Signal-iOS/SignalServiceKit/src/Messages/DeviceSyncing/OWSIncomingSentMessageTranscript.m

//
//  Copyright (c) 2020 Open Whisper Systems. All rights reserved.
//

#import "OWSIncomingSentMessageTranscript.h"
#import "OWSContact.h"
#import "OWSMessageManager.h"
#import "TSContactThread.h"
#import "TSGroupModel.h"
#import "TSGroupThread.h"
#import "TSOutgoingMessage.h"
#import "TSQuotedMessage.h"
#import "TSThread.h"
#import <SignalServiceKit/SignalServiceKit-Swift.h>

NS_ASSUME_NONNULL_BEGIN

@interface OWSIncomingSentMessageTranscript ()

@property (nonatomic, readonly) SSKProtoDataMessage *dataMessage;

@end

#pragma mark -

@implementation OWSIncomingSentMessageTranscript

#pragma mark - Dependencies

+ (TSAccountManager *)tsAccountManager
{
    OWSAssertDebug(SSKEnvironment.shared.tsAccountManager);

    return SSKEnvironment.shared.tsAccountManager;
}

#pragma mark -

- (nullable instancetype)initWithProto:(SSKProtoSyncMessageSent *)sentProto transaction:(SDSAnyWriteTransaction *)transaction
{
    self = [super init];
    if (!self) {
        return self;
    }

    if (sentProto.message == nil) {
        OWSFailDebug(@"Missing message.");
        return nil;
    }
    _dataMessage = sentProto.message;

    if (sentProto.timestamp < 1) {
        OWSFailDebug(@"Sent missing timestamp.");
        return nil;
    }
    _timestamp = sentProto.timestamp;
    _expirationStartedAt = sentProto.expirationStartTimestamp;
    _expirationDuration = _dataMessage.expireTimer;
    _body = _dataMessage.body;
    _dataMessageTimestamp = _dataMessage.timestamp;

    // GroupsV2 TODO: Assert and abort if the group v2 is unknown.
    SSKProtoGroupContext *_Nullable group = _dataMessage.group;
    if (group != nil) {
        if (group.id.length < 1) {
            OWSFailDebug(@"Missing groupId.");
            return nil;
        }
        _groupId = group.id;
        _isGroupUpdate = (group.hasType && group.unwrappedType == SSKProtoGroupContextTypeUpdate);
    } else {
        if (sentProto.destinationAddress == nil) {
            OWSFailDebug(@"Missing destinationAddress.");
            return nil;
        }
        _recipientAddress = sentProto.destinationAddress;
    }
    if (_dataMessage.hasFlags) {
        uint32_t flags = _dataMessage.flags;
        _isExpirationTimerUpdate = (flags & SSKProtoDataMessageFlagsExpirationTimerUpdate) != 0;
        _isEndSessionMessage = (flags & SSKProtoDataMessageFlagsEndSession) != 0;
    }
    _isRecipientUpdate = sentProto.hasIsRecipientUpdate && sentProto.isRecipientUpdate;
    _isViewOnceMessage = _dataMessage.hasIsViewOnce && _dataMessage.isViewOnce;

    if (_dataMessage.hasRequiredProtocolVersion) {
        _requiredProtocolVersion = @(_dataMessage.requiredProtocolVersion);
    }

    if (self.isRecipientUpdate) {
        // Fetch, don't create.  We don't want recipient updates to resurrect messages or threads.
        if (_groupId != nil) {
            _thread = [TSGroupThread fetchWithGroupId:_groupId transaction:transaction];
        } else {
            OWSFailDebug(@"We should never receive a 'recipient update' for messages in contact threads.");
        }
        // Skip the other processing for recipient updates.
    } else {
        if (_groupId != nil) {
            _thread = [TSGroupThread fetchWithGroupId:_groupId transaction:transaction];

            if (_thread == nil) {
                SignalServiceAddress *_Nullable localAddress
                    = OWSIncomingSentMessageTranscript.tsAccountManager.localAddress;
                if (localAddress == nil) {
                    OWSFailDebug(@"Missing localAddress.");
                    return nil;
                }
                NSArray<SignalServiceAddress *> *members = @[ localAddress ];
                NSError *_Nullable groupError;
                // GroupsV2 TODO: Set administrators.
                _thread = [GroupManager upsertExistingGroupWithMembers:members
                                                        administrators:@[]
                                                                  name:nil
                                                            avatarData:nil
                                                               groupId:_groupId
                                                         groupsVersion:GroupsVersionV1
                                                 groupSecretParamsData:nil
                                                     shouldSendMessage:NO
                                              groupUpdateSourceAddress:localAddress
                                                           transaction:transaction
                                                                 error:&groupError]
                              .thread;
                if (groupError != nil || _thread == nil) {
                    OWSFailDebug(@"Could not create group: %@", groupError);
                    return nil;
                }
            }
        } else {
            _thread = [TSContactThread getOrCreateThreadWithContactAddress:_recipientAddress transaction:transaction];
        }

        _quotedMessage =
            [TSQuotedMessage quotedMessageForDataMessage:_dataMessage thread:_thread transaction:transaction];
        _contact = [OWSContacts contactForDataMessage:_dataMessage transaction:transaction];

        NSError *linkPreviewError;
        _linkPreview = [OWSLinkPreview buildValidatedLinkPreviewWithDataMessage:_dataMessage
                                                                           body:_body
                                                                    transaction:transaction
                                                                          error:&linkPreviewError];
        if (linkPreviewError && ![OWSLinkPreview isNoPreviewError:linkPreviewError]) {
            OWSLogError(@"linkPreviewError: %@", linkPreviewError);
        }

        NSError *stickerError;
        _messageSticker = [MessageSticker buildValidatedMessageStickerWithDataMessage:_dataMessage
                                                                          transaction:transaction
                                                                                error:&stickerError];
        if (stickerError && ![MessageSticker isNoStickerError:stickerError]) {
            OWSFailDebug(@"stickerError: %@", stickerError);
        }
    }

    if (sentProto.unidentifiedStatus.count > 0) {
        NSMutableArray<SignalServiceAddress *> *nonUdRecipientAddresses = [NSMutableArray new];
        NSMutableArray<SignalServiceAddress *> *udRecipientAddresses = [NSMutableArray new];
        for (SSKProtoSyncMessageSentUnidentifiedDeliveryStatus *statusProto in sentProto.unidentifiedStatus) {
            if (!statusProto.hasValidDestination) {
                OWSFailDebug(@"Delivery status proto is missing destination.");
                continue;
            }
            if (!statusProto.hasUnidentified) {
                OWSFailDebug(@"Delivery status proto is missing value.");
                continue;
            }
            SignalServiceAddress *recipientAddress = statusProto.destinationAddress;
            if (statusProto.unidentified) {
                [udRecipientAddresses addObject:recipientAddress];
            } else {
                [nonUdRecipientAddresses addObject:recipientAddress];
            }
        }
        _nonUdRecipientAddresses = [nonUdRecipientAddresses copy];
        _udRecipientAddresses = [udRecipientAddresses copy];
    }

    return self;
}

- (NSArray<SSKProtoAttachmentPointer *> *)attachmentPointerProtos
{
    if (self.isGroupUpdate && self.dataMessage.group.avatar) {
        return @[ self.dataMessage.group.avatar ];
    } else {
        return self.dataMessage.attachments;
    }
}

@end

NS_ASSUME_NONNULL_END