using System;
using System.Collections.Generic;
using Azerion.BlueStack.Common;
using Azerion.BlueStack.Internal;
using UnityEngine;

// WIP
namespace Azerion.BlueStack.API
{
    public class NativeAdLoader
    {
        private IAdLoaderClient _adLoaderClient;
        public event EventHandler<BlueStackError> OnNativeAdFailedToLoad;
        public event EventHandler<NativeAdEventArgs> OnNativeAdLoaded;

        internal bool IsAdLoaded;
        internal GameObject AdGameObject;
        private NativeAd _nativeAd;

        public NativeAdLoader(string adUnitId)
        {
            AdUnitId = adUnitId;

            NativeUtils.CheckInitialization();

            _nativeAd = new NativeAd(AdUnitId);

            _nativeAd.OnNativeAdDidFail += (sender, args) => { OnNativeAdFailedToLoad?.Invoke(this, args); };

            _nativeAd.OnNativeAdDidLoad += (_sender, _args) =>
            {
                NativeAdEventArgs nativeAdEventArgs = new NativeAdEventArgs
                {
                    nativeAd = _nativeAd
                };

                this.OnNativeAdLoaded?.Invoke(this, nativeAdEventArgs);
            };
        }

        public string AdUnitId { get; private set; }
        public HashSet<NativeAdType> AdTypes { get; private set; }
        public HashSet<string> FormatIds { get; private set; }
        internal int NumberOfAdsToLoad { get; private set; }

        public void Load() => this._nativeAd.Load();
        public void Load(Preference preference) => this._nativeAd.Load(preference);
        public void Destroy() => this._nativeAd.Destroy();
    }
}