using CourseWork_EredavkinRA;
using System.Xml.Linq;


namespace CourseWorkEreda;

public class ArrayManager 
{

    public StateStorage storage;
    private ArrayDeque? stack;
   
    public ArrayManager(ArrayDequeParameters parameters)
    {
        stack = new ArrayDeque(parameters.Number);
        storage = new StateStorage();
        
    }
    
    public IEnumerable<ArrayDequeState> GetStates()
    {
        return storage.GetStates();
    }
    public void ClearStates()
    {
        storage.ClearStates();
    }
    public void SetCurrentStateToLast()
    {
        var lastState = storage.GetLastState();
        if (lastState != null)
        {
            stack = new ArrayDeque(10);
            foreach (var item in lastState.Array)
            {
                stack.PushFront(item);
            }
        }
    }
    public StateStorage GetStorage()
    {
        return storage;
    }
    public void SetState(ArrayDequeState state)
    {
        stack.SetMemento(state);
    } 

    public void FrontPush(int element)
    {
        stack.PushFront(element);
        ArrayDequeState state = stack.CreateMemento();
        state.operation = Operation.pushFront;
        storage.AddState(state);

        state = stack.CreateMemento();
        storage.AddState(stack.CreateMemento(), false);
    }
    public void BackPush(int element)
    {
        stack.PushBack(element);
        ArrayDequeState state = stack.CreateMemento();
        state.operation = Operation.pushBack;
        storage.AddState(state);

        state = stack.CreateMemento();
        storage.AddState(stack.CreateMemento(), false);
    }

    public void PopBack()
    {
        stack.PopBack();
        ArrayDequeState state = stack.CreateMemento();
        state.operation = Operation.popBack;
        storage.AddState(state);

        state = stack.CreateMemento();
        storage.AddState(stack.CreateMemento(), false);
    }
    public void PopFront()
    {
        stack.PopFront();
        ArrayDequeState state = stack.CreateMemento();
        state.operation = Operation.popFront;
        storage.AddState(state);

        state = stack.CreateMemento();
        storage.AddState(stack.CreateMemento(), false);
    }
    public bool IsEmpty()
    {
        return stack.IsEmpty();
    }
    public StateStorage StepForward()
    {
        storage.StepForward();
        return storage;
    }

    public StateStorage StepBackward()
    {
        storage.StepBackward();
        return storage;
    }


}