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path: root/src/main/scala/xyz/driver/pdsuicommon/domain/User.scala
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package xyz.driver.pdsuicommon.domain

import java.math.BigInteger
import java.security.SecureRandom
import java.time.LocalDateTime

import xyz.driver.pdsuicommon.logging._
import xyz.driver.pdsuicommon.domain.User.Role
import xyz.driver.pdsuicommon.utils.Utils

final case class User(id: StringId[User],
                      email: Email,
                      name: String,
                      role: Role,
                      passwordHash: PasswordHash,
                      latestActivity: Option[LocalDateTime],
                      deleted: Option[LocalDateTime])

object User {

  sealed trait Role extends Product with Serializable {

    /**
      * Bit representation of this role
      */
    def bit: Int

    def is(that: Role): Boolean = this == that

    def oneOf(roles: Role*): Boolean = roles.contains(this)

    def oneOf(roles: Set[Role]): Boolean = roles.contains(this)
  }

  object Role extends PhiLogging {
    case object RecordAdmin            extends Role { val bit = 1 << 0  }
    case object RecordCleaner          extends Role { val bit = 1 << 1  }
    case object RecordOrganizer        extends Role { val bit = 1 << 2  }
    case object DocumentExtractor      extends Role { val bit = 1 << 3  }
    case object TrialSummarizer        extends Role { val bit = 1 << 4  }
    case object CriteriaCurator        extends Role { val bit = 1 << 5  }
    case object TrialAdmin             extends Role { val bit = 1 << 6  }
    case object EligibilityVerifier    extends Role { val bit = 1 << 7  }
    case object TreatmentMatchingAdmin extends Role { val bit = 1 << 8  }
    case object RoutesCurator          extends Role { val bit = 1 << 9  }
    case object SystemUser             extends Role { val bit = 1 << 10 }
    case object ResearchOncologist     extends Role { val bit = 1 << 11 }

    val RepRoles = Set[Role](RecordAdmin, RecordCleaner, RecordOrganizer, DocumentExtractor)

    val TcRoles = Set[Role](TrialSummarizer, CriteriaCurator, TrialAdmin)

    val TreatmentMatchingRoles = Set[Role](RoutesCurator, EligibilityVerifier, TreatmentMatchingAdmin)

    val PepRoles = Set[Role](ResearchOncologist)

    val All = RepRoles ++ TcRoles ++ TreatmentMatchingRoles ++ PepRoles + SystemUser

    def apply(bitMask: Int): Role = {
      def extractRole(role: Role): Set[Role] =
        if ((bitMask & role.bit) != 0) Set(role) else Set.empty[Role]

      val roles = All.flatMap(extractRole)
      roles.size match {
        case 1 => roles.head
        case _ =>
          logger.error(phi"Can't convert a bit mask ${Unsafe(bitMask)} to any role")
          throw new IllegalArgumentException()
      }
    }

    implicit def toPhiString(x: Role): PhiString = Unsafe(Utils.getClassSimpleName(x.getClass))
  }

  implicit def toPhiString(x: User): PhiString = {
    import x._
    phi"User(id=$id, role=$role)"
  }

  // SecureRandom is thread-safe, see the implementation
  private val random = new SecureRandom()

  def createPassword: String = new BigInteger(240, random).toString(32)

}