package airport

import (
	"fmt"
	"time"
)

var prohibitedItems = map[string]bool{"Knife": true, "Gun": true, "Explosives": true}

type SecurityCheck struct {
	processingTime time.Duration
	//TODO: extend
}

func NewSecurityCheck(processingTime time.Duration) SecurityCheck {
	return SecurityCheck{
		processingTime: processingTime,
	}
}

// processes one passenger at a time. Each passenger must at least spend the processingTime at the security check
func (sc *SecurityCheck) Start() {
}

// returns an error if
//   - the passenger has no boarding pass
//   - the passenger's boardings pass does not match the name
//   - the passenger carries a prohibited item
func (sc SecurityCheck) Process(p Passenger) error {

	time.Sleep(sc.processingTime)

	if p.BoardingPass == nil {
		return fmt.Errorf("%v has no boarding pass!", p.Name)
	}
	if p.BoardingPass.Name != p.Name {
		return fmt.Errorf("Name on boaring pass (%v) doesn't match with passengers name (%v)!", p.BoardingPass.Name, p.Name)
	}
	for bagNr, bag := range p.Bags {
		for _, item := range bag.Items {
			if prohibitedItems[item] {
				return fmt.Errorf("Found %v in bag %v which is a prohibited item!", item, bagNr)
			}
		}
	}

	for _, item := range p.CarryOnItems {
		if prohibitedItems[item] {
			return fmt.Errorf("Found %v on %v which is a prohibited item!", item, p.Name)
		}
	}

	return nil
}