1 /*
2  * Copyright (C) 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.android.healthconnect.controller.autodelete.api
17 
18 import android.health.connect.HealthConnectException
19 import android.health.connect.HealthConnectManager
20 import com.android.healthconnect.controller.service.IoDispatcher
21 import com.android.healthconnect.controller.shared.usecase.UseCaseResults
22 import javax.inject.Inject
23 import javax.inject.Singleton
24 import kotlinx.coroutines.CoroutineDispatcher
25 import kotlinx.coroutines.withContext
26 
27 @Singleton
28 class LoadAutoDeleteUseCase
29 @Inject
30 constructor(
31     private val healthConnectManager: HealthConnectManager,
32     @IoDispatcher private val dispatcher: CoroutineDispatcher
33 ) {
34 
35     companion object {
36         private const val DAYS_IN_MONTH = 30.0
37     }
38 
39     /** Returns the number of months that is the auto-delete range. */
invokenull40     suspend operator fun invoke(): UseCaseResults<Int> =
41         withContext(dispatcher) {
42             try {
43                 val retentionInMonths =
44                     healthConnectManager.recordRetentionPeriodInDays / DAYS_IN_MONTH
45                 UseCaseResults.Success(retentionInMonths.toInt())
46             } catch (ex: HealthConnectException) {
47                 UseCaseResults.Failed(ex)
48             }
49         }
50 }
51