KOW-3 Fix TMA validation (#58)

src/commands/modarchive.ts

@@ -61,23 +61,27 @@ export default (bot: Telegraf<Context>) => {
         ...({ reply_to_message_id })
       });
     }
-
+    const numberRegex = /^\d+$/;
+    const isNumber = numberRegex.test(moduleId);
+    if (isNumber) {
       const result = await downloadModule(moduleId);
-
       if (result) {
         const { filePath, fileName } = result;
-
+        const regexExtension = /\.\w+$/i;
+        const hasExtension = regexExtension.test(fileName);
+        if (hasExtension) {
           await ctx.replyWithDocument({ source: filePath }, {
             caption: fileName,
             ...({ reply_to_message_id })
           });
-
           fs.unlinkSync(filePath);
-    } else {
+          return;
-      ctx.reply(Strings.maDownloadError, {
+        }
+      }
+    }
+    return ctx.reply(Strings.maInvalidModule, {
       parse_mode: "Markdown",
       ...({ reply_to_message_id })
     });
-    }
   });
 };