From ae41139ad804feccfe1cfbd0ccfcff3e77e27294 Mon Sep 17 00:00:00 2001
From: Jesse Wierzbinski <contact@cpluspatch.com>
Date: Thu, 23 Nov 2023 08:43:56 -1000
Subject: [PATCH] Add incoming Like federation

---
 database/entities/Like.ts                    | 29 ++++++++++++++++++++
 server/api/api/v1/statuses/[id]/favourite.ts |  8 ++----
 server/api/users/[uuid]/inbox/index.ts       | 17 ++++++++++++
 3 files changed, 48 insertions(+), 6 deletions(-)

diff --git a/database/entities/Like.ts b/database/entities/Like.ts
index d173aef1..70ecc929 100644
--- a/database/entities/Like.ts
+++ b/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
+	}
+};
diff --git a/server/api/api/v1/statuses/[id]/favourite.ts b/server/api/api/v1/statuses/[id]/favourite.ts
index 5341fd43..d1f8c39a 100644
--- a/server/api/api/v1/statuses/[id]/favourite.ts
+++ b/server/api/api/v1/statuses/[id]/favourite.ts
@@ -3,6 +3,7 @@ import { applyConfig } from "@api";
 import { errorResponse, jsonResponse } from "@response";
 import type { MatchedRoute } from "bun";
 import { client } from "~database/datasource";
+import { createLike } from "~database/entities/Like";
 import {
 	isViewableByUser,
 	statusAndUserRelations,
@@ -54,12 +55,7 @@ export default async (
 	});
 
 	if (!existingLike) {
-		await client.like.create({
-			data: {
-				likedId: status.id,
-				likerId: user.id,
-			},
-		});
+		await createLike(user, status);
 	}
 
 	return jsonResponse({
diff --git a/server/api/users/[uuid]/inbox/index.ts b/server/api/users/[uuid]/inbox/index.ts
index daea01c0..8903d522 100644
--- a/server/api/users/[uuid]/inbox/index.ts
+++ b/server/api/users/[uuid]/inbox/index.ts
@@ -7,6 +7,7 @@ import { errorResponse, jsonResponse } from "@response";
 import type { MatchedRoute } from "bun";
 import { client } from "~database/datasource";
 import { parseEmojis } from "~database/entities/Emoji";
+import { createLike } from "~database/entities/Like";
 import { createFromObject } from "~database/entities/Object";
 import {
 	createNewStatus,
@@ -16,6 +17,7 @@ import {
 import { parseMentionsUris, userRelations } from "~database/entities/User";
 import type {
 	Announce,
+	Like,
 	LysandAction,
 	LysandPublication,
 	Patch,
@@ -250,8 +252,23 @@ export default async (
 			break;
 		}
 		case "Like": {
+			const like = body as Like;
 			// Store the object in the LysandObject table
 			await createFromObject(body);
+
+			const likedStatus = await client.status.findUnique({
+				where: {
+					uri: like.object,
+				},
+				include: statusAndUserRelations,
+			});
+
+			if (!likedStatus) {
+				return errorResponse("Status not found", 404);
+			}
+
+			await createLike(author, likedStatus);
+
 			break;
 		}
 		case "Dislike": {