Support retrieving chat administrators/owner in supergroups

telegram/utils.go

@@ -2732,11 +2732,14 @@ func (c *Client) GetChatMembers(chatID int64, limited bool, query string, member
 
 				return []*client.ChatMember{chatMember}, nil
 			}
+		} else if chatType == client.TypeChatTypeSupergroup {
+			// noop, use complex filtering strategy later
+		} else {
+			return nil, errors.New("Creator not found")
 		}
-
-		return nil, errors.New("Creator not found")
 	}
 
+	var administratorsRequest bool
 	var filters []client.ChatMembersFilter
 	switch membersList {
 	case MembersListMembers:
@@ -2747,7 +2750,8 @@ func (c *Client) GetChatMembers(chatID int64, limited bool, query string, member
 		filters = []client.ChatMembersFilter{&client.ChatMembersFilterBanned{}}
 	case MembersListBannedAndAdministrators:
 		filters = []client.ChatMembersFilter{&client.ChatMembersFilterBanned{}, &client.ChatMembersFilterAdministrators{}}
-	case MembersListAdministrators:
+	case MembersListAdministrators, MembersListCreators:
+		administratorsRequest = true
 		filters = []client.ChatMembersFilter{&client.ChatMembersFilterAdministrators{}}
 	}
 
@@ -2792,6 +2796,18 @@ func (c *Client) GetChatMembers(chatID int64, limited bool, query string, member
 		}
 	}
 
+	administrators := make(map[int64]*client.ChatAdministrator)
+	if administratorsRequest {
+		chatAdministrators, err := c.client.GetChatAdministrators(&client.GetChatAdministratorsRequest{
+			ChatId: chatID,
+		})
+		if err == nil {
+			for _, administrator := range chatAdministrators.Administrators {
+				administrators[administrator.UserId] = administrator
+			}
+		}
+	}
+
 	var members []*client.ChatMember
 	for _, filter := range filters {
 		chatMembers, err := c.client.SearchChatMembers(&client.SearchChatMembersRequest{
@@ -2803,7 +2819,17 @@ func (c *Client) GetChatMembers(chatID int64, limited bool, query string, member
 		if err != nil {
 			return nil, err
 		}
-		members = append(members, chatMembers.Members...)
+		for _, member := range chatMembers.Members {
+			switch membersList {
+			case MembersListAdministrators, MembersListCreators:
+				senderId := c.GetSenderId(member.MemberId)
+				administrator, ok := administrators[senderId]
+				if !ok || (administrator.IsOwner == (membersList == MembersListAdministrators)) {
+					continue
+				}
+			}
+			members = append(members, member)
+		}
 	}
 	return members, nil
 }