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

namespace SiegeSong
{
    public class InputManager : MonoBehaviour
    {
        public bool InputModeGamepad = true;
        public Motor Motor;
        public CameraManager CameraManager;
        public InventoryManager InventoryManager;
        public Selector Selector;

        public ActorLoader loader;
        public CommandConsole CommandConsole;

        public Dictionary<string, bool> HandleButtonInputOldState;
        public Dictionary<string, bool> HandleButtonChordedPressed;
        public Dictionary<string, bool> HandleButtonDoublePressStarted;
        public Dictionary<string, bool> HandleButtonTimerActive; 
        public Dictionary<string, bool> HandleButtonChordedTimerActive;
        public Dictionary<string, bool> HandleButtonInputInUse;
        public Dictionary<string, float> HandleButtonTimer;
        public Dictionary<string, float> HandleButtonChordedTimer;

        private string RunForwardKeyboardInput = "w";
        private string RunBackwardKeyboardInput = "s";
        private string StrafeLeftKeyboardInput = "a";
        private string StrafeRightKeyboardInput = "d";
        private string ChangeCameraKeyboardInput = "f";
        private string RotateCameraVerticalKeyboardInput = "Mouse Y";
        private string RotateCameraHorizontalKeyboardInput = "Mouse X"; 
         
        private string menuOpenGamepadInput = "Back";
        private string menuVerticalGamepadInput = "D-Pad Vertical";
        private string menuHorizontalGamepadInput = "D-Pad Horizontal";
        private string activateGamepadInput = "A";
        private string cancelGamepadInput = "B";
        private string dropGamepadInput = "X";
        private string gamePadUseRightInput = "RT";
        private string gamePadUseLeftInput = "LT";
        private string gamePadSwitchLeftInput = "LB";
        private string gamePadSwitchRightInput = "RB";
        private string runGamepadInput = "LeftAnalogVertical";
        private string strafeGamepadInput = "LeftAnalogHorizontal";
        private string rotateCameraVerticalGamepadInput = "RightAnalogVertical";
        private string rotateCameraHorizontalGamepadInput = "RightAnalogHorizontal";
        private string changeCameraGamepadInput = "RightStickClick";
         
        private float inputMin = 0.01f;
        private float longPressTime = 0.4f;
        private float doublePressDelayTime = 0.1f;

        private bool oldActivateState;
        private bool oldMenuState;
        private bool oldCameraState;
        private bool oldDropState;
        private bool oldCrouchState;

        void Start()
        {

        }

        public InputDirection GetInputDirection(bool leftStick = false)
        {
            var stickVerticalGamepad = Input.GetAxis(leftStick ? runGamepadInput : rotateCameraVerticalGamepadInput);
            var stickHorizontalGamepad = Input.GetAxis(leftStick ? strafeGamepadInput : rotateCameraHorizontalGamepadInput);

            var up = false;
            var down = false;
            var left = false;
            var right = false;

            if (stickVerticalGamepad > 0)
                up = true;
            if (stickVerticalGamepad < 0)
                down = true;
            if (stickHorizontalGamepad > 0)
                left = true;
            if (stickHorizontalGamepad < 0)
                right = true;

            if (up && left)
                return InputDirection.TopLeft;
            if (up && right)
                return InputDirection.TopRight;
            if (down && right)
                return InputDirection.BottomRight;
            if (down && left)
                return InputDirection.BottomLeft;
            if (up)
                return InputDirection.TopMid;
            if (down)
                return InputDirection.BottomMid;
            if (left)
                return InputDirection.MidLeft;
            if (right)
                return InputDirection.MidRight;

            return InputDirection.MidMid;
        }

        void Update()
        {
            if (Input.GetKeyDown("`"))
            {
                CommandConsole.CommandConsoleOpen = !CommandConsole.CommandConsoleOpen;
            }

