using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Tango.RemoteDesktop
{
    /// <summary>
    /// Represents a screen capture engine.
    /// </summary>
    /// <seealso cref="System.IDisposable" />
    public interface IScreenCaptureEngine : IDisposable
    {
        /// <summary>
        /// Gets or sets the screen capture method.
        /// </summary>
        ICaptureMethod CaptureMethod { get; set; }

        /// <summary>
        /// Gets or sets the screen capture region.
        /// </summary>
        CaptureRegion CaptureRegion { get; set; }

        /// <summary>
        /// Gets a value indicating whether this instance is currently capturing.
        /// </summary>
        bool IsStarted { get; }

        /// <summary>
        /// Gets or sets the frame rate per second.
        /// </summary>
        int FrameRate { get; set; }

        /// <summary>
        /// Gets or sets a value indicating whether to include the cursor when capturing.
        /// </summary>
        bool CaptureCursor { get; set; }

        /// <summary>
        /// Gets or sets a value indicating whether to enable image comparison.
        /// </summary>
        bool EnableComparer { get; set; }

        /// <summary>
        /// Start capturing.
        /// </summary>
        void Start();

        /// <summary>
        /// Stop capturing.
        /// </summary>
        void Stop();
    }

    /// <summary>
    /// Represents a screen capture engine.
    /// </summary>
    /// <typeparam name="TFrame">The type of the frame.</typeparam>
    /// <seealso cref="System.IDisposable" />
    public interface IScreenCaptureEngine<TFrame> : IScreenCaptureEngine where TFrame : IFrame
    {
        /// <summary>
        /// Occurs when a new screen frame is available.
        /// </summary>
        event EventHandler<ScreenCaptureFrameReceivedEventArgs<TFrame>> FrameReceived;

        /// <summary>
        /// Gets or sets the bitmap comparer.
        /// </summary>
        IBitmapComparer<TFrame> Comparer { get; set; }
    }
}