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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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								NS_ASSUME_NONNULL_BEGIN
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								/**
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								 * The users privacy preference for what kind of content to show in lock screen notifications.
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								 */
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								typedef NS_ENUM(NSUInteger, NotificationType) {
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								    NotificationNoNameNoPreview,
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								    NotificationNameNoPreview,
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								    NotificationNamePreview,
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								};
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								// Used when migrating logging to NSUserDefaults.
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								extern NSString *const OWSPreferencesSignalDatabaseCollection;
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								extern NSString *const OWSPreferencesKeyEnableDebugLog;
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								extern NSString *const OWSPreferencesCallLoggingDidChangeNotification;
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								@class YapDatabaseReadWriteTransaction;
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								@interface OWSPreferences : NSObject
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								#pragma mark - Helpers
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								- (nullable id)tryGetValueForKey:(NSString *)key;
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								- (void)setValueForKey:(NSString *)key toValue:(nullable id)value;
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								- (void)clear;
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								#pragma mark - Specific Preferences
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								+ (BOOL)isReadyForAppExtensions;
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								+ (void)setIsReadyForAppExtensions;
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								- (BOOL)hasSentAMessage;
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								- (void)setHasSentAMessage:(BOOL)enabled;
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								+ (BOOL)isLoggingEnabled;
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								+ (void)setIsLoggingEnabled:(BOOL)flag;
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								- (BOOL)screenSecurityIsEnabled;
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								- (void)setScreenSecurity:(BOOL)flag;
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								- (NotificationType)notificationPreviewType;
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								- (void)setNotificationPreviewType:(NotificationType)type;
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								- (NSString *)nameForNotificationPreviewType:(NotificationType)notificationType;
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								- (BOOL)soundInForeground;
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								- (void)setSoundInForeground:(BOOL)enabled;
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								- (BOOL)hasDeclinedNoContactsView;
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								- (void)setHasDeclinedNoContactsView:(BOOL)value;
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								- (void)setIOSUpgradeNagDate:(NSDate *)value;
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								- (nullable NSDate *)iOSUpgradeNagDate;
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								- (BOOL)hasGeneratedThumbnails;
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								- (void)setHasGeneratedThumbnails:(BOOL)value;
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								#pragma mark Callkit
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								- (BOOL)isSystemCallLogEnabled;
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								- (void)setIsSystemCallLogEnabled:(BOOL)flag;
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								#pragma mark - Legacy CallKit settings
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								- (void)applyCallLoggingSettingsForLegacyUsersWithTransaction:(YapDatabaseReadWriteTransaction *)transaction;
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								- (BOOL)isCallKitEnabled;
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								- (void)setIsCallKitEnabled:(BOOL)flag;
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								// Returns YES IFF isCallKitEnabled has been set by user.
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								- (BOOL)isCallKitEnabledSet;
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								- (BOOL)isCallKitPrivacyEnabled;
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								- (void)setIsCallKitPrivacyEnabled:(BOOL)flag;
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								// Returns YES IFF isCallKitPrivacyEnabled has been set by user.
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								- (BOOL)isCallKitPrivacySet;
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								#pragma mark direct call connectivity (non-TURN)
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								- (BOOL)doCallsHideIPAddress;
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								- (void)setDoCallsHideIPAddress:(BOOL)flag;
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								#pragma mark - Push Tokens
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								- (void)setPushToken:(NSString *)value;
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								- (nullable NSString *)getPushToken;
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								- (void)setVoipToken:(NSString *)value;
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								- (nullable NSString *)getVoipToken;
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								- (void)unsetRecordedAPNSTokens;
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								@end
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								NS_ASSUME_NONNULL_END
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