Stamina

using Game.SaveStorages;
using Game.SaveStorages.Paths;
using Game.Tools.Extensions;
using MalbersAnimations.Controller;
using UnityEngine;

namespace Game.Stats.Stamina
{
    public sealed class Stamina : MonoBehaviour
    {
        [SerializeField, Min(1)] private int _default = 100;
        [SerializeField, Min(1)] private int _degenerate = 2;
        [SerializeField, Min(1)] private int _regenerate = 1;
        [SerializeField] private Bar _view;
        [SerializeField] private MAnimal _animal;

        private ISaveStorage<int> _maxValueStorage;
        private Stat _stat;

        private void Awake()
        {
            _maxValueStorage = new BinaryStorage<int>(new Path(nameof(Stamina)));

            _stat = Stat();
        }

        private void Update()
        {
            if (_animal.MovementDetected)
            {
                if (_animal.Sprint)
                    _stat.Subtract(_degenerate);
            }
            else
            {
                _stat.Add(_regenerate);
            }
        }

        private Stat Stat()
        {
            int max = _maxValueStorage.HasSave()
                ? _maxValueStorage.Load()
                : _default;

            IStatChanged statEmpty = new StatEmpty(new StatEmptyCallback(DisableSprint));
            IStatChanged statNotEmpty = new StatNotEmpty(new StatNotEmptyCallback(EnableSprint));
            IStatChanged textView = new StatChangedCallback(_view.Visualize);
            IStatChanged[] changes = { statEmpty, statNotEmpty, textView };
            IStatChanged statChanged = new CompositeStatChanged(changes);

            return new Stat(max, statChanged);
        }

        private void DisableSprint() => _animal.UseSprint = false;

        private void EnableSprint() => _animal.UseSprint = true;

        public void IncreaseMaxValue(int value)
        {
            value.ThrowExceptionIfLessThanZero();

            _maxValueStorage.Save(value);

            _stat = Stat();
        }
    }
}