Signal-iOS/SignalMessaging/contacts/OWSContactsManager.m
2020-06-24 13:44:26 -03:00

1395 lines
55 KiB
Objective-C

//
// Copyright (c) 2020 Open Whisper Systems. All rights reserved.
//
#import "OWSContactsManager.h"
#import "Environment.h"
#import "OWSFormat.h"
#import "OWSProfileManager.h"
#import "ViewControllerUtils.h"
#import <Contacts/Contacts.h>
#import <PromiseKit/AnyPromise.h>
#import <SignalCoreKit/NSDate+OWS.h>
#import <SignalCoreKit/NSString+OWS.h>
#import <SignalCoreKit/iOSVersions.h>
#import <SignalMessaging/SignalMessaging-Swift.h>
#import <SignalMessaging/UIFont+OWS.h>
#import <SignalServiceKit/ContactsUpdater.h>
#import <SignalServiceKit/NSNotificationCenter+OWS.h>
#import <SignalServiceKit/OWSError.h>
#import <SignalServiceKit/PhoneNumber.h>
#import <SignalServiceKit/SignalAccount.h>
#import <SignalServiceKit/SignalServiceKit-Swift.h>
NS_ASSUME_NONNULL_BEGIN
NSString *const OWSContactsManagerSignalAccountsDidChangeNotification
= @"OWSContactsManagerSignalAccountsDidChangeNotification";
NSString *const OWSContactsManagerCollection = @"OWSContactsManagerCollection";
NSString *const OWSContactsManagerKeyLastKnownContactPhoneNumbers
= @"OWSContactsManagerKeyLastKnownContactPhoneNumbers";
NSString *const OWSContactsManagerKeyNextFullIntersectionDate = @"OWSContactsManagerKeyNextFullIntersectionDate2";
@interface OWSContactsManager () <SystemContactsFetcherDelegate>
@property (nonatomic) BOOL isContactsUpdateInFlight;
// This reflects the contents of the device phone book and includes
// contacts that do not correspond to any signal account.
@property (atomic) NSArray<Contact *> *allContacts;
@property (atomic) NSDictionary<NSString *, Contact *> *allContactsMap;
@property (atomic) NSArray<SignalAccount *> *signalAccounts;
@property (nonatomic, readonly) SystemContactsFetcher *systemContactsFetcher;
@property (nonatomic, readonly) NSCache<NSString *, CNContact *> *cnContactCache;
@property (nonatomic, readonly) NSCache<NSString *, UIImage *> *cnContactAvatarCache;
@property (nonatomic, readonly) NSCache<SignalServiceAddress *, NSString *> *colorNameCache;
@property (atomic) BOOL isSetup;
@end
#pragma mark -
@implementation OWSContactsManager
#pragma mark - Dependencies
- (SDSDatabaseStorage *)databaseStorage
{
return SDSDatabaseStorage.shared;
}
- (OWSProfileManager *)profileManager
{
return OWSProfileManager.sharedManager;
}
- (SignalAccountReadCache *)signalAccountReadCache
{
return SSKEnvironment.shared.modelReadCaches.signalAccountReadCache;
}
#pragma mark -
- (id)init
{
self = [super init];
if (!self) {
return self;
}
_keyValueStore = [[SDSKeyValueStore alloc] initWithCollection:OWSContactsManagerCollection];
// TODO: We need to configure the limits of this cache.
_avatarCache = [ImageCache new];
_colorNameCache = [NSCache new];
_allContacts = @[];
_allContactsMap = @{};
_signalAccounts = @[];
_systemContactsFetcher = [SystemContactsFetcher new];
_systemContactsFetcher.delegate = self;
_cnContactCache = [NSCache new];
_cnContactCache.countLimit = 50;
_cnContactAvatarCache = [NSCache new];
_cnContactAvatarCache.countLimit = 25;
OWSSingletonAssert();
[AppReadiness runNowOrWhenAppWillBecomeReady:^{
[self setup];
[self startObserving];
}];
return self;
}
- (void)setup {
__block NSMutableArray<SignalAccount *> *signalAccounts;
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
NSUInteger signalAccountCount = [SignalAccount anyCountWithTransaction:transaction];
OWSLogInfo(@"loading %lu signal accounts from cache.", (unsigned long)signalAccountCount);
signalAccounts = [[NSMutableArray alloc] initWithCapacity:signalAccountCount];
[SignalAccount anyEnumerateWithTransaction:transaction
block:^(SignalAccount *signalAccount, BOOL *stop) {
[signalAccounts addObject:signalAccount];
}];
}];
[self updateSignalAccounts:signalAccounts shouldSetHasLoadedContacts:NO];
}
- (dispatch_queue_t)intersectionQueue
{
static dispatch_queue_t _serialQueue;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_serialQueue = dispatch_queue_create("org.whispersystems.contacts.intersectionQueue", DISPATCH_QUEUE_SERIAL);
});
return _serialQueue;
}
#pragma mark - System Contact Fetching
// Request contacts access if you haven't asked recently.
- (void)requestSystemContactsOnce
{
[self requestSystemContactsOnceWithCompletion:nil];
}
- (void)requestSystemContactsOnceWithCompletion:(void (^_Nullable)(NSError *_Nullable error))completion
{
[self.systemContactsFetcher requestOnceWithCompletion:completion];
}
- (void)fetchSystemContactsOnceIfAlreadyAuthorized
{
[self.systemContactsFetcher fetchOnceIfAlreadyAuthorized];
}
- (AnyPromise *)userRequestedSystemContactsRefresh
{
return [AnyPromise promiseWithResolverBlock:^(PMKResolver resolve) {
[self.systemContactsFetcher userRequestedRefreshWithCompletion:^(NSError *error){
if (error) {
OWSLogError(@"refreshing contacts failed with error: %@", error);
}
resolve(error ?: @(1));
}];
}];
}
- (BOOL)isSystemContactsAuthorized
{
return self.systemContactsFetcher.isAuthorized;
}
- (BOOL)isSystemContactsDenied
{
return self.systemContactsFetcher.isDenied;
}
- (BOOL)systemContactsHaveBeenRequestedAtLeastOnce
{
return self.systemContactsFetcher.systemContactsHaveBeenRequestedAtLeastOnce;
}
- (BOOL)supportsContactEditing
{
return self.systemContactsFetcher.supportsContactEditing;
}
#pragma mark - CNContacts
- (nullable CNContact *)cnContactWithId:(nullable NSString *)contactId
{
OWSAssertDebug(self.cnContactCache);
if (!contactId) {
return nil;
}
CNContact *_Nullable cnContact;
@synchronized(self.cnContactCache) {
cnContact = [self.cnContactCache objectForKey:contactId];
if (!cnContact) {
cnContact = [self.systemContactsFetcher fetchCNContactWithContactId:contactId];
if (cnContact) {
[self.cnContactCache setObject:cnContact forKey:contactId];
}
}
}
return cnContact;
}
- (nullable NSData *)avatarDataForCNContactId:(nullable NSString *)contactId
{
// Don't bother to cache avatar data.
