add --remove-server/-R cli arg

src/Database.py

@@ -21,6 +21,10 @@ class Servers(Table):
             realname])
         return self.database.execute_fetchone(
             "SELECT server_id FROM servers ORDER BY server_id DESC LIMIT 1")[0]
+    def by_alias(self, alias: str) -> typing.Optional[int]:
+        ids = self.database.execute_fetchone(
+            "SELECT server_id FROM servers WHERE alias=?", [alias])
+        return ids[0] if ids else None
     def get_all(self):
         return self.database.execute_fetchall(
             "SELECT server_id, alias FROM servers")
@@ -45,6 +49,8 @@ class Servers(Table):
             raise ValueError("Unknown column on servers table '%s'" % column)
         self.database.execute(
             "UPDATE servers SET %s=? WHERE server_id=?" % column, [value, id])
+    def delete(self, id: int):
+        self.database.execute("DELETE FROM servers WHERE server_id=?", [id])
 
 class Channels(Table):
     def add(self, server_id: int, name: str):

start.py

@@ -46,6 +46,9 @@ arg_parser.add_argument("--module-args", "-M",
 arg_parser.add_argument("--startup-disconnects", "-D",
     help="Tolerate failed connections on startup", action="store_true")
 
+arg_parser.add_argument("--remove-server", "-R",
+    help="Remove a server by it's alias")
+
 args = arg_parser.parse_args()
 
 if args.version:
@@ -63,6 +66,16 @@ log.info("Starting BitBot %s (Python v%s)",
 
 database = Database.Database(log, args.database)
 
+if args.remove_server:
+    alias = args.remove_server
+    id = database.servers.by_alias(alias)
+    if not id == None:
+        database.servers.delete(id)
+        print("Deleted server '%s'" % alias)
+    else:
+        sys.stderr.write("Unknown server '%s'\n" % alias)
+    sys.exit(0)
+
 if args.add_server:
     print("Adding a new server")
     utils.cli.add_server(database)