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import {
RelationshipAddEvent,
UserModel,
PublicUserProjection,
toObject,
RelationshipType,
RelationshipRemoveEvent,
UserDocument
} from "@fosscord/server-util";
import { Router, Response, Request } from "express";
import { HTTPError } from "lambert-server";
import { emitEvent } from "../../../util/Event";
import { check, Length } from "../../../util/instanceOf";
const router = Router();
const userProjection = { "user_data.relationships": true, ...PublicUserProjection };
router.get("/", async (req: Request, res: Response) => {
const user = await UserModel.findOne({ id: req.user_id }, { user_data: { relationships: true } })
.populate({ path: "user_data.relationships.id", model: UserModel })
.exec();
return res.json(toObject(user.user_data.relationships));
});
async function addRelationship(req: Request, res: Response, friend: UserDocument, 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 UserModel.findOne({ id: req.user_id }, userProjection).exec();
const newUserRelationships = [...user.user_data.relationships];
const newFriendRelationships = [...friend.user_data.relationships];
var relationship = newUserRelationships.find((x) => x.id === id);
const friendRequest = newFriendRelationships.find((x) => x.id === req.user_id);
if (type === RelationshipType.blocked) {
if (relationship) {
if (relationship.type === RelationshipType.blocked) throw new HTTPError("You already blocked the user");
relationship.type = RelationshipType.blocked;
} else {
relationship = { id, type: RelationshipType.blocked };
newUserRelationships.push(relationship);
}
if (friendRequest && friendRequest.type !== RelationshipType.blocked) {
newFriendRelationships.remove(friendRequest);
await Promise.all([
UserModel.updateOne({ id: friend.id }, { "user_data.relationships": newFriendRelationships }).exec(),
emitEvent({
event: "RELATIONSHIP_REMOVE",
data: friendRequest,
user_id: id
} as RelationshipRemoveEvent)
]);
}
await Promise.all([
UserModel.updateOne({ id: req.user_id }, { "user_data.relationships": newUserRelationships }).exec(),
emitEvent({
event: "RELATIONSHIP_ADD",
data: {
...toObject(relationship),
user: { ...toObject(friend), user_data: undefined }
},
user_id: req.user_id
} as RelationshipAddEvent)
]);
return res.sendStatus(204);
}
var incoming_relationship = { id: req.user_id, nickname: undefined, type: RelationshipType.incoming };
var outgoing_relationship = { id, nickname: undefined, type: RelationshipType.outgoing };
if (friendRequest) {
if (friendRequest.type === RelationshipType.blocked) throw new HTTPError("The user blocked you");
// accept friend request
// @ts-ignore
incoming_relationship = friendRequest;
incoming_relationship.type = RelationshipType.friends;
outgoing_relationship.type = RelationshipType.friends;
} else newFriendRelationships.push(incoming_relationship);
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");
} else newUserRelationships.push(outgoing_relationship);
await Promise.all([
UserModel.updateOne({ id: req.user_id }, { "user_data.relationships": newUserRelationships }).exec(),
UserModel.updateOne({ id: friend.id }, { "user_data.relationships": newFriendRelationships }).exec(),
emitEvent({
event: "RELATIONSHIP_ADD",
data: {
...outgoing_relationship,
user: { ...toObject(friend), user_data: undefined }
},
user_id: req.user_id
} as RelationshipAddEvent),
emitEvent({
event: "RELATIONSHIP_ADD",
data: {
...toObject(incoming_relationship),
should_notify: true,
user: { ...toObject(user), user_data: undefined }
},
user_id: id
} as RelationshipAddEvent)
]);
return res.sendStatus(204);
}
router.put("/:id", check({ $type: new Length(Number, 1, 4) }), async (req: Request, res: Response) => {
return await addRelationship(req, res, await UserModel.findOne({ id: req.params.id }), req.body.type);
});
router.post("/", check({ discriminator: String, username: String }), async (req: Request, res: Response) => {
return await addRelationship(
req,
res,
await UserModel.findOne(req.body as { discriminator: string; username: string }).exec(),
req.body.type
);
});
router.delete("/:id", 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 UserModel.findOne({ id: req.user_id }).exec();
if (!user) throw new HTTPError("Invalid token", 400);
const friend = await UserModel.findOne({ id }, userProjection).exec();
if (!friend) throw new HTTPError("User not found", 404);
const relationship = user.user_data.relationships.find((x) => x.id === id);
const friendRequest = friend.user_data.relationships.find((x) => x.id === req.user_id);
if (relationship?.type === RelationshipType.blocked) {
// unblock user
user.user_data.relationships.remove(relationship);
await Promise.all([
user.save(),
emitEvent({ event: "RELATIONSHIP_REMOVE", user_id: req.user_id, data: relationship } as RelationshipRemoveEvent)
]);
return res.sendStatus(204);
}
if (!relationship || !friendRequest) throw new HTTPError("You are not friends with the user", 404);
if (friendRequest.type === RelationshipType.blocked) throw new HTTPError("The user blocked you");
user.user_data.relationships.remove(relationship);
friend.user_data.relationships.remove(friendRequest);
await Promise.all([
user.save(),
friend.save(),
emitEvent({
event: "RELATIONSHIP_REMOVE",
data: relationship,
user_id: req.user_id
} as RelationshipRemoveEvent),
emitEvent({
event: "RELATIONSHIP_REMOVE",
data: friendRequest,
user_id: id
} as RelationshipRemoveEvent)
]);
return res.sendStatus(204);
});
export default router;
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