using Invector;
using Invector.vCamera;
using UnityEngine;

namespace Beyond
{
    public class bThirdPersonCamera : vThirdPersonCamera
    {
        private static bThirdPersonCamera _instance;
        public static new bThirdPersonCamera instance
        {
            get { return _instance; }
        }

        private void Awake()
        {
            if (_instance == null)
            {
                _instance = this;
            }
            else
            {
                Debug.LogError("bThirdPersonCamera already exists!");
                Destroy(gameObject);
            }
        }

        public Vector3 GetCameraTargetPosition(bool useDefaultRotation)
        {
            if (currentTarget)
            {
                var camDir = (currentState.forward * targetLookAt.forward) + ((currentState.right * currentSwitchRight) * targetLookAt.right);
                camDir = camDir.normalized;
                var targetPos = new Vector3(currentTarget.position.x, currentTarget.position.y, currentTarget.position.z) + currentTarget.transform.up * offSetPlayerPivot;
                current_cPos = targetPos + currentTarget.transform.up * currentHeight;
                return current_cPos + (camDir * (distance));
            }
            else
            {
                return transform.position;
            }
        }

        //********************************************************************************//
        // >> CUSTOM CAMERA LOGIC OVERRIDE <<                                             //
        //********************************************************************************//
        // This method overrides the base class's CameraMovement function.                //
        // The new logic prioritizes pushing the camera towards the player in narrow      //
        // spaces, and only raises the camera's height as a last resort when it gets      //
        // too close. This prevents the camera from going over the player's head in       //
        // tight corridors.                                                               //
        //********************************************************************************//
/*
        protected override void CameraMovement(bool forceUpdate = false)
        {
            if (currentTarget == null || targetCamera == null || (!firstStateIsInit && !forceUpdate))
            {
                base.CameraMovement(forceUpdate);
                return;
            }

            transformWeight = Mathf.Clamp(transformWeight += Time.fixedDeltaTime, 0f, 1f);
            if (useSmooth)
            {
                currentState.Slerp(lerpState, smoothBetweenState * Time.fixedDeltaTime);
            }
            else
            {
                currentState.CopyState(lerpState);
            }

            if (currentState.useZoom)
            {
                currentZoom = Mathf.Clamp(currentZoom, currentState.minDistance, currentState.maxDistance);
                distance = useSmooth ? Mathf.Lerp(distance, currentZoom, lerpState.smooth * Time.fixedDeltaTime) : currentZoom;
            }
            else
            {
                distance = useSmooth ? Mathf.Lerp(distance, currentState.defaultDistance, lerpState.smooth * Time.fixedDeltaTime) : currentState.defaultDistance;
                currentZoom = currentState.defaultDistance;
            }

            targetCamera.fieldOfView = currentState.fov;
            cullingDistance = Mathf.Lerp(cullingDistance, currentZoom, smoothBetweenState * Time.fixedDeltaTime);
            currentSwitchRight = Mathf.Lerp(currentSwitchRight, switchRight, smoothSwitchSide * Time.fixedDeltaTime);
            var camDir = (currentState.forward * targetLookAt.forward) + ((currentState.right * currentSwitchRight) * targetLookAt.right);

            camDir = camDir.normalized;

            var targetPos = new Vector3(currentTarget.position.x, currentTarget.position.y, currentTarget.position.z) + currentTarget.transform.up * offSetPlayerPivot;
            currentTargetPos = targetPos;
            desired_cPos = targetPos + currentTarget.transform.up * currentState.height;
            
            current_cPos = firstUpdated ? targetPos + currentTarget.transform.up * currentHeight : Vector3.SmoothDamp(current_cPos, targetPos + currentTarget.transform.up * currentHeight, ref cameraVelocityDamp, lerpState.smoothDamp * Time.fixedDeltaTime);
            firstUpdated = false;
            RaycastHit hitInfo;

            // --- Start of Modified Collision Logic ---

            if (Physics.SphereCast(targetPos, checkHeightRadius, currentTarget.transform.up, out hitInfo, currentState.cullingHeight + 0.2f, cullingLayer))
            {
                var t = hitInfo.distance - 0.2f;
                t -= currentState.height;
                t /= (currentState.cullingHeight - currentState.height);
                cullingHeight = Mathf.Lerp(currentState.height, currentState.cullingHeight, Mathf.Clamp(t, 0.0f, 1.0f));
            }
            else
            {
                cullingHeight = useSmooth ? Mathf.Lerp(cullingHeight, currentState.cullingHeight, smoothBetweenState * Time.fixedDeltaTime) : currentState.cullingHeight;
            }

            currentHeight = useSmooth ? Mathf.Lerp(currentHeight, currentState.height, smoothBetweenState * Time.fixedDeltaTime) : currentState.height;
            var temporary_cPos = targetPos + currentTarget.transform.up * currentHeight;

