using Chickensoft.Collections;
using System;
using Zennysoft.Ma.Adapter;

namespace Zennysoft.Game.Ma;

public class DefenseComponent : IDefenseComponent
{
  public IAutoProp<int> CurrentDefense => _currentDefense;

  public IAutoProp<int> MaximumDefense => _maximumDefense;

  private readonly AutoProp<int> _currentDefense;

  private readonly AutoProp<int> _maximumDefense;

  private readonly int _initialValue;

  public DefenseComponent(int defenseValue)
  {
    _maximumDefense = new AutoProp<int>(defenseValue);
    _currentDefense = new AutoProp<int>(defenseValue);
    _initialValue = defenseValue;
  }

  public void Reset()
  {
    _maximumDefense.OnNext(_initialValue);
    _currentDefense.OnNext(_initialValue);
  }

  public void Restore(int restoreAmount)
  {
    var cappedAmount = Math.Min(restoreAmount + _currentDefense.Value, _maximumDefense.Value);
    _currentDefense.OnNext(cappedAmount);
  }

  public void Reduce(int reduceAmount)
  {
    var cappedAmount = Math.Max(_currentDefense.Value - reduceAmount, 0);
    _currentDefense.OnNext(cappedAmount);
  }

  public void SetDefense(int attack)
  {
    var cappedAmount = Math.Min(attack, _maximumDefense.Value);
    _currentDefense.OnNext(cappedAmount);
  }

  public void RaiseMaximumDefense(int raiseAmount)
  {
    _maximumDefense.OnNext(raiseAmount);
    Restore(raiseAmount);
  }
}