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

namespace SiegeSong
{
    public class PlayerCameraManager : MonoBehaviour
    {
        public PlayerReferencePopulator ReferencePopulator;

        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 CameraSpeedX = 200.0f;
        public float CameraSpeedY = 100.0f;

        public float CameraMinX = -90.0f;
        public float CameraMaxX = 90.0f;

        public float CameraMinY = -70.0f;
        public float CameraMaxY = 90.0f;
        public float FirstPersonMinY = -170.0f;
        public float FirstPersonMaxY = 130.0f;

        public float CameraZoomSpeed = 0.1f;
        public float CameraZoom = 2.0f;
        public float CameraRequestedZoom = 2.0f;
        public float CameraMinZoom = -0.2f;
        public float CameraMaxZoom = 0.5f;
        public bool CanZoomToRequested = true;
        public bool CameraZooming;
        public bool CameraZoomCollision;

        public float cameraX;
        public float cameraY;

        public float RotationSpeedBrakeSpeed = 2.0f;
        public float RotationSpeedStopThreshold = 0.1f;
        
        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;
            }
            ReferencePopulator.PopulateReferences();
        }
    }
}