using System;
using System.Collections.Generic;
using System.IO;
using ModernUO.Serialization;
using Server.Collections;
using Server.ContextMenus;
using Server.Engines.Harvest;
using Server.Mobiles;
using Server.Network;
using Server.Targeting;

namespace Server.Items;

[SerializationGenerator(0, false)]
public partial class TreasureMap : MapItem
{
    public const double LootChance = 0.01; // 1% chance to appear as loot

    private static Point2D[] _locations;
    private static Point2D[] _havenLocations;

    private static Type[][] _spawnTypes =
    {
        new[] { typeof(HeadlessOne), typeof(Skeleton) },
        new[] { typeof(Mongbat), typeof(Ratman), typeof(HeadlessOne), typeof(Skeleton), typeof(Zombie) },
        new[] { typeof(OrcishMage), typeof(Gargoyle), typeof(Gazer), typeof(HellHound), typeof(EarthElemental) },
        new[] { typeof(Lich), typeof(OgreLord), typeof(DreadSpider), typeof(AirElemental), typeof(FireElemental) },
        new[] { typeof(DreadSpider), typeof(LichLord), typeof(Daemon), typeof(ElderGazer), typeof(OgreLord) },
        new[] { typeof(LichLord), typeof(Daemon), typeof(ElderGazer), typeof(PoisonElemental), typeof(BloodElemental) },
        new[] { typeof(AncientWyrm), typeof(Balron), typeof(BloodElemental), typeof(PoisonElemental), typeof(Titan) }
    };

    [InvalidateProperties]
    [SerializableField(0)]
    [SerializedCommandProperty(AccessLevel.GameMaster)]
    private Mobile _completedBy;

    [InvalidateProperties]
    [SerializableField(1)]
    [SerializedCommandProperty(AccessLevel.GameMaster)]
    private int _level;

    [InvalidateProperties]
    [SerializableField(2)]
    [SerializedCommandProperty(AccessLevel.GameMaster)]
    private bool _completed;

    [InvalidateProperties]
    [SerializableField(3)]
    [SerializedCommandProperty(AccessLevel.GameMaster)]
    private Mobile _decoder;

    [InvalidateProperties]
    [SerializableField(4)]
    [SerializedCommandProperty(AccessLevel.GameMaster)]
    private Map _chestMap;

    [SerializableField(5)]
    [SerializedCommandProperty(AccessLevel.GameMaster)]
    private Point2D _chestLocation;

    [Constructible]
    public TreasureMap(int level, Map map)
    {
        _level = level;
        _chestMap = map;

        _chestLocation = level == 0 ? GetRandomHavenLocation() : GetRandomLocation();

        Width = 300;
        Height = 300;

        const int width = 600;
        const int height = 600;

        var x1 = ChestLocation.X - Utility.RandomMinMax(width / 4, width / 4 * 3);
        var y1 = ChestLocation.Y - Utility.RandomMinMax(height / 4, height / 4 * 3);

        if (x1 < 0)
        {
            x1 = 0;
        }

        if (y1 < 0)
        {
            y1 = 0;
        }

        var x2 = x1 + width;
        var y2 = y1 + height;

        if (x2 > 5119)
        {
            x2 = 5119;
        }

        if (y2 > 4095)
        {
            y2 = 4095;
        }

        x1 = x2 - width;
        y1 = y2 - height;

        Bounds = new Rectangle2D(x1, y1, width, height);
        Protected = true;

        AddWorldPin(ChestLocation.X, ChestLocation.Y);
    }

    public override int LabelNumber
    {
        get
        {
            if (_decoder != null)
            {
                if (_level == 6)
                {
                    return 1063453;
                }

                return 1041516 + _level;
            }

            if (_level == 6)
            {
                return 1063452;
            }

            return 1041510 + _level;
        }
    }

    public static Point2D GetRandomLocation()
    {
        if (_locations == null)
        {
            LoadLocations();
        }

        return _locations?.RandomElement() ?? Point2D.Zero;
    }

    public static Point2D GetRandomHavenLocation()
    {
        if (_havenLocations == null)
        {
            LoadLocations();
        }

        return _havenLocations?.RandomElement() ?? Point2D.Zero;
    }

    private static void LoadLocations()
    {
        var filePath = Path.Combine(Core.BaseDirectory, "Data/treasure.cfg");

        var list = new List<Point2D>();
        var havenList = new List<Point2D>();

        if (File.Exists(filePath))
        {
            using var ip = new StreamReader(filePath);
            string line;

            while ((line = ip.ReadLine()) != null)
            {
                try
                {
                    var split = line.Split(' ');

                    int x = Convert.ToInt32(split[0]), y = Convert.ToInt32(split[1]);

                    var loc = new Point2D(x, y);
                    list.Add(loc);

                    if (IsInHavenIsland(loc))
                    {
                        havenList.Add(loc);
                    }
                }
                catch
                {
                    // ignored
                }
            }
        }

