using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using DataLoader;
using HarmonyLib;
using TechbloxModdingAPI;
using TechbloxModdingAPI.Blocks;
using TechbloxModdingAPI.Commands;
using TechbloxModdingAPI.Utility;
using IllusionPlugin;
using RobocraftX.Schedulers;
using Svelto.Tasks;
using Svelto.Tasks.Enumerators;
using Svelto.Tasks.Lean;
using TechbloxModdingAPI.App;
using Unity.Mathematics;
using Main = TechbloxModdingAPI.Main;

namespace BuildingTools
{
    public class BuildingTools : IEnhancedPlugin
    {
        private readonly CommandUtils _commandUtils;
        private readonly BlockSelections _blockSelections;

        //private readonly MirrorModeEngine _mirrorModeEngine = new MirrorModeEngine();

        public BuildingTools()
        {
            _blockSelections = new BlockSelections();
            _commandUtils = new CommandUtils(_blockSelections);
        }

        public override void OnApplicationStart()
        {
            Main.Init();
            Game.AddPersistentDebugInfo("PlayerInfo", GetPlayerInfo);
            Game.AddPersistentDebugInfo("BlockModInfo", GetBlockInfo);
            _commandUtils.RegisterBlockCommand("scaleBlocks",
                "Scales the selected blocks, relative to current size (current scale * new scale)." +
                " The block you're looking at stays where it is, everything else is moved next to it.",
                (scaleX, scaleY, scaleZ, blocks, refBlock) => //TODO: Either remove refBlock or add commands for changing it
                {
                    if (!GameState.IsBuildMode()) return; //Scaling & positioning is weird in simulation
                    if (_blockSelections.CheckNoBlocks(blocks)) return;
                    float3? reference = Player.LocalPlayer.GetBlockLookedAt()?.Position;
                    if (!reference.HasValue)
                    {
                        Logging.CommandLogError("Look at a block (not too far away) to be used as reference.");
                        return;
                    }
                    float3 scale = new float3(scaleX, scaleY, scaleZ);
                    foreach (var block in blocks)
                    {
                        block.Scale *= scale;
                        block.Position = (float3) (reference + (block.Position - reference) * scale);
                    }

                    Logging.CommandLog("Blocks scaled and moved.");
                });
            _commandUtils.RegisterBlockCommand("scaleIndividually", "Scales the blocks you're looking at, but doesn't move them." +
                                                                    " The scale is relative, 1 means no change.",
                (scaleX, scaleY, scaleZ, blocks, refBlock) =>
                {
                    if (!GameState.IsBuildMode()) return; //Scaling & positioning is weird in simulation
                    float3 scale = new float3(scaleX, scaleY, scaleZ);
                    foreach (var block in blocks)
                        block.Scale *= scale;
                    Logging.CommandLog("Blocks scaled individually.");
                });
            _commandUtils.RegisterBlockCommand("moveBlocks", "Moves (teleports) the selected blocks around both in time stopped and running. The latter will be reset as expected.", (x, y, z, blocks, refBlock) =>
            {
                if (GameState.IsBuildMode())
                    foreach (var block in blocks)
                        block.Position += new float3(x, y, z);
                else if (GameState.IsSimulationMode())
                    foreach (var body in GetSimBodies(blocks))
                        body.Position += new float3(x, y, z);
                Logging.CommandLog("Blocks moved.");
            });
            _commandUtils.RegisterBlockCommand("colorBlocks", "Colors the selected blocks permanently both in time stopped and running. It won't be reset when stopping time.",
                (color, darkness, blocks, refBlock) =>
                {

                    if (!Enum.TryParse(color, true, out BlockColors clr))
                    {
                        Logging.CommandLogWarning("Color " + color + " not found");
                    }

                    foreach (var block in blocks)
                        block.Color = new BlockColor(clr, darkness);
                    Logging.CommandLog("Blocks colored.");
                });
            _commandUtils.RegisterBlockCommand("materialBlocks", "Sets the material of the selected blocks permanently both in time stopped and running. It won't be reset when stopping time.",
                (material, darkness, blocks, refBlock) =>
                {
                    if (!Enum.TryParse(material, true, out BlockMaterial mat))
                    {
                        Logging.CommandLogWarning("Material " + material + " not found");
                    }