CNContact *_Nullable cnContact = [self cnContactWithId:contactId];
return [Contact avatarDataForCNContact:cnContact];
}
- (nullable UIImage *)avatarImageForCNContactId:(nullable NSString *)contactId
{
OWSAssertDebug(self.cnContactAvatarCache);
if (!contactId) {
return nil;
}
UIImage *_Nullable avatarImage;
@synchronized(self.cnContactAvatarCache) {
avatarImage = [self.cnContactAvatarCache objectForKey:contactId];
if (!avatarImage) {
NSData *_Nullable avatarData = [self avatarDataForCNContactId:contactId];
if (avatarData && [avatarData ows_isValidImage]) {
avatarImage = [UIImage imageWithData:avatarData];
}
if (avatarImage) {
[self.cnContactAvatarCache setObject:avatarImage forKey:contactId];
}
}
}
return avatarImage;
}
#pragma mark - SystemContactsFetcherDelegate
- (void)systemContactsFetcher:(SystemContactsFetcher *)systemsContactsFetcher
updatedContacts:(NSArray<Contact *> *)contacts
isUserRequested:(BOOL)isUserRequested
{
BOOL shouldClearStaleCache;
// On iOS 11.2, only clear the contacts cache if the fetch was initiated by the user.
// iOS 11.2 rarely returns partial fetches and we use the cache to prevent contacts from
// periodically disappearing from the UI.
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(11, 2) && !SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(11, 3)) {
shouldClearStaleCache = isUserRequested;
} else {
shouldClearStaleCache = YES;
}
[self updateWithContacts:contacts
didLoad:YES
isUserRequested:isUserRequested
shouldClearStaleCache:shouldClearStaleCache];
}
- (void)systemContactsFetcher:(SystemContactsFetcher *)systemContactsFetcher
hasAuthorizationStatus:(enum ContactStoreAuthorizationStatus)authorizationStatus
{
if (authorizationStatus == ContactStoreAuthorizationStatusRestricted
|| authorizationStatus == ContactStoreAuthorizationStatusDenied) {
// Clear the contacts cache if access to the system contacts is revoked.
[self updateWithContacts:@[] didLoad:NO isUserRequested:NO shouldClearStaleCache:YES];
}
}
#pragma mark - Intersection
- (NSSet<NSString *> *)phoneNumbersForIntersectionWithContacts:(NSArray<Contact *> *)contacts
{
OWSAssertDebug(contacts);
NSMutableSet<NSString *> *phoneNumbers = [NSMutableSet set];
for (Contact *contact in contacts) {
[phoneNumbers addObjectsFromArray:contact.e164sForIntersection];
}
return [phoneNumbers copy];
}
- (void)intersectContacts:(NSArray<Contact *> *)contacts
isUserRequested:(BOOL)isUserRequested
completion:(void (^)(NSError *_Nullable error))completion
{
OWSAssertDebug(contacts);
OWSAssertDebug(completion);
OWSAssertIsOnMainThread();
dispatch_async(self.intersectionQueue, ^{
__block BOOL isFullIntersection = YES;
__block BOOL isRegularlyScheduledRun = NO;
__block NSSet<NSString *> *allContactPhoneNumbers;
__block NSSet<NSString *> *phoneNumbersForIntersection;
__block NSMutableSet<SignalRecipient *> *existingRegisteredRecipients = [NSMutableSet new];
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
// Contact updates initiated by the user should always do a full intersection.
if (!isUserRequested) {
NSDate *_Nullable nextFullIntersectionDate =
[self.keyValueStore getDate:OWSContactsManagerKeyNextFullIntersectionDate transaction:transaction];
if (nextFullIntersectionDate && [nextFullIntersectionDate isAfterNow]) {
isFullIntersection = NO;
} else {
isRegularlyScheduledRun = YES;
}
}
[SignalRecipient anyEnumerateWithTransaction:transaction
block:^(SignalRecipient *signalRecipient, BOOL *stop) {
if (signalRecipient.devices.count > 0) {
[existingRegisteredRecipients addObject:signalRecipient];
}
}];
allContactPhoneNumbers = [self phoneNumbersForIntersectionWithContacts:contacts];
phoneNumbersForIntersection = allContactPhoneNumbers;
if (!isFullIntersection) {
// Do a "delta" intersection instead of a "full" intersection:
// only intersect new contacts which were not in the last successful
// "full" intersection.
NSSet<NSString *> *_Nullable lastKnownContactPhoneNumbers =
[self.keyValueStore getObjectForKey:OWSContactsManagerKeyLastKnownContactPhoneNumbers
transaction:transaction];
if (lastKnownContactPhoneNumbers) {
// Do a "delta" sync which only intersects phone numbers not included
// in the last full intersection.
NSMutableSet<NSString *> *newPhoneNumbers = [allContactPhoneNumbers mutableCopy];
[newPhoneNumbers minusSet:lastKnownContactPhoneNumbers];
phoneNumbersForIntersection = newPhoneNumbers;
} else {
// Without a list of "last known" contact phone numbers, we'll have to do a full intersection.
