import java.util.ArrayList;

$/**$

$*$ Class Safe $-$ simulates the behavior of a real safe.

$*$

$*$ This class interacts with the SafeState class to model the functionality of a safe,

$*$ allowing users to perform actions such as opening and locking the safe.

$*$

$*$ @author Simon Pyne

$*$ @version $8\mathrm{.}12\mathrm{.}23$

$*/$

public class Safe $\{$

$//$ Private fields

private SafeState state; $//$ Controls the state of the safe

private int maxItems; $//$ Maximum number of items that can be stored in the safe

$//$ Public field for testing purposes

public ArrayList contents; $//$ Keeps a record of items in the safe

$/**$

$*$ Constructor for objects of class Safe.

$*$ Initializes the SafeState and sets the maximum number of items to a default value.

$*/$

public Safe$()\{$

this$(10)$; $//$ Call the other constructor with a default value for maxItems

$\}$

$/**$

$*$ Constructor for objects of class Safe with a specified maximum number of items.

$*$

$*$ @param aMaxItems The maximum number of items the safe can hold.

$*/$

public Safe$($int aMaxItems$)\{$

state $=$ new SafeState$()$;

maxItems $=$ aMaxItems;

contents $=$ new ArrayList$<>()$;

$\}$

$/**$

$*$ Add an item to the safe contents if the safe is not full.

$*$

$*$ @param item The item to be added to the safe.

$*/$

public void addToContents$($String item$)\{$

if $($contents$.$size$()<$ maxItems$)\{$

contents.add$($item$)$;

$\}$

$//$ If the safe is full, do nothing

$\}$

$/**$

$*$ Remove an item from the safe contents if it exists.

$*$

$*$ @param item The item to be removed from the safe.

$*/$

public void removeFromContents$($String item$)\{$

if $($contents$.$contains$($item$))\{$

contents.remove$($item$)$;

System.out.println$("$Removed item"$)$;

$\}$ else $\{$

System.out.println$("$Item $"+$ item $+"$ not in safe"$)$;

$\}$

$\}$

$/**$

$*$ Display all items currently stored in the safe contents.

$*/$

public void display$()\{$

for $($String item : contents$)\{$

System.out.println$($item$)$;

$\}$

$\}$

$/**$

$*$ Remove all items from the safe, one at a time.

$*$ Prints "Removed item" after each item is removed.

$*/$

public void empty$()\{$

while $(!$contents.isEmpty$())\{$

String removedItem $=$ contents.remove$(0)$;

System.out.println$("$Removed item: $"+$ removedItem$)$;

$\}$

$\}$

$/**$

$*$ Attempt to open the safe using a provided code.

$*$

$*$ @param code The code to attempt to open the safe.

$*$ @return True if the safe is now open, false otherwise.

$*/$

public boolean open$($String code$)\{$

return state.open$($code$)$;

$\}$

$/**$

$*$ Attempt to lock the safe using a provided code.

$*$

$*$ @param code The code to attempt to lock the safe.

$*$ @return True if the safe is now locked, false otherwise.

$*/$

public boolean lock$($String code$)\{$

return state.lock$($code$)$;

$\}$

$\}$