Attachment management for messages is good to go, doesn't handle embeds, but the links for those embeds still show up in the messages

src/utilties/discord/messages.ts

@@ -1,4 +1,4 @@
-import { Message, OmitPartialGroupDMChannel, PartialMessage } from "discord.js";
+import { Attachment, Message, OmitPartialGroupDMChannel, PartialMessage } from "discord.js";
 import { SQLCommon } from "../storage/interfaces";
 import { SQLResult } from "../storage/enumerations";
 
@@ -13,6 +13,15 @@ export async function doesMessageExist(db: SQLCommon, message: OmitPartialGroupD
     return queryResult.length != 0
 }
 
+export async function doesAttachmentExist(db: SQLCommon, attachment: Attachment) : Promise<boolean> {
+    const queryResult: Object[] = await db.getAllParameterized(
+        "SELECT * FROM message_attachments WHERE attachment_snowflake = ?",
+        [attachment.id]
+    )
+
+    return queryResult.length != 0
+}
+
 export async function insertMessage(db: SQLCommon, message: OmitPartialGroupDMChannel<Message<boolean>>) : Promise<SQLResult> {
     const alreadyExists: boolean = await doesMessageExist(db, message)
 
@@ -77,4 +86,26 @@ export async function markMessageDeleted(db: SQLCommon, message: OmitPartialGrou
         console.log(err)
         return SQLResult.FAILED
     }
+}
+
+export async function insertAttachment(db: SQLCommon, attachment: Attachment, message: OmitPartialGroupDMChannel<Message<boolean>> | PartialMessage) : Promise<SQLResult> {
+    const alreadyExists: boolean = await doesAttachmentExist(db, attachment)
+
+    if(alreadyExists) {
+        return SQLResult.ALREADYEXISTS
+    }
+
+    try {
+        await db.runParameterized(
+            "INSERT INTO message_attachments VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+            [attachment.id, message.id, attachment.name, attachment.description, message.createdTimestamp, 
+                attachment.contentType, attachment.url, 0]
+        )
+
+        return SQLResult.CREATED
+    } catch (err) {
+        // TODO Winston should handle this
+        console.log(err)
+        return SQLResult.FAILED
+    }
 }