package calendarops

import (
	"errors"

	basetypes "code.apps.glenux.net/glenux/kiwimix/pkg/basetypes"
)

// IntersectCalendarOperation is an operation that intersects a calendar with
// another
type IntersectCalendarOperation struct{}

// Ensure IntersectCalendarOperation implements CalendarOperation
var _ CalendarOperation = (*IntersectCalendarOperation)(nil)

func (op IntersectCalendarOperation) Execute(calendars ...basetypes.Calendar) (basetypes.Calendar, error) {
	if len(calendars) != 2 {
		return basetypes.Calendar{}, errors.New("Difference operation requires exactly two calendars")
	}
	// Do your union operation here and return the new union basetypes.
	return calendars[0], nil // Replace this with actual implementation
}