isFullIntersection = YES;
}
}
}];
OWSAssertDebug(phoneNumbersForIntersection);
if (phoneNumbersForIntersection.count < 1) {
OWSLogInfo(@"Skipping intersection; no contacts to intersect.");
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
completion(nil);
});
return;
} else if (isFullIntersection) {
OWSLogInfo(@"Doing full intersection with %zu contacts.", phoneNumbersForIntersection.count);
} else {
OWSLogInfo(@"Doing delta intersection with %zu contacts.", phoneNumbersForIntersection.count);
}
[self intersectContacts:phoneNumbersForIntersection
retryDelaySeconds:1.0
success:^(NSSet<SignalRecipient *> *registeredRecipients) {
if (isRegularlyScheduledRun) {
NSMutableSet<SignalRecipient *> *newSignalRecipients = [registeredRecipients mutableCopy];
[newSignalRecipients minusSet:existingRegisteredRecipients];
if (newSignalRecipients.count == 0) {
OWSLogInfo(@"No new recipients.");
} else {
__block NSSet<NSString *> *_Nullable lastKnownContactPhoneNumbers;
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
lastKnownContactPhoneNumbers =
[self.keyValueStore getObjectForKey:OWSContactsManagerKeyLastKnownContactPhoneNumbers
transaction:transaction];
}];
if (lastKnownContactPhoneNumbers != nil && lastKnownContactPhoneNumbers.count > 0) {
[OWSNewAccountDiscovery.shared discoveredNewRecipients:newSignalRecipients];
} else {
OWSLogInfo(@"skipping new recipient notification for first successful contact sync.");
}
}
}
[self markIntersectionAsComplete:allContactPhoneNumbers isFullIntersection:isFullIntersection];
completion(nil);
}
failure:^(NSError *error) {
completion(error);
}];
});
}
- (void)markIntersectionAsComplete:(NSSet<NSString *> *)phoneNumbersForIntersection
isFullIntersection:(BOOL)isFullIntersection
{
OWSAssertDebug(phoneNumbersForIntersection.count > 0);
dispatch_async(self.intersectionQueue, ^{
DatabaseStorageWrite(self.databaseStorage, ^(SDSAnyWriteTransaction *transaction) {
if (isFullIntersection) {
// replace last known numbers
[self.keyValueStore setObject:phoneNumbersForIntersection
key:OWSContactsManagerKeyLastKnownContactPhoneNumbers
transaction:transaction];
const NSUInteger contactCount = phoneNumbersForIntersection.count;
const NSUInteger minIntersectionsPerDay = 1;
const NSUInteger maxIntersectionsPerDay = 4;
// Try to target half the known limit, reserving some capacity for manual refreshes
// and manual lookup-by-phonenumber.
const NSUInteger maxContactsPerDay = 10000;
NSUInteger fullIntersectionsPerDay;
if (contactCount > 0) {
fullIntersectionsPerDay = maxContactsPerDay / contactCount;
fullIntersectionsPerDay = MAX(minIntersectionsPerDay, fullIntersectionsPerDay);
fullIntersectionsPerDay = MIN(maxIntersectionsPerDay, fullIntersectionsPerDay);
} else {
fullIntersectionsPerDay = maxIntersectionsPerDay;
}
const NSTimeInterval nextFullIntersectionInterval = kDayInterval / fullIntersectionsPerDay;
NSDate *nextFullIntersectionDate = [NSDate dateWithTimeIntervalSinceNow:nextFullIntersectionInterval];
OWSLogDebug(@"contactCount: %lu, fullIntersectionsPerDay: %lu, nextFullIntersectionInterval: %lu, "
@"currentDate: %@, nextFullIntersectionDate: %@",
(unsigned long)contactCount,
(unsigned long)fullIntersectionsPerDay,
(unsigned long)nextFullIntersectionInterval,
[NSDate new],
nextFullIntersectionDate);
[self.keyValueStore setDate:nextFullIntersectionDate
key:OWSContactsManagerKeyNextFullIntersectionDate
transaction:transaction];
} else {
NSSet<NSString *> *_Nullable lastKnownContactPhoneNumbers =
[self.keyValueStore getObjectForKey:OWSContactsManagerKeyLastKnownContactPhoneNumbers
transaction:transaction];
// If a user has a "flaky" address book, perhaps a network linked directory that
// goes in and out of existence, we could get thrashing between what the last
// known set is, causing us to re-intersect contacts many times within the debounce
// interval. So while we're doing incremental intersections, we *accumulate*,
// rather than replace the set of recently intersected contacts.
if ([lastKnownContactPhoneNumbers isKindOfClass:NSSet.class]) {
NSSet<NSString *> *_Nullable accumulatedSet =
[lastKnownContactPhoneNumbers setByAddingObjectsFromSet:phoneNumbersForIntersection];
// replace last known numbers
[self.keyValueStore setObject:accumulatedSet
key:OWSContactsManagerKeyLastKnownContactPhoneNumbers
transaction:transaction];
} else {
// replace last known numbers
[self.keyValueStore setObject:phoneNumbersForIntersection
key:OWSContactsManagerKeyLastKnownContactPhoneNumbers
transaction:transaction];
}
}
});
});
}
- (void)intersectContacts:(NSSet<NSString *> *)phoneNumbers
retryDelaySeconds:(double)retryDelaySeconds
success:(void (^)(NSSet<SignalRecipient *> *))successParameter
failure:(void (^)(NSError *))failureParameter
{
OWSAssertDebug(phoneNumbers.count > 0);
OWSAssertDebug(retryDelaySeconds > 0);
OWSAssertDebug(successParameter);
OWSAssertDebug(failureParameter);
void (^success)(NSArray<SignalRecipient *> *) = ^(NSArray<SignalRecipient *> *registeredRecipients) {
OWSLogInfo(@"Successfully intersected contacts.");
successParameter([NSSet setWithArray:registeredRecipients]);
};
void (^failure)(NSError *) = ^(NSError *error) {
if ([error.domain isEqualToString:OWSSignalServiceKitErrorDomain]
&& error.code == OWSErrorCodeContactsUpdaterRateLimit) {
OWSLogError(@"Contact intersection hit rate limit with error: %@", error);
failureParameter(error);
return;
}
OWSLogWarn(@"Failed to intersect contacts with error: %@. Rescheduling", error);
// Retry with exponential backoff.
//
// TODO: Abort if another contact intersection succeeds in the meantime.
dispatch_after(
dispatch_time(DISPATCH_TIME_NOW, (int64_t)(retryDelaySeconds * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self intersectContacts:phoneNumbers
retryDelaySeconds:retryDelaySeconds * 2.0
success:successParameter
failure:failureParameter];
});
};
[[ContactsUpdater sharedUpdater] lookupIdentifiers:phoneNumbers.allObjects success:success failure:failure];
}
- (void)startObserving
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(otherUsersProfileWillChange:)
name:kNSNotificationNameOtherUsersProfileWillChange
object:nil];
}
- (void)otherUsersProfileWillChange:(NSNotification *)notification
{
OWSAssertIsOnMainThread();
[AppReadiness runNowOrWhenAppDidBecomeReady:^{
SignalServiceAddress *address = notification.userInfo[kNSNotificationKey_ProfileAddress];
OWSAssertDebug(address.isValid);
[self.avatarCache removeAllImagesForKey:address.stringForDisplay];
}];
}
- (void)updateWithContacts:(NSArray<Contact *> *)contacts
didLoad:(BOOL)didLoad
isUserRequested:(BOOL)isUserRequested
shouldClearStaleCache:(BOOL)shouldClearStaleCache
{
dispatch_async(self.intersectionQueue, ^{
NSMutableArray<Contact *> *allContacts = [contacts mutableCopy];
NSMutableDictionary<NSString *, Contact *> *allContactsMap = [NSMutableDictionary new];
for (Contact *contact in contacts) {
for (PhoneNumber *phoneNumber in contact.parsedPhoneNumbers) {
NSString *phoneNumberE164 = phoneNumber.toE164;
// Ignore any system contact records for the local contact.
