using System;
using System.Collections.Generic;
using Server.Mobiles;

namespace Server.Items
{
  public class PoolOfAcid : Item
  {
    private readonly TimeSpan m_Duration;
    private readonly int m_MinDamage;
    private readonly int m_MaxDamage;
    private readonly DateTime m_Created;
    private bool m_Drying;
    private readonly Timer m_Timer;

    [Constructible]
    public PoolOfAcid() : this(TimeSpan.FromSeconds(10.0), 2, 5)
    {
    }

    public override string DefaultName => "a pool of acid";

    [Constructible]
    public PoolOfAcid(TimeSpan duration, int minDamage, int maxDamage)
      : base(0x122A)
    {
      Hue = 0x3F;
      Movable = false;

      m_MinDamage = minDamage;
      m_MaxDamage = maxDamage;
      m_Created = DateTime.UtcNow;
      m_Duration = duration;

      m_Timer = Timer.DelayCall(TimeSpan.Zero, TimeSpan.FromSeconds(1), OnTick);
    }

    public override void OnAfterDelete()
    {
      m_Timer?.Stop();
    }

    private void OnTick()
    {
      DateTime now = DateTime.UtcNow;
      TimeSpan age = now - m_Created;

      if (age > m_Duration)
      {
        Delete();
      }
      else
      {
        if (!m_Drying && age > m_Duration - age)
        {
          m_Drying = true;
          ItemID = 0x122B;
        }

        List<Mobile> toDamage = new List<Mobile>();

        foreach (Mobile m in GetMobilesInRange(0))
          if (m.Alive && !m.IsDeadBondedPet && (!(m is BaseCreature bc) || bc.Controlled || bc.Summoned))
            toDamage.Add(m);

        for (int i = 0; i < toDamage.Count; i++)
          Damage(toDamage[i]);
      }
    }
    public override bool OnMoveOver(Mobile m)
    {
      Damage(m);
      return true;
    }

    public void Damage(Mobile m)
    {
      m.Damage(Utility.RandomMinMax(m_MinDamage, m_MaxDamage));
    }

    public PoolOfAcid(Serial serial) : base(serial)
    {
    }

    public override void Serialize(IGenericWriter writer)
    {
      // Don't serialize these
    }

    public override void Deserialize(IGenericReader reader)
    {
    }
  }
}