GigaProjects

package com.gigaprojects.gigaweather.data

import android.content.Context
import androidx.room.Database
import androidx.room.Room
import androidx.room.RoomDatabase
import java.util.concurrent.ExecutorService
import java.util.concurrent.Executors

@Database(entities = [LocationEntity::class, WeatherHistoryEntity::class], version = 7, exportSchema = false)
abstract class LocationDatabase : RoomDatabase() {

    abstract fun locationDao(): LocationDao
    abstract fun weatherHistoryDao(): WeatherHistoryDao

    companion object {
        @Volatile
        private var INSTANCE: LocationDatabase? = null
        private const val NUMBER_OF_THREADS = 4
        val databaseWriteExecutor: ExecutorService =
            Executors.newFixedThreadPool(NUMBER_OF_THREADS)

        fun getDatabase(context: Context): LocationDatabase {
            return INSTANCE ?: synchronized(this) {
                val instance = Room.databaseBuilder(
                    context.applicationContext,
                    LocationDatabase::class.java,
                    "location_database"
                )
                    .fallbackToDestructiveMigration(dropAllTables = true)
                    .build()
                INSTANCE = instance
                instance
            }
        }
    }
}