// For the local user we never want to show the avatar /
// name that you have entered for yourself in your system
// contacts. Instead, we always want to display your profile
// name and avatar.
BOOL isLocalContact = [phoneNumberE164 isEqualToString:TSAccountManager.localNumber];
if (isLocalContact) {
[allContacts removeObject:contact];
} else if (phoneNumberE164.length > 0) {
allContactsMap[phoneNumberE164] = contact;
}
}
}
NSArray<Contact *> *sortedContacts = [allContacts
sortedArrayUsingComparator:[Contact comparatorSortingNamesByFirstThenLast:self.shouldSortByGivenName]];
dispatch_async(dispatch_get_main_queue(), ^{
self.allContacts = sortedContacts;
self.allContactsMap = [allContactsMap copy];
[self.cnContactCache removeAllObjects];
[self.cnContactAvatarCache removeAllObjects];
[self.avatarCache removeAllImages];
[self intersectContacts:allContacts
isUserRequested:isUserRequested
completion:^(NSError *_Nullable error) {
// TODO: Should we do this on error?
[self buildSignalAccountsAndClearStaleCache:shouldClearStaleCache didLoad:didLoad];
}];
});
});
}
- (void)buildSignalAccountsAndClearStaleCache:(BOOL)shouldClearStaleCache didLoad:(BOOL)didLoad
{
dispatch_async(self.intersectionQueue, ^{
NSMutableArray<SignalAccount *> *systemContactsSignalAccounts = [NSMutableArray new];
NSArray<Contact *> *contacts = self.allContacts;
// We use a transaction only to load the SignalRecipients for each contact,
// in order to avoid database deadlock.
NSMutableDictionary<NSString *, NSArray<SignalRecipient *> *> *contactIdToSignalRecipientsMap =
[NSMutableDictionary new];
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
for (Contact *contact in contacts) {
NSArray<SignalRecipient *> *signalRecipients = [contact signalRecipientsWithTransaction:transaction];
contactIdToSignalRecipientsMap[contact.uniqueId] = signalRecipients;
}
}];
NSMutableSet<SignalServiceAddress *> *seenAddresses = [NSMutableSet new];
for (Contact *contact in contacts) {
NSArray<SignalRecipient *> *signalRecipients = contactIdToSignalRecipientsMap[contact.uniqueId];
for (SignalRecipient *signalRecipient in [signalRecipients sortedArrayUsingSelector:@selector((compare:))]) {
if ([seenAddresses containsObject:signalRecipient.address]) {
OWSLogDebug(@"Ignoring duplicate contact: %@, %@", signalRecipient.address, contact.fullName);
continue;
}
[seenAddresses addObject:signalRecipient.address];
NSString *_Nullable multipleAccountLabelText = nil;
if (signalRecipients.count > 1) {
multipleAccountLabelText = [[self class] accountLabelForContact:contact
address:signalRecipient.address];
}
SignalAccount *signalAccount = [[SignalAccount alloc] initWithSignalRecipient:signalRecipient
contact:contact
multipleAccountLabelText:multipleAccountLabelText];
[signalAccount tryToCacheContactAvatarData];
[systemContactsSignalAccounts addObject:signalAccount];
}
}
NSMutableArray<SignalAccount *> *persistedSignalAccounts = [NSMutableArray new];
NSMutableDictionary<SignalServiceAddress *, SignalAccount *> *persistedSignalAccountMap =
[NSMutableDictionary new];
NSMutableDictionary<SignalServiceAddress *, SignalAccount *> *signalAccountsToKeep = [NSMutableDictionary new];
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
[SignalAccount
anyEnumerateWithTransaction:transaction
block:^(SignalAccount *signalAccount, BOOL *stop) {
persistedSignalAccountMap[signalAccount.recipientAddress] = signalAccount;
[persistedSignalAccounts addObject:signalAccount];
if (signalAccount.contact.isFromContactSync) {
signalAccountsToKeep[signalAccount.recipientAddress] = signalAccount;
}
}];
}];
NSMutableArray<SignalAccount *> *signalAccountsToUpsert = [NSMutableArray new];
for (SignalAccount *signalAccount in systemContactsSignalAccounts) {
if (signalAccountsToKeep[signalAccount.recipientAddress] != nil
&& !signalAccountsToKeep[signalAccount.recipientAddress].contact.isFromContactSync) {
OWSFailDebug(@"Ignoring redundant signal account: %@", signalAccount.recipientAddress);
continue;
}
SignalAccount *_Nullable persistedSignalAccount = persistedSignalAccountMap[signalAccount.recipientAddress];
if (persistedSignalAccount == nil) {
// new Signal Account
signalAccountsToKeep[signalAccount.recipientAddress] = signalAccount;
[signalAccountsToUpsert addObject:signalAccount];
continue;
}
if ([persistedSignalAccount hasSameContent:signalAccount]) {
// Same value, no need to save.
signalAccountsToKeep[signalAccount.recipientAddress] = persistedSignalAccount;
continue;
}
// value changed, save account
if (persistedSignalAccount.contact.isFromContactSync) {
OWSLogInfo(@"replacing SignalAccount from synced contact with SignalAccount from system contacts");
}
signalAccountsToKeep[signalAccount.recipientAddress] = signalAccount;
[signalAccountsToUpsert addObject:signalAccount];
}
// Clean up orphans.
NSMutableArray<SignalAccount *> *signalAccountsToRemove = [NSMutableArray new];
for (SignalAccount *signalAccount in persistedSignalAccounts) {
if (signalAccount == signalAccountsToKeep[signalAccount.recipientAddress]) {
continue;
}
// In theory we want to remove SignalAccounts if the user deletes the corresponding system contact.