        _locations = list.ToArray();
        _havenLocations = havenList.ToArray();
    }

    public static bool IsInHavenIsland(IPoint2D loc) => loc.X >= 3314 && loc.X <= 3814 && loc.Y >= 2345 && loc.Y <= 3095;

    public static BaseCreature Spawn(int level, Point3D p, bool guardian)
    {
        if (level >= 0 && level < _spawnTypes.Length)
        {
            BaseCreature bc;

            try
            {
                bc = _spawnTypes[level].RandomElement().CreateInstance<BaseCreature>();
            }
            catch
            {
                return null;
            }

            bc.Home = p;
            bc.RangeHome = 5;

            if (guardian && level == 0)
            {
                bc.Name = "a chest guardian";
                bc.Hue = 0x835;
            }

            return bc;
        }

        return null;
    }

    public static BaseCreature Spawn(int level, Point3D p, Map map, Mobile target, bool guardian)
    {
        if (map == null)
        {
            return null;
        }

        var c = Spawn(level, p, guardian);

        if (c != null)
        {
            var spawned = false;

            for (var i = 0; !spawned && i < 10; ++i)
            {
                var x = p.X - 3 + Utility.Random(7);
                var y = p.Y - 3 + Utility.Random(7);

                if (map.CanSpawnMobile(x, y, p.Z))
                {
                    c.MoveToWorld(new Point3D(x, y, p.Z), map);
                    spawned = true;
                }
                else
                {
                    var z = map.GetAverageZ(x, y);

                    if (map.CanSpawnMobile(x, y, z))
                    {
                        c.MoveToWorld(new Point3D(x, y, z), map);
                        spawned = true;
                    }
                }
            }

            if (!spawned)
            {
                c.Delete();
                return null;
            }

            if (target != null)
            {
                c.Combatant = target;
            }

            return c;
        }

        return null;
    }

    public static bool HasDiggingTool(Mobile m)
    {
        if (m.Backpack == null)
        {
            return false;
        }

        foreach (var tool in m.Backpack.FindItemsByType<BaseHarvestTool>())
        {
            if (tool.HarvestSystem == Mining.System)
            {
                return true;
            }
        }

        return false;
    }

    public void OnBeginDig(Mobile from)
    {
        if (_completed)
        {
            from.SendLocalizedMessage(503028); // The treasure for this map has already been found.
        }
        else if (_level == 0 && !CheckYoung(from))
        {
            from.SendLocalizedMessage(1046447); // Only a young player may use this treasure map.
        }
        /*
        else if (from != m_Decoder)
        {
          from.SendLocalizedMessage( 503016 ); // Only the person who decoded this map may actually dig up the treasure.
        }
        */
        else if (_decoder != from && !HasRequiredSkill(from))
        {
            // You did not decode this map and have no clue where to look for the treasure.
            from.SendLocalizedMessage(503031);
        }
        else if (!from.CanBeginAction<TreasureMap>())
        {
            from.SendLocalizedMessage(503020); // You are already digging treasure.
        }
        else if (from.Map != _chestMap)
        {
            from.SendLocalizedMessage(1010479); // You seem to be in the right place, but may be on the wrong facet!
        }
        else
        {
            from.SendLocalizedMessage(503033); // Where do you wish to dig?
            from.Target = new DigTarget(this);
        }
    }

    public override void OnDoubleClick(Mobile from)
    {
        if (!from.InRange(GetWorldLocation(), 2))
        {
            from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 1019045); // I can't reach that.
            return;
        }

        if (!_completed && _decoder == null)
        {
            Decode(from);
        }
        else
        {
            DisplayTo(from);
        }
    }

    private bool CheckYoung(Mobile from)
    {
        if (from.AccessLevel >= AccessLevel.GameMaster)
        {
            return true;
        }

        if (from is PlayerMobile mobile && mobile.Young)
        {
            return true;
        }

        if (from == Decoder)
        {
            Level = 1;
            from.SendLocalizedMessage(1046446); // This is now a level one treasure map.
            return true;
        }

        return false;
    }

    private double GetMinSkillLevel()
    {
        return _level switch
        {
            1 => -3.0,
            2 => 41.0,
            3 => 51.0,
            4 => 61.0,
            5 => 70.0,
            6 => 70.0,
            _ => 0.0
        };
    }

