feat(plugin): RelationshipNotifier (#450)

Co-authored-by: Ven <vendicated@riseup.net>

src/plugins/relationshipNotifier/functions.ts

@@ -0,0 +1,87 @@
+/*
+ * Vencord, a modification for Discord's desktop app
+ * Copyright (c) 2023 Vendicated and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import { UserUtils } from "@webpack/common";
+
+import settings from "./settings";
+import { ChannelDelete, ChannelType, GuildDelete, RelationshipRemove, RelationshipType } from "./types";
+import { deleteGroup, deleteGuild, getGroup, getGuild, notify } from "./utils";
+
+let manuallyRemovedFriend: string | undefined;
+let manuallyRemovedGuild: string | undefined;
+let manuallyRemovedGroup: string | undefined;
+
+export const removeFriend = (id: string) => manuallyRemovedFriend = id;
+export const removeGuild = (id: string) => manuallyRemovedGuild = id;
+export const removeGroup = (id: string) => manuallyRemovedGroup = id;
+
+export async function onRelationshipRemove({ relationship: { type, id } }: RelationshipRemove) {
+    if (manuallyRemovedFriend === id) {
+        manuallyRemovedFriend = undefined;
+        return;
+    }
+
+    const user = await UserUtils.fetchUser(id)
+        .catch(() => null);
+    if (!user) return;
+
+    switch (type) {
+        case RelationshipType.FRIEND:
+            if (settings.store.friends)
+                notify(`${user.tag} removed you as a friend.`, user.getAvatarURL(undefined, undefined, false));
+            break;
+        case RelationshipType.FRIEND_REQUEST:
+            if (settings.store.friendRequestCancels)
+                notify(`A friend request from ${user.tag} has been removed.`, user.getAvatarURL(undefined, undefined, false));
+            break;
+    }
+}
+
+export function onGuildDelete({ guild: { id, unavailable } }: GuildDelete) {
+    if (!settings.store.servers) return;
+    if (unavailable) return;
+
+    if (manuallyRemovedGuild === id) {
+        deleteGuild(id);
+        manuallyRemovedGuild = undefined;
+        return;
+    }
+
+    const guild = getGuild(id);
+    if (guild) {
+        deleteGuild(id);
+        notify(`You were removed from the server ${guild.name}.`, guild.iconURL);
+    }
+}
+
+export function onChannelDelete({ channel: { id, type } }: ChannelDelete) {
+    if (!settings.store.groups) return;
+    if (type !== ChannelType.GROUP_DM) return;
+
+    if (manuallyRemovedGroup === id) {
+        deleteGroup(id);
+        manuallyRemovedGroup = undefined;
+        return;
+    }
+
+    const group = getGroup(id);
+    if (group) {
+        deleteGroup(id);
+        notify(`You were removed from the group ${group.name}.`, group.iconURL);
+    }
+}