224 lines
6.9 KiB
TypeScript
224 lines
6.9 KiB
TypeScript
import {
|
|
Channel,
|
|
Embed,
|
|
emitEvent,
|
|
Guild,
|
|
Message,
|
|
MessageCreateEvent,
|
|
MessageUpdateEvent,
|
|
getPermission,
|
|
getRights,
|
|
CHANNEL_MENTION,
|
|
Snowflake,
|
|
USER_MENTION,
|
|
ROLE_MENTION,
|
|
Role,
|
|
EVERYONE_MENTION,
|
|
HERE_MENTION,
|
|
MessageType,
|
|
User,
|
|
Application,
|
|
Webhook,
|
|
Attachment,
|
|
Config,
|
|
} from "@fosscord/util";
|
|
import { HTTPError } from "lambert-server";
|
|
import fetch from "node-fetch";
|
|
import cheerio from "cheerio";
|
|
import { MessageCreateSchema } from "../../routes/channels/#channel_id/messages";
|
|
const allow_empty = false;
|
|
// TODO: check webhook, application, system author, stickers
|
|
// TODO: embed gifs/videos/images
|
|
|
|
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; Fosscord/1.0; +https://github.com/fosscord/fosscord)"
|
|
},
|
|
size: 1024 * 1024 * 1,
|
|
compress: true,
|
|
method: "GET"
|
|
};
|
|
|
|
export async function handleMessage(opts: MessageOptions): Promise<Message> {
|
|
const channel = await Channel.findOneOrFail({ where: { id: opts.channel_id }, relations: ["recipients"] });
|
|
if (!channel || !opts.channel_id) throw new HTTPError("Channel not found", 404);
|
|
|
|
const message = new Message({
|
|
...opts,
|
|
sticker_items: opts.sticker_ids?.map((x) => ({ id: x })),
|
|
guild_id: channel.guild_id,
|
|
channel_id: opts.channel_id,
|
|
attachments: opts.attachments || [],
|
|
embeds: opts.embeds || [],
|
|
reactions: /*opts.reactions ||*/ [],
|
|
type: opts.type ?? 0
|
|
});
|
|
|
|
if (message.content && message.content.length > Config.get().limits.message.maxCharacters) {
|
|
throw new HTTPError("Content length over max character limit")
|
|
}
|
|
|
|
if (opts.author_id) {
|
|
message.author = await User.getPublicUser(opts.author_id);
|
|
const rights = await getRights(opts.author_id);
|
|
rights.hasThrow("SEND_MESSAGES");
|
|
}
|
|
if (opts.application_id) {
|
|
message.application = await Application.findOneOrFail({ id: opts.application_id });
|
|
}
|
|
if (opts.webhook_id) {
|
|
message.webhook = await Webhook.findOneOrFail({ id: opts.webhook_id });
|
|
}
|
|
|
|
const permission = await getPermission(opts.author_id, channel.guild_id, opts.channel_id);
|
|
permission.hasThrow("SEND_MESSAGES");
|
|
if (permission.cache.member) {
|
|
message.member = permission.cache.member;
|
|
}
|
|
|
|
if (opts.tts) permission.hasThrow("SEND_TTS_MESSAGES");
|
|
if (opts.message_reference) {
|
|
permission.hasThrow("READ_MESSAGE_HISTORY");
|
|
// code below has to be redone when we add custom message routing
|
|
if (message.guild_id !== null) {
|
|
const guild = await Guild.findOneOrFail({ id: channel.guild_id });
|
|
if (!guild.features.includes("CROSS_CHANNEL_REPLIES")) {
|
|
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");
|
|
}
|
|
}
|
|
/** Q: should be checked if the referenced message exists? ANSWER: NO
|
|
otherwise backfilling won't work **/
|
|
// @ts-ignore
|
|
message.type = MessageType.REPLY;
|
|
}
|
|
|
|
// TODO: stickers/activity
|
|
if (!allow_empty && (!opts.content && !opts.embeds?.length && !opts.attachments?.length && !opts.sticker_ids?.length)) {
|
|
throw new HTTPError("Empty messages are not allowed", 50006);
|
|
}
|
|
|
|
var content = opts.content;
|
|
var mention_channel_ids = [] as string[];
|
|
var mention_role_ids = [] as string[];
|
|
var mention_user_ids = [] as string[];
|
|
var mention_everyone = false;
|
|
|
|
if (content) { // TODO: explicit-only mentions
|
|
message.content = content.trim();
|
|
for (const [_, mention] of content.matchAll(CHANNEL_MENTION)) {
|
|
if (!mention_channel_ids.includes(mention)) mention_channel_ids.push(mention);
|
|
}
|
|
|
|
for (const [_, mention] of content.matchAll(USER_MENTION)) {
|
|
if (!mention_user_ids.includes(mention)) mention_user_ids.push(mention);
|
|
}
|
|
|
|
await Promise.all(
|
|
Array.from(content.matchAll(ROLE_MENTION)).map(async ([_, mention]) => {
|
|
const role = await Role.findOneOrFail({ id: mention, guild_id: channel.guild_id });
|
|
if (role.mentionable || permission.has("MANAGE_ROLES")) {
|
|
mention_role_ids.push(mention);
|
|
}
|
|
})
|
|
);
|
|
|
|
if (permission.has("MENTION_EVERYONE")) {
|
|
mention_everyone = !!content.match(EVERYONE_MENTION) || !!content.match(HERE_MENTION);
|
|
}
|
|
}
|
|
|
|
message.mention_channels = mention_channel_ids.map((x) => new Channel({ id: x }));
|
|
message.mention_roles = mention_role_ids.map((x) => new Role({ id: x }));
|
|
message.mentions = mention_user_ids.map((x) => new User({ id: x }));
|
|
message.mention_everyone = mention_everyone;
|
|
|
|
// TODO: check and put it all in the body
|
|
|
|
return message;
|
|
}
|
|
|
|
// 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, 20); // embed max 20 links — TODO: make this configurable with instance policies
|
|
|
|
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",
|
|
channel_id: message.channel_id,
|
|
data
|
|
} as MessageUpdateEvent),
|
|
Message.update({ id: message.id, channel_id: message.channel_id }, data)
|
|
]);
|
|
}
|
|
|
|
export async function sendMessage(opts: MessageOptions) {
|
|
const message = await handleMessage({ ...opts, timestamp: new Date() });
|
|
|
|
await Promise.all([
|
|
Message.insert(message),
|
|
emitEvent({ event: "MESSAGE_CREATE", channel_id: opts.channel_id, data: message.toJSON() } as MessageCreateEvent)
|
|
]);
|
|
|
|
postHandleMessage(message).catch((e) => {}); // no await as it should catch error non-blockingly
|
|
|
|
return message;
|
|
}
|
|
|
|
interface MessageOptions extends MessageCreateSchema {
|
|
id?: string;
|
|
type?: MessageType;
|
|
pinned?: boolean;
|
|
author_id?: string;
|
|
webhook_id?: string;
|
|
application_id?: string;
|
|
embeds?: Embed[];
|
|
channel_id?: string;
|
|
attachments?: Attachment[];
|
|
edited_timestamp?: Date;
|
|
timestamp?: Date;
|
|
}
|