    private bool HasRequiredSkill(Mobile from) => from.Skills.Cartography.Value >= GetMinSkillLevel();

    public void Decode(Mobile from)
    {
        if (_completed || _decoder != null)
        {
            return;
        }

        if (_level == 0)
        {
            if (!CheckYoung(from))
            {
                from.SendLocalizedMessage(1046447); // Only a young player may use this treasure map.
                return;
            }
        }
        else
        {
            var minSkill = GetMinSkillLevel();

            if (from.Skills.Cartography.Value < minSkill)
            {
                from.SendLocalizedMessage(503013); // The map is too difficult to attempt to decode.
            }

            var maxSkill = minSkill + 60.0;

            if (!from.CheckSkill(SkillName.Cartography, minSkill, maxSkill))
            {
                from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 503018); // You fail to make anything of the map.
                return;
            }
        }

        from.LocalOverheadMessage(MessageType.Regular, 0x3B2, 503019); // You successfully decode a treasure map!
        Decoder = from;

        if (Core.AOS)
        {
            LootType = LootType.Blessed;
        }

        DisplayTo(from);
    }

    public override void DisplayTo(Mobile from)
    {
        if (_completed)
        {
            SendLocalizedMessageTo(from, 503014); // This treasure hunt has already been completed.
        }
        else if (_level == 0 && !CheckYoung(from))
        {
            from.SendLocalizedMessage(1046447); // Only a young player may use this treasure map.
            return;
        }
        else if (_decoder != from && !HasRequiredSkill(from))
        {
            // You did not decode this map and have no clue where to look for the treasure.
            from.SendLocalizedMessage(503031);
            return;
        }
        else
        {
            // The treasure is marked by the red pin. Grab a shovel and go dig it up!
            SendLocalizedMessageTo(from, 503017);
        }

        from.PlaySound(0x249);
        base.DisplayTo(from);
    }

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

        if (!_completed)
        {
            if (_decoder == null)
            {
                list.Add(new DecodeMapEntry());
            }
            else
            {
                list.Add(new OpenMapEntry());
                list.Add(new DigEntry(HasDiggingTool(from)));
            }
        }
    }

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

        list.Add(_chestMap == Map.Veridia ? 1041502 : 1041503); // for somewhere in Veridia : for somewhere in Trammel

        if (_completed)
        {
            list.Add(1041507, _completedBy?.RawName ?? "someone"); // completed by ~1_val~
        }
    }

    public override void OnSingleClick(Mobile from)
    {
        if (_completed)
        {
            from.NetState.SendMessageLocalizedAffix(
                Serial,
                ItemID,
                MessageType.Label,
                0x3B2,
                3,
                1048030,
                "",
                AffixType.Append,
                $" completed by {_completedBy?.RawName ?? "someone"}"
            );
        }
        else if (_decoder != null)
        {
            if (_level == 6)
            {
                LabelTo(from, 1063453);
            }
            else
            {
                LabelTo(from, 1041516 + _level);
            }
        }
        else
        {
            if (_level == 6)
            {
                LabelTo(from, 1041522, $"#{1063452}\t \t#{(_chestMap == Map.Veridia ? 1041502 : 1041503)}");
            }
            else
            {
                LabelTo(from, 1041522, $"#{1041510 + _level}\t \t#{(_chestMap == Map.Veridia ? 1041502 : 1041503)}");
            }
        }
    }

    [AfterDeserialization]
    private void AfterDeserialization()
    {
        if (Core.AOS && _decoder != null && LootType == LootType.Regular)
        {
            LootType = LootType.Blessed;
        }
    }

    private class DigTarget : Target
    {
        private readonly TreasureMap m_Map;

        public DigTarget(TreasureMap map) : base(6, true, TargetFlags.None) => m_Map = map;

        protected override void OnTarget(Mobile from, object targeted)
        {
            if (m_Map.Deleted)
            {
                return;
            }

            var map = m_Map._chestMap;

            if (m_Map._completed)
            {
                from.SendLocalizedMessage(503028); // The treasure for this map has already been found.
            }
            /*
            else if (from != m_Map.m_Decoder)
            {
              from.SendLocalizedMessage( 503016 ); // Only the person who decoded this map may actually dig up the treasure.
            }
            */
            else if (m_Map._decoder != from && !m_Map.HasRequiredSkill(from))
            {
                // You did not decode this map and have no clue where to look for the treasure.
                from.SendLocalizedMessage(503031);
            }
            else if (!from.CanBeginAction<TreasureMap>())
            {
                from.SendLocalizedMessage(503020); // You are already digging treasure.
            }
            else if (!HasDiggingTool(from))
            {
                from.SendLocalizedMessage(1114416); // You must have a digging tool to dig for treasure.
            }
            else if (from.Map != map)
            {
                from.SendLocalizedMessage(1010479); // You seem to be in the right place, but may be on the wrong facet!
            }
            else
            {
                var p = targeted as IPoint3D;