// However, as of iOS 11.2 CNContactStore occasionally gives us only a subset of the system contacts.
// Because of that, it's not safe to clear orphaned accounts.
// Because we still want to give users a way to clear their stale accounts, if they pull-to-refresh
// their contacts we'll clear the cached ones.
// RADAR: https://bugreport.apple.com/web/?problemID=36082946
BOOL isOrphan = signalAccountsToKeep[signalAccount.recipientAddress] == nil;
if (isOrphan && !shouldClearStaleCache) {
OWSLogVerbose(@"Ensuring old SignalAccount is not inadvertently lost: %@", signalAccount);
// Make note that we're retaining this orphan; otherwise we could
// retain multiple orphans for a given recipient.
signalAccountsToKeep[signalAccount.recipientAddress] = signalAccount;
continue;
} else {
// Always cleanup instances that have been replaced by another instance.
}
[signalAccountsToRemove addObject:signalAccount];
}
// Update cached SignalAccounts on disk
DatabaseStorageWrite(self.databaseStorage, ^(SDSAnyWriteTransaction *transaction) {
if (signalAccountsToUpsert.count > 0) {
OWSLogInfo(@"Saving %lu SignalAccounts", (unsigned long)signalAccountsToUpsert.count);
for (SignalAccount *signalAccount in signalAccountsToUpsert) {
OWSLogVerbose(@"Saving SignalAccount: %@", signalAccount.recipientAddress);
[signalAccount anyUpsertWithTransaction:transaction];
}
}
if (signalAccountsToRemove.count > 0) {
OWSLogInfo(@"Removing %lu old SignalAccounts.", (unsigned long)signalAccountsToRemove.count);
for (SignalAccount *signalAccount in signalAccountsToRemove) {
OWSLogVerbose(@"Removing old SignalAccount: %@", signalAccount.recipientAddress);
[signalAccount anyRemoveWithTransaction:transaction];
}
}
OWSLogInfo(
@"SignalAccount cache size: %lu.", (unsigned long)[SignalAccount anyCountWithTransaction:transaction]);
});
// Add system contacts to the profile whitelist immediately
// so that they do not see the "message request" UI.
[self.profileManager addUsersToProfileWhitelist:seenAddresses.allObjects];
dispatch_async(dispatch_get_main_queue(), ^{
[self updateSignalAccounts:signalAccountsToKeep.allValues shouldSetHasLoadedContacts:didLoad];
});
});
}
- (void)updateSignalAccounts:(NSArray<SignalAccount *> *)signalAccounts
shouldSetHasLoadedContacts:(BOOL)shouldSetHasLoadedContacts
{
OWSAssertIsOnMainThread();
BOOL hadLoadedContacts = self.hasLoadedContacts;
if (shouldSetHasLoadedContacts) {
_hasLoadedContacts = YES;
}
if ([signalAccounts isEqual:self.signalAccounts]) {
OWSLogDebug(@"SignalAccounts unchanged.");
self.isSetup = YES;
if (hadLoadedContacts != self.hasLoadedContacts) {
[[NSNotificationCenter defaultCenter]
postNotificationNameAsync:OWSContactsManagerSignalAccountsDidChangeNotification
object:nil];
}
return;
}
NSMutableArray<SignalServiceAddress *> *allAddresses = [NSMutableArray new];
for (SignalAccount *signalAccount in signalAccounts) {
[allAddresses addObject:signalAccount.recipientAddress];
}
self.signalAccounts = [signalAccounts sortedArrayUsingComparator:self.signalAccountComparator];
[self.profileManager setContactAddresses:allAddresses];
self.isSetup = YES;
[[NSNotificationCenter defaultCenter]
postNotificationNameAsync:OWSContactsManagerSignalAccountsDidChangeNotification
object:nil];
}
- (nullable NSString *)cachedContactNameForAddress:(SignalServiceAddress *)address
{
SignalAccount *_Nullable signalAccount = [self fetchSignalAccountForAddress:address];
return [self cachedContactNameForAddress:address signalAccount:signalAccount];
}
- (nullable NSString *)cachedContactNameForAddress:(SignalServiceAddress *)address
transaction:(SDSAnyReadTransaction *)transaction
{
OWSAssertDebug(address);
OWSAssertDebug(transaction);
SignalAccount *_Nullable signalAccount = [self fetchSignalAccountForAddress:address transaction:transaction];
NSString *_Nullable phoneNumber = nil;
if (signalAccount == nil) {
// cachedContactNameForAddress only needs the phone number
// if signalAccount is nil.
phoneNumber = [self phoneNumberForAddress:address transaction:transaction];
}
return [self cachedContactNameForAddress:address signalAccount:signalAccount phoneNumber:phoneNumber];
}
- (nullable NSString *)cachedContactNameForAddress:(SignalServiceAddress *)address
signalAccount:(nullable SignalAccount *)signalAccount
{
NSString *_Nullable phoneNumber = nil;
if (signalAccount == nil) {
// cachedContactNameForAddress only needs the phone number
// if signalAccount is nil.
phoneNumber = [self phoneNumberForAddress:address];
}
return [self cachedContactNameForAddress:address signalAccount:signalAccount phoneNumber:phoneNumber];
}
- (nullable NSString *)cachedContactNameForAddress:(SignalServiceAddress *)address
signalAccount:(nullable SignalAccount *)signalAccount
phoneNumber:(nullable NSString *)phoneNumber
{
OWSAssertDebug(address);
if (!signalAccount) {
// search system contacts for no-longer-registered signal users, for which there will be no SignalAccount
Contact *_Nullable nonSignalContact = self.allContactsMap[phoneNumber];
if (!nonSignalContact) {
return nil;
}
return nonSignalContact.fullName;
}
NSString *fullName = signalAccount.contactFullName;
if (fullName.length == 0) {
return nil;
}
NSString *multipleAccountLabelText = signalAccount.multipleAccountLabelText;
if (multipleAccountLabelText.length == 0) {
return fullName;
}
return [NSString stringWithFormat:@"%@ (%@)", fullName, multipleAccountLabelText];
}
- (nullable NSPersonNameComponents *)cachedContactNameComponentsForAddress:(SignalServiceAddress *)address
transaction:(SDSAnyReadTransaction *)transaction
{
SignalAccount *_Nullable signalAccount = [self fetchSignalAccountForAddress:address transaction:transaction];
NSString *_Nullable phoneNumber = nil;
if (signalAccount == nil) {
// We only need the phone number if signalAccount is nil.
