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package xyz.driver.core
import slick.backend.DatabaseConfig
import slick.dbio.{DBIOAction, NoStream}
import slick.driver.JdbcProfile
import xyz.driver.core.time.Time
import scala.concurrent.{ExecutionContext, Future}
import scalaz.Monad
object database {
trait Database {
val profile: JdbcProfile
val database: JdbcProfile#Backend#Database
}
object Database {
def fromConfig(databaseName: String): Database = {
val dbConfig: DatabaseConfig[JdbcProfile] = DatabaseConfig.forConfig(databaseName)
new Database {
val profile: JdbcProfile = dbConfig.driver
val database: JdbcProfile#Backend#Database = dbConfig.db
}
}
}
type Schema = {
def create: DBIOAction[Unit, NoStream, slick.dbio.Effect.Schema]
def drop: DBIOAction[Unit, NoStream, slick.dbio.Effect.Schema]
}
trait ColumnTypes {
val profile: JdbcProfile
import profile.api._
implicit def `xyz.driver.core.Id.columnType`[T] =
MappedColumnType.base[Id[T], String](_.value, Id[T](_))
implicit def `xyz.driver.core.Name.columnType`[T] =
MappedColumnType.base[Name[T], String](_.value, Name[T](_))
implicit def `xyz.driver.core.time.Time.columnType` =
MappedColumnType.base[Time, Long](_.millis, Time(_))
}
trait DatabaseObject extends ColumnTypes {
def createTables(): Future[Unit]
def disconnect(): Unit
}
abstract class DatabaseObjectAdapter extends DatabaseObject {
def createTables(): Future[Unit] = Future.successful(())
def disconnect(): Unit = {}
}
trait Dal {
type T[_]
implicit val monadT: Monad[T]
def execute[D](operations: T[D]): Future[D]
def noAction[V](v: V): T[V]
def customAction[R](action: => Future[R]): T[R]
}
class FutureDal(executionContext: ExecutionContext) extends Dal {
implicit val exec = executionContext
override type T[_] = Future[_]
implicit val monadT: Monad[T] = new Monad[T] {
override def point[A](a: => A): T[A] = Future(a)
override def bind[A, B](fa: T[A])(f: A => T[B]): T[B] = fa.flatMap(a => f(a.asInstanceOf[A]))
}
def execute[D](operations: T[D]): Future[D] = operations.asInstanceOf[Future[D]]
def noAction[V](v: V): T[V] = Future.successful(v)
def customAction[R](action: => Future[R]): T[R] = action
}
class SlickDal(database: Database, executionContext: ExecutionContext) extends Dal {
import database.profile.api._
implicit val exec = executionContext
override type T[_] = slick.dbio.DBIO[_]
val monadT: Monad[T] = new Monad[T] {
override def point[A](a: => A): T[A] = DBIO.successful(a)
override def bind[A, B](fa: T[A])(f: A => T[B]): T[B] = fa.flatMap(a => f(a.asInstanceOf[A]))
}
def execute[D](readOperations: T[D]): Future[D] = {
database.database.run(readOperations.asInstanceOf[slick.dbio.DBIO[D]].transactionally)
}
def noAction[V](v: V): slick.dbio.DBIO[V] = DBIO.successful(v)
def customAction[R](action: => Future[R]): T[R] = DBIO.from(action)
}
}
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