Allow posting media without text

issue #24

toot/commands.py

@@ -74,8 +74,15 @@ def post(app, user, args):
         media = _do_upload(app, user, args.media)
         media_ids = [media['id']]
     else:
+        media = None
         media_ids = None
 
+    if media and not args.text:
+        args.text = media['text_url']
+
+    if not args.text:
+        raise ConsoleError("You must specify either text or media to post.")
+
     response = api.post_status(app, user, args.text, args.visibility, media_ids)
 
     print_out("Toot posted: <green>{}</green>".format(response.get('url')))

toot/console.py

@@ -144,6 +144,7 @@ POST_COMMANDS = [
         arguments=[
             (["text"], {
                 "help": "The status text to post.",
+                "nargs": "?",
             }),
             (["-m", "--media"], {
                 "type": FileType('rb'),