package handlers

const (
	// archiveRotationNone is the archive rotation that keeps a
	// database target's archive in one file. A stored empty rotation
	// means the same.
	archiveRotationNone = "none"

	// tmplKeyArchiveRotationChoices is the template data key for the
	// entries of a page's archive rotation select.
	tmplKeyArchiveRotationChoices = "ArchiveRotationChoices"
)

// archiveRotationChoices lists the archive rotations offered by the
// new webhook page, the add target form and the target edit form.
func archiveRotationChoices() []archiveChoice {
	return []archiveChoice{
		{Value: archiveRotationNone, Label: archiveRotationNone},
		{Value: "monthly", Label: "monthly"},
		{Value: "daily", Label: "daily"},
		{Value: "hourly", Label: "hourly"},
	}
}

// archiveRotationOptions returns the choices with rotation selected;
// an empty rotation, or one that is not a choice, selects none. A
// stored rotation is always a choice: the forms refuse any other.
func archiveRotationOptions(rotation string) []archiveChoice {
	options := archiveRotationChoices()

	for i := range options {
		if options[i].Value == rotation {
			options[i].Selected = true

			return options
		}
	}

	options[0].Selected = true

	return options
}