Added documentation. Protected the command from general use.

src/bot/features/getGroupIDCommand.ts

@@ -6,23 +6,45 @@ const composer = new Composer<Context>();
 
 const feature = composer.chatType(["group", "supergroup"]);
 
+/**
+ * What triggers this feature and adds to the log when it has been triggered.
+ * The trigger is the command "/botInfo"
+ */
 feature.hears(
   "/getGroupID",
   logHandle("get-group-id"),
   async (ctx: Context) => {
+    // Pulling the group IDs from the env variables.
     const GROUP_IDS = process.env.GROUP_IDS
       ? process.env.GROUP_IDS.split(",")
       : undefined;
 
-    if (ctx.chat && ctx.msg) {
+    // Checks if the context has a chat, msg, and from property.
+    if (ctx.chat && ctx.msg && ctx.msg.from) {
       if (GROUP_IDS !== undefined) {
         const groupID = ctx.chat.id;
         const flag = GROUP_IDS.includes(`${groupID}`);
+
+        // Checks if the group is whitelisted
         if (flag) {
-          await ctx.reply(`The group id is: \`${groupID}\``, {
-            parse_mode: "MarkdownV2",
-            reply_parameters: { message_id: ctx.msg.message_id }
-          });
+          const chatMember = await ctx.getChatMember(ctx.msg.from.id);
+
+          // Checks if the user is an admin
+          if (["creator", "administrator"].includes(chatMember.status)) {
+            return await ctx.reply(`The group id is: \`${groupID}\``, {
+              parse_mode: "MarkdownV2",
+              reply_parameters: { message_id: ctx.msg.message_id }
+            });
+          }
+
+          // Send a default message if the user is not an admin
+          return await ctx.reply(
+            `You have to be an admin to use this command\\!`,
+            {
+              parse_mode: "MarkdownV2",
+              reply_parameters: { message_id: ctx.msg.message_id }
+            }
+          );
         }
       }
     }