phoneNumber = [self phoneNumberForAddress:address transaction:transaction];
}
return [self cachedContactNameComponentsForSignalAccount:signalAccount phoneNumber:phoneNumber];
}
- (nullable NSPersonNameComponents *)cachedContactNameComponentsForAddress:(SignalServiceAddress *)address
{
SignalAccount *_Nullable signalAccount = [self fetchSignalAccountForAddress:address];
NSString *_Nullable phoneNumber = nil;
if (signalAccount == nil) {
// We only need the phone number if signalAccount is nil.
phoneNumber = [self phoneNumberForAddress:address];
}
return [self cachedContactNameComponentsForSignalAccount:signalAccount phoneNumber:phoneNumber];
}
- (nullable NSPersonNameComponents *)cachedContactNameComponentsForSignalAccount:(nullable SignalAccount *)signalAccount
phoneNumber:(nullable NSString *)phoneNumber
{
NSPersonNameComponents *nameComponents = [NSPersonNameComponents new];
if (!signalAccount) {
// search system contacts for no-longer-registered signal users, for which there will be no SignalAccount
Contact *_Nullable nonSignalContact = self.allContactsMap[phoneNumber];
if (!nonSignalContact) {
return nil;
}
nameComponents.givenName = nonSignalContact.firstName;
nameComponents.familyName = nonSignalContact.lastName;
return nameComponents;
}
NSString *fullName = signalAccount.contactFullName;
if (fullName.length == 0) {
return nil;
}
nameComponents.givenName = signalAccount.contactFirstName;
nameComponents.familyName = signalAccount.contactLastName;
return nameComponents;
}
- (nullable NSString *)phoneNumberForAddress:(SignalServiceAddress *)address
{
if (address.phoneNumber != nil) {
return address.phoneNumber;
}
SignalAccount *_Nullable signalAccount = [self fetchSignalAccountForAddress:address];
return signalAccount.recipientPhoneNumber;
}
- (nullable NSString *)phoneNumberForAddress:(SignalServiceAddress *)address
transaction:(SDSAnyReadTransaction *)transaction
{
if (address.phoneNumber != nil) {
return address.phoneNumber;
}
SignalAccount *_Nullable signalAccount = [self fetchSignalAccountForAddress:address transaction:transaction];
return signalAccount.recipientPhoneNumber;
}
#pragma mark - View Helpers
// TODO move into Contact class.
+ (NSString *)accountLabelForContact:(Contact *)contact address:(SignalServiceAddress *)address
{
OWSAssertDebug(contact);
OWSAssertDebug(address.isValid);
OWSAssertDebug([contact.registeredAddresses containsObject:address]);
if (contact.registeredAddresses.count <= 1) {
return nil;
}
// 1. Find the address type of this account.
NSString *addressLabel = [contact nameForAddress:address];
// 2. Find all addresses for this contact of the same type.
NSMutableArray<SignalServiceAddress *> *addressesWithTheSameName = [NSMutableArray new];
for (SignalServiceAddress *registeredAddress in contact.registeredAddresses) {
if ([addressLabel isEqualToString:[contact nameForAddress:registeredAddress]]) {
[addressesWithTheSameName addObject:registeredAddress];
}
}
OWSAssertDebug([addressesWithTheSameName containsObject:address]);
if (addressesWithTheSameName.count > 1) {
NSUInteger index =
[[addressesWithTheSameName sortedArrayUsingSelector:@selector((compare:))] indexOfObject:address];
NSString *indexText = [OWSFormat formatUInt:index + 1];
addressLabel =
[NSString stringWithFormat:NSLocalizedString(@"PHONE_NUMBER_TYPE_AND_INDEX_NAME_FORMAT",
@"Format for phone number label with an index. Embeds {{Phone number label "
@"(e.g. 'home')}} and {{index, e.g. 2}}."),
addressLabel,
indexText];
}
return addressLabel.filterStringForDisplay;
}
- (void)clearColorNameCache
{
[self.colorNameCache removeAllObjects];
}
- (ConversationColorName)conversationColorNameForAddress:(SignalServiceAddress *)address
transaction:(SDSAnyReadTransaction *)transaction
{
OWSAssertIsOnMainThread();
_Nullable ConversationColorName cachedColorName = [self.colorNameCache objectForKey:address];
if (cachedColorName != nil) {
return cachedColorName;
}
ConversationColorName colorName = [TSContactThread conversationColorNameForContactAddress:address
transaction:transaction];
[self.colorNameCache setObject:colorName forKey:address];
return colorName;
}
- (BOOL)phoneNumber:(PhoneNumber *)phoneNumber1 matchesNumber:(PhoneNumber *)phoneNumber2
{
return [phoneNumber1.toE164 isEqualToString:phoneNumber2.toE164];
}
#pragma mark - Whisper User Management
- (BOOL)isSystemContactWithPhoneNumber:(NSString *)phoneNumber
{
OWSAssertDebug(phoneNumber.length > 0);
return self.allContactsMap[phoneNumber] != nil;
}
- (BOOL)isSystemContactWithAddress:(SignalServiceAddress *)address
{
NSString *phoneNumber = address.phoneNumber;
if (phoneNumber.length == 0) {
return NO;
}
return [self isSystemContactWithPhoneNumber:phoneNumber];
}
- (BOOL)isSystemContactWithSignalAccount:(NSString *)phoneNumber
{
OWSAssertDebug(phoneNumber.length > 0);
return [self hasSignalAccountForAddress:[[SignalServiceAddress alloc] initWithPhoneNumber:phoneNumber]];
}
- (BOOL)hasNameInSystemContactsForAddress:(SignalServiceAddress *)address
{
return [self cachedContactNameForAddress:address].length > 0;
}
- (NSString *)displayNameForThread:(TSThread *)thread transaction:(SDSAnyReadTransaction *)transaction
{
if (thread.isNoteToSelf) {
return MessageStrings.noteToSelf;
} else if ([thread isKindOfClass:TSContactThread.class]) {
TSContactThread *contactThread = (TSContactThread *)thread;
return [self displayNameForAddress:contactThread.contactAddress transaction:transaction];
} else if ([thread isKindOfClass:TSGroupThread.class]) {
TSGroupThread *groupThread = (TSGroupThread *)thread;
return groupThread.groupNameOrDefault;
} else {
OWSFailDebug(@"unexpected thread: %@", thread);
return @"";
}
}
- (NSString *)displayNameForThreadWithSneakyTransaction:(TSThread *)thread
{
if (thread.isNoteToSelf) {
return MessageStrings.noteToSelf;
} else if ([thread isKindOfClass:TSContactThread.class]) {
TSContactThread *contactThread = (TSContactThread *)thread;
__block NSString *name;
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
