@ Partial Public Class FileDrop
 
     Public Function GetFiles(pEvent As DragEventArgs) As List(Of DroppedFile)
         Try
+            Dim oFormats As List(Of String) = GetFileFormats(pEvent)
+            Dim oFormatString = String.Join(", ", oFormats)
+            Logger.Debug("Available Formats: [{0}]", oFormatString)
+
             Dim oFormat = GetFileFormat(pEvent)
+            Logger.Debug("Format: [{0}]", oFormat.ToString)
+
             Dim oFiles As New List(Of DroppedFile)
 
             Select Case oFormat
@@ -115,9 +129,12 @@ Partial Public Class FileDrop
 
             End Select
 
+            Logger.Debug("Handled [{0}] dropped files.", oFiles.Count)
+
             Return oFiles
 
         Catch ex As Exception
+            Logger.Warn("Error while handling dropped files.")
             Logger.Error(ex)
             Return Nothing
 
@@ -165,10 +182,15 @@ Partial Public Class FileDrop
             End While
         End Using
 
-        Return oBuilder.ToString
+        Dim oFileName As String = oBuilder.ToString
+        Logger.Debug("Outlook filename is [{0}]", oFileName)
+
+        Return oFileName
     End Function
 
     Private Function GetOutlookFileContents_FromDragEvent(pEvent As DragEventArgs) As List(Of Byte())
+        Logger.Debug("Getting file contents")
+
         Using oStream As IO.MemoryStream = pEvent.Data.GetData("FileContents", True)
             If oStream Is Nothing Then
                 Return Nothing
@@ -185,6 +207,9 @@ Partial Public Class FileDrop
     End Function
 
     Private Function GetOutlookFileContents_FromInterop(pEvent As DragEventArgs) As List(Of Byte())
+        Logger.Debug("Getting file contents")
+        Logger.Debug("Creating Outlook Application")
+
         Dim oApp As Outlook.Application
         Try
             oApp = New Outlook.Application()
@@ -197,6 +222,8 @@ Partial Public Class FileDrop
         Dim oMailItem As Outlook.MailItem
         For oIndex As Integer = 1 To oApp.ActiveExplorer.Selection.Count
             Try
+                Logger.Debug("Fetching mail [{0}]")
+
                 oMailItem = oApp.ActiveExplorer.Selection.Item(oIndex)
 
                 Dim oSubject As String = ConvertTextToSlug(oMailItem.Subject)
@@ -229,8 +256,11 @@ Partial Public Class FileDrop
                 Return oResults
             Catch ex As Exception
                 Logger.Error(ex)
+
             End Try
         Next
+
+        Return Nothing
     End Function
 
     Public Function GetFormat(pEvent As DragEventArgs, pFormat As String, pAutoConvert As Boolean) As Object