                var targ3D = (p as Item)?.GetWorldLocation() ?? new Point3D(p);

                var skillValue = from.Skills.Mining.Value;

                var maxRange = skillValue switch
                {
                    >= 100.0 => 4,
                    >= 81.0  => 3,
                    >= 51.0  => 2,
                    _        => 1
                };

                var loc = m_Map.ChestLocation;
                int x = loc.X, y = loc.Y;

                var chest3D0 = new Point3D(loc, 0);

                if (Utility.InRange(targ3D, chest3D0, maxRange))
                {
                    if (from.Location.X == x && from.Location.Y == y)
                    {
                        // The chest can't be dug up because you are standing on top of it.
                        from.SendLocalizedMessage(503030);
                    }
                    else if (map != null)
                    {
                        var z = map.GetAverageZ(x, y);

                        if (!map.CanFit(x, y, z, 16, true))
                        {
                            // You have found the treasure chest but something is keeping it from being dug up.
                            from.SendLocalizedMessage(503021);
                        }
                        else if (from.BeginAction<TreasureMap>())
                        {
                            new DigTimer(from, m_Map, new Point3D(x, y, z), map).Start();
                        }
                        else
                        {
                            from.SendLocalizedMessage(503020); // You are already digging treasure.
                        }
                    }
                }
                else if (m_Map.Level > 0)
                {
                    if (Utility.InRange(targ3D, chest3D0, 8)) // We're close, but not quite
                    {
                        from.SendLocalizedMessage(503032); // You dig and dig but no treasure seems to be here.
                    }
                    else
                    {
                        from.SendLocalizedMessage(503035); // You dig and dig but fail to find any treasure.
                    }
                }
                else
                {
                    if (Utility.InRange(targ3D, chest3D0, 8)) // We're close, but not quite
                    {
                        from.SendAsciiMessage(0x44, "The treasure chest is very close!");
                    }
                    else
                    {
                        var dir = Utility.GetDirection(targ3D, chest3D0);

                        var sDir = dir switch
                        {
                            Direction.North => "north",
                            Direction.Right => "northeast",
                            Direction.East  => "east",
                            Direction.Down  => "southeast",
                            Direction.South => "south",
                            Direction.Left  => "southwest",
                            Direction.West  => "west",
                            _               => "northwest"
                        };

                        from.SendAsciiMessage(0x44, $"Try looking for the treasure chest more to the {sDir}.");
                    }
                }
            }
        }
    }

    private class DigTimer : Timer
    {
        private Mobile m_From;
        private long m_LastMoveTime;
        private Map m_Map;
        private long m_NextActionTime;

        private long m_NextSkillTime;
        private long m_NextSpellTime;
        private TreasureMap m_TreasureMap;
        private TreasureMapChest m_Chest;

        private int m_Count;

        private TreasureChestDirt m_Dirt1;
        private TreasureChestDirt m_Dirt2;

        private Point3D m_Location;

        public DigTimer(Mobile from, TreasureMap treasureMap, Point3D location, Map map) : base(
            TimeSpan.Zero,
            TimeSpan.FromSeconds(1.0)
        )
        {
            m_From = from;
            m_TreasureMap = treasureMap;

            m_Location = location;
            m_Map = map;

            m_NextSkillTime = from.NextSkillTime;
            m_NextSpellTime = from.NextSpellTime;
            m_NextActionTime = from.NextActionTime;
            m_LastMoveTime = from.LastMoveTime;
        }

        private void Terminate()
        {
            Stop();
            m_From.EndAction<TreasureMap>();

            m_Chest?.Delete();
            m_Dirt1?.Delete();
            m_Dirt2?.Delete();
        }

        protected override void OnTick()
        {
            if (m_NextSkillTime != m_From.NextSkillTime || m_NextSpellTime != m_From.NextSpellTime ||
                m_NextActionTime != m_From.NextActionTime)
            {
                Terminate();
                return;
            }

            if (m_LastMoveTime != m_From.LastMoveTime)
            {
                // You cannot move around while digging up treasure. You will need to start digging anew.
                m_From.SendLocalizedMessage(503023);
                Terminate();
                return;
            }

