First build

src/bot/features/isLCMGroup.ts

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+import { Composer } from "grammy";
+import type { Context } from "#root/bot/context.js";
+import { logHandle } from "#root/bot/helpers/logging.js";
+
+const composer = new Composer<Context>();
+
+const feature = composer.chatType(["group", "supergroup"]);
+
+const GROUP_IDS = process.env.GROUP_IDS
+  ? process.env.GROUP_IDS.split(",")
+  : undefined;
+
+feature.hears(
+  "/isLCMGroup",
+  logHandle("is-LCM-group"),
+  async (ctx: Context) => {
+    if (ctx.chat && ctx.msg) {
+      const groupID = ctx.chat.id;
+
+      if (GROUP_IDS !== undefined) {
+        const flag = GROUP_IDS.includes(`${groupID}`);
+
+        if (flag) {
+          await ctx.reply(
+            `This group is in the whitelisted and is a part of the LCM Telegram groups/communities\\. I should be deleting any Twitter/X links and reformatting services within this group\\.`,
+            {
+              parse_mode: "MarkdownV2",
+              reply_parameters: { message_id: ctx.msg.message_id }
+            }
+          );
+        }
+
+        if (!flag) {
+          await ctx.reply(
+            `This group is NOT in the whitelisted and is NOT a part of the LCM Telegram groups/communities\\. I am a bot designed to delete any Twitter/X links and reformatting services within groups\\. You can fork me from this link: https://github.com/LucidCreationsMedia/No-Twitter-Bot and deploy me for use in your own groups!`,
+            {
+              parse_mode: "MarkdownV2",
+              reply_parameters: { message_id: ctx.msg.message_id }
+            }
+          );
+        }
+      }
+
+      if (!GROUP_IDS) {
+        await ctx.reply(
+          `There was a problem retrieving the whitelist. Check the env variables and try again\\.`,
+          {
+            parse_mode: "MarkdownV2",
+            reply_parameters: { message_id: ctx.msg.message_id }
+          }
+        );
+      }
+    }
+  }
+);
+
+export { composer as isLCMGroup };