/*
 * Copyright (C) 2023 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.
 *
 *
 */

/**
 * Copyright (C) 2022 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.healthconnect.controller.permissions.shared

import android.health.connect.HealthConnectManager
import android.health.connect.accesslog.AccessLog
import android.util.Log
import androidx.core.os.asOutcomeReceiver
import com.android.healthconnect.controller.service.IoDispatcher
import java.time.Instant
import javax.inject.Inject
import javax.inject.Singleton
import kotlinx.coroutines.CoroutineDispatcher
import kotlinx.coroutines.suspendCancellableCoroutine
import kotlinx.coroutines.withContext

/** Query recent access logs for health connect connected apps. */
@Singleton
class QueryRecentAccessLogsUseCase
@Inject
constructor(
    private val manager: HealthConnectManager,
    @IoDispatcher private val dispatcher: CoroutineDispatcher
) : IQueryRecentAccessLogsUseCase {

    companion object {
        private const val TAG = "QueryRecentAccessLogsUseCase"
    }

    override suspend fun invoke(): Map<String, Instant> =
        withContext(dispatcher) {
            try {
                val accessLogs =
                    suspendCancellableCoroutine<List<AccessLog>> { continuation ->
                        manager.queryAccessLogs(Runnable::run, continuation.asOutcomeReceiver())
                    }
                accessLogs.associate { it.packageName to it.accessTime }
            } catch (e: Exception) {
                Log.e(TAG, "QueryRecentAccessLogsUseCase ", e)
                emptyMap()
            }
        }
}

interface IQueryRecentAccessLogsUseCase {
    suspend fun invoke(): Map<String, Instant>
}