sipmlify plugins and tests and remove superflous core event

python/examples/group_tracking.py

@@ -1,8 +1,6 @@
 
 # content of group_tracking.py
 
-import sys
-import optparse
 import deltachat
 
 
@@ -25,40 +23,9 @@ class GroupTrackingPlugin:
         print("*** member_removed", contact.addr, "from", chat)
 
 
-def main(argv):
-    p = optparse.OptionParser("simple-echo")
-    p.add_option("-l", action="store_true", help="show ffi")
-    p.add_option("--db", type="str", help="database file")
-    p.add_option("--email", type="str", help="email address")
-    p.add_option("--password", type="str", help="password")
-
-    opts, posargs = p.parse_args(argv)
-
-    assert opts.db, "you must specify --db"
-    ac = deltachat.Account(opts.db)
-
-    if opts.l:
-        log = deltachat.eventlogger.FFIEventLogger(ac, "group-tracking")
-        ac.add_account_plugin(log)
-
-    if not ac.is_configured():
-        assert opts.email and opts.password, (
-            "you must specify --email and --password"
-        )
-        ac.set_config("addr", opts.email)
-        ac.set_config("mail_pw", opts.password)
-        ac.set_config("mvbox_watch", "0")
-        ac.set_config("sentbox_watch", "0")
-
-    ac.add_account_plugin(GroupTrackingPlugin())
-
-    # start IO threads and configure if neccessary
-    ac.start()
-
-    print("{}: waiting for message".format(ac.get_config("addr")))
-
-    ac.wait_shutdown()
+def main(argv=None):
+    deltachat.run_cmdline(argv=argv, account_plugins=[GroupTrackingPlugin()])
 
 
 if __name__ == "__main__":
-    main(sys.argv)
+    main()