Rename files

ts/util/whatTypeOfConversation.dom.ts

@@ -0,0 +1,106 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { ConversationAttributesType } from '../model-types.d.ts';
+import type { ConversationType } from '../state/ducks/conversations.preload.js';
+import * as Bytes from '../Bytes.std.js';
+import { createLogger } from '../logging/log.std.js';
+import { ID_V1_LENGTH, ID_LENGTH } from '../types/groups.std.js';
+
+const log = createLogger('whatTypeOfConversation');
+
+export enum ConversationTypes {
+  Me = 'Me',
+  Direct = 'Direct',
+  GroupV1 = 'GroupV1',
+  GroupV2 = 'GroupV2',
+}
+
+export function isDirectConversation(
+  conversationAttrs:
+    | Pick<ConversationAttributesType, 'type'>
+    | Pick<ConversationType, 'type'>
+): boolean {
+  return (
+    conversationAttrs.type === 'private' || conversationAttrs.type === 'direct'
+  );
+}
+
+export function isMe(
+  conversationAttrs: Pick<ConversationAttributesType, 'e164' | 'serviceId'>
+): boolean {
+  const { e164, serviceId } = conversationAttrs;
+  const us = window.ConversationController.getOurConversation();
+  const ourNumber = us?.get('e164');
+  const ourAci = us?.get('serviceId');
+  return Boolean(
+    (e164 && e164 === ourNumber) || (serviceId && serviceId === ourAci)
+  );
+}
+
+export function isGroup(
+  conversationAttrs: Pick<
+    ConversationAttributesType,
+    'groupId' | 'groupVersion'
+  >
+): boolean {
+  return isGroupV2(conversationAttrs) || isGroupV1(conversationAttrs);
+}
+
+export function isGroupV1(
+  conversationAttrs: Pick<ConversationAttributesType, 'groupId'>
+): boolean {
+  const { groupId } = conversationAttrs;
+  if (!groupId) {
+    return false;
+  }
+
+  const buffer = Bytes.fromBinary(groupId);
+  return buffer.byteLength === ID_V1_LENGTH;
+}
+
+export function isGroupV2(
+  conversationAttrs: Pick<
+    ConversationAttributesType,
+    'groupId' | 'groupVersion'
+  >
+): boolean {
+  const { groupId, groupVersion = 0 } = conversationAttrs;
+  if (!groupId) {
+    return false;
+  }
+
+  try {
+    return (
+      groupVersion === 2 && Bytes.fromBase64(groupId).byteLength === ID_LENGTH
+    );
+  } catch (error) {
+    log.error('isGroupV2: Failed to process groupId in base64!');
+    return false;
+  }
+}
+
+export function typeofConversation(
+  conversationAttrs: Pick<
+    ConversationAttributesType,
+    'type' | 'e164' | 'serviceId' | 'groupId' | 'groupVersion'
+  >
+): ConversationTypes | undefined {
+  if (isMe(conversationAttrs)) {
+    return ConversationTypes.Me;
+  }
+
+  if (isDirectConversation(conversationAttrs)) {
+    return ConversationTypes.Direct;
+  }
+
+  if (isGroupV2(conversationAttrs)) {
+    return ConversationTypes.GroupV2;
+  }
+
+  if (isGroupV1(conversationAttrs)) {
+    return ConversationTypes.GroupV1;
+  }
+
+  return undefined;
+}