name = [self displayNameForAddress:contactThread.contactAddress transaction:transaction];
}];
return name;
} else if ([thread isKindOfClass:TSGroupThread.class]) {
TSGroupThread *groupThread = (TSGroupThread *)thread;
return groupThread.groupNameOrDefault;
} else {
OWSFailDebug(@"unexpected thread: %@", thread);
return @"";
}
}
- (NSString *)unknownContactName
{
return NSLocalizedString(
@"UNKNOWN_CONTACT_NAME", @"Displayed if for some reason we can't determine a contacts phone number *or* name");
}
- (nullable NSString *)nameFromSystemContactsForAddress:(SignalServiceAddress *)address
{
return [self cachedContactNameForAddress:address];
}
- (NSString *)displayNameForAddress:(SignalServiceAddress *)address transaction:(SDSAnyReadTransaction *)transaction
{
OWSAssertDebug(address.isValid);
// Prefer a saved name from system contacts, if available
NSString *_Nullable savedContactName = [self cachedContactNameForAddress:address transaction:transaction];
if (savedContactName.length > 0) {
return savedContactName;
}
NSString *_Nullable phoneNumber = [self phoneNumberForAddress:address transaction:transaction];
if (phoneNumber) {
phoneNumber = [PhoneNumber bestEffortFormatPartialUserSpecifiedTextToLookLikeAPhoneNumber:phoneNumber];
}
NSString *_Nullable profileName = [self.profileManager fullNameForAddress:address transaction:transaction];
// Include the profile name, if set
if (profileName.length > 0) {
return profileName;
}
NSString *_Nullable username = [self.profileManager usernameForAddress:address transaction:transaction];
if (username) {
username = [CommonFormats formatUsername:username];
}
// else fall back to phone number, username, profile name, etc.
return phoneNumber ?: username ?: self.unknownUserLabel;
}
- (NSString *)displayNameForAddress:(SignalServiceAddress *)address
{
OWSAssertDebug(address.isValid);
__block NSString *displayName;
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
displayName = [self displayNameForAddress:address transaction:transaction];
}];
return displayName;
}
- (NSString *)unknownUserLabel
{
return NSLocalizedString(@"UNKNOWN_USER", @"Label indicating an unknown user.");
}
- (NSString *_Nonnull)displayNameForSignalAccount:(SignalAccount *)signalAccount
{
OWSAssertDebug(signalAccount);
return [self displayNameForAddress:signalAccount.recipientAddress];
}
- (NSString *)shortDisplayNameForAddress:(SignalServiceAddress *)address
transaction:(SDSAnyReadTransaction *)transaction
{
OWSAssertDebug(address.isValid);
NSPersonNameComponents *_Nullable nameComponents = [self nameComponentsForAddress:address transaction:transaction];
if (!nameComponents) {
return [self displayNameForAddress:address transaction:transaction];
}
static NSPersonNameComponentsFormatter *formatter;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
formatter = [NSPersonNameComponentsFormatter new];
formatter.style = NSPersonNameComponentsFormatterStyleShort;
});
return [formatter stringFromPersonNameComponents:nameComponents];
}
- (nullable NSPersonNameComponents *)nameComponentsForAddress:(SignalServiceAddress *)address
{
OWSAssertDebug(address.isValid);
NSPersonNameComponents *_Nullable savedContactNameComponents = [self cachedContactNameComponentsForAddress:address];
if (savedContactNameComponents) {
return savedContactNameComponents;
}
__block NSPersonNameComponents *_Nullable profileNameComponents;
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
profileNameComponents = [self.profileManager nameComponentsForAddress:address transaction:transaction];
}];
return profileNameComponents;
}
- (nullable NSPersonNameComponents *)nameComponentsForAddress:(SignalServiceAddress *)address
transaction:(SDSAnyReadTransaction *)transaction
{
OWSAssertDebug(address.isValid);
NSPersonNameComponents *_Nullable savedContactNameComponents =
[self cachedContactNameComponentsForAddress:address transaction:transaction];
if (savedContactNameComponents) {
return savedContactNameComponents;
}
return [self.profileManager nameComponentsForAddress:address transaction:transaction];
}
- (nullable SignalAccount *)fetchSignalAccountForAddress:(SignalServiceAddress *)address
{
OWSAssertDebug(address);
__block SignalAccount *_Nullable result;
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
result = [self.signalAccountReadCache getSignalAccountWithAddress:address transaction:transaction];
}];
return result;
}
- (nullable SignalAccount *)fetchSignalAccountForAddress:(SignalServiceAddress *)address
transaction:(SDSAnyReadTransaction *)transaction
{
OWSAssertDebug(address);
OWSAssertDebug(transaction);
return [self.signalAccountReadCache getSignalAccountWithAddress:address transaction:transaction];
}
- (SignalAccount *)fetchOrBuildSignalAccountForAddress:(SignalServiceAddress *)address
{
OWSAssertDebug(address);
SignalAccount *_Nullable signalAccount = [self fetchSignalAccountForAddress:address];
return (signalAccount ?: [[SignalAccount alloc] initWithSignalServiceAddress:address]);
}
- (BOOL)hasSignalAccountForAddress:(SignalServiceAddress *)address
{
return [self fetchSignalAccountForAddress:address] != nil;
}
- (nullable UIImage *)systemContactOrSyncedImageForAddress:(nullable SignalServiceAddress *)address
{
if (address == nil) {
OWSFailDebug(@"address was unexpectedly nil");
return nil;
}
NSString *_Nullable phoneNumber = [self phoneNumberForAddress:address];
Contact *_Nullable contact = self.allContactsMap[phoneNumber];
if (contact != nil && contact.cnContactId != nil) {
UIImage *_Nullable systemContactImage = [self avatarImageForCNContactId:contact.cnContactId];
if (systemContactImage != nil) {
return systemContactImage;
}
}
// If we haven't loaded system contacts yet, we may have a cached copy in the db
SignalAccount *signalAccount = [self fetchSignalAccountForAddress:address];
if (signalAccount == nil) {
return nil;
}
contact = signalAccount.contact;
OWSAssertDebug(signalAccount.contact);
if (contact != nil && contact.cnContactId != nil) {
