using System;
using System.Threading.Tasks;
using System.Threading;
using Grpc.Core;
using Aurora.Models.Media;

namespace Aurora.Services.Player
{

    public interface IPlayer
    {

        /// <summary>
        /// Event handler for changing playback states.
        /// </summary>
        event PlaybackStateChangedEventHandler PlaybackStateChanged;

        event MediaChangedEventHandler MediaChanged;

        /// <summary>
        /// The state of playback
        /// </summary>
        /// <value></value>
        PlaybackState PlaybackState { get; }

        bool IsLoaded { get; }

        bool IsMediaLoaded(BaseMedia media);

        BaseMedia CurrentMedia { get; }

        float CurrentMediaPosition { get; }

        long CurrentMediaLength { get; }

        /// <summary>
        /// Load media into the media player.
        /// </summary>
        /// <param name="media">Media to load</param>
        Task LoadMedia(BaseMedia media);

        /// <summary>
        /// Play currently loaded media.
        /// </summary>
        void Play();

        /// <summary>
        /// Pause currently loaded media.
        /// </summary>
        void Pause();

        /// <summary>
        /// Stop currently loaded media.
        /// </summary>
        void Stop();

        void Enqueue(BaseMedia song);

        void Dequeue(BaseMedia song);

    }
}