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//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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#import "OWSGroupsOutputStream.h"
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#import "MIMETypeUtil.h"
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#import "OWSBlockingManager.h"
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#import "OWSDisappearingMessagesConfiguration.h"
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#import "TSGroupModel.h"
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#import "TSGroupThread.h"
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#import <SignalUtilitiesKit/SignalUtilitiesKit-Swift.h>
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NS_ASSUME_NONNULL_BEGIN
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@implementation OWSGroupsOutputStream
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- (void)writeGroup:(TSGroupThread *)groupThread transaction:(YapDatabaseReadTransaction *)transaction
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{
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OWSAssertDebug(groupThread);
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OWSAssertDebug(transaction);
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TSGroupModel *group = groupThread.groupModel;
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OWSAssertDebug(group);
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SNProtoGroupDetailsBuilder *groupBuilder = [SNProtoGroupDetails builderWithId:group.groupId];
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[groupBuilder setName:group.groupName];
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[groupBuilder setMembers:group.groupMemberIds];
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[groupBuilder setAdmins:group.groupAdminIds];
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if ([OWSBlockingManager.sharedManager isGroupIdBlocked:group.groupId]) {
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[groupBuilder setBlocked:YES];
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}
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OWSDisappearingMessagesConfiguration *_Nullable disappearingMessagesConfiguration =
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[OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:groupThread.uniqueId transaction:transaction];
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if (disappearingMessagesConfiguration && disappearingMessagesConfiguration.isEnabled) {
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[groupBuilder setExpireTimer:disappearingMessagesConfiguration.durationSeconds];
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} else {
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// Rather than *not* set the field, we expicitly set it to 0 so desktop
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// can easily distinguish between a modern client declaring "off" vs a
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// legacy client "not specifying".
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[groupBuilder setExpireTimer:0];
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}
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NSError *error;
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NSData *_Nullable groupData = [groupBuilder buildSerializedDataAndReturnError:&error];
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if (error || !groupData) {
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OWSFailDebug(@"could not serialize protobuf: %@", error);
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return;
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}
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uint32_t groupDataLength = (uint32_t)groupData.length;
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[self writeUInt32:groupDataLength];
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[self writeData:groupData];
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}
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@end
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NS_ASSUME_NONNULL_END
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