UIImage *_Nullable systemContactImage = [self avatarImageForCNContactId:contact.cnContactId];
if (systemContactImage != nil) {
return systemContactImage;
}
}
if (signalAccount.contactAvatarJpegData != nil) {
return [[UIImage alloc] initWithData:signalAccount.contactAvatarJpegData];
}
return nil;
}
- (nullable UIImage *)profileImageForAddressWithSneakyTransaction:(nullable SignalServiceAddress *)address
{
if (address == nil) {
OWSFailDebug(@"address was unexpectedly nil");
return nil;
}
__block UIImage *_Nullable image;
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
image = [self.profileManager profileAvatarForAddress:address transaction:transaction];
}];
return image;
}
- (nullable NSData *)profileImageDataForAddressWithSneakyTransaction:(nullable SignalServiceAddress *)address
{
if (address == nil) {
OWSFailDebug(@"address was unexpectedly nil");
return nil;
}
__block NSData *_Nullable data;
[self.databaseStorage readWithBlock:^(SDSAnyReadTransaction *transaction) {
data = [self.profileManager profileAvatarDataForAddress:address transaction:transaction];
}];
return data;
}
- (nullable UIImage *)imageForAddressWithSneakyTransaction:(nullable SignalServiceAddress *)address
{
if (address == nil) {
OWSFailDebug(@"address was unexpectedly nil");
return nil;
}
__block UIImage *_Nullable image = [self systemContactOrSyncedImageForAddress:address];
if (image != nil) {
return image;
}
// Else try to use the image from their profile
return [self profileImageForAddressWithSneakyTransaction:address];
}
- (nullable UIImage *)imageForAddress:(nullable SignalServiceAddress *)address
transaction:(SDSAnyReadTransaction *)transaction
{
if (address == nil) {
OWSFailDebug(@"address was unexpectedly nil");
return nil;
}
__block UIImage *_Nullable image = [self systemContactOrSyncedImageForAddress:address];
if (image != nil) {
return image;
}
// Else try to use the image from their profile
return [self.profileManager profileAvatarForAddress:address transaction:transaction];
}
- (NSComparisonResult)compareSignalAccount:(SignalAccount *)left withSignalAccount:(SignalAccount *)right
{
return self.signalAccountComparator(left, right);
}
- (NSComparisonResult (^)(SignalAccount *left, SignalAccount *right))signalAccountComparator
{
return ^NSComparisonResult(SignalAccount *left, SignalAccount *right) {
NSString *leftName = [self comparableNameForSignalAccount:left];
NSString *rightName = [self comparableNameForSignalAccount:right];
NSComparisonResult nameComparison = [leftName caseInsensitiveCompare:rightName];
if (nameComparison == NSOrderedSame) {
return [left.recipientAddress.stringForDisplay compare:right.recipientAddress.stringForDisplay];
}
return nameComparison;
};
}
- (NSArray<SignalServiceAddress *> *)sortSignalServiceAddresses:(NSArray<SignalServiceAddress *> *)addresses
transaction:(SDSAnyReadTransaction *)transaction
{
return [addresses sortedArrayUsingComparator:[self signalServiceAddressComparatorWithTransaction:transaction]];
}
- (NSComparisonResult (^)(SignalServiceAddress *left,
SignalServiceAddress *right))signalServiceAddressComparatorWithTransaction:(SDSAnyReadTransaction *)transaction
{
// We want to sort E164 phone numbers _after_ names.
NSCharacterSet *e164PrefixSet = [NSCharacterSet characterSetWithCharactersInString:@"+"];
BOOL (^hasE164Prefix)(NSString *) = ^(NSString *string) {
if (string.length < 1) {
return NO;
}
unichar firstChar = [string characterAtIndex:0];
return [e164PrefixSet characterIsMember:firstChar];
};
return ^NSComparisonResult(SignalServiceAddress *left, SignalServiceAddress *right) {
NSString *leftName = [self comparableNameForAddress:left transaction:transaction];
NSString *rightName = [self comparableNameForAddress:right transaction:transaction];
BOOL leftHasE164Prefix = hasE164Prefix(leftName);
BOOL rightHasE164Prefix = hasE164Prefix(rightName);
if (leftHasE164Prefix && !rightHasE164Prefix) {
return NSOrderedDescending;
} else if (!leftHasE164Prefix && rightHasE164Prefix) {
return NSOrderedAscending;
}
NSComparisonResult nameComparison = [leftName caseInsensitiveCompare:rightName];
if (nameComparison == NSOrderedSame) {
return [left.stringForDisplay compare:right.stringForDisplay];
}
return nameComparison;
};
}
- (BOOL)shouldSortByGivenName
{
return [[CNContactsUserDefaults sharedDefaults] sortOrder] == CNContactSortOrderGivenName;
}
- (NSString *)comparableNameForAddress:(SignalServiceAddress *)address transaction:(SDSAnyReadTransaction *)transaction
{
SignalAccount *_Nullable signalAccount = [self fetchSignalAccountForAddress:address transaction:transaction];
if (signalAccount != nil) {
return [self comparableNameForSignalAccount:signalAccount
transaction:transaction];
}
NSString *_Nullable phoneNumber = signalAccount.recipientPhoneNumber;
if (phoneNumber != nil) {
Contact *_Nullable contact = self.allContactsMap[phoneNumber];
NSString *_Nullable comparableContactName = [self comparableNameForContact:contact];
if (comparableContactName.length > 0) {
return comparableContactName;
}
}
// Fall back to non-contact display name.
return [self displayNameForAddress:address transaction:transaction];
}
- (nullable NSString *)comparableNameForContact:(nullable Contact *)contact
{
if (contact == nil) {
return nil;
}
if (self.shouldSortByGivenName) {
return contact.comparableNameFirstLast;
}
return contact.comparableNameLastFirst;
}
- (NSString *)comparableNameForSignalAccount:(SignalAccount *)signalAccount
{
NSString *_Nullable name = [self comparableNameForContact:signalAccount.contact];
if (name.length < 1) {
name = [self displayNameForSignalAccount:signalAccount];
}
return name;
}
- (NSString *)comparableNameForSignalAccount:(SignalAccount *)signalAccount
transaction:(SDSAnyReadTransaction *)transaction
{
NSString *_Nullable name = [self comparableNameForContact:signalAccount.contact];
if (name.length < 1) {
name = [self displayNameForAddress:signalAccount.recipientAddress transaction:transaction];
}
return name;
}
NS_ASSUME_NONNULL_END
@end