feat(PlatformIndicators): add indicator to messages (#343)

src/api/MessageDecorations.ts

@@ -0,0 +1,63 @@
+/*
+ * Vencord, a modification for Discord's desktop app
+ * Copyright (c) 2022 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 { Channel, Message } from "discord-types/general/index.js";
+
+interface DecorationProps {
+    author: {
+        /**
+         * Will be username if the user has no nickname
+         */
+        nick: string;
+        iconRoleId: string;
+        guildMemberAvatar: string;
+        colorRoleName: string;
+        colorString: string;
+    };
+    channel: Channel;
+    compact: boolean;
+    decorations: {
+        /**
+         * Element for the [BOT] tag if there is one
+         */
+        0: JSX.Element | null;
+        /**
+         * Other decorations (including ones added with this api)
+         */
+        1: JSX.Element[];
+    };
+    message: Message;
+    [key: string]: any;
+}
+export type Decoration = (props: DecorationProps) => JSX.Element | null;
+
+export const decorations = new Map<string, Decoration>();
+
+export function addDecoration(identifier: string, decoration: Decoration) {
+    decorations.set(identifier, decoration);
+}
+
+export function removeDecoration(identifier: string) {
+    decorations.delete(identifier);
+}
+
+export function __addDecorationsToMessage(props: DecorationProps): (JSX.Element | null)[] {
+    return [...decorations.values()].map(decoration => {
+        return decoration(props);
+    });
+}