            ClipPlanePoints clipPoints = targetCamera.NearClipPlanePoints(temporary_cPos + (camDir * distance), clipPlaneMargin);
            if (CullingRayCast(temporary_cPos, clipPoints, out hitInfo, distance, cullingLayer, Color.cyan))
            {
                distance = Mathf.Clamp(hitInfo.distance - clipPlaneMargin, 0.0f, currentState.defaultDistance);
            }

            if (distance < currentState.cullingMinDist)
            {
                var t = distance / currentState.cullingMinDist;
                currentHeight = Mathf.Lerp(cullingHeight, currentState.height, Mathf.Clamp01(t));
            }
            
            current_cPos = targetPos + currentTarget.transform.up * currentHeight;
            clipPoints = targetCamera.NearClipPlanePoints(current_cPos + (camDir * currentState.defaultDistance), clipPlaneMargin);
            if (CullingRayCast(current_cPos, clipPoints, out hitInfo, currentState.defaultDistance, cullingLayer, Color.cyan))
            {
                distance = Mathf.Clamp(hitInfo.distance - clipPlaneMargin, 0.0f, currentState.defaultDistance);
            }
            
            // --- End of Modified Collision Logic ---

            var lookPoint = current_cPos + targetLookAt.forward * targetCamera.farClipPlane;
            lookPoint += (targetLookAt.right * Vector3.Dot(camDir * (distance), targetLookAt.right));
            targetLookAt.position = current_cPos;

            float _mouseY = Mathf.LerpAngle(mouseYStart, mouseY, transformWeight);
            float _mouseX = Mathf.LerpAngle(mouseXStart, mouseX, transformWeight);
            Quaternion newRot = Quaternion.Euler(_mouseY + offsetMouse.y, _mouseX + offsetMouse.x, 0);
            targetLookAt.rotation = useSmooth ? Quaternion.Lerp(targetLookAt.rotation, newRot, smoothCameraRotation * Time.fixedDeltaTime) : newRot;
            selfRigidbody.MovePosition(Vector3.Lerp(startPosition, current_cPos + (camDir * (distance)), transformWeight));
            var rotation = Quaternion.LookRotation((lookPoint) - selfRigidbody.position);

            if (lockTarget)
            {
                CalculeLockOnPoint();

                if (!(currentState.cameraMode.Equals(TPCameraMode.FixedAngle)))
                {
                    var collider = lockTarget.GetComponent<Collider>();
                    if (collider != null)
                    {
                        var point = (collider.bounds.center + Vector3.up * heightOffset) - selfRigidbody.position;
                        var euler = Quaternion.LookRotation(point).eulerAngles - rotation.eulerAngles;
                        if (isNewTarget)
                        {
                            lookTargetAdjust.x = Mathf.LerpAngle(lookTargetAdjust.x, euler.x, lockTargetWeight);
                            lookTargetAdjust.y = Mathf.LerpAngle(lookTargetAdjust.y, euler.y, lockTargetWeight);
                            lookTargetAdjust.z = Mathf.LerpAngle(lookTargetAdjust.z, euler.z, lockTargetWeight);
                            if (Vector3.Distance(lookTargetAdjust, euler) < .5f)
                            {
                                isNewTarget = false;
                            }
                        }
                        else
                        {
                            lookTargetAdjust = euler;
                        }
                    }
                }
            }
            else
            {
                lookTargetAdjust.x = Mathf.LerpAngle(lookTargetAdjust.x, 0, currentState.smooth * Time.fixedDeltaTime);
                lookTargetAdjust.y = Mathf.LerpAngle(lookTargetAdjust.y, 0, currentState.smooth * Time.fixedDeltaTime);
                lookTargetAdjust.z = Mathf.LerpAngle(lookTargetAdjust.z, 0, currentState.smooth * Time.fixedDeltaTime);
            }
            var _euler = rotation.eulerAngles + lookTargetAdjust;
            _euler.z = 0;
            var _rot = Quaternion.Euler(_euler + currentState.rotationOffSet);
            selfRigidbody.MoveRotation(Quaternion.Lerp(startRotation, _rot, transformWeight));
movementSpeed = Vector2.zero;
        }
        */
    }
    
}