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import {
Attachment,
Channel,
Embed,
DiscordApiErrors,
emitEvent,
FosscordApiErrors,
getPermission,
getRights,
Message,
MessageCreateEvent,
MessageDeleteEvent,
MessageUpdateEvent,
Snowflake,
uploadFile,
MessageCreateSchema
} from "@fosscord/util";
import { Router, Response, Request } from "express";
import multer from "multer";
import { route } from "@fosscord/api";
import { handleMessage, postHandleMessage } from "@fosscord/api";
import { HTTPError } from "@fosscord/util";
const router = Router();
// TODO: message content/embed string length limit
const messageUpload = multer({
limits: {
fileSize: 1024 * 1024 * 100,
fields: 10,
files: 1
},
storage: multer.memoryStorage()
}); // max upload 50 mb
router.patch("/", route({ body: "MessageCreateSchema", permission: "SEND_MESSAGES", right: "SEND_MESSAGES" }), async (req: Request, res: Response) => {
const { message_id, channel_id } = req.params;
let body = req.body as MessageCreateSchema;
const message = await Message.findOneOrFail({ where: { id: message_id, channel_id }, relations: ["attachments"] });
const permissions = await getPermission(req.user_id, undefined, channel_id);
const rights = await getRights(req.user_id);
if ((req.user_id !== message.author_id)) {
if (!rights.has("MANAGE_MESSAGES")) {
permissions.hasThrow("MANAGE_MESSAGES");
body = { flags: body.flags };
// guild admins can only suppress embeds of other messages, no such restriction imposed to instance-wide admins
}
} else rights.hasThrow("SELF_EDIT_MESSAGES");
const new_message = await handleMessage({
...message,
// TODO: should message_reference be overridable?
// @ts-ignore
message_reference: message.message_reference,
...body,
author_id: message.author_id,
channel_id,
id: message_id,
edited_timestamp: new Date()
});
await Promise.all([
new_message!.save(),
await emitEvent({
event: "MESSAGE_UPDATE",
channel_id,
data: { ...new_message, nonce: undefined }
} as MessageUpdateEvent)
]);
postHandleMessage(message);
return res.json(message);
});
// Backfill message with specific timestamp
router.put(
"/",
messageUpload.single("file"),
async (req, res, next) => {
if (req.body.payload_json) {
req.body = JSON.parse(req.body.payload_json);
}
next();
},
route({ body: "MessageCreateSchema", permission: "SEND_MESSAGES", right: "SEND_BACKDATED_EVENTS" }),
async (req: Request, res: Response) => {
const { channel_id, message_id } = req.params;
let body = req.body as MessageCreateSchema;
const attachments: Attachment[] = [];
const rights = await getRights(req.user_id);
rights.hasThrow("SEND_MESSAGES");
// regex to check if message contains anything other than numerals ( also no decimals )
if (!message_id.match(/^\+?\d+$/)) {
throw new HTTPError("Message IDs must be positive integers", 400);
}
const snowflake = Snowflake.deconstruct(message_id)
if (Date.now() < snowflake.timestamp) {
// message is in the future
throw FosscordApiErrors.CANNOT_BACKFILL_TO_THE_FUTURE;
}
const exists = await Message.findOne({ where: { id: message_id, channel_id: channel_id }});
if (exists) {
throw FosscordApiErrors.CANNOT_REPLACE_BY_BACKFILL;
}
if (req.file) {
try {
const file: any = await uploadFile(`/attachments/${req.params.channel_id}`, req.file);
attachments.push({ ...file, proxy_url: file.url });
} catch (error) {
return res.status(400).json(error);
}
}
const channel = await Channel.findOneOrFail({ where: { id: channel_id }, relations: ["recipients", "recipients.user"] });
const embeds = body.embeds || [];
if (body.embed) embeds.push(body.embed);
let message = await handleMessage({
...body,
type: 0,
pinned: false,
author_id: req.user_id,
id: message_id,
embeds,
channel_id,
attachments,
edited_timestamp: undefined,
timestamp: new Date(snowflake.timestamp),
});
//Fix for the client bug
delete message.member
await Promise.all([
message.save(),
emitEvent({ event: "MESSAGE_CREATE", channel_id: channel_id, data: message } as MessageCreateEvent),
channel.save()
]);
postHandleMessage(message).catch((e) => { }); // no await as it shouldnt block the message send function and silently catch error
return res.json(message);
}
);
router.get("/", route({ permission: "VIEW_CHANNEL" }), async (req: Request, res: Response) => {
const { message_id, channel_id } = req.params;
const message = await Message.findOneOrFail({ where: { id: message_id, channel_id }, relations: ["attachments"] });
const permissions = await getPermission(req.user_id, undefined, channel_id);
if (message.author_id !== req.user_id) permissions.hasThrow("READ_MESSAGE_HISTORY");
return res.json(message);
});
router.delete("/", route({}), async (req: Request, res: Response) => {
const { message_id, channel_id } = req.params;
const channel = await Channel.findOneOrFail({ where: { id: channel_id } });
const message = await Message.findOneOrFail({ where: { id: message_id } });
const rights = await getRights(req.user_id);
if ((message.author_id !== req.user_id)) {
if (!rights.has("MANAGE_MESSAGES")) {
const permission = await getPermission(req.user_id, channel.guild_id, channel_id);
permission.hasThrow("MANAGE_MESSAGES");
}
} else rights.hasThrow("SELF_DELETE_MESSAGES");
await Message.delete({ id: message_id });
await emitEvent({
event: "MESSAGE_DELETE",
channel_id,
data: {
id: message_id,
channel_id,
guild_id: channel.guild_id
}
} as MessageDeleteEvent);
res.sendStatus(204);
});
export default router;
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