            var z = m_Chest?.Z + m_Chest?.ItemData.Height ?? int.MinValue;
            var height = 16;

            if (z > m_Location.Z)
            {
                height -= z - m_Location.Z;
            }
            else
            {
                z = m_Location.Z;
            }

            if (!m_Map.CanFit(m_Location.X, m_Location.Y, z, height, true, true, false))
            {
                // You stop digging because something is directly on top of the treasure chest.
                m_From.SendLocalizedMessage(503024);
                Terminate();
                return;
            }

            m_Count++;

            m_From.RevealingAction();
            m_From.Direction = m_From.GetDirectionTo(m_Location);

            if (m_Count > 1 && m_Dirt1 == null)
            {
                m_Dirt1 = new TreasureChestDirt();
                m_Dirt1.MoveToWorld(m_Location, m_Map);

                m_Dirt2 = new TreasureChestDirt();
                m_Dirt2.MoveToWorld(new Point3D(m_Location.X, m_Location.Y - 1, m_Location.Z), m_Map);
            }

            if (m_Count == 5)
            {
                m_Dirt1.Turn1();
            }
            else if (m_Count == 10)
            {
                m_Dirt1.Turn2();
                m_Dirt2.Turn2();
            }
            else if (m_Count > 10)
            {
                if (m_Chest == null)
                {
                    m_Chest = new TreasureMapChest(m_From, m_TreasureMap.Level, true);
                    m_Chest.MoveToWorld(new Point3D(m_Location.X, m_Location.Y, m_Location.Z - 15), m_Map);
                }
                else
                {
                    m_Chest.Z++;
                }

                Effects.PlaySound(m_Chest.Location, m_Map, 0x33B);
            }

            if (m_Chest?.Location.Z >= m_Location.Z)
            {
                Stop();
                m_From.EndAction<TreasureMap>();

                m_Chest.Temporary = false;
                m_TreasureMap.Completed = true;
                m_TreasureMap.CompletedBy = m_From;

                var spawns = m_TreasureMap.Level switch
                {
                    0 => 3,
                    1 => 0,
                    _ => 4
                };

                for (var i = 0; i < spawns; ++i)
                {
                    var bc = Spawn(m_TreasureMap.Level, m_Chest.Location, m_Chest.Map, null, true);

                    if (bc != null)
                    {
                        m_Chest.Guardians.Add(bc);
                    }
                }
            }
            else
            {
                if (m_From.Body.IsHuman && !m_From.Mounted)
                {
                    m_From.Animate(11, 5, 1, true, false, 0);
                }

                new SoundTimer(m_From, 0x125 + m_Count % 2).Start();
            }
        }

        private class SoundTimer : Timer
        {
            private readonly Mobile m_From;
            private readonly int m_SoundID;

            public SoundTimer(Mobile from, int soundID) : base(TimeSpan.FromSeconds(0.9))
            {
                m_From = from;
                m_SoundID = soundID;
            }

            protected override void OnTick()
            {
                m_From.PlaySound(m_SoundID);
            }
        }
    }

    private class DecodeMapEntry : ContextMenuEntry
    {
        public DecodeMapEntry() : base(6147, 2)
        {
        }

        public override void OnClick(Mobile from, IEntity target)
        {
            if (target is TreasureMap { Deleted: false } map)
            {
                map.Decode(from);
            }
        }
    }

    private class OpenMapEntry : ContextMenuEntry
    {
        public OpenMapEntry() : base(6150, 2)
        {
        }

        public override void OnClick(Mobile from, IEntity target)
        {
            if (target is TreasureMap { Deleted: false } map)
            {
                map.DisplayTo(from);
            }
        }
    }

    private class DigEntry : ContextMenuEntry
    {
        public DigEntry(bool enabled) : base(6148, 2) => Enabled = enabled;

        public override void OnClick(Mobile from, IEntity target)
        {
            if (target is not TreasureMap { Deleted: false } map)
            {
                return;
            }

            if (!HasDiggingTool(from))
            {
                from.SendLocalizedMessage(1114416); // You must have a digging tool to dig for treasure.
                return;
            }

            map.OnBeginDig(from);
        }
    }
}

[SerializationGenerator(0)]
public partial class TreasureChestDirt : Item
{
    public TreasureChestDirt() : base(0x912)
    {
        Movable = false;

        Timer.StartTimer(TimeSpan.FromMinutes(2.0), Delete);
    }

    public override bool SkipSerialization => true;

    public void Turn1()
    {
        ItemID = 0x913;
    }

    public void Turn2()
    {
        ItemID = 0x914;
    }
}