packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBypassController.kt

/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License
 */

package com.android.systemui.statusbar.phone

import android.content.Context
import android.hardware.face.FaceManager
import android.provider.Settings
import com.android.keyguard.KeyguardUpdateMonitor
import com.android.systemui.tuner.TunerService

import javax.inject.Inject
import javax.inject.Singleton

@Singleton
class KeyguardBypassController {

    /**
     * If face unlock dismisses the lock screen or keeps user on keyguard for the current user.
     */
    var bypassEnabled: Boolean = false
        get() = field && unlockMethodCache.isUnlockingWithFacePossible
        private set

    private val unlockMethodCache: UnlockMethodCache

    @Inject
    constructor(context: Context, tunerService: TunerService) {
        unlockMethodCache = UnlockMethodCache.getInstance(context)
        val faceManager = context.getSystemService(FaceManager::class.java)
        if (faceManager?.isHardwareDetected != true) {
            return
        }

        val dismissByDefault = if (context.resources.getBoolean(
                com.android.internal.R.bool.config_faceAuthDismissesKeyguard)) 1 else 0
        tunerService.addTunable(
                object : TunerService.Tunable {
                        override fun onTuningChanged(key: String?, newValue: String?) {
                                bypassEnabled = Settings.Secure.getIntForUser(
                                        context.contentResolver,
                                        Settings.Secure.FACE_UNLOCK_DISMISSES_KEYGUARD,
                                        dismissByDefault,
                                        KeyguardUpdateMonitor.getCurrentUser()) != 0
            }
        }, Settings.Secure.FACE_UNLOCK_DISMISSES_KEYGUARD)
    }
}