Export specific type(user, group, channel)

config.ini.example

@@ -59,6 +59,11 @@ Whitelist = @example, username, -1001132836449
 ; MediaWhitelist = chatphoto, photo, sticker
 MediaWhitelist = chatphoto, photo, sticker
 
+# dialog type to download. Options are:
+# "user", "group", "channel".
+# An empty list (default if omitted) means all are allowed.
+DialogWhitelist = user, group, channel
+
 # The maximum allowed file size for a document before skipping it.
 # For instance, "800KB" will only download files smaller or equal to 800KB.
 # Allowed units are "B", "KB", "MB" and "GB" (decimal point allowed).

telegram_export/__main__.py

@@ -59,6 +59,7 @@ def load_config(filename):
         'SessionName': 'exporter',
         'OutputDirectory': '.',
         'MediaWhitelist': 'chatphoto, photo, sticker',
+        'DialogWhitelist': 'user, group, channel',
         'MaxSize': '1MB',
         'LogLevel': 'INFO',
         'DBFileName': 'export',

telegram_export/exporter.py

@@ -81,8 +81,20 @@ async def start(self):
                 await self.downloader.start(entity)
         else:
             # Neither blacklist nor whitelist - get all
+            dialog_to_dump = (self.dumper.config.get('DialogWhitelist') or '').replace(' ' ,'').split(',')
             for dialog in await self.client.get_dialogs(limit=None):
-                await self.downloader.start(dialog.entity)
+                if dialog.is_user:
+                    dialogType = 'user'
+                elif dialog.is_group:
+                    dialogType = 'group'
+                elif dialog.is_channel:
+                    dialogType = 'channel'
+                else:
+                    dialogType = 'unknown!'
+                if dialogType in dialog_to_dump:
+                    await self.downloader.start(dialog.entity)
+                else:
+                    continue
 
     async def download_past_media(self):
         """