using System;
using System.Collections.Generic;
using Server.ContextMenus;
using Server.Gumps;
using Server.Mobiles;
using Server.Multis;
using Server.Targeting;

namespace Server.Items
{
  public class VendorRentalContract : Item
  {
    private VendorRentalDuration m_Duration;

    private Mobile m_Offeree;
    private Timer m_OfferExpireTimer;

    [Constructible]
    public VendorRentalContract() : base(0x14F0)
    {
      Weight = 1.0;
      Hue = 0x672;

      m_Duration = VendorRentalDuration.Instances[0];
      Price = 1500;
    }

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

    public override int LabelNumber => 1062332; // a vendor rental contract

    public VendorRentalDuration Duration
    {
      get => m_Duration;
      set
      {
        if (value != null)
          m_Duration = value;
      }
    }

    [CommandProperty(AccessLevel.GameMaster)]
    public int Price{ get; set; }

    [CommandProperty(AccessLevel.GameMaster)]
    public bool LandlordRenew{ get; set; }

    public Mobile Offeree
    {
      get => m_Offeree;
      set
      {
        if (m_OfferExpireTimer != null)
        {
          m_OfferExpireTimer.Stop();
          m_OfferExpireTimer = null;
        }

        m_Offeree = value;

        if (value != null)
        {
          m_OfferExpireTimer = new OfferExpireTimer(this);
          m_OfferExpireTimer.Start();
        }

        InvalidateProperties();
      }
    }

    public override void GetProperties(ObjectPropertyList list)
    {
      base.GetProperties(list);

      if (Offeree != null)
        list.Add(1062368, Offeree.Name); // Being Offered To ~1_NAME~
    }

    public bool IsLandlord(Mobile m)
    {
      if (IsLockedDown)
      {
        BaseHouse house = BaseHouse.FindHouseAt(this);

        if (house != null && house.DecayType != DecayType.Condemned)
          return house.IsOwner(m);
      }

      return false;
    }

    public bool IsUsableBy(Mobile from, bool byLandlord, bool byBackpack, bool noOfferee, bool sendMessage)
    {
      if (Deleted || !from.CheckAlive(sendMessage))
        return false;

      if (noOfferee && Offeree != null)
      {
        if (sendMessage)
          from.SendLocalizedMessage(1062343); // That item is currently in use.

        return false;
      }

      if (byBackpack && IsChildOf(from.Backpack))
        return true;

      if (byLandlord && IsLandlord(from))
      {
        if (from.Map != Map || !from.InRange(this, 5))
        {
          if (sendMessage)
            from.SendLocalizedMessage(501853); // Target is too far away.

          return false;
        }

        return true;
      }

      return false;
    }

    public override void OnDelete()
    {
      if (IsLockedDown)
      {
        BaseHouse house = BaseHouse.FindHouseAt(this);

        house?.VendorRentalContracts.Remove(this);
      }
    }

    public override void OnDoubleClick(Mobile from)
    {
      if (Offeree != null)
      {
        from.SendLocalizedMessage(1062343); // That item is currently in use.
      }
      else if (!IsLockedDown)
      {
        if (!IsChildOf(from.Backpack))
        {
          from.SendLocalizedMessage(1062334); // This item must be in your backpack to be used.
          return;
        }

        BaseHouse house = BaseHouse.FindHouseAt(from);

        if (house == null || !house.IsOwner(from))
        {
          from.SendLocalizedMessage(
            1062333); // You must be standing inside of a house that you own to make use of this contract.
        }
        else if (!house.IsAosRules)
        {
          from.SendMessage("Rental contracts can only be placed in AOS-enabled houses.");
        }
        else if (!house.Public)
        {
          from.SendLocalizedMessage(1062335); // Rental contracts can only be placed in public houses.
        }
        else if (!house.CanPlaceNewVendor())
        {
          from.SendLocalizedMessage(1062352); // You do not have enough storage available to place this contract.
        }
        else
        {
          from.SendLocalizedMessage(1062337); // Target the exact location you wish to rent out.
          from.Target = new RentTarget(this);
        }
      }
      else if (IsLandlord(from))
      {
        if (from.InRange(this, 5))
        {
          from.CloseGump<VendorRentalContractGump>();
          from.SendGump(new VendorRentalContractGump(this, from));
        }
        else
        {
          from.SendLocalizedMessage(501853); // Target is too far away.
        }
      }
    }

