/*
 * Copyright (C) 2024 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.settings.fuelgauge.batteryusage.db

import android.database.Cursor
import androidx.room.Dao
import androidx.room.Insert
import androidx.room.OnConflictStrategy
import androidx.room.Query

/** Data access object for accessing [AppUsageEventEntity] in the database. */
@Dao
interface AppUsageEventDao {
    /** Inserts a [AppUsageEventEntity] data into the database. */
    @Insert(onConflict = OnConflictStrategy.REPLACE) fun insert(event: AppUsageEventEntity)

    /** Inserts [AppUsageEventEntity] data into the database. */
    @Insert(onConflict = OnConflictStrategy.REPLACE)
    fun insertAll(events: List<AppUsageEventEntity>)

    /** Lists all recorded data after a specific timestamp. */
    @Query("SELECT * FROM AppUsageEventEntity WHERE timestamp > :timestamp ORDER BY timestamp DESC")
    fun getAllAfter(timestamp: Long): List<AppUsageEventEntity>

    /** Gets the [Cursor] of all recorded data after a specific timestamp of the users. */
    @Query(
        "SELECT * FROM AppUsageEventEntity WHERE timestamp >= :timestamp" +
            " AND userId IN (:userIds) ORDER BY timestamp ASC"
    )
    fun getAllForUsersAfter(userIds: List<Long>, timestamp: Long): Cursor

    /** Gets the [Cursor] of the latest timestamp of the specific user. */
    @Query("SELECT MAX(timestamp) as timestamp FROM AppUsageEventEntity WHERE userId = :userId")
    fun getLatestTimestampOfUser(userId: Long): Cursor

    /** Deletes all recorded data before a specific timestamp. */
    @Query("DELETE FROM AppUsageEventEntity WHERE timestamp <= :timestamp")
    fun clearAllBefore(timestamp: Long)

    /** Deletes all recorded data after a specific timestamp. */
    @Query("DELETE FROM AppUsageEventEntity WHERE timestamp >= :timestamp")
    fun clearAllAfter(timestamp: Long)

    /** Clears all recorded data in the database. */
    @Query("DELETE FROM AppUsageEventEntity") fun clearAll()
}