                    IEnumerator<TaskContract> SetMaterial()
                    {
                        foreach (var block in blocks)
                        {
                            block.Material = mat;
                            yield return new WaitForSecondsEnumerator(0.2f).Continue();
                        }
                    }

                    SetMaterial().RunOn(ClientLean.UIScheduler);
                    Logging.CommandLog("Block materials set.");
                });

            CommandBuilder.Builder("selectBlocksLookedAt",
                    "Selects blocks (1 or more) to change. Only works in time stopped mode." +
                    " Parameter: whether one (true) or all connected (false) blocks should be selected.")
                .Action<bool>(single =>
                {
                    if (!GameState.IsBuildMode())
                    {
                        Logging.CommandLogError("This command can only be used in time stopped mode.");
                        return;
                    }
                    var refBlock = Player.LocalPlayer.GetBlockLookedAt();
                    if (refBlock == null)
                    {
                        Logging.CommandLogError("Block not found. Make sure to be close enough to the block.");
                        return;
                    }
                    _blockSelections.refBlock = refBlock;
                    _blockSelections.blocks = single ? new[] {refBlock} : refBlock.GetConnectedCubes() ?? new Block[0];
                    var blocks = _blockSelections.blocks;
                    Logging.CommandLog(blocks.Length + " blocks selected.");
                }).Build();
            CommandBuilder.Builder("selectBlocksWithID", "Selects blocks with a specific object ID.")
                .Action<char>(id =>
                {
                    _blockSelections.blocks =
                        (_blockSelections.refBlock = ObjectID.GetByID(id).FirstOrDefault())
                        ?.GetConnectedCubes() ?? Array.Empty<Block>();
                    Logging.CommandLog(_blockSelections.blocks.Length + " blocks selected.");
                }).Build();
            CommandBuilder.Builder("selectSelectedBlocks", "Selects blocks that are box selected by the player.")
                .Action(() =>
                {
                    _blockSelections.blocks = Player.LocalPlayer.GetSelectedBlocks();
                    _blockSelections.refBlock = _blockSelections.blocks.Length > 0 ? _blockSelections.blocks[0] : null;
                    Logging.CommandLog(_blockSelections.blocks.Length + " blocks selected.");
                }).Build();
            CommandBuilder.Builder("selectBlocksInGroup",
                    "Selects the blocks in the block group you are looking at (the blocks currently highlighted when in blueprint mode).")
                .Action(() =>
                {
                    var block = Player.LocalPlayer.GetBlockLookedAt();
                    if (block is null)
                    {
                        Logging.CommandLogError("You need to look at a block first (and be close to it).");
                        return;
                    }

                    var group = block.BlockGroup;
                    _blockSelections.blocks = group is null ? new[] {block} : group.ToArray();
                    _blockSelections.refBlock = block;
                    Logging.CommandLog(_blockSelections.blocks.Length + " blocks selected.");
                }).Build();

            /*ConsoleCommands.RegisterWithChannel("selectSendSignal", ch => { }, ChannelType.Object,
                "Sends a signal for selecting a given object ID for a command block.");*/

            _commandUtils.RegisterBlockCommand("pushBlocks", "Adds velocity to the selected blocks. Only works in time running mode.",
                (x, y, z, blocks, refBlock) =>
                {
                    if (!GameState.IsSimulationMode())
                    {
                        Logging.CommandLogError("This command can only be used in time running mode.");
                        return;
                    }
                    foreach (var block in GetSimBodies(blocks))
                        block.Velocity += new float3(x, y, z);
                    Logging.CommandLog("Blocks pushed.");
                });
            _commandUtils.RegisterBlockCommand("pushRotateBlocks",
                "Adds angular velocity to the selected blocks. Only works in simulation.",
                (x, y, z, blocks, refBlock) =>
                {
                    if (!GameState.IsSimulationMode())
                    {
                        Logging.CommandLogError("This command can only be used in time running mode.");
                        return;
                    }
                    foreach (var block in GetSimBodies(blocks))
                        block.AngularVelocity += new float3(x, y, z);
                    Logging.CommandLog("Blocks pushed to rotate.");
                });
            CommandBuilder.Builder("pushPlayer", "Adds velocity to the player.")
                .Action<float, float, float>((x, y, z) =>
                {
                    Player.LocalPlayer.Velocity += new float3(x, y, z);
                    Logging.CommandLog("Player pushed.");
                }).Build();
            CommandBuilder.Builder("pushRotatePlayer", "Adds angular velocity to the player.")
                .Action<float, float, float>((x, y, z) =>
                {
                    Player.LocalPlayer.AngularVelocity += new float3(x, y, z);
                    Logging.CommandLog("Player pushed to rotate.");
                }).Build();
            CommandBuilder.Builder("addBlocksToGroup",
                    "Adds the selected blocks to the same group (they will be highlighted together)." +
                    " This command recreates the blocks that are moved into the group, but block data is almost certainly preserved.")
                .Action(() =>
                {
                    if (_blockSelections.blocks.Length == 0)
                    {
                        Logging.CommandLogWarning("No blocks selected. Use a select command first.");
                        return;
                    }

