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diff --git a/lib/shared/message-utils.js b/lib/shared/message-utils.js
--- a/lib/shared/message-utils.js
+++ b/lib/shared/message-utils.js
@@ -47,6 +47,7 @@
} from '../types/minimally-encoded-thread-permissions-types.js';
import type { RawThreadInfo, ThreadInfo } from '../types/thread-types.js';
import type { UserInfos } from '../types/user-types.js';
+import { extractKeyserverIDFromID } from '../utils/action-utils.js';
import {
type EntityText,
ET,
@@ -699,6 +700,25 @@
return !messageSpecs[message.type].canBeRenderedIndependently;
}
+function findNewestMessageTimePerKeyserver(
+ messageInfos: $ReadOnlyArray<RawMessageInfo>,
+): { [keyserverID: string]: number } {
+ const timePerKeyserver: { [keyserverID: string]: number } = {};
+
+ for (const messageInfo of messageInfos) {
+ const keyserverID = extractKeyserverIDFromID(messageInfo.threadID);
+
+ if (
+ !timePerKeyserver[keyserverID] ||
+ timePerKeyserver[keyserverID] < messageInfo.time
+ ) {
+ timePerKeyserver[keyserverID] = messageInfo.time;
+ }
+ }
+
+ return timePerKeyserver;
+}
+
export {
localIDPrefix,
messageKey,
@@ -732,4 +752,5 @@
isInvalidPinSource,
isInvalidPinSourceForThread,
isUnableToBeRenderedIndependently,
+ findNewestMessageTimePerKeyserver,
};
diff --git a/lib/shared/message-utils.test.js b/lib/shared/message-utils.test.js
--- a/lib/shared/message-utils.test.js
+++ b/lib/shared/message-utils.test.js
@@ -4,10 +4,14 @@
isInvalidSidebarSource,
isInvalidPinSource,
isUnableToBeRenderedIndependently,
+ findNewestMessageTimePerKeyserver,
} from './message-utils.js';
import { messageSpecs } from '../shared/messages/message-specs.js';
+import type {
+ RawMessageInfo,
+ RawSidebarSourceMessageInfo,
+} from '../types/message-types';
import { messageTypes } from '../types/message-types-enum.js';
-import type { RawSidebarSourceMessageInfo } from '../types/message-types.js';
import type { RawAddMembersMessageInfo } from '../types/messages/add-members.js';
import type { RawChangeRoleMessageInfo } from '../types/messages/change-role.js';
import type { RawChangeSettingsMessageInfo } from '../types/messages/change-settings.js';
@@ -758,3 +762,41 @@
});
});
});
+
+describe('findNewestMessageTimePerKeyserver', () => {
+ it('should return the time of the newest message for every keyserver', () => {
+ const messages: $ReadOnlyArray<RawMessageInfo> = [
+ {
+ type: 0,
+ threadID: '256|100',
+ creatorID: '256',
+ time: 4,
+ text: 'test',
+ },
+ {
+ type: 0,
+ threadID: '1|100',
+ creatorID: '256',
+ time: 2,
+ text: 'test',
+ },
+ {
+ type: 0,
+ threadID: '1|100',
+ creatorID: '256',
+ time: 3,
+ text: 'test',
+ },
+ {
+ type: 0,
+ threadID: '256|100',
+ creatorID: '256',
+ time: 1,
+ text: 'test',
+ },
+ ];
+
+ const result = { ['256']: 4, ['1']: 3 };
+ expect(findNewestMessageTimePerKeyserver(messages)).toEqual(result);
+ });
+});

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