using UnityEngine;
using UnityEngine.Rendering;

/// <summary>
/// Self-contained state for one block being edited (placed or repositioned).
/// </summary>
public class BlockEditContext
{
    // Core data
    public GameObject GhostObject { get; internal set; }
    public Transform GhostTransform => GhostObject != null ? GhostObject.transform : null;
    public GameObject SourceObject { get; internal set; }  // null for new blocks
    public BlockData BlockData { get; internal set; }
    public Renderer[] GhostRenderers { get; internal set; }

    // visual data
    public bool AlignToSurfaceNormal { get; internal set; } = true;
    public bool SnapRotation { get; internal set; } = false;
    public float FollowSpeed { get; internal set; } = 20f;
    public float HeightOffset { get; internal set; } = 0f;
    public Color ValidTint { get; internal set; } = new Color(0.5f, 1f, 0.5f, 1f);
    public Color InvalidTint { get; internal set; } = new Color(1f, 0.5f, 0.5f, 1f);
    public Transform AttachPoint { get; internal set; }

    // type data
    public bool IsEditingExisting { get; internal set; }
    public Vector3 OriginalPosition { get; internal set; }
    public Quaternion OriginalRotation { get; internal set; }
    public bool IsValidPlacement { get; internal set; } = true;

    // editable state
    public Vector3 SurfacePoint { get; internal set; }
    public Vector3 SurfaceNormal { get; internal set; } = Vector3.up;
    public Vector3 RotationAxis { get; internal set; } = Vector3.up;

    // sockets
    public SocketPoint TargetSocket { get; internal set; }
    public SocketPoint MySocket { get; internal set; }

    // block references
    public Block Block { get; internal set; }
    public JointBlock JointBlock { get; internal set; }
    public SocketContainer Container { get; internal set; }


    // Behaviors
    public IGhostMovementStrategy CurrentStrategy { get; set; }
    public ISnapBehavior SnapBehavior { get; set; }
    public IPlacementHandler PlacementHandler { get; set; }
    public IBlockValidator Validator { get; set; }
    public IVisualFeedback VisualFeedback { get; set; }
    public IRotateHandler RotationHandler { get; set; }


    public bool IsActive => GhostObject != null && GhostObject.activeSelf;

    public void SetRotationAxis(Vector3 axis) => RotationAxis = axis;

    internal void SetFrameState(Vector3 surfacePoint, Vector3 surfaceNormal, SocketPoint mySocket, SocketPoint targetSocket)
    {
        SurfacePoint = surfacePoint;
        SurfaceNormal = surfaceNormal;
        MySocket = mySocket;
        TargetSocket = targetSocket;
    }
}