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

namespace SiegeSong
{
    public class PlayerCameraManager : MonoBehaviour
    {
        public RuntimeManager RuntimeManager;

        public ActorMotor ActorMotor;

        public GameObject ActiveCamera;
        private int activeCameraIndex;

        public bool FirstPersonActive;

        public Transform CameraTarget;

        public GameObject LeftCamera;
        public GameObject CenterCamera;
        public GameObject RightCamera;

        public GameObject FirstPersonCamera;

        public float CameraX;
        public float CameraY;

        private float cameraSpeedX = 200.0f;
        private float cameraSpeedY = 100.0f;
        
        private float cameraMinX = -90.0f;
        private float cameraMaxX = 90.0f;
        
        private float cameraMinY = -70.0f;
        private float cameraMaxY = 90.0f;
        private float firstPersonMinY = -170.0f;
        private float firstPersonMaxY = 130.0f;
        
        private float cameraZoomSpeed = 0.1f;
        private float cameraZoom = 2.0f;
        private float cameraRequestedZoom = 2.0f;
        private float cameraMinZoom = -0.2f;
        private float cameraMaxZoom = 0.5f;
        private bool canZoomToRequested = true;
        private bool cameraZooming;
        private bool cameraZoomCollision;
        
        private float rotationSpeedBrakeSpeed = 2.0f;
        private float rotationSpeedStopThreshold = 0.1f;

        private float cameraZoomStep = 0.1f;

        //public CameraMode ActiveMode;

        void Start()
        {

        }

        void Update()
        {
            if (ActorMotor.UsingStation)
            {
                CameraX = ActorMotor.TargetStation.CameraX;
                CameraY = ActorMotor.TargetStation.CameraY;
            }

            if (!cameraZoomCollision)
            {
                for (var i = 0; i < ActiveCamera.transform.childCount; i++)
                {
                    var child = ActiveCamera.transform.GetChild(i);
                    if (child.gameObject.CompareTag("MainCamera") && !FirstPersonActive)
                    {
                        child.position = new Vector3(child.position.x, child.position.y, child.position.z + cameraZoom);
                        cameraZoom = 0;
                    }
                }
            }
        }

        public void SwitchActiveCamera(Camera targetCamera)
        {

        }

        public void ZoomIn()
        {
            if (!FirstPersonActive)
            {
                if (cameraZoom - cameraZoomStep > cameraMinZoom)
                {
                    cameraZoom -= cameraZoomStep;
                }
                else
                {
                    cameraZoom = cameraMinZoom;
                }
            }
        }

        public void ZoomOut(bool request = true)
        {
            if (!FirstPersonActive)
            {
                cameraZoom += cameraZoomStep;
            }
            if (!FirstPersonActive)
            {
                if (cameraZoom + cameraZoomStep < cameraMaxZoom)
                {
                    cameraZoom += cameraZoomStep;
                }
                else
                {
                    cameraZoom = cameraMaxZoom;
                }
            }
        }

        public void RealignCamera(bool rotateBody = false)
        {
            if (!rotateBody)
            {
                if (CameraX < rotationSpeedStopThreshold && CameraX > -rotationSpeedStopThreshold)
                    CameraX = 0;
                else
                    CameraX = CameraX / rotationSpeedBrakeSpeed;
            }
            else
            {
                ActorMotor.RotateToDirection(ActiveCamera.transform.eulerAngles);

                ActiveCamera.transform.RotateAround(CameraTarget.position, Vector3.up, -CameraX);

                CameraX = 0;
            }
        }

        public void RotateHorizontal(float amount)
        {
            var degreesToRotate = amount * cameraSpeedX * Time.deltaTime;
            
            CameraX += degreesToRotate;
            ActiveCamera.transform.RotateAround(CameraTarget.position, Vector3.up, amount * cameraSpeedX * Time.deltaTime);
        }

        public void RotateVertical(float amount)
        {
            var degreesToRotate = amount * cameraSpeedY * Time.deltaTime;
            if (degreesToRotate > 0 && !(CameraY + degreesToRotate > (FirstPersonActive ? firstPersonMaxY : cameraMaxY))
                || (degreesToRotate < 0 && !(CameraY + degreesToRotate < (FirstPersonActive ? firstPersonMinY : cameraMinY))))
            {
                CameraY += degreesToRotate;
                ActiveCamera.transform.RotateAround(CameraTarget.position, ActiveCamera.transform.TransformDirection(-Vector3.right), amount * cameraSpeedY * Time.deltaTime);
            }
        }

        public void SwitchCamera()
        {
            ActiveCamera.transform.RotateAround(CameraTarget.position, ActiveCamera.transform.TransformDirection(-Vector3.right), -CameraY);
            CameraY = 0;
            switch (activeCameraIndex)
            {
                case 0:
                    FirstPersonActive = false;
                    FirstPersonCamera.active = false;
                    CenterCamera.active = true;
                    ActiveCamera = CenterCamera;
                    activeCameraIndex++;
                    break;
                case 1:
                    LeftCamera.active = false;
                    RightCamera.active = true;
                    ActiveCamera = RightCamera;
                    activeCameraIndex++;
                    break;
                case 2:
                    RightCamera.active = false;
                    LeftCamera.active = true;
                    ActiveCamera = LeftCamera;
                    activeCameraIndex++;
                    break;
                case 3:
                default:
                    LeftCamera.active = false;
                    FirstPersonActive = true;
                    FirstPersonCamera.active = true;
                    ActiveCamera = FirstPersonCamera;
                    activeCameraIndex = 0;
                    break;
            }
            RuntimeManager.PopulateReferences();
        }
    }
}