package gitbucket.core.api

import gitbucket.core.service.ProtectedBranchService
import org.json4s._

/** https://developer.github.com/v3/repos/#enabling-and-disabling-branch-protection */
case class ApiBranchProtection(enabled: Boolean, required_status_checks: Option[ApiBranchProtection.Status]) {
  def status: ApiBranchProtection.Status = required_status_checks.getOrElse(ApiBranchProtection.statusNone)
}

object ApiBranchProtection {

  /** form for enabling-and-disabling-branch-protection */
  case class EnablingAndDisabling(protection: ApiBranchProtection)

  def apply(info: ProtectedBranchService.ProtectedBranchInfo): ApiBranchProtection =
    ApiBranchProtection(
      enabled = info.enabled,
      required_status_checks = Some(
        Status(EnforcementLevel(info.enabled && info.contexts.nonEmpty, info.includeAdministrators), info.contexts)
      )
    )
  val statusNone = Status(Off, Seq.empty)
  case class Status(enforcement_level: EnforcementLevel, contexts: Seq[String])
  sealed class EnforcementLevel(val name: String)
  case object Off extends EnforcementLevel("off")
  case object NonAdmins extends EnforcementLevel("non_admins")
  case object Everyone extends EnforcementLevel("everyone")
  object EnforcementLevel {
    def apply(enabled: Boolean, includeAdministrators: Boolean): EnforcementLevel =
      if (enabled) {
        if (includeAdministrators) {
          Everyone
        } else {
          NonAdmins
        }
      } else {
        Off
      }
  }

  implicit val enforcementLevelSerializer = new CustomSerializer[EnforcementLevel](
    format =>
      (
        {
          case JString("off")        => Off
          case JString("non_admins") => NonAdmins
          case JString("everyone")   => Everyone
        }, {
          case x: EnforcementLevel => JString(x.name)
        }
    )
  )
}