src/events/message/messageCreate.ts

@@ -0,0 +1,175 @@
+import { Client, GuildMember, Message, MessageEmbed, TextBasedChannel } from 'discord.js';
+import { getLocale } from '../../utils/locales';
+import { isImage, userWithNickname } from '../../utils/misc';
+import { showDate } from '../../utils/time';
+
+/** https://discord.js.org/#/docs/discord.js/main/class/Client?scrollTo=e-messageCreate */
+export default async (message: Message, client: Client) => {
+	// Ignore message if
+	if (
+		// Author is a bot
+		message.author.bot ||
+		// Author is Discord
+		message.author.system ||
+		// Message isn't a message
+		message.system ||
+		// Message is in PM (future-proof if we add Intents.FLAGS.DIRECT_MESSAGES)
+		!message.guild ||
+		// Guild is offline
+		!message.guild.available
+	) {
+		return;
+	}
+
+	/* Citation */
+	const regex = 'https://(?:canary\\.|ptb\\.)?discord(?:app)?\\.com/channels/(\\d{17,19})/(\\d{17,19})/(\\d{17,19})';
+	const urls = message.content.match(new RegExp(regex, 'g'));
+
+	// Ignore message if there is no URLs
+	if (!urls) {
+		return;
+	}
+
+	const messages = (
+		await Promise.all(
+			urls.reduce(
+				(data: {
+					message_id: string;
+					channel: TextBasedChannel;
+				}[] = [], match) => {
+					const [,
+						guild_id,
+						channel_id,
+						message_id,
+					] = new RegExp(regex).exec(match) as RegExpExecArray;
+
+					// If message posted in another guild
+					if (guild_id !== message.guild?.id) {
+						return data;
+					}
+
+					const channel =
+						message.guild.channels.cache.get(channel_id) as TextBasedChannel;
+
+					// If channel doesn't exist in the guild and isn't text
+					if (!channel) {
+						return data;
+					}
+
+					data.push({ message_id, channel });
+
+					return data;
+				}, []
+			).map(async ({ message_id, channel }) => {
+				const quoted_message = await channel.messages
+					.fetch(message_id)
+					.catch(() => undefined);
+
+				// If message doesn't exist or empty
+				if (!quoted_message || (
+					!quoted_message.content &&
+					quoted_message.attachments.size == 0)
+				) {
+					return;
+				}
+
+				return quoted_message;
+			})
+		)
+	// Remove undefined elements
+	).filter(Boolean);
+
+	const loc = getLocale(client, client.config.default_lang);
+
+	// Remove duplicates then map the quoted posts
+	[...new Set(messages)].map(quoted_post => {
+		const embed = new MessageEmbed()
+			.setColor('#2f3136')
+			.setAuthor({
+				name: 'Citation',
+				iconURL: quoted_post?.author.displayAvatarURL(),
+			});
+
+		// Handle attachments
+		if (quoted_post?.attachments.size !== 0) {
+			if (quoted_post?.attachments.size === 1 && isImage(
+				quoted_post.attachments.first()?.name as string
+			)) {
+				// Only contains one image
+				embed.setImage(quoted_post.attachments.first()?.url as string);
+			} else {
+				// Contains more than one image and/or other files
+				let files = '';
+				quoted_post?.attachments.forEach(file => files +=
+					`[${file.name}](${file.url}), `
+				);
+				embed.addFields({
+					// TODO: Don't pluralize when there is only one file.
+					name: 'Fichiers joints',
+					// TODO: Check if don't exceed char limit, if yes, split
+					// files into multiples field.
+					value: `${files.slice(0, -2)}.`,
+				});
+			}
+		}
+
+		// Description as post content
+		embed.setDescription(quoted_post?.content ?? '');
+
+		// Footer
+		let footer = `Posté le ${showDate(
+			client.config.default_lang,
+			loc,
+			quoted_post?.createdAt as Date
+		)}`;
+		if (quoted_post?.editedAt) {
+			footer += ` et modifié le ${showDate(
+				client.config.default_lang,
+				loc,
+				quoted_post.editedAt
+			)}`;
+		}
+
+		let author = 'Auteur';
+		if (message.author == quoted_post?.author) {
+			author += ' & Citateur';
+		} else {
+			footer += `\nCité par ${userWithNickname(
+				message.member as GuildMember
+			) ?? '?'} le ${showDate(
+				client.config.default_lang,
+				loc,
+				message.createdAt
+			)}`;
+		}
+
+		embed.setFooter({
+			text: footer,
+			iconURL: message.author.avatarURL() ?? undefined,
+		});
+
+		// Location/author of the quoted post
+		embed.addField(author, `${quoted_post?.author}`, true);
+		embed.addField(
+			'Message', `${quoted_post?.channel} - [Lien Message](${quoted_post?.url})`,
+			true
+		);
+
+		// Delete source message if no content when removing links
+		if (
+			!message.content.replace(new RegExp(regex, 'g'), '').trim() &&
+			messages.length === urls.length &&
+			!message.mentions.repliedUser
+		) {
+			message.delete();
+			return message.channel.send({ embeds: [embed] });
+		} else {
+			return message.reply({
+				embeds: [embed],
+				allowedMentions: {
+					repliedUser: false,
+				},
+			});
+		}
+	});
+};

