using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.Events;
using SiegeSong;

namespace SiegeSong
{
    public class CommandConsole : MonoBehaviour
    {
        public InstanceManager InstanceManager;
        public RuntimeManager RuntimeManager;

        public GameObject ConsoleWrapper;
        public Text ConsoleText;

        public string ConsoleInput;

        public bool CommandConsoleOpen;

        private int MaxConsoleLines = 10;

        private string UpArrowKey = "up";
        private string EnterKey = "return";
        private string BackspaceKey = "backspace";
        private string SpaceKey = "space";

        private string consoleViableKeys = "abcdefghijklmnopqrstuvwxyz.0987654321";
        private string subWordDelimiter = ".";
        private string wordDelimiter = " ";

        private bool oldSpaceKeyState;

        string[] commandWords =
        {
            "kill",
            "drive",
            "resurrect",
            "spawn",
            "respawn",
            "despawn",
            "setplayer",
            "tgm",
        };

        public string[] consoleLines;

        void Start()
        {
            consoleLines =  new string[MaxConsoleLines];
        }

        void Update()
        {
            if (CommandConsoleOpen)
            {
                ConsoleWrapper.active = true;
                for (var i = 0; i < consoleViableKeys.Length; i++)
                    if (Input.GetKeyDown(consoleViableKeys[i].ToString()))
                        ConsoleInput += consoleViableKeys[i];
                    else if (Input.GetKeyDown(SpaceKey) && !oldSpaceKeyState)
                        ConsoleInput = ConsoleInput.TrimEnd() + " ";

                oldSpaceKeyState = Input.GetKeyDown(SpaceKey);

                if (Input.GetKeyDown(UpArrowKey))
                    ConsoleInput = consoleLines[consoleLines.Length - 1];


                RaycastHit hit;
                if (Input.GetMouseButtonDown(0))
                    if (Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), out hit, 25) && hit.transform.gameObject.GetComponent<Statistics>() != null)
                        ConsoleInput += hit.transform.gameObject.GetComponent<Statistics>().InstanceID;

                if (Input.GetKeyDown(EnterKey))
                    SubmitCurrentInput();
                if (Input.GetKeyDown(BackspaceKey))
                    ConsoleInput = ConsoleInput.Substring(0, ConsoleInput.Length - 1);

                var consoleLinesText = "";
                for (var i = consoleLines.Length - 1; i >= 0; i--)
                    if (i < MaxConsoleLines)
                        consoleLinesText += $"{consoleLines[i]}\n";

                ConsoleText.text = $"{ConsoleInput}\n{consoleLinesText}";
            }
            else
            {
                ConsoleWrapper.active = false;
            }
        }

        
        void SubmitCurrentInput()
        {
            var targetInstanceId = "";
            var targeted = false;
            var validCommand = false;

            if (ConsoleInput.IndexOf(subWordDelimiter) != -1 && (ConsoleInput.IndexOf(subWordDelimiter) < ConsoleInput.IndexOf(wordDelimiter) || ConsoleInput.IndexOf(wordDelimiter) == -1))
            {
                targetInstanceId = ConsoleInput.Split(wordDelimiter)[0].Split(subWordDelimiter)[0];
                targeted = true;
            }
            var words = ConsoleInput.Split(wordDelimiter);
            var instanceCount = 1;
            var commandWord = targeted ? words[0].Substring(words[0].IndexOf(".") + 1) : words[0];
            if (words.Length > 1)
            {
                if (!targeted)
                {
                    targetInstanceId = words[1].ToLower();
                    if (words.Length == 3 && int.TryParse(words[2], out instanceCount))
                        instanceCount = int.Parse(words[2]);
                }
                else
                {
                    if (words.Length == 2 && int.TryParse(words[1], out instanceCount))
                        instanceCount = int.Parse(words[1]);
                }
            }
            var parameter = "";
            if (words.Length == 2)
                parameter = words[1];
            else if (words.Length == 3)
                parameter = words[2];

