Swiftgram/TelegramUI/PresentationPasscodeSettings.swift

import Foundation
import Postbox
import SwiftSignalKit

public struct PresentationPasscodeSettings: PreferencesEntry, Equatable {
    public let enableBiometrics: Bool
    public let autolockTimeout: Int32?
    
    public static var defaultSettings: PresentationPasscodeSettings {
        return PresentationPasscodeSettings(enableBiometrics: false, autolockTimeout: nil)
    }
    
    init(enableBiometrics: Bool, autolockTimeout: Int32?) {
        self.enableBiometrics = enableBiometrics
        self.autolockTimeout = autolockTimeout
    }
    
    public init(decoder: Decoder) {
        self.enableBiometrics = decoder.decodeInt32ForKey("b", orElse: 0) != 0
        self.autolockTimeout = decoder.decodeOptionalInt32ForKey("al")
    }
    
    public func encode(_ encoder: Encoder) {
        encoder.encodeInt32(self.enableBiometrics ? 1 : 0, forKey: "s")
        if let autolockTimeout = self.autolockTimeout {
            encoder.encodeInt32(autolockTimeout, forKey: "al")
        } else {
            encoder.encodeNil(forKey: "al")
        }
    }
    
    public func isEqual(to: PreferencesEntry) -> Bool {
        if let to = to as? PresentationPasscodeSettings {
            return self == to
        } else {
            return false
        }
    }
    
    public static func ==(lhs: PresentationPasscodeSettings, rhs: PresentationPasscodeSettings) -> Bool {
        return lhs.enableBiometrics == rhs.enableBiometrics && lhs.autolockTimeout == rhs.autolockTimeout
    }
    
    func withUpdatedEnableBiometrics(_ enableBiometrics: Bool) -> PresentationPasscodeSettings {
        return PresentationPasscodeSettings(enableBiometrics: enableBiometrics, autolockTimeout: self.autolockTimeout)
    }
    
    func withUpdatedAutolockTimeout(_ autolockTimeout: Int32?) -> PresentationPasscodeSettings {
        return PresentationPasscodeSettings(enableBiometrics: self.enableBiometrics, autolockTimeout: autolockTimeout)
    }
}

func updatePresentationPasscodeSettingsInteractively(postbox: Postbox, _ f: @escaping (PresentationPasscodeSettings) -> PresentationPasscodeSettings) -> Signal<Void, NoError> {
    return postbox.modify { modifier -> Void in
        modifier.updatePreferencesEntry(key: ApplicationSpecificPreferencesKeys.presentationPasscodeSettings, { entry in
            let currentSettings: PresentationPasscodeSettings
            if let entry = entry as? PresentationPasscodeSettings {
                currentSettings = entry
            } else {
                currentSettings = PresentationPasscodeSettings.defaultSettings
            }
            return f(currentSettings)
        })
    }
}