restructure to single project

1 files changed, 204 insertions, 0 deletions

diff --git a/src/api/routes/users/@me/relationships.ts b/src/api/routes/users/@me/relationships.ts
new file mode 100644
index 00000000..f7464b99
--- /dev/null
+++ b/src/api/routes/users/@me/relationships.ts
@@ -0,0 +1,204 @@
+import {
+	RelationshipAddEvent,
+	User,
+	PublicUserProjection,
+	RelationshipType,
+	RelationshipRemoveEvent,
+	emitEvent,
+	Relationship,
+	Config
+} from "@fosscord/util";
+import { Router, Response, Request } from "express";
+import { HTTPError } from "@fosscord/util";
+import { DiscordApiErrors } from "@fosscord/util";
+import { route } from "@fosscord/api";
+import { OrmUtils } from "@fosscord/util";
+
+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);
+});
+
+router.put("/:id", route({ body: "RelationshipPutSchema" }), async (req: Request, res: Response) => {
+	return await updateRelationship(
+		req,
+		res,
+		await User.findOneOrFail({ where: { id: req.params.id }, relations: ["relationships", "relationships.to"], select: userProjection }),
+		req.body.type ?? RelationshipType.friends
+	);
+});
+
+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({ where: { id: req.user_id }, select: userProjection, relations: ["relationships"] });
+	const friend = await User.findOneOrFail({ where: { 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({
+		where: { id: req.user_id },
+		relations: ["relationships", "relationships.to"],
+		select: userProjection
+	});
+
+	let 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 (OrmUtils.mergeDeep(new Relationship(), { to_id: id, type: RelationshipType.blocked, from_id: req.user_id }) as Relationship).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);
+
+	let incoming_relationship = OrmUtils.mergeDeep(new Relationship(), { nickname: undefined, type: RelationshipType.incoming, to: user, from: friend });
+	let outgoing_relationship = OrmUtils.mergeDeep(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 as any; //TODO: checkme, any cast
+		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 as any; //TODO: checkme, any cast
+		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);
+}