[MIRROR] tgchat part 1 (#7273)

Co-authored-by: Heroman3003 <31296024+Heroman3003@users.noreply.github.com>
Co-authored-by: Selis <selis@xynolabs.com>

tgui/packages/tgui-panel/chat/model.js

@@ -0,0 +1,56 @@
+/**
+ * @file
+ * @copyright 2020 Aleksej Komarov
+ * @license MIT
+ */
+
+import { createUuid } from 'common/uuid';
+import { MESSAGE_TYPES, MESSAGE_TYPE_INTERNAL } from './constants';
+
+export const canPageAcceptType = (page, type) =>
+  type.startsWith(MESSAGE_TYPE_INTERNAL) || page.acceptedTypes[type];
+
+export const createPage = (obj) => {
+  let acceptedTypes = {};
+
+  for (let typeDef of MESSAGE_TYPES) {
+    acceptedTypes[typeDef.type] = !!typeDef.important;
+  }
+
+  return {
+    id: createUuid(),
+    name: 'New Tab',
+    acceptedTypes: acceptedTypes,
+    unreadCount: 0,
+    createdAt: Date.now(),
+    ...obj,
+  };
+};
+
+export const createMainPage = () => {
+  const acceptedTypes = {};
+  for (let typeDef of MESSAGE_TYPES) {
+    acceptedTypes[typeDef.type] = true;
+  }
+  return createPage({
+    name: 'Main',
+    acceptedTypes,
+  });
+};
+
+export const createMessage = (payload) => ({
+  createdAt: Date.now(),
+  ...payload,
+});
+
+export const serializeMessage = (message) => ({
+  type: message.type,
+  text: message.text,
+  html: message.html,
+  times: message.times,
+  createdAt: message.createdAt,
+});
+
+export const isSameMessage = (a, b) =>
+  (typeof a.text === 'string' && a.text === b.text) ||
+  (typeof a.html === 'string' && a.html === b.html);