                    var group = _blockSelections.refBlock.BlockGroup;
                    uint refID = _blockSelections.refBlock.Id.entityID;
                    if (group is null)
                    {
                        var copy = _blockSelections.refBlock.Copy();
                        group = BlockGroup.Create(copy);
                        _blockSelections.refBlock.Remove();
                        _blockSelections.refBlock = copy;
                    }

                    _blockSelections.blocks = _blockSelections.blocks.Where(block => block.Id.entityID != refID)
                        .Select(block =>
                        {
                            if (block.BlockGroup == group) return block;
                            var copy = block.Copy();
                            group.Add(copy);
                            block.Remove();
                            return copy;
                        }).ToArray();
                }).Build();
            var setLimits = new SetLimitsCommandEngine();
            CommandBuilder.Builder("setBuildLimits", "Set build limits").Action((Action<int, int, int>)setLimits.SetLimits).Build();
            GameEngineManager.AddGameEngine(setLimits);

            CommandBuilder.Builder("freeScaling", "This command removes scaling restrictions on the selected block. Reselect block to apply.")
                .Action(() =>
                {
                    var blockID = Player.LocalPlayer.SelectedBlock;
                    if (blockID == BlockIDs.Invalid)
                    {
                        Logging.CommandLogWarning("You don't have any blocks in your hand.");
                        return;
                    }
                    FullGameFields._dataDb.GetValue<CubeListData>((int) blockID).scalingPermission =
                        ScalingPermission.NonUniform;
                    Logging.CommandLog("Free scaling enabled for " + blockID + " until the game is restarted. Reselect block to apply.");
                }).Build();

            CommandBuilder.Builder("setTweakLimit",
                    "Sets the limit on the tweakable stat on selected block. Usage: setTweakLimit [stat] [value]. Sets all stats to 1000 by default.")
                .Action((string stat, int value) =>
                {
                    var bl = Player.LocalPlayer.SelectedBlock;
                    if (bl == BlockIDs.Invalid)
                    {
                        Logging.CommandLogError("Select the block in the inventory first.");
                        return;
                    }

                    if (!FullGameFields._dataDb.TryGetValue<TweakableStatsData>((int)bl, out var data))
                    {
                        Logging.CommandLogError($"No tweakable stats found on {bl} (selected)");
                        return;
                    }

                    TweakPropertyInfo[] stats;
                    if (stat is null || stat.Length == 0)
                    {
                        stats = data.Stats;
                    }
                    else
                    {
                        if (!data.statsByName.TryGetValue(stat, out var statInfo))
                        {
                            Logging.CommandLogError($"Tweakable stat {stat} not found. Stats: {data.statsByName.Keys.Aggregate((a, b) => a + ", " + b)}");
                            return;
                        }

                        stats = new[] { statInfo };
                    }

                    foreach (var statInfo in stats)
                    {
                        statInfo.max = value == 0 ? 1000 : value;
                        statInfo.min = -1000;
                    }

                    Logging.CommandLog($"{(stat is null || stat.Length == 0 ? "All stats" : $"Stat {stat}")} max changed to {(value == 0 ? 1000 : value)} on {bl}");
                }).Build();

