Implement disabling of message embeds

As requested by @Juby210

src/commands/system/admin.ts

@@ -61,6 +61,29 @@ export default new NamedCommand({
                         })
                     })
                 }),
+                messageembeds: new NamedCommand({
+                    description: "Enable or disable sending message previews.",
+                    usage: "enable/disable",
+                    run: "Please specify `enable` or `disable`.",
+                    subcommands: {
+                        true: new NamedCommand({
+                            description: "Enable sending of message previews.",
+                            async run({send, guild}) {
+                                Storage.getGuild(guild!.id).messageEmbeds = true;
+                                Storage.save();
+                                send("Sending of message previews has been enabled.");
+                            }
+                        }),
+                        false: new NamedCommand({
+                            description: "Disable sending of message previews.",
+                            async run({send, guild}) {
+                                Storage.getGuild(guild!.id).messageEmbeds = false;
+                                Storage.save();
+                                send("Sending of message previews has been disabled.");
+                            }
+                        })
+                    }
+                }),
                 autoroles: new NamedCommand({
                     description: "Configure your server's autoroles.",
                     usage: "<roles...>",

src/modules/messageEmbed.ts

@@ -2,8 +2,12 @@ import {client} from "../index";
 import {MessageEmbed} from "discord.js";
 import {getPrefix} from "../structures";
 import {getMessageByID} from "onion-lasers";
+import {Storage} from "../structures";
 
 client.on("message", async (message) => {
+    const {messageEmbeds} = Storage.getGuild(message.guild!.id);
+
+    if (messageEmbeds) {
         // Only execute if the message is from a user and isn't a command.
         if (message.content.startsWith(getPrefix(message.guild)) || message.author.bot) return;
         const messageLink = extractFirstMessageLink(message.content);
@@ -46,6 +50,7 @@ client.on("message", async (message) => {
         }
 
         return await message.channel.send(infoEmbed);
+    } else return;
 });
 
 export function extractFirstMessageLink(message: string): [string, string, string] | null {

src/structures.ts

@@ -79,6 +79,7 @@ class Member {
 
 class Guild {
     public prefix: string | null;
+    public messageEmbeds: boolean | null;
     public welcomeType: "none" | "text" | "graphical";
     public welcomeChannel: string | null;
     public welcomeMessage: string | null;
@@ -90,6 +91,7 @@ class Guild {
 
     constructor(data?: GenericJSON) {
         this.prefix = select(data?.prefix, null, String);
+        this.messageEmbeds = select(data?.messageLinks, true, Boolean);
         this.welcomeChannel = select(data?.welcomeChannel, null, String);
         this.welcomeMessage = select(data?.welcomeMessage, null, String);
         this.autoRoles = select(data?.autoRoles, null, String, true);