fix(util/index): fix arg type & fn calls

On one of my old commits, I chose the wrong type for
an arg function.

util/index.ts

@@ -4,7 +4,6 @@ import { IOrder } from "../models/order";
 import { UserDocument } from "../models/user";
 import { IFiatCurrencies, IFiat } from "./fiatModel";
 import { ILanguage, ILanguages } from "./languagesModel";
-import { Telegram } from "telegraf/typings/core/types/typegram";
 import axios from "axios";
 import fiatJson from './fiat.json';
 import languagesJson from './languages.json';
@@ -230,9 +229,9 @@ const secondsToTime = (secs: number) => {
   };
 };
 
-const isGroupAdmin = async (groupId: string, user: UserDocument, telegram: Telegram) => {
+const isGroupAdmin = async (groupId: string, user: UserDocument, telegram: MainContext['telegram']) => {
   try {
-    const member = await telegram.getChatMember({chat_id: groupId, user_id: Number(user.tg_id)});
+    const member = await telegram.getChatMember(groupId, Number(user.tg_id));
     if (
       member &&
       (member.status === 'creator' || member.status === 'administrator')
@@ -261,9 +260,11 @@ const isGroupAdmin = async (groupId: string, user: UserDocument, telegram: Teleg
   }
 };
 
-const deleteOrderFromChannel = async (order: IOrder, telegram: Telegram) => {
+const deleteOrderFromChannel = async (order: IOrder, telegram: MainContext['telegram']) => {
   try {
     let channel = process.env.CHANNEL;
+    if (channel === undefined) throw Error("CHANNEL not found, please check .env file")
+    if (order.tg_channel_message1 === undefined) throw Error("order.tg_channel_message1 was not found in DB")
     if (order.community_id) {
       const community = await Community.findOne({ _id: order.community_id });
       if (!community) {
@@ -279,7 +280,7 @@ const deleteOrderFromChannel = async (order: IOrder, telegram: Telegram) => {
         }
       }
     }
-    await telegram.deleteMessage({chat_id: channel!, message_id: Number(order.tg_channel_message1!)});
+    await telegram.deleteMessage(channel, Number(order.tg_channel_message1));
   } catch (error) {
     logger.error(error);
   }
@@ -381,7 +382,7 @@ const getDetailedOrder = (i18n: I18nContext, order: IOrder, buyer: UserDocument,
 };
 
 // We need to know if this user is a dispute solver for this community
-const isDisputeSolver = (community: ICommunity, user: UserDocument) => {
+const isDisputeSolver = (community: ICommunity | null, user: UserDocument) => {
   if (!community || !user) {
     return false;
   }