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implements suspended state with subtyping #4

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implements suspended state with subtyping #4

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19 changes: 13 additions & 6 deletions fp/src/main/scala/eu/thoughtway/fsm/fp/domain/model/Organisation.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@ package eu.thoughtway.fsm.fp.domain.model

import java.time.LocalDateTime

final case class Organisation[Status](
final case class Organisation[+Status](
id: String,
created: LocalDateTime,
status: Status,
Expand All @@ -16,15 +16,22 @@ object Organisation {
sealed trait Defined extends Status
case object Defined extends Defined

sealed trait Enabled extends Status
sealed trait EnabledOrSuspended extends Status
sealed trait EnabledOrDisabled extends Status

sealed trait Enabled extends EnabledOrSuspended with EnabledOrDisabled
case object Enabled extends Enabled

sealed trait Disabled extends Status
sealed trait Suspended extends EnabledOrSuspended
case object Suspended extends Suspended

sealed trait Disabled extends EnabledOrDisabled
case object Disabled extends Disabled

type OrganisationDefined = Organisation[Defined]
type OrganisationEnabled = Organisation[Enabled]
type OrganisationDisabled = Organisation[Disabled]
type OrganisationDefined = Organisation[Defined]
type OrganisationEnabled = Organisation[Enabled]
type OrganisationSuspended = Organisation[Suspended]
type OrganisationDisabled = Organisation[Disabled]

def apply(id: String): OrganisationDefined =
new Organisation(id, LocalDateTime.now(), Defined, 0)
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19 changes: 15 additions & 4 deletions fp/src/main/scala/eu/thoughtway/fsm/fp/domain/service/OrganisationService.scala
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Expand Up @@ -10,11 +10,14 @@ trait OrganisationService {
def credit(org: OrganisationEnabled)(
amount: BigDecimal
): OrganisationEnabled
def debit(org: OrganisationEnabled)(
def debit(org: Organisation[EnabledOrSuspended])(
amount: BigDecimal
): OrganisationEnabled
): Organisation[EnabledOrSuspended]
def disable(org: OrganisationEnabled): OrganisationDisabled

def suspend(org: Organisation[EnabledOrDisabled]): OrganisationSuspended
def resume(org: OrganisationSuspended): OrganisationEnabled

def expedite(id: String)(amount: BigDecimal): OrganisationEnabled =
(define _ andThen approve _ andThen credit)(id)(amount)
}
Expand All @@ -31,11 +34,19 @@ trait OrganisationServiceImpl extends OrganisationService {
): OrganisationEnabled =
org.copy(balance = org.balance + amount)

override def debit(org: OrganisationEnabled)(
override def debit(org: Organisation[EnabledOrSuspended])(
amount: BigDecimal
): OrganisationEnabled =
): Organisation[EnabledOrSuspended] =
org.copy(balance = org.balance - amount)

override def suspend(
org: Organisation[EnabledOrDisabled]
): OrganisationSuspended =
org.copy(status = Suspended)

override def resume(org: OrganisationSuspended): OrganisationEnabled =
org.copy(status = Enabled)

override def disable(org: OrganisationEnabled): OrganisationDisabled =
org.copy(status = Disabled)
}