using UnityEngine;
using UnityEditor;
using System.IO;
using System.Linq;
using UnityMeshSimplifier;

public class TestBuilder
{
    static readonly string RAW_PATH = "Assets/InputRaw";
    static readonly string ASSETBUNDLE_DIR = "Assets/InputRaw/assetbundles";

    public static void ManualConvert()
    {
        BuildTarget[] targets = {
            BuildTarget.Android, 
            BuildTarget.iOS, 
            BuildTarget.StandaloneLinux64,
            BuildTarget.StandaloneOSX, 
            BuildTarget.StandaloneWindows64, 
            BuildTarget.WebGL
        };

        try
        {
            AssetDatabase.Refresh();

            // 1. Ambil semua aset asli di folder InputRaw
            string[] allAssets = Directory.GetFiles(RAW_PATH, "*.*", SearchOption.AllDirectories)
                                          .Where(s => !s.EndsWith(".meta") && !s.Contains("assetbundles")).ToArray();

            if (!Directory.Exists(ASSETBUNDLE_DIR)) Directory.CreateDirectory(ASSETBUNDLE_DIR);

            // 2. PROSES PERAMPINGAN (SIMPLIFY) & LABELING
            foreach (BuildTarget t in targets)
            {
                string platformName = t.ToString(); 

                foreach (string path in allAssets)
                {
                    // Rampingkan poligon 50% untuk file 3D
                    if (path.EndsWith(".prefab") || path.EndsWith(".fbx")) {
                        GameObject go = AssetDatabase.LoadAssetAtPath<GameObject>(path);
                        if (go != null) SimplifyMeshInGameObject(go);
                    }
                    
                    // Beri label bundle sesuai nama platform (agar binary tanpa ekstensi)
                    AssetImporter importer = AssetImporter.GetAtPath(path);
                    if (importer != null) importer.assetBundleName = platformName;
                }

                Debug.Log($"🚀 [UNITY] Membangun binary platform: {platformName}");
                
                // Build binary platform tanpa ekstensi ke dalam folder assetbundles/
                BuildPipeline.BuildAssetBundles(
                    ASSETBUNDLE_DIR, 
                    BuildAssetBundleOptions.ForceRebuildAssetBundle, 
                    t
                );
            }

            Debug.Log("✅ [UNITY] Build binary selesai.");
            EditorApplication.Exit(0);
        }
        catch (System.Exception e) {
            Debug.LogError($"💀 Error: {e.Message}");
            EditorApplication.Exit(1);
        }
    }

    static void SimplifyMeshInGameObject(GameObject go)
    {
        var meshFilters = go.GetComponentsInChildren<MeshFilter>();
        foreach (var mf in meshFilters) {
            if (mf.sharedMesh != null) {
                var meshSimplifier = new UnityMeshSimplifier.MeshSimplifier();
                meshSimplifier.Initialize(mf.sharedMesh);
                meshSimplifier.SimplifyMesh(0.5f);
                mf.sharedMesh = meshSimplifier.ToMesh();
            }
        }
        var skinnedMeshes = go.GetComponentsInChildren<SkinnedMeshRenderer>();
        foreach (var smr in skinnedMeshes) {
            if (smr.sharedMesh != null) {
                var meshSimplifier = new UnityMeshSimplifier.MeshSimplifier();
                meshSimplifier.Initialize(smr.sharedMesh);
                meshSimplifier.SimplifyMesh(0.5f);
                smr.sharedMesh = meshSimplifier.ToMesh();
            }
        }
    }
}