Add embed helper

Author: twobiers

src/commands/instagram.ts

@@ -3,6 +3,7 @@ import type { Message } from "discord.js";
 import type { SpecialCommand } from "#/commands/command.ts";
 import type { BotContext } from "#/context.ts";
 import * as instagramService from "#/service/instagram.ts";
+import { replyWithFallbackEmbed } from "#/utils/embedUtils.ts";
 
 const instagramOptions = {
     uriPattern:
@@ -14,24 +15,6 @@ const instagramOptions = {
     },
 } as const;
 
-const FALLBACK_EMBED_WAIT_MS = 5000;
-
-async function replyWithFallback(message: Message<true>, fallbackUrl: string) {
-    const reply = await message.reply({
-        content: fallbackUrl,
-        allowedMentions: { repliedUser: false },
-    });
-
-    await new Promise(resolve => setTimeout(resolve, FALLBACK_EMBED_WAIT_MS));
-    const fetched = await reply.fetch();
-
-    if (fetched.embeds.length > 0) {
-        await message.suppressEmbeds(true);
-    } else {
-        await fetched.delete();
-    }
-}
-
 export default class InstagramLink implements SpecialCommand {
     name = "Instagram";
     description = "Embedded Instagram Links";
@@ -87,7 +70,7 @@ export default class InstagramLink implements SpecialCommand {
             try {
                 const result = await instagramService.downloadInstagramContent(context, postUri);
                 if (!result.success) {
-                    await replyWithFallback(message, fallbackUrl);
+                    await replyWithFallbackEmbed(message, fallbackUrl);
                     return;
                 }
 
@@ -106,7 +89,7 @@ export default class InstagramLink implements SpecialCommand {
                     allowedMentions: { repliedUser: false },
                 });
             } catch {
-                await replyWithFallback(message, fallbackUrl);
+                await replyWithFallbackEmbed(message, fallbackUrl);
             }
         }
         await message.suppressEmbeds(true);

src/commands/tiktok.ts

@@ -1,6 +1,7 @@
 import type { Message } from "discord.js";
 
 import type { SpecialCommand } from "#/commands/command.ts";
+import { replyWithFallbackEmbed } from "#/utils/embedUtils.ts";
 
 const tiktokUrlPattern = /https?:\/\/(?:(?:www|m|vm)\.)?tiktok\.com\/([^?&\s/]+)/i;
 
@@ -24,15 +25,6 @@ export default class TikTokLink implements SpecialCommand {
             return;
         }
 
-        const reply = await message.reply({
-            content: `https://kktiktok.com/${match[1]}`,
-            allowedMentions: { repliedUser: false },
-        });
-
-        if (reply.embeds.length > 0) {
-            await message.suppressEmbeds(true);
-        } else {
-            await reply.delete();
-        }
+        await replyWithFallbackEmbed(message, `https://kktiktok.com/${match[1]}`);
     }
 }

src/utils/embedUtils.ts

@@ -0,0 +1,23 @@
+import type { Message } from "discord.js";
+
+const EMBED_WAIT_MS = 5000;
+
+/**
+ * Sends a fallback embed URL as a reply, waits for Discord to resolve the embed,
+ * then suppresses the original message's embeds if the reply has one, or deletes the reply otherwise.
+ */
+export async function replyWithFallbackEmbed(message: Message<true>, fallbackUrl: string) {
+    const reply = await message.reply({
+        content: fallbackUrl,
+        allowedMentions: { repliedUser: false },
+    });
+
+    await new Promise(resolve => setTimeout(resolve, EMBED_WAIT_MS));
+    const fetched = await reply.fetch();
+
+    if (fetched.embeds.length > 0) {
+        await message.suppressEmbeds(true);
+    } else {
+        await fetched.delete();
+    }
+}