            foreach (var command in commandWords)
            {
                if (commandWord.ToLower() == command)
                {
                    switch (commandWord)
                    {
                        case "kill":
                            KillActor(targetInstanceId);
                            break;
                        case "resurrect":
                            RessurrectActor(targetInstanceId);
                            break;
                        case "spawn":
                            SpawnActor(targetInstanceId, instanceCount);
                            break;
                        case "despawn":
                            DespawnActor(targetInstanceId);
                            break;
                        case "respawn":
                            RespawnActor(targetInstanceId);
                            break;
                        case "setplayer":
                            SetActorToPlayer(targetInstanceId);
                            break;
                        case "drive":
                            DriveMotor(targetInstanceId, parameter);
                            break;
                        case "tgm":
                            ToggleActorGodMode(targetInstanceId);
                            break;
                    }
                    validCommand = true;
                }
            }

            var newConsoleLines = new string[MaxConsoleLines];

            for (var i = 0; i < MaxConsoleLines - 1; i++)
                newConsoleLines[i] = consoleLines[i + 1];

            newConsoleLines[MaxConsoleLines - 1] = validCommand ? ConsoleInput : $"ERROR - '{commandWord}' IS NOT A VALID COMMAND - ( {ConsoleInput} )";

            ConsoleInput = "";
            consoleLines = newConsoleLines;
        }

        void KillActor(string instaceID)
        {
            var actor = InstanceManager.GetInstanceByID(instaceID).GetComponent<StatisticsManager>();
            actor.Stats.Alive = false;
            actor.Stats.Health = 0;
        }

        void RessurrectActor(string instaceID)
        {
            var actor = InstanceManager.GetInstanceByID(instaceID).GetComponent<StatisticsManager>();
            actor.Stats.Alive = true;
            actor.Stats.Health = 1;
        }

        void SpawnActor(string instaceID, int? instanceCount = 1)
        {
            var actor = InstanceManager.GetInstanceByID(instaceID).GetComponent<StatisticsManager>();
            //for(var i = 0; i < instanceCount; i++)
            //    actor.ActorLoader.LoadActor();
        }

        void RespawnActor(string instaceID)
        {
            var actor = InstanceManager.GetInstanceByID(instaceID).GetComponent<StatisticsManager>();
            //actor.ActorLoader.LoadActor(true);
        }

        void DespawnActor(string instaceID)
        {
            var actor = InstanceManager.GetInstanceByID(instaceID).GetComponent<StatisticsManager>();
            GameObject.Destroy(actor.gameObject);
        }

        void SetActorToPlayer(string instaceID)
        {
            var currentPlayerActor = InstanceManager.GetInstanceByID(InstanceManager.CurrentPlayerInstanceID);
            foreach (Transform childtransform in currentPlayerActor.transform)
            {
                if (childtransform.gameObject.name == "PlayerAgent")
                    childtransform.gameObject.active = false;
            }
            var actor = InstanceManager.GetInstanceByID(instaceID);
            foreach (Transform childtransform in actor.transform)
                if (childtransform.gameObject.name == "PlayerAgent")
                    childtransform.gameObject.active = true;
            RuntimeManager.PlayerInstance = actor;
        }

        void ToggleActorGodMode(string instaceID)
        {
            var actorStats = InstanceManager.GetInstanceByID(instaceID).GetComponent<Statistics>();

        }

        void DriveMotor(string instaceID, string direction)
        {
            var actorMotor = InstanceManager.GetInstanceByID(instaceID).GetComponent<Motor>();
            switch (direction)
            {
                case "forward":
                    actorMotor.DriveForward = !actorMotor.DriveForward;
                    break;
                case "backward":
                    actorMotor.DriveBackward = !actorMotor.DriveBackward;
                    break;
                case "left":
                    actorMotor.DriveLeft = !actorMotor.DriveLeft;
                    break;
                case "rotateleft":
                    actorMotor.DriveRotateLeft = !actorMotor.DriveRotateLeft;
                    break;
                case "right":
                    actorMotor.DriveRight = !actorMotor.DriveRight;
                    break;
                case "rotateright":
                    actorMotor.DriveRotateRight = !actorMotor.DriveRotateRight;
                    break;
            }
        }

    }
}