Check when we exceed char limit by splitting files into multiples field

src/events/message/messageCreate.ts

@@ -1,4 +1,4 @@
-import { Client, EmbedBuilder, Message, TextBasedChannel } from "discord.js";
+import { APIEmbedField, Client, EmbedBuilder, Message, TextBasedChannel } from "discord.js";
 import { getLocale } from "../../utils/locales";
 import { isImage, userWithNickname } from "../../utils/misc";
 import { showDate } from "../../utils/time";
@@ -114,18 +114,33 @@ export default async (message: Message, client: Client) => {
           embed.setImage(quoted_post.attachments.first()!.url);
         } else {
           // Contains more than one image and/or other files
-          let files = "";
-          quoted_post.attachments.forEach((file) => (files += `[${file.name}](${file.url}), `));
-          embed.addFields({
-            name:
-              quoted_post.attachments.size > 1
-                ? loc.get("e_attachements")
-                : loc.get("e_attachement"),
 
-            // TODO: Check if don't exceed char limit, if yes, split
-            // files into multiples field.
-            value: `${files.slice(0, -2)}.`,
+          // We are currently losing a link to a file if the link is too long,
+          // but we can't do much about it
+          const maxFieldValueLength = 1024;
+          const files = quoted_post.attachments
+            .map((file) => `[${file.name}](${file.url}`)
+            .filter((link) => link.length <= maxFieldValueLength);
+
+          let currentField = "";
+          const fields: APIEmbedField[] = [];
+          files.forEach((file, idx) => {
+            const potentialField = `${currentField}, ${file}`;
+
+            if (potentialField.length > maxFieldValueLength || idx === files.length - 1) {
+              fields.push({
+                name: loc.get(
+                  quoted_post.attachments.size > 1 ? "e_attachements" : "e_attachement",
+                ),
+                value: currentField,
+              });
+              currentField = file;
+            } else {
+              currentField = potentialField;
+            }
           });
+
+          embed.addFields(fields);
         }
       }