            var shouldRotate = false;
            var zooming = false;
            if (InputModeGamepad)
            {
                var cameraHorizontalGamepad = Input.GetAxis(rotateCameraHorizontalGamepadInput);
                var cameraVerticalGamepad = Input.GetAxis(rotateCameraVerticalGamepadInput);
                var runVertical = Input.GetAxis(runGamepadInput);
                var runHorizontal = Input.GetAxis(strafeGamepadInput);
                var menuVertical = Input.GetAxis(menuVerticalGamepadInput);
                var menuHorizontal = Input.GetAxis(menuHorizontalGamepadInput);

                var changeCameraGamepad = Input.GetAxis(changeCameraGamepadInput);

                var activateGamepadInput = Input.GetButton(this.activateGamepadInput);
                var dropGamepadInput = Input.GetButton(this.dropGamepadInput);
                var openMenuGamepadInput = Input.GetButton(menuOpenGamepadInput);
                var crouchState = Input.GetButton(cancelGamepadInput);


                InventoryManager.OpenInputNewState = !oldMenuState && openMenuGamepadInput;
                
                if (InventoryManager.InventoryScreenOpen || InventoryManager.TransferScreenOpen)
                {
                    if (crouchState && !oldCrouchState)
                    {
                        InventoryManager.CloseInventoryScreen();
                        InventoryManager.CloseTransferScreen();
                    }
                    InventoryManager.ActivateInputNewState = !oldActivateState && activateGamepadInput;
                    InventoryManager.DropInputNewState = !oldDropState && dropGamepadInput;
                }
                else
                {
                    if (openMenuGamepadInput && !oldMenuState)
                        InventoryManager.OpenInventoryScreen();

                    Selector.InteractInputNewState =  !oldActivateState && activateGamepadInput;

                    HandleButtonInput(gamePadUseRightInput, Motor.UseRight, null, null, null, null, true);
                    HandleButtonInput(gamePadUseLeftInput, Motor.UseLeft, null, null, null, null, true);
                    HandleButtonInput(this.dropGamepadInput, Motor.UseAbility, null, null, null, null, true);
                    HandleButtonInput(gamePadSwitchRightInput, Motor.NextRightTechnique, Motor.NextRightEquip);
                    HandleButtonInput(gamePadSwitchLeftInput, Motor.NextLeftTechnique, Motor.NextLeftEquip, Motor.NextAbilityEquip, Motor.NextAbilityTechnique, gamePadSwitchRightInput);
                    HandleButtonInput(changeCameraGamepadInput, CameraManager.SwitchCamera, null, null, null, null, true);

                    if (!InventoryManager.ActivateInputNewState && activateGamepadInput && !oldActivateState && Motor.UsingStation && Motor.TargetStation != null && Selector.Target == null)
                        Motor.StopUsingStation(Motor.TargetStation);
                }

                if (runVertical > inputMin || runVertical < -inputMin)
                {
                    Motor.Run(runVertical);
                    shouldRotate = true;
                }
                else
                {
                    Motor.Run(0);
                }

                if (runHorizontal != 0)
                {
                    Motor.Strafe(runHorizontal);
                    shouldRotate = true;
                }
                else
                {
                    Motor.Strafe(0);
                }

                if (cameraVerticalGamepad != 0)
                    CameraManager.RotateVertical(cameraVerticalGamepad);
                else
                    CameraManager.RotateVertical(0);

                if (cameraHorizontalGamepad != 0)
                    CameraManager.RotateHorizontal(cameraHorizontalGamepad);
                else
                    CameraManager.RotateHorizontal(0);

                if (oldCameraState && changeCameraGamepad != 0)
                {
                    if (runVertical != 0)
                    {
                        zooming = true;
                        if (runVertical > 0)
                            CameraManager.ZoomOut();
                        else
                            CameraManager.ZoomIn();
                    }
                }

                if (menuVertical > inputMin && !zooming)
                    InventoryManager.UpArrowInputNewState = true;
                else
                    InventoryManager.UpArrowInputNewState = false;

