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/*
* Copyright (C) 2020 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.permissioncontroller.permission.data
import android.app.Application
import android.app.usage.UsageStats
import android.app.usage.UsageStatsManager
import android.app.usage.UsageStatsManager.INTERVAL_MONTHLY
import android.os.UserHandle
import com.android.permissioncontroller.PermissionControllerApplication
import com.android.permissioncontroller.permission.utils.Utils
import kotlinx.coroutines.Job
/**
* A livedata which tracks the usage stats for all packages for all users in a given length of time.
*
* @param app The current application
* @param searchTimeMs The length of time, in milliseconds, that this LiveData will track. The time
* will start when the liveData is loaded, and extend backwards searchTimeMs milliseconds.
* @param interval The interval to measure in. Default is monthly.
*/
class UsageStatsLiveData private constructor(
private val app: Application,
private val searchTimeMs: Long,
private val interval: Int = INTERVAL_MONTHLY
) : SmartAsyncMediatorLiveData<Map<UserHandle, List<UsageStats>>>() {
init {
addSource(UsersLiveData) {
update()
}
}
override suspend fun loadDataAndPostValue(job: Job) {
if (!UsersLiveData.isInitialized) {
return
}
val now = System.currentTimeMillis()
val userMap = mutableMapOf<UserHandle, List<UsageStats>>()
for (user in UsersLiveData.value!!) {
// If the user is not enabled, or if the user is a managed profile, and this is not an
// android TV (where parental control accounts are managed profiles), do not get stats.
if (Utils.isUserDisabledOrWorkProfile(user)) {
continue
}
val statsManager = Utils.getUserContext(app, user).getSystemService(
UsageStatsManager::class.java)!!
statsManager.queryUsageStats(interval, now - searchTimeMs, now)?.let { stats ->
userMap[user] = stats
}
}
postValue(userMap)
}
companion object : DataRepository<Pair<Long, Int>, UsageStatsLiveData>() {
override fun newValue(key: Pair<Long, Int>): UsageStatsLiveData {
return UsageStatsLiveData(PermissionControllerApplication.get(), key.first, key.second)
}
operator fun get(interval: Long): UsageStatsLiveData {
return get(interval to INTERVAL_MONTHLY)
}
}
}
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