finished, functional API

src/api/user/pFriend.js

@@ -0,0 +1,29 @@
+export async function pFriend(request, reply, fastify, getUserInfo, getFriend, addFriend) {
+	try {
+		const userId = request.params.userId;
+		if (!request.user) {
+			return reply.code(400).send({ error: "Please specify a user" });
+		}
+		if (request.user !== 'admin' && request.user !== userId) {
+			return reply.code(401).send({ error: "Unauthorized" });
+		}
+		if (!getUserInfo.get(userId)) {
+			return reply.code(404).send({ error: "User does not exist" });
+		}
+		const friendId = request.params.friendId;
+		if (!getUserInfo.get(friendId)) {
+			return reply.code(404).send({ error: "Friend does not exist" });
+		}
+		if (friendId === userId) {
+			return reply.code(400).send({ error: "You can't add yourself :D" });
+		}
+		if (getFriend.get(userId, friendId)) {
+			return reply.code(400).send({ error: "Friend already added" });
+		}
+		addFriend.run(userId, friendId)
+		return reply.code(200).send({ msg: "Friend added successfully" });
+	} catch (err) {
+		fastify.log.error(err);
+		return reply.code(500).send({ error: "Internal server error" });
+	}
+}