src/locales/en-US.json

@@ -12,5 +12,7 @@
 	"c_help_opt1_desc": "Command wanted in depth.",
 	"c_help1": "List of categories and associated commands",
 	"c_help2": "`/help <command>` to get more information about a command.",
-	"c_help3": "Can't find :"
+	"c_help3": "Can't find :",
+
+	"u_time_at": "at"
 }

src/locales/fr.json

@@ -12,5 +12,7 @@
 	"c_help_opt1_desc": "Commande voulu en détail.",
 	"c_help1": "Liste des catégories et des commandes associées",
 	"c_help2": "`/help <commande>` pour obtenir plus d'informations sur une commande.",
-	"c_help3": "Impossible de trouver :"
+	"c_help3": "Impossible de trouver :",
+
+	"u_time_at": "à"
 }

src/modules/client.ts

@@ -0,0 +1,41 @@
+import { Collection } from 'discord.js';
+import { SlashCommandBuilder } from '@discordjs/builders';
+
+export {};
+
+declare module 'discord.js' {
+	// eslint-disable-next-line no-shadow
+	export interface Client {
+		/** Store the configuration */
+		config: {
+			/** Bot version */
+			version: string,
+			/** Bot token from env variable */
+			token_discord: string | undefined,
+			/** Default lang used */
+			default_lang: string
+		},
+		/** Store all the slash commands */
+		commands: {
+			categories: Collection<
+				/** Category name */
+				string,
+				/** Name of the commands in the category */
+				string[]
+			>,
+			list: Collection<
+				/** Command name */
+				string,
+				/** Command itself */
+				{
+					/** Data about the command */
+					data: SlashCommandBuilder,
+					/** How the command interact */
+					interaction: (interaction: CommandInteraction, client: Client) => unknown
+				}
+			>,
+		}
+		/** Store all the localizations */
+		locales: Map<string, Map<string, string>>
+	}
+}

src/utils/client.ts

@@ -1,50 +1,14 @@
 import { Client, Collection, Intents } from 'discord.js';
 import { readFileSync } from 'fs';
-import { SlashCommandBuilder } from '@discordjs/builders';
 import { loadLocales } from './locales';
-
+import '../modules/client';
-declare module 'discord.js' {
-    // eslint-disable-next-line no-shadow
-    export interface Client {
-		/** Store the configuration */
-		config: {
-			/** Bot version */
-			version: string,
-			/** Bot token from env variable */
-			token_discord: string | undefined,
-			/** Default lang used */
-			default_lang: string
-		},
-		/** Store all the slash commands */
-		commands: {
-			categories: Collection<
-				/** Category name */
-				string,
-				/** Name of the commands in the category  */
-				string[]
-			>,
-			list: Collection<
-				/** Command name */
-				string,
-				/** Command itself */
-				{
-					/** Data about the command */
-					data: SlashCommandBuilder,
-					/** How the command interact */
-					interaction: (interaction: CommandInteraction, client: Client) => unknown
-				}
-			>,
-		}
-		/** Store all the localizations */
-		locales: Map<string, Map<string, string>>
-    }
-}
 
 /** Creation of the client and definition of its properties. */
 export default async () => {
 	const client: Client = new Client({
 		intents: [
 			Intents.FLAGS.GUILDS,
+			Intents.FLAGS.GUILD_MESSAGES,
 		],
 	});
 

src/utils/misc.ts

@@ -1,3 +1,5 @@
+import { GuildMember } from 'discord.js';
+
 /**
  * Log module status.
  * @param {string} name Module name
@@ -36,3 +38,41 @@ export const removeExtension = (filename: string) => {
 
 	return array.join('.');
 };
+
+/**
+ * Get extension from a filename.
+ * @param filename string of the filename
+ * @returns string of the extension if it exists
+ */
+export const getExtension = (filename: string) => {
+	const array = filename.split('.');
+
+	return array.pop();
+};
+
+/**
+ * Define if a media is a media based on file extension.
+ * @param filename string of the filename
+ * @returns true is file is a media
+ */
+export const isImage = (filename: string) => {
+	return Boolean(getExtension(filename)?.match(
+		/jpg|jpeg|png|webp|gif/
+	));
+};
+
+/**
+ * String with pseudo and nickname if available.
+ * @param member Member
+ * @returns string
+ */
+export const userWithNickname = (member: GuildMember) => {
+	if (!member) {
+		return undefined;
+	}
+	if (member.nickname) {
+		return `${member.nickname} (${member.user.tag})`;
+	} else {
+		return member.user.tag;
+	}
+};

src/utils/time.ts

@@ -0,0 +1,16 @@
+/**
+ * Parsed string adapted with TZ (locales) and format for the specified lang.
+ * @param tz Lang
+ * @param locale Locales
+ * @param date Date
+ * @returns String
+ */
+export const showDate = (
+	tz: string,
+	locale: Map<string, unknown>,
+	date: Date
+) => {
+	return date.toLocaleString(tz).replace(' ', ` ${
+		locale.get('u_time_at')
+	} `);
+};