using UnityEngine;

namespace OnlyScove.Scripts
{
    public class CameraController : MonoBehaviour
    {
        [SerializeField] InputReader inputReader;
        [SerializeField] Transform followTarget;
        [SerializeField] float positionSmoothTime = 0.12f;
        [SerializeField] float rotationSmoothTime = 5f;
        [SerializeField] Vector2 framingOffset;

        [Header("Components")]
        [SerializeField] private CameraRotationHandler rotationHandler = new CameraRotationHandler();
        [SerializeField] private CameraZoomHandler zoomHandler = new CameraZoomHandler();
        [SerializeField] private CameraCollisionHandler collisionHandler = new CameraCollisionHandler();
        [SerializeField] private CameraOcclusionTransparency occlusionTransparency = new CameraOcclusionTransparency();
        [SerializeField] private CameraDynamicFOV dynamicFOV = new CameraDynamicFOV();
        [SerializeField] private CameraCharacterFading characterFading = new CameraCharacterFading();
        [SerializeField] private CameraSideBias sideBias = new CameraSideBias();
        [SerializeField] private CameraShakeManager shakeManager = new CameraShakeManager();
        
        private Vector3 _currentVelocity;
        private Camera _cam;

        private void Start()
        {
            _cam = GetComponent<Camera>();
            Cursor.visible = false;            
            Cursor.lockState = CursorLockMode.Locked;
            
            rotationHandler.Initialize(transform);
        }

        private void Update()
        {
            // Handle Input-related updates first
            if (inputReader != null)
            {
                rotationHandler.HandleRotation(inputReader, followTarget, rotationSmoothTime);
                zoomHandler.HandleZoom(inputReader);
                sideBias.HandleSideBias(inputReader);
                dynamicFOV.HandleDynamicFOV(_cam, inputReader);
            }

            // Update camera rotation
            transform.rotation = rotationHandler.CurrentRotation;

            // Calculate focus position with framing offset and side bias
            Vector3 focusPosition = followTarget.position + rotationHandler.CurrentRotation * new Vector3(framingOffset.x + sideBias.CurrentSideBias, framingOffset.y, 0);
            
            // Handle collision
            float targetDistance = collisionHandler.CheckCollision(focusPosition, rotationHandler.CurrentRotation, zoomHandler.CurrentDistance, zoomHandler.MinDistance);

            // Handle character fading
            characterFading.HandleCharacterFading(targetDistance);

            // Calculate target position
            Vector3 targetPosition = focusPosition - rotationHandler.CurrentRotation * new Vector3(0, 0, targetDistance);
            
            // Handle camera shake
            shakeManager.HandleShake();
            
            // Apply final position and rotation
            transform.position = Vector3.SmoothDamp(transform.position, targetPosition, ref _currentVelocity, positionSmoothTime) + shakeManager.ShakeOffset;
            
            // Handle occlusion transparency (needs camera's final position and rotation)
            occlusionTransparency.HandleTransparency(transform, focusPosition);
        }

        public void Shake(float intensity, float duration)
        {
            shakeManager.Shake(intensity, duration);
        }

        public void TriggerFallImpactShake(float fallHeight)
        {
            shakeManager.TriggerFallImpactShake(fallHeight);
        }

        public Quaternion PlanarRotation => rotationHandler.PlanarRotation;
    }
}