using System.Collections;
using LibMMD.Unity3D.Animation;
using UnityEngine;

namespace LibMMD.Unity3D
{
    /// <summary>Consumer-facing contract for one runtime-loaded MMD model instance.</summary>
    public interface IMmdModelInstance
    {
        GameObject RootObject { get; }
        MmdModelOptions Options { get; }

        string ModelPath { get; }
        string MotionPath { get; }
        double MotionLength { get; }
        double MotionPos { get; set; }
        bool IsPlaying { get; set; }
        bool IsLooping { get; set; }
        bool EnableVmdIk { get; set; }
        bool EnableLogging { get; set; }
        int SubMeshCount { get; }
        bool HasVisibleSubMesh { get; }
        MmdUnityConfig MaterialSettings { get; }

        IEnumerator LoadModel(string path);
        IEnumerator LoadModelAndMotion(string modelPath, string motionPath);
        IEnumerator LoadMotion(string path);
        IEnumerator LoadMotion(MmdMotionAsset motionAsset);
        void LoadPose(string path);
        void LoadBonePose(string path);
        void ResetMotion();
        void ResetPhysics();
        void SetRenderersVisible(bool visible);
        void UpdateMaterialSettings(MmdUnityConfig config);
        string[] GetSubMeshNames();
        bool IsSubMeshVisible(int subMeshIndex);
        void SetSubMeshVisible(int subMeshIndex, bool visible);
        int SetSubMeshVisible(string materialName, bool visible);
        SkinnedMeshRenderer[] GetRenderers(bool visibleOnly = false);
        bool TryGetVisibleWorldBounds(out Bounds bounds);
    }

    /// <summary>Creates runtime MMD model instances without exposing their component setup.</summary>
    public static class MmdModelInstance
    {
        public static IMmdModelInstance Create(
            MmdModelOptions options = null, string name = "MMDGameObject")
        {
            var root = MmdGameObject.Create(options ?? new MmdModelOptions(), name);
            return root.GetComponent<MmdGameObject>();
        }
    }
}