                if (menuVertical < -inputMin && !zooming)
                    InventoryManager.DownArrowInputNewState = true;
                else
                    InventoryManager.DownArrowInputNewState = false;

                if (!zooming && !(runVertical > inputMin || runVertical < -inputMin) && !(runHorizontal > inputMin || runHorizontal < -inputMin))
                    Motor.Stop();
                oldCameraState = changeCameraGamepad != 0;
                oldActivateState = activateGamepadInput;
                oldDropState = dropGamepadInput;
                oldMenuState = openMenuGamepadInput;
                oldCrouchState = crouchState;
            }
            else
            {
                var runForward = Input.GetKey(RunForwardKeyboardInput);
                var runBackward = Input.GetKey(RunBackwardKeyboardInput);
                var strafeLeft = Input.GetKey(StrafeLeftKeyboardInput);
                var strafeRight = Input.GetKey(StrafeRightKeyboardInput);
                var cameraHorizontalKeyboad = Input.GetAxis(RotateCameraHorizontalKeyboardInput);
                var cameraVerticalKeyboad = Input.GetAxis(RotateCameraVerticalKeyboardInput);
                var changeCameraKeyboad = Input.GetKeyDown(ChangeCameraKeyboardInput);

                if (!changeCameraKeyboad && cameraVerticalKeyboad > inputMin || cameraVerticalKeyboad < -inputMin)
                    CameraManager.RotateVertical(cameraVerticalKeyboad);

                if (cameraHorizontalKeyboad > inputMin || cameraHorizontalKeyboad < -inputMin)
                    CameraManager.RotateHorizontal(cameraHorizontalKeyboad);

                if (changeCameraKeyboad)
                {
                    if (runForward || runBackward)
                    {
                        zooming = true;
                        if (runForward)
                            CameraManager.ZoomOut();
                        if (runBackward)
                            CameraManager.ZoomIn();
                    }
                }

                if (runForward && !changeCameraKeyboad && !zooming)
                {
                    Motor.Run(1);
                    shouldRotate = true;
                }

                if (runBackward && !changeCameraKeyboad && !zooming)
                {
                    Motor.Run(-1);
                    shouldRotate = true;
                }

                if (strafeLeft && !zooming)
                {
                    Motor.Strafe(-1);
                    shouldRotate = true;
                }

                if (strafeRight && !zooming)
                {
                    Motor.Strafe(1);
                    shouldRotate = true;
                }

                if (!runForward && !runBackward && !strafeLeft && !strafeRight)
                    Motor.Stop();
            }

            if (shouldRotate || (CameraManager.FirstPersonActive && CameraManager.CameraX != 0.0f))
            {
                CameraManager.RealignCamera(true);
                if (CameraManager.FirstPersonActive && CameraManager.CameraX != 0.0f)
                    Motor.Strafe(0, true);
            }

        }
        public delegate void ShortPress();
        public delegate void LongPress();
        public delegate void ChordedShortPress();
        public delegate void ChordedLongPress();

        public void HandleButtonInput(string inputName, ShortPress shortPress, LongPress longPress = null, ChordedShortPress chordedShortPress = null, ChordedLongPress chordedLongPress = null, string chordedInput = "", bool isAxis = false, bool chordIsAxis = false)
        {
            if (HandleButtonInputOldState == null)
                HandleButtonInputOldState = new Dictionary<string, bool>();
            if (HandleButtonChordedPressed == null)
                HandleButtonChordedPressed = new Dictionary<string, bool>();
            if (HandleButtonDoublePressStarted == null)
                HandleButtonDoublePressStarted = new Dictionary<string, bool>();
            if (HandleButtonTimerActive == null)
                HandleButtonTimerActive = new Dictionary<string, bool>();
            if (HandleButtonChordedTimerActive == null)
                HandleButtonChordedTimerActive = new Dictionary<string, bool>();
            if (HandleButtonInputInUse == null)
                HandleButtonInputInUse = new Dictionary<string, bool>();
            if (HandleButtonTimer == null)
                HandleButtonTimer = new Dictionary<string, float>();
            if (HandleButtonChordedTimer == null)
                HandleButtonChordedTimer = new Dictionary<string, float>();

