package provision

import (
	"context"
	"errors"

	"github.com/carlosframework/platform/internal/controlname"
	"github.com/carlosframework/platform/internal/release"
)

type RetireRef struct {
	Family, Account, App, Host, Name, By string
	// Required by rollbacks: never retire a successor to the failed attempt.
	Incarnation string
}
type ClaimRetirer interface {
	RetireRecord(context.Context, RetireRef) error
}
type RetireOptions struct {
	HostClaim bool
	Claims    ClaimRetirer
}

var ErrClaimRetirer = errors.New("provision: claim retirement unavailable")

func RetireRecord(ctx context.Context, s release.Store, ref RetireRef, opt RetireOptions) error {
	if !opt.HostClaim {
		switch ref.Family {
		case "instance":
			return DeleteRecord(ctx, s, ref.Account, ref.App, ref.Host)
		case "sidecar":
			return DeleteSidecarRecord(ctx, s, ref.Account, ref.App, ref.Name)
		default:
			return ErrClaimRetirer
		}
	}
	if opt.Claims == nil || !controlname.ValidAccount(ref.Account) || !controlname.ValidApp(ref.App) || !controlname.ValidHostShape(ref.Host) {
		return ErrClaimRetirer
	}
	switch ref.Family {
	case "instance":
		if ref.Name != "" {
			return ErrClaimRetirer
		}
	case "sidecar":
		if !controlname.ValidLabel(ref.Name) || ref.Host != SidecarHost(ref.Name, ref.App, ref.Account) {
			return ErrClaimRetirer
		}
	default:
		return ErrClaimRetirer
	}
	return opt.Claims.RetireRecord(ctx, ref)
}