using System.Threading.Tasks;
using UnityEngine;
using UnityEngine.Networking;
using Fusion;
using System.Linq;

public class AssetBundleDownloaderAndLoader : MonoBehaviour
{
    public string assetBundleUrl;
    public GameObject loadedMapPrefab;

    public async Task<bool> DownloadAndPrepareMap()
    {
        string spaceUrl = EN.instance.spaces.FirstOrDefault()?.assetBundleRoomId?.url;
        if (string.IsNullOrEmpty(spaceUrl))
        {
            Debug.LogError("[Loader] No AssetBundle URL found.");
            return false;
        }

        assetBundleUrl = "http://194.62.43.230:8000/" + spaceUrl;
        Debug.Log("[Loader] Downloading AssetBundle from: " + assetBundleUrl);

        using (UnityWebRequest uwr = UnityWebRequestAssetBundle.GetAssetBundle(assetBundleUrl))
        {
            var operation = uwr.SendWebRequest();
            while (!operation.isDone)
                await Task.Yield();

            if (uwr.result != UnityWebRequest.Result.Success)
            {
                Debug.LogError("[Loader] AssetBundle download failed: " + uwr.error);
                return false;
            }

            AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(uwr);
            if (bundle == null)
            {
                Debug.LogError("[Loader] Failed to load AssetBundle.");
                return false;
            }

            string[] assetNames = bundle.GetAllAssetNames();
            if (assetNames.Length == 0)
            {
                Debug.LogError("[Loader] No assets found in AssetBundle.");
                return false;
            }

            loadedMapPrefab = bundle.LoadAsset<GameObject>(assetNames[0]);
            if (loadedMapPrefab == null || loadedMapPrefab.GetComponent<NetworkObject>() == null)
            {
                Debug.LogError("[Loader] Prefab missing or missing NetworkObject.");
                return false;
            }

            Debug.Log("[Loader] AssetBundle downloaded and prefab prepared.");
            bundle.Unload(false); // Keep asset in memory
            return true;
        }
    }
}