            if (!HandleButtonInputOldState.ContainsKey(inputName))
                HandleButtonInputOldState.Add(inputName, false);
            if (!HandleButtonChordedPressed.ContainsKey(inputName))
                HandleButtonChordedPressed.Add(inputName, false);
            if (!HandleButtonDoublePressStarted.ContainsKey(inputName))
                HandleButtonDoublePressStarted.Add(inputName, false);
            if (!HandleButtonTimerActive.ContainsKey(inputName))
                HandleButtonTimerActive.Add(inputName, false);
            if (!HandleButtonChordedTimerActive.ContainsKey(inputName))
                HandleButtonChordedTimerActive.Add(inputName, false);
            if (!HandleButtonInputInUse.ContainsKey(inputName))
                HandleButtonInputInUse.Add(inputName, false);
            if (!HandleButtonTimer.ContainsKey(inputName))
                HandleButtonTimer.Add(inputName, 0.0f);
            if (!HandleButtonChordedTimer.ContainsKey(inputName))
                HandleButtonChordedTimer.Add(inputName, 0.0f);

            if (HandleButtonChordedTimerActive[inputName])
                HandleButtonChordedTimer[inputName] += Time.deltaTime;
            if (HandleButtonTimerActive[inputName])
                HandleButtonTimer[inputName] += Time.deltaTime;

            var inputValue = isAxis ? Input.GetAxis(inputName) > inputMin : Input.GetButton(inputName);
            var chordedInputValue = chordedInput != "" && chordedInput != null ? (chordIsAxis ? Input.GetAxis(chordedInput) > inputMin : Input.GetButton(chordedInput)) : false;

            if (inputValue)
            {
                if (!HandleButtonInputInUse[inputName])
                    HandleButtonInputInUse[inputName] = true;
                if (!chordedInputValue)
                {
                    if (HandleButtonInputOldState[inputName] == false)
                    {
                        HandleButtonTimer[inputName] = 0;
                        HandleButtonTimerActive[inputName] = true;
                    }
                    HandleButtonInputOldState[inputName] = true;
                }
            }
            else
            {
                HandleButtonInputInUse[inputName] = false;
                if (HandleButtonInputOldState[inputName])
                {
                    HandleButtonInputOldState[inputName] = false;
                    HandleButtonTimerActive[inputName] = false;
                    if (HandleButtonTimer[inputName] > longPressTime && longPress != null)
                    {
                        longPress.Invoke();
                    }
                    else
                    {
                        shortPress.Invoke();
                    }
                }
                if (HandleButtonInputOldState[inputName] && !chordedInputValue)
                {
                    if (!HandleButtonChordedPressed[inputName])
                    {
                        if (HandleButtonDoublePressStarted[inputName] && HandleButtonChordedTimer[inputName] < doublePressDelayTime)
                            HandleButtonChordedTimerActive[inputName] = false;

                        HandleButtonChordedTimer[inputName] = 0;
                        HandleButtonChordedTimerActive[inputName] = true;
                    }
                    HandleButtonChordedPressed[inputName] = true;
                }
                else
                {
                    HandleButtonChordedTimerActive[inputName] = false;
                    if (HandleButtonChordedPressed[inputName])
                    {
                        if (HandleButtonChordedTimer[inputName] > longPressTime && chordedLongPress != null)
                        {
                            chordedLongPress.Invoke();
                        }
                        else if (chordedShortPress != null)
                        {
                            chordedShortPress.Invoke();
                        }
                        HandleButtonChordedTimerActive[inputName] = true;
                        HandleButtonDoublePressStarted[inputName] = true;
                    }
                    HandleButtonChordedTimer[inputName] = 0;
                    HandleButtonChordedPressed[inputName] = false;
                }
            }
        }
    }
}