diff --git a/api/src/util/Message.ts b/api/src/util/Message.ts
new file mode 100644
index 00000000..e811f522
--- /dev/null
+++ b/api/src/util/Message.ts
@@ -0,0 +1,136 @@
+import { ChannelModel, Embed, Message, MessageCreateEvent, MessageUpdateEvent } from "@fosscord/server-util";
+import { Snowflake } from "@fosscord/server-util";
+import { MessageModel } from "@fosscord/server-util";
+import { PublicMemberProjection } from "@fosscord/server-util";
+import { toObject } from "@fosscord/server-util";
+import { getPermission } from "@fosscord/server-util";
+import { HTTPError } from "lambert-server";
+import fetch from "node-fetch";
+import cheerio from "cheerio";
+import { emitEvent } from "./Event";
+import { MessageType } from "@fosscord/server-util/dist/util/Constants";
+// TODO: check webhook, application, system author
+
+const LINK_REGEX = /https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)/g;
+
+const DEFAULT_FETCH_OPTIONS: any = {
+ redirect: "follow",
+ follow: 1,
+ headers: {
+ "user-agent": "Mozilla/5.0 (compatible; Discordbot/2.0; +https://discordapp.com)"
+ },
+ size: 1024 * 1024 * 1,
+ compress: true,
+ method: "GET"
+};
+
+export async function handleMessage(opts: Partial<Message>) {
+ const channel = await ChannelModel.findOne(
+ { id: opts.channel_id },
+ { guild_id: true, type: true, permission_overwrites: true, recipient_ids: true, owner_id: true }
+ )
+ .lean() // lean is needed, because we don't want to populate .recipients that also auto deletes .recipient_ids
+ .exec();
+ if (!channel || !opts.channel_id) throw new HTTPError("Channel not found", 404);
+ // TODO: are tts messages allowed in dm channels? should permission be checked?
+
+ // @ts-ignore
+ const permissions = await getPermission(opts.author_id, channel.guild_id, opts.channel_id, { channel });
+ permissions.hasThrow("SEND_MESSAGES");
+ if (opts.tts) permissions.hasThrow("SEND_TTS_MESSAGES");
+ if (opts.message_reference) {
+ permissions.hasThrow("READ_MESSAGE_HISTORY");
+ if (opts.message_reference.guild_id !== channel.guild_id) throw new HTTPError("You can only reference messages from this guild");
+ if (opts.message_reference.channel_id !== opts.channel_id) throw new HTTPError("You can only reference messages from this channel");
+ // TODO: should be checked if the referenced message exists?
+ // @ts-ignore
+ opts.type = MessageType.REPLY;
+ }
+
+ if (!opts.content && !opts.embeds?.length && !opts.attachments?.length && !opts.stickers?.length && !opts.activity) {
+ throw new HTTPError("Empty messages are not allowed", 50006);
+ }
+
+ // TODO: check and put it all in the body
+ return {
+ ...opts,
+ guild_id: channel.guild_id,
+ channel_id: opts.channel_id,
+ // TODO: generate mentions and check permissions
+ mention_channels_ids: [],
+ mention_role_ids: [],
+ mention_user_ids: [],
+ attachments: opts.attachments || [], // TODO: message attachments
+ embeds: opts.embeds || [],
+ reactions: opts.reactions || [],
+ type: opts.type ?? 0
+ };
+}
+
+// TODO: cache link result in db
+export async function postHandleMessage(message: Message) {
+ var links = message.content?.match(LINK_REGEX);
+ if (!links) return;
+
+ const data = { ...message };
+ data.embeds = data.embeds.filter((x) => x.type !== "link");
+
+ links = links.slice(0, 5); // embed max 5 links
+
+ for (const link of links) {
+ try {
+ const request = await fetch(link, DEFAULT_FETCH_OPTIONS);
+
+ const text = await request.text();
+ const $ = cheerio.load(text);
+
+ const title = $('meta[property="og:title"]').attr("content");
+ const provider_name = $('meta[property="og:site_name"]').text();
+ const author_name = $('meta[property="article:author"]').attr("content");
+ const description = $('meta[property="og:description"]').attr("content") || $('meta[property="description"]').attr("content");
+ const image = $('meta[property="og:image"]').attr("content");
+ const url = $('meta[property="og:url"]').attr("content");
+ // TODO: color
+ const embed: Embed = {
+ provider: {
+ url: link,
+ name: provider_name
+ }
+ };
+
+ if (author_name) embed.author = { name: author_name };
+ if (image) embed.thumbnail = { proxy_url: image, url: image };
+ if (title) embed.title = title;
+ if (url) embed.url = url;
+ if (description) embed.description = description;
+
+ if (title || description) {
+ data.embeds.push(embed);
+ }
+ } catch (error) {}
+ }
+
+ await Promise.all([
+ emitEvent({
+ event: "MESSAGE_UPDATE",
+ guild_id: message.guild_id,
+ channel_id: message.channel_id,
+ data
+ } as MessageUpdateEvent),
+ MessageModel.updateOne({ id: message.id, channel_id: message.channel_id }, data).exec()
+ ]);
+}
+
+export async function sendMessage(opts: Partial<Message>) {
+ const message = await handleMessage({ ...opts, id: Snowflake.generate(), timestamp: new Date() });
+
+ const data = toObject(
+ await new MessageModel(message).populate({ path: "member", select: PublicMemberProjection }).populate("referenced_message").save()
+ );
+
+ await emitEvent({ event: "MESSAGE_CREATE", channel_id: opts.channel_id, data, guild_id: message.guild_id } as MessageCreateEvent);
+
+ postHandleMessage(data).catch((e) => {}); // no await as it shouldnt block the message send function and silently catch error
+
+ return data;
+}
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