package hostclaim

// QueueRelocationRelease records a stop-only obligation before requesting root
// evidence. The caller supplies a stable retirement identity for this release.
func QueueRelocationRelease(opID, box, region, retirement string) func(*Claim) error {
	return func(c *Claim) error {
		if c == nil || c.Holder == nil || c.Op.ID != opID || opID == "" || c.Op.Kind != KindRelocating || c.Op.Phase != "releasing" || c.Op.Exec != box || c.Op.Intent["source_box"] != box || c.Op.Intent["region"] != region || !validBoxReference(box) || box == "none" || region == "" || retirement == "" {
			return ErrWrongState
		}
		for _, o := range c.Obligations {
			if o.ID == "relocation-release" {
				if o.Kind == "relocation-release" && o.Op == opID && o.Box == box && o.Region == region && o.Owner == "region:"+region && o.Park == nil && o.Retirement == retirement {
					return nil
				}
				return ErrWrongState
			}
		}
		if c.Op.Journal["release_stop_receipt"] != "" {
			return ErrWrongState
		}
		c.Obligations = append(c.Obligations, Obligation{ID: "relocation-release", Kind: "relocation-release", Op: opID, Box: box, Region: region, Owner: "region:" + region, Retirement: retirement})
		return nil
	}
}