namespace UnityEngine.Animations.Rigging
{
    /// <summary>
    /// The MultiParent constraint data.
    /// </summary>
    [System.Serializable]
    public struct MultiParentConstraintData : IAnimationJobData, IMultiParentConstraintData
    {
        [SerializeField] Transform m_ConstrainedObject;

        [SerializeField, SyncSceneToStream, WeightRange(0f, 1f)] WeightedTransformArray m_SourceObjects;

        [NotKeyable, SerializeField] Vector3Bool m_ConstrainedPositionAxes;
        [NotKeyable, SerializeField] Vector3Bool m_ConstrainedRotationAxes;
        [NotKeyable, SerializeField] bool m_MaintainPositionOffset;
        [NotKeyable, SerializeField] bool m_MaintainRotationOffset;

        /// <inheritdoc />
        public Transform constrainedObject { get => m_ConstrainedObject; set => m_ConstrainedObject = value; }

        /// <inheritdoc />
        public WeightedTransformArray sourceObjects
        {
            get => m_SourceObjects;
            set => m_SourceObjects = value;
        }

        /// <inheritdoc />
        public bool maintainPositionOffset { get => m_MaintainPositionOffset; set => m_MaintainPositionOffset = value; }
        /// <inheritdoc />
        public bool maintainRotationOffset { get => m_MaintainRotationOffset; set => m_MaintainRotationOffset = value; }

        /// <inheritdoc />
        public bool constrainedPositionXAxis { get => m_ConstrainedPositionAxes.x; set => m_ConstrainedPositionAxes.x = value; }
        /// <inheritdoc />
        public bool constrainedPositionYAxis { get => m_ConstrainedPositionAxes.y; set => m_ConstrainedPositionAxes.y = value; }
        /// <inheritdoc />
        public bool constrainedPositionZAxis { get => m_ConstrainedPositionAxes.z; set => m_ConstrainedPositionAxes.z = value; }
        /// <inheritdoc />
        public bool constrainedRotationXAxis { get => m_ConstrainedRotationAxes.x; set => m_ConstrainedRotationAxes.x = value; }
        /// <inheritdoc />
        public bool constrainedRotationYAxis { get => m_ConstrainedRotationAxes.y; set => m_ConstrainedRotationAxes.y = value; }
        /// <inheritdoc />
        public bool constrainedRotationZAxis { get => m_ConstrainedRotationAxes.z; set => m_ConstrainedRotationAxes.z = value; }

        /// <inheritdoc />
        string IMultiParentConstraintData.sourceObjectsProperty => ConstraintsUtils.ConstructConstraintDataPropertyName(nameof(m_SourceObjects));

        /// <inheritdoc />
        bool IAnimationJobData.IsValid()
        {
            if (m_ConstrainedObject == null || m_SourceObjects.Count == 0)
                return false;

            foreach (var src in m_SourceObjects)
                if (src.transform == null)
                    return false;

            return true;
        }

        /// <inheritdoc />
        void IAnimationJobData.SetDefaultValues()
        {
            m_ConstrainedObject = null;
            m_ConstrainedPositionAxes = new Vector3Bool(true);
            m_ConstrainedRotationAxes = new Vector3Bool(true);
            m_SourceObjects.Clear();
            m_MaintainPositionOffset = false;
            m_MaintainRotationOffset = false;
        }
    }

    /// <summary>
    /// MultiParent constraint
    /// </summary>
    [DisallowMultipleComponent, AddComponentMenu("Animation Rigging/Multi-Parent Constraint")]
    [HelpURL("https://docs.unity3d.com/Packages/com.unity.animation.rigging@1.3/manual/constraints/MultiParentConstraint.html")]
    public class MultiParentConstraint : RigConstraint<
        MultiParentConstraintJob,
        MultiParentConstraintData,
        MultiParentConstraintJobBinder<MultiParentConstraintData>
        >
    {
        /// <inheritdoc />
        protected override void OnValidate()
        {
            base.OnValidate();
            var weights = m_Data.sourceObjects;
            WeightedTransformArray.OnValidate(ref weights);
            m_Data.sourceObjects = weights;
        }
    }
}