Improve compatibility for max long values in backups

ts/services/backups/export.ts

@@ -398,7 +398,7 @@ export class BackupExportStream extends Readable {
             name,
             restrictions: toCallLinkRestrictionsProto(restrictions),
             expirationMs: isNumber(expiration)
-              ? Long.fromNumber(expiration)
+              ? getSafeLongFromTimestamp(expiration)
               : null,
           },
         },
@@ -848,7 +848,7 @@ export class BackupExportStream extends Readable {
           ? {
               notRegistered: {
                 unregisteredTimestamp: convo.firstUnregisteredAt
-                  ? Long.fromNumber(convo.firstUnregisteredAt)
+                  ? getSafeLongFromTimestamp(convo.firstUnregisteredAt)
                   : null,
               },
             }
@@ -1323,7 +1323,7 @@ export class BackupExportStream extends Readable {
         groupCall.state = toGroupCallStateProto(callHistory.status);
         groupCall.startedCallTimestamp = Long.fromNumber(callHistory.timestamp);
         if (callHistory.endedTimestamp != null) {
-          groupCall.endedCallTimestamp = Long.fromNumber(
+          groupCall.endedCallTimestamp = getSafeLongFromTimestamp(
             callHistory.endedTimestamp
           );
         }

ts/services/backups/import.ts

@@ -55,7 +55,10 @@ import type {
   QuotedMessageType,
 } from '../../model-types.d';
 import { assertDev, strictAssert } from '../../util/assert';
-import { getTimestampFromLong } from '../../util/timestampLongUtils';
+import {
+  getTimestampFromLong,
+  getTimestampOrUndefinedFromLong,
+} from '../../util/timestampLongUtils';
 import { DurationInSeconds, SECOND } from '../../util/durations';
 import { calculateExpirationTimestamp } from '../../util/expirationTimer';
 import { dropNull } from '../../util/dropNull';
@@ -872,7 +875,9 @@ export class BackupImportStream extends Writable {
     }
 
     if (contact.notRegistered) {
-      const timestamp = contact.notRegistered.unregisteredTimestamp?.toNumber();
+      const timestamp = getTimestampOrUndefinedFromLong(
+        contact.notRegistered.unregisteredTimestamp
+      );
       attrs.discoveredUnregisteredAt = timestamp || this.now;
       attrs.firstUnregisteredAt = timestamp || undefined;
     } else {
@@ -1216,10 +1221,9 @@ export class BackupImportStream extends Writable {
         ? DurationInSeconds.fromMillis(chat.expirationTimerMs.toNumber())
         : undefined;
     conversation.expireTimerVersion = chat.expireTimerVersion || 1;
-    conversation.muteExpiresAt =
+    conversation.muteExpiresAt = getTimestampOrUndefinedFromLong(
-      chat.muteUntilMs && !chat.muteUntilMs.isZero()
+      chat.muteUntilMs
-        ? getTimestampFromLong(chat.muteUntilMs)
+    );
-        : undefined;
     conversation.markedUnread = chat.markedUnread === true;
     conversation.dontNotifyForMentionsIfMuted =
       chat.dontNotifyForMentionsIfMuted === true;
@@ -1298,10 +1302,9 @@ export class BackupImportStream extends Writable {
       chatConvo.unreadCount = (chatConvo.unreadCount ?? 0) + 1;
     }
 
-    const expirationStartTimestamp =
+    const expirationStartTimestamp = getTimestampOrUndefinedFromLong(
-      item.expireStartDate && !item.expireStartDate.isZero()
+      item.expireStartDate
-        ? getTimestampFromLong(item.expireStartDate)
+    );
-        : undefined;
     const expireTimer =
       item.expiresInMs && !item.expiresInMs.isZero()
         ? DurationInSeconds.fromMillis(item.expiresInMs.toNumber())
@@ -2198,7 +2201,7 @@ export class BackupImportStream extends Writable {
         peerId: groupId,
         direction: isRingerMe ? CallDirection.Outgoing : CallDirection.Incoming,
         timestamp: startedCallTimestamp.toNumber(),
-        endedTimestamp: endedCallTimestamp?.toNumber() || null,
+        endedTimestamp: getTimestampFromLong(endedCallTimestamp) || null,
       };
 
       await this.saveCallHistory(callHistory);

ts/test-both/util/timestampLongUtils_test.ts

@@ -7,6 +7,7 @@ import Long from 'long';
 import {
   getSafeLongFromTimestamp,
   getTimestampFromLong,
+  getTimestampOrUndefinedFromLong,
 } from '../../util/timestampLongUtils';
 
 describe('getSafeLongFromTimestamp', () => {
@@ -46,3 +47,27 @@ describe('getTimestampFromLong', () => {
     assert.equal(getTimestampFromLong(null), 0);
   });
 });
+
+describe('getTimestampOrUndefinedFromLong', () => {
+  it('returns undefined when passed 0 Long', () => {
+    assert.equal(
+      getTimestampOrUndefinedFromLong(Long.fromNumber(0)),
+      undefined
+    );
+  });
+
+  it('returns Number.MAX_SAFE_INTEGER when passed Long.MAX_VALUE', () => {
+    assert.equal(
+      getTimestampOrUndefinedFromLong(Long.MAX_VALUE),
+      Number.MAX_SAFE_INTEGER
+    );
+  });
+
+  it('returns a normal number', () => {
+    assert.equal(getTimestampOrUndefinedFromLong(Long.fromNumber(16)), 16);
+  });
+
+  it('returns undefined for null value', () => {
+    assert.equal(getTimestampOrUndefinedFromLong(null), undefined);
+  });
+});

ts/util/timestampLongUtils.ts

@@ -24,3 +24,13 @@ export function getTimestampFromLong(value?: Long | null): number {
 
   return num;
 }
+
+export function getTimestampOrUndefinedFromLong(
+  value?: Long | null
+): number | undefined {
+  if (!value || value.isZero()) {
+    return undefined;
+  }
+
+  return getTimestampFromLong(value);
+}