    public override void GetContextMenuEntries(Mobile from, List<ContextMenuEntry> list)
    {
      base.GetContextMenuEntries(from, list);

      if (IsUsableBy(from, true, true, true, false)) list.Add(new ContractOptionEntry(this));
    }

    public override void Serialize(GenericWriter writer)
    {
      base.Serialize(writer);

      writer.WriteEncodedInt(0); // version

      writer.WriteEncodedInt(m_Duration.ID);

      writer.Write(Price);
      writer.Write(LandlordRenew);
    }

    public override void Deserialize(GenericReader reader)
    {
      base.Deserialize(reader);

      int version = reader.ReadEncodedInt();

      int durationID = reader.ReadEncodedInt();
      if (durationID < VendorRentalDuration.Instances.Length)
        m_Duration = VendorRentalDuration.Instances[durationID];
      else
        m_Duration = VendorRentalDuration.Instances[0];

      Price = reader.ReadInt();
      LandlordRenew = reader.ReadBool();
    }

    private class ContractOptionEntry : ContextMenuEntry
    {
      private VendorRentalContract m_Contract;

      public ContractOptionEntry(VendorRentalContract contract) : base(6209)
      {
        m_Contract = contract;
      }

      public override void OnClick()
      {
        Mobile from = Owner.From;

        if (m_Contract.IsUsableBy(from, true, true, true, true))
        {
          from.CloseGump<VendorRentalContractGump>();
          from.SendGump(new VendorRentalContractGump(m_Contract, from));
        }
      }
    }

    private class RentTarget : Target
    {
      private VendorRentalContract m_Contract;

      public RentTarget(VendorRentalContract contract) : base(-1, false, TargetFlags.None)
      {
        m_Contract = contract;
      }

      protected override void OnTarget(Mobile from, object targeted)
      {
        if (!m_Contract.IsUsableBy(from, false, true, true, true))
          return;

        if (!(targeted is IPoint3D location))
          return;

        Point3D pLocation = new Point3D(location);
        Map map = from.Map;

        BaseHouse house = BaseHouse.FindHouseAt(pLocation, map, 0);

        if (house == null || !house.IsOwner(from))
        {
          from.SendLocalizedMessage(1062338); // The location being rented out must be inside of your house.
        }
        else if (BaseHouse.FindHouseAt(from) != house)
        {
          from.SendLocalizedMessage(
            1062339); // You must be located inside of the house in which you are trying to place the contract.
        }
        else if (!house.IsAosRules)
        {
          from.SendMessage("Rental contracts can only be placed in AOS-enabled houses.");
        }
        else if (!house.Public)
        {
          from.SendLocalizedMessage(1062335); // Rental contracts can only be placed in public houses.
        }
        else if (house.DecayType == DecayType.Condemned)
        {
          from.SendLocalizedMessage(1062468); // You cannot place a contract in a condemned house.
        }
        else if (!house.CanPlaceNewVendor())
        {
          from.SendLocalizedMessage(1062352); // You do not have enought storage available to place this contract.
        }
        else if (!map.CanFit(pLocation, 16, false, false))
        {
          from.SendLocalizedMessage(1062486); // A vendor cannot exist at that location.  Please try again.
        }
        else
        {
          BaseHouse.IsThereVendor(pLocation, map, out bool vendor, out bool contract);

          if (vendor)
          {
            from.SendLocalizedMessage(
              1062342); // You may not place a rental contract at this location while other beings occupy it.
          }
          else if (contract)
          {
            from.SendLocalizedMessage(
              1062341); // That location is cluttered.  Please clear out any objects there and try again.
          }
          else
          {
            m_Contract.MoveToWorld(pLocation, map);

            if (!house.LockDown(from, m_Contract)) from.AddToBackpack(m_Contract);
          }
        }
      }

      protected override void OnTargetCancel(Mobile from, TargetCancelType cancelType)
      {
        from.SendLocalizedMessage(1062336); // You decide not to place the contract at this time.
      }
    }

    private class OfferExpireTimer : Timer
    {
      private VendorRentalContract m_Contract;

      public OfferExpireTimer(VendorRentalContract contract) : base(TimeSpan.FromSeconds(30.0))
      {
        m_Contract = contract;

        Priority = TimerPriority.OneSecond;
      }

      protected override void OnTick()
      {
        Mobile offeree = m_Contract.Offeree;

        if (offeree != null)
        {
          offeree.CloseGump<VendorRentalOfferGump>();

          m_Contract.Offeree = null;
        }
      }
    }
  }
}