Add incoming Like federation

database/entities/Like.ts

@@ -2,6 +2,9 @@
 import type { Like as LysandLike } from "~types/lysand/Object";
 import { getConfig } from "@config";
 import type { Like } from "@prisma/client";
+import { client } from "~database/datasource";
+import type { UserWithRelations } from "./User";
+import type { StatusWithRelations } from "./Status";
 
 /**
  * Represents a Like entity in the database.
@@ -17,3 +20,29 @@ export const toLysand = (like: Like): LysandLike => {
 		uri: `${getConfig().http.base_url}/actions/${like.id}`,
 	};
 };
+
+export const createLike = async (
+	user: UserWithRelations,
+	status: StatusWithRelations
+) => {
+	await client.like.create({
+		data: {
+			likedId: status.id,
+			likerId: user.id,
+		},
+	});
+
+	if (status.author.instanceId === user.instanceId) {
+		// Notify the user that their post has been favourited
+		await client.notification.create({
+			data: {
+				accountId: user.id,
+				type: "favourite",
+				notifiedId: status.authorId,
+				statusId: status.id,
+			},
+		});
+	} else {
+		// TODO: Add database jobs for federating this
+	}
+};