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import {
RelationshipAddEvent,
User,
PublicUserProjection,
RelationshipType,
RelationshipRemoveEvent,
emitEvent,
Relationship,
Config
} from "@fosscord/util";
import { Router, Response, Request } from "express";
import { HTTPError } from "lambert-server";
import { DiscordApiErrors } from "@fosscord/util";
import { route } from "@fosscord/api";
const router = Router();
const userProjection: (keyof User)[] = ["relationships", ...PublicUserProjection];
router.get("/", route({}), async (req: Request, res: Response) => {
const user = await User.findOneOrFail({
where: { id: req.user_id },
relations: ["relationships", "relationships.to"],
select: ["relationships"]
});
//TODO DTO
const related_users = user.relationships.map((r) => {
return {
id: r.to.id,
type: r.type,
nickname: null,
user: r.to.toPublicUser()
};
});
return res.json(related_users);
});
export interface RelationshipPutSchema {
type?: RelationshipType;
}
router.put("/:id", route({ body: "RelationshipPutSchema" }), async (req: Request, res: Response) => {
return await updateRelationship(
req,
res,
await User.findOneOrFail({ id: req.params.id }, { relations: ["relationships", "relationships.to"], select: userProjection }),
req.body.type ?? RelationshipType.friends
);
});
export interface RelationshipPostSchema {
discriminator: string;
username: string;
}
router.post("/", route({ body: "RelationshipPostSchema" }), async (req: Request, res: Response) => {
return await updateRelationship(
req,
res,
await User.findOneOrFail({
relations: ["relationships", "relationships.to"],
select: userProjection,
where: {
discriminator: String(req.body.discriminator).padStart(4, "0"), //Discord send the discriminator as integer, we need to add leading zeroes
username: req.body.username
}
}),
req.body.type
);
});
router.delete("/:id", route({}), async (req: Request, res: Response) => {
const { id } = req.params;
if (id === req.user_id) throw new HTTPError("You can't remove yourself as a friend");
const user = await User.findOneOrFail({ id: req.user_id }, { select: userProjection, relations: ["relationships"] });
const friend = await User.findOneOrFail({ id: id }, { select: userProjection, relations: ["relationships"] });
const relationship = user.relationships.find((x) => x.to_id === id);
const friendRequest = friend.relationships.find((x) => x.to_id === req.user_id);
if (!relationship) throw new HTTPError("You are not friends with the user", 404);
if (relationship?.type === RelationshipType.blocked) {
// unblock user
await Promise.all([
Relationship.delete({ id: relationship.id }),
emitEvent({
event: "RELATIONSHIP_REMOVE",
user_id: req.user_id,
data: relationship.toPublicRelationship()
} as RelationshipRemoveEvent)
]);
return res.sendStatus(204);
}
if (friendRequest && friendRequest.type !== RelationshipType.blocked) {
await Promise.all([
Relationship.delete({ id: friendRequest.id }),
await emitEvent({
event: "RELATIONSHIP_REMOVE",
data: friendRequest.toPublicRelationship(),
user_id: id
} as RelationshipRemoveEvent)
]);
}
await Promise.all([
Relationship.delete({ id: relationship.id }),
emitEvent({
event: "RELATIONSHIP_REMOVE",
data: relationship.toPublicRelationship(),
user_id: req.user_id
} as RelationshipRemoveEvent)
]);
return res.sendStatus(204);
});
export default router;
async function updateRelationship(req: Request, res: Response, friend: User, type: RelationshipType) {
const id = friend.id;
if (id === req.user_id) throw new HTTPError("You can't add yourself as a friend");
const user = await User.findOneOrFail(
{ id: req.user_id },
{ relations: ["relationships", "relationships.to"], select: userProjection }
);
var relationship = user.relationships.find((x) => x.to_id === id);
const friendRequest = friend.relationships.find((x) => x.to_id === req.user_id);
// TODO: you can add infinitely many blocked users (should this be prevented?)
if (type === RelationshipType.blocked) {
if (relationship) {
if (relationship.type === RelationshipType.blocked) throw new HTTPError("You already blocked the user");
relationship.type = RelationshipType.blocked;
await relationship.save();
} else {
relationship = await new Relationship({ to_id: id, type: RelationshipType.blocked, from_id: req.user_id }).save();
}
if (friendRequest && friendRequest.type !== RelationshipType.blocked) {
await Promise.all([
Relationship.delete({ id: friendRequest.id }),
emitEvent({
event: "RELATIONSHIP_REMOVE",
data: friendRequest.toPublicRelationship(),
user_id: id
} as RelationshipRemoveEvent)
]);
}
await emitEvent({
event: "RELATIONSHIP_ADD",
data: relationship.toPublicRelationship(),
user_id: req.user_id
} as RelationshipAddEvent);
return res.sendStatus(204);
}
const { maxFriends } = Config.get().limits.user;
if (user.relationships.length >= maxFriends) throw DiscordApiErrors.MAXIMUM_FRIENDS.withParams(maxFriends);
var incoming_relationship = new Relationship({ nickname: undefined, type: RelationshipType.incoming, to: user, from: friend });
var outgoing_relationship = new Relationship({
nickname: undefined,
type: RelationshipType.outgoing,
to: friend,
from: user
});
if (friendRequest) {
if (friendRequest.type === RelationshipType.blocked) throw new HTTPError("The user blocked you");
if (friendRequest.type === RelationshipType.friends) throw new HTTPError("You are already friends with the user");
// accept friend request
incoming_relationship = friendRequest;
incoming_relationship.type = RelationshipType.friends;
}
if (relationship) {
if (relationship.type === RelationshipType.outgoing) throw new HTTPError("You already sent a friend request");
if (relationship.type === RelationshipType.blocked) throw new HTTPError("Unblock the user before sending a friend request");
if (relationship.type === RelationshipType.friends) throw new HTTPError("You are already friends with the user");
outgoing_relationship = relationship;
outgoing_relationship.type = RelationshipType.friends;
}
await Promise.all([
incoming_relationship.save(),
outgoing_relationship.save(),
emitEvent({
event: "RELATIONSHIP_ADD",
data: outgoing_relationship.toPublicRelationship(),
user_id: req.user_id
} as RelationshipAddEvent),
emitEvent({
event: "RELATIONSHIP_ADD",
data: {
...incoming_relationship.toPublicRelationship(),
should_notify: true
},
user_id: id
} as RelationshipAddEvent)
]);
return res.sendStatus(204);
}
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