using System;
using System.Threading.Tasks;
using UnityEngine;

namespace Unity.Services.Mediation
{
    /// <summary>
    /// Interface of an Banner Ad.
    /// </summary>
    public interface IBannerAd : IDisposable
    {
        /// <summary>
        /// Event to be triggered by the adapter when an Ad is loaded.
        /// </summary>
        event EventHandler OnLoaded;

        /// <summary>
        /// Event to be triggered by the adapter when an Ad fails to load.
        /// </summary>
        event EventHandler<LoadErrorEventArgs> OnFailedLoad;

        /// <summary>
        /// Event to be triggered by the adapter when the user clicks on the Ad.
        /// </summary>
        event EventHandler OnClicked;

        /// <summary>
        /// Event to be triggered by the adapter when the Ad refreshes
        /// </summary>
        event EventHandler<LoadErrorEventArgs> OnRefreshed;

        /// <summary>
        /// Get the current state of the ad.
        /// </summary>
        AdState AdState { get; }

        /// <summary>
        /// Get the ad unit id set during construction.
        /// </summary>
        string AdUnitId { get; }

        /// <summary>
        /// Get the banner size set during construction.
        /// </summary>
        BannerAdSize Size { get; }

        /// <summary>
        /// Sets the position of the banner ad.
        /// </summary>
        /// <param name="anchor">Anchor on which the banner position is based</param>
        /// <param name="positionOffset">The X, Y coordinates offsets, relative to the anchor point</param>
        void SetPosition(BannerAdAnchor anchor, Vector2 positionOffset = new Vector2());

        /// <summary>
        /// Loads the banner ad, and displays it when ready
        /// </summary>
        /// <returns>LoadAsync Task</returns>
        Task LoadAsync();
    }
}