/*
 * 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 [BatteryState] in the database. */
@Dao
interface BatteryStateDao {
    /** Inserts a [BatteryState] data into the database. */
    @Insert(onConflict = OnConflictStrategy.REPLACE) fun insert(state: BatteryState)

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

    /** Gets the [Cursor] of the latest record timestamp no later than the given timestamp. */
    @Query("SELECT MAX(timestamp) FROM BatteryState WHERE timestamp <= :timestamp")
    fun getLatestTimestampBefore(timestamp: Long): Cursor

    /** Lists all recorded battery states after a specific timestamp. */
    @Query("SELECT * FROM BatteryState WHERE timestamp >= :timestamp ORDER BY timestamp ASC")
    fun getBatteryStatesAfter(timestamp: Long): Cursor

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

    /** Get the count of distinct timestamp after a specific timestamp. */
    @Query("SELECT COUNT(DISTINCT timestamp) FROM BatteryState WHERE timestamp > :timestamp")
    fun getDistinctTimestampCount(timestamp: Long): Int

    /** Lists all distinct timestamps after a specific timestamp. */
    @Query("SELECT DISTINCT timestamp FROM BatteryState WHERE timestamp > :timestamp")
    fun getDistinctTimestamps(timestamp: Long): List<Long>

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

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

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