using AlicizaX.Runtime;

namespace AlicizaX.Resource.Runtime
{
    /// <summary>
    /// 加载资源回调函数集。
    /// </summary>
    public sealed class LoadAssetCallbacks
    {
        private readonly LoadAssetSuccessCallback m_LoadAssetSuccessCallback;
        private readonly LoadAssetFailureCallback m_LoadAssetFailureCallback;
        private readonly LoadAssetUpdateCallback m_LoadAssetUpdateCallback;

        /// <summary>
        /// 初始化加载资源回调函数集的新实例。
        /// </summary>
        /// <param name="loadAssetSuccessCallback">加载资源成功回调函数。</param>
        public LoadAssetCallbacks(LoadAssetSuccessCallback loadAssetSuccessCallback)
            : this(loadAssetSuccessCallback, null, null)
        {
        }

        /// <summary>
        /// 初始化加载资源回调函数集的新实例。
        /// </summary>
        /// <param name="loadAssetSuccessCallback">加载资源成功回调函数。</param>
        /// <param name="loadAssetFailureCallback">加载资源失败回调函数。</param>
        public LoadAssetCallbacks(LoadAssetSuccessCallback loadAssetSuccessCallback, LoadAssetFailureCallback loadAssetFailureCallback)
            : this(loadAssetSuccessCallback, loadAssetFailureCallback, null)
        {
        }

        /// <summary>
        /// 初始化加载资源回调函数集的新实例。
        /// </summary>
        /// <param name="loadAssetSuccessCallback">加载资源成功回调函数。</param>
        /// <param name="loadAssetUpdateCallback">加载资源更新回调函数。</param>
        public LoadAssetCallbacks(LoadAssetSuccessCallback loadAssetSuccessCallback, LoadAssetUpdateCallback loadAssetUpdateCallback)
            : this(loadAssetSuccessCallback, null, loadAssetUpdateCallback)
        {
        }

        /// <summary>
        /// 初始化加载资源回调函数集的新实例。
        /// </summary>
        /// <param name="loadAssetSuccessCallback">加载资源成功回调函数。</param>
        /// <param name="loadAssetFailureCallback">加载资源失败回调函数。</param>
        /// <param name="loadAssetUpdateCallback">加载资源更新回调函数。</param>
        public LoadAssetCallbacks(LoadAssetSuccessCallback loadAssetSuccessCallback, LoadAssetFailureCallback loadAssetFailureCallback, LoadAssetUpdateCallback loadAssetUpdateCallback)
        {
            if (loadAssetSuccessCallback == null)
            {
                throw new GameFrameworkException("Load asset success callback is invalid.");
            }

            m_LoadAssetSuccessCallback = loadAssetSuccessCallback;
            m_LoadAssetFailureCallback = loadAssetFailureCallback;
            m_LoadAssetUpdateCallback = loadAssetUpdateCallback;
        }

        /// <summary>
        /// 获取加载资源成功回调函数。
        /// </summary>
        public LoadAssetSuccessCallback LoadAssetSuccessCallback
        {
            get
            {
                return m_LoadAssetSuccessCallback;
            }
        }

        /// <summary>
        /// 获取加载资源失败回调函数。
        /// </summary>
        public LoadAssetFailureCallback LoadAssetFailureCallback
        {
            get
            {
                return m_LoadAssetFailureCallback;
            }
        }

        /// <summary>
        /// 获取加载资源更新回调函数。
        /// </summary>
        public LoadAssetUpdateCallback LoadAssetUpdateCallback
        {
            get
            {
                return m_LoadAssetUpdateCallback;
            }
        }
    }
}