            //_mirrorModeEngine.Init();
            UI.Init();

            new Harmony("BuildTools").PatchAll(Assembly.GetExecutingAssembly());
        }

        private string GetBlockInfo()
        {
            if (GameState.IsBuildMode())
                return GetBlockInfoInBuildMode();
            if (GameState.IsSimulationMode())
                return GetBodyInfoInSimMode();

            return "Switching modes...";
        }

        private static string GetBlockInfoInBuildMode()
        {
            var block = Player.LocalPlayer.GetBlockLookedAt();
            if (block == null) return GetWireInfoInBuildMode();
            float3 pos = block.Position;
            float3 rot = block.Rotation;
            float3 scale = block.Scale;
            return $"Block: {block.Type} at {pos.x:F} {pos.y:F} {pos.z:F}\n" +
                   $"- Rotation: {rot.x:F}° {rot.y:F}° {rot.z:F}°\n" +
                   $"- Color: {block.Color.Color} darkness: {block.Color.Darkness}\n" +
                   $"- Material: {block.Material}\n" +
                   $"- Scale: {scale.x:F} {scale.y:F} {scale.z:F}\n" +
                   $"- Label: {block.Label}\n" +
                   $"- ID: {block.Id}\n" +
                   (block.BlockGroup != null ? $"- Group: {block.BlockGroup.Id}\n" : "") +
                   $"- Mass: {block.Mass}";
        }

        private static string GetWireInfoInBuildMode()
        {
            var wire = Player.LocalPlayer.GetWireLookedAt();
            if (wire == null) return "";
            var startPos = wire.Start.Position;
            var endPos = wire.End.Position;
            return $"Wire with {wire.Id}\n" +
                   $"- From block {wire.Start.Type} at {startPos.x:F} {startPos.y:F} {startPos.z:F}\n" +
                   $"- at port {wire.StartPortName}\n" +
                   $"- To block {wire.End.Type} at {endPos.x:F} {endPos.y:F} {endPos.z:F}\n" +
                   $"- at port {wire.EndPortName}";
        }

        private static string GetBodyInfoInSimMode()
        {
            var body = Player.LocalPlayer.GetSimBodyLookedAt();
            if (body == null) return GetBlockInfoInBuildMode();
            float3 pos = body.Position;
            float3 rot = body.Rotation;
            float3 vel = body.Velocity;
            float3 ave = body.AngularVelocity;
            float3 com = body.CenterOfMass;
            Cluster cluster = body.Cluster;
            return $"Body at {pos.x:F} {pos.y:F} {pos.z:F}\n" +
                   $"- Rotation: {rot.x:F}° {rot.y:F}° {rot.z:F}°\n" +
                   $"- Velocity: {vel.x:F} {vel.y:F} {vel.z:F}\n" +
                   $"- Angular velocity: {ave.x:F} {ave.y:F} {ave.z:F}\n" +
                   $"- {(body.Static ? "Static body" : $"Center of mass: {com.x:F} {com.y:F} {com.z:F}")}\n" +
                   $"- Volume: {body.Volume:F}\n" +
                   $"- Chunk health: {body.CurrentHealth:F} / {body.InitialHealth:F} - Multiplier: {body.HealthMultiplier:F}\n" +
                   (cluster == null
                       ? ""
                       : $"- Cluster health: {cluster.CurrentHealth:F} / {cluster.InitialHealth:F} - Multiplier: {cluster.HealthMultiplier:F}\n" +
                         $"- Cluster mass: {cluster.Mass}"
                   );
        }

        private string GetPlayerInfo()
        {
            var player = Player.LocalPlayer;
            if (player == null) return "";
            float3 pos = player.Position;
            float3 rot = player.Rotation;
            float3 vel = player.Velocity;
            float3 ave = player.AngularVelocity;
            return $"Player position: {pos.x:F} {pos.y:F} {pos.z:F}\n" +
                   $"- Rotation: {rot.x:F}° {rot.y:F}° {rot.z:F}°\n" +
                   $"- Velocity: {vel.x:F} {vel.y:F} {vel.z:F}\n" +
                   $"- Angular velocity: {ave.x:F} {ave.y:F} {ave.z:F}\n" +
                   $"- Health: {player.CurrentHealth:F} / {player.InitialHealth:F}";
        }

        private IEnumerable<SimBody> GetSimBodies(Block[] blocks)
            => blocks.Select(block => block.GetSimBody()).Where(block => !(block is null)).Distinct();

        public override void OnApplicationQuit() => Main.Shutdown();

        public override string Name => "BuildingTools";
        public override string Version => "v1.1.0";
    }
}