Added message quoting.

See https://is.gd/lpGqxj

package-lock.json

@@ -1182,9 +1182,9 @@
             "integrity": "sha512-OdjXJxnCN1AvyLSzeKIgXTXxV+99ZuXl3Hpo9XpJAv9MBcHrrJOQ5kV7ypXOuQie+AmWG25hLbiKdwYTifzcfQ=="
         },
         "typescript": {
-            "version": "3.9.7",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.7.tgz",
-            "integrity": "sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==",
+            "version": "4.2.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.3.tgz",
+            "integrity": "sha512-qOcYwxaByStAWrBf4x0fibwZvMRG+r4cQoTjbPtUlrWjBHbmCAww1i448U0GJ+3cNNEtebDteo/cHOR3xJ4wEw==",
             "dev": true
         },
         "which": {

src/core/lib.ts

@@ -556,6 +556,7 @@ export abstract class GenericStructure {
 
     public save(asynchronous = true) {
         const tag = this.__meta__;
+        /// @ts-ignore
         delete this.__meta__;
         FileManager.write(tag, this, asynchronous);
         this.__meta__ = tag;

src/events/message.ts

@@ -4,6 +4,7 @@ import {hasPermission, getPermissionLevel, PermissionNames} from "../core/permis
 import {Permissions, Collection} from "discord.js";
 import {getPrefix} from "../core/structures";
 import $, {replyEventListeners} from "../core/lib";
+import quote from "../modules/message_embed";
 
 // It's a rather hacky solution, but since there's no top-level await, I just have to make the loading conditional.
 let commands: Collection<string, Command> | null = null;
@@ -31,6 +32,10 @@ export default new Event<"message">({
         const clientUser = message.client.user;
         let usesBotSpecificPrefix = false;
 
+        if (!message.content.startsWith(prefix)) {
+            return quote(message);
+        }
+
         // If the client user exists, check if it starts with the bot-specific prefix.
         if (clientUser) {
             // If the prefix starts with the bot-specific prefix, go off that instead (these two options must mutually exclude each other).

src/modules/message_embed.ts

@@ -0,0 +1,60 @@
+import { client } from '..'
+import { Message, TextChannel, APIMessage, MessageEmbed } from 'discord.js'
+import { getPrefix } from '../core/structures'
+import { DiscordAPIError } from 'discord.js'
+
+export default async function quote(message: Message) {
+    if (message.author.bot) return
+    // const message_link_regex = message.content.match(/(!)?https?:\/\/\w+\.com\/channels\/(\d+)\/(\d+)\/(\d+)/)
+    const message_link_regex = message.content.match(/([<!]?)https?:\/\/(?:ptb\.|canary\.|)discord(?:app)?\.com\/channels\/(\d+)\/(\d+)\/(\d+)(>?)/)
+
+    if (message_link_regex == null) return
+    const [, char, guildID, channelID, messageID] = message_link_regex
+
+    if (char || message.content.startsWith(getPrefix(message.guild))) return
+
+    try {
+        const channel = client.guilds.cache.get(guildID)?.channels.cache.get(channelID) as TextChannel
+        const link_message = await channel.messages.fetch(messageID)
+
+        let rtmsg: string | APIMessage = ''
+        if (link_message.cleanContent) {
+            rtmsg = new APIMessage(message.channel as TextChannel, {
+                content: link_message.cleanContent,
+                disableMentions: 'all',
+                files: link_message.attachments.array()
+            })
+        }
+
+        const embeds = [
+            ...link_message.embeds.filter(v => v.type == 'rich'),
+            ...link_message.attachments.values()
+        ]
+
+        /// @ts-ignore
+        if (!link_message.cleanContent && embeds.empty) {
+            const Embed = new MessageEmbed()
+                .setDescription('🚫 The message is empty.')
+            return message.channel.send(Embed)
+        }
+
+        const infoEmbed = new MessageEmbed()
+            .setAuthor(
+                link_message.author.username,
+                link_message.author.displayAvatarURL({format: 'png', dynamic: true, size: 4096}))
+            .setTimestamp(link_message.createdTimestamp)
+            .setDescription(`${link_message.cleanContent}\n\nSent in **${link_message.guild?.name}** | <#${link_message.channel.id}> ([link](https://discord.com/channels/${guildID}/${channelID}/${messageID}))`);
+            if (link_message.attachments.size !== 0) {
+                const image = link_message.attachments.first();
+                /// @ts-ignore
+                infoEmbed.setImage(image.url);
+            }
+
+        await message.channel.send(infoEmbed)
+    } catch (error) {
+        if (error instanceof DiscordAPIError) {
+            message.channel.send("I don't have access to this channel, or something else went wrong.")
+        }
+        return console.error(error)
+    }
+}