using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Video.DirectCapture;

namespace Tango.MachineStudio.Common.Video
{
    /// <summary>
    /// Represents the default implementation of <see cref="IVideoCaptureProvider"/>.
    /// </summary>
    /// <seealso cref="Tango.MachineStudio.Common.Video.IVideoCaptureProvider" />
    public class DefaultVideoCaptureProvider : IVideoCaptureProvider
    {
        /// <summary>
        /// Gets the available capture devices.
        /// </summary>
        public ObservableCollection<CaptureDevice> AvailableCaptureDevices { get; private set; }

        /// <summary>
        /// Initializes a new instance of the <see cref="DefaultVideoCaptureProvider"/> class.
        /// </summary>
        public DefaultVideoCaptureProvider()
        {
            AvailableCaptureDevices = new ObservableCollection<CaptureDevice>();

            var availableDevices = CaptureDevice.GetAvailableCaptureDevices();

            for (int i = 0; i < 3; i++)
            {
                if (i > availableDevices.Count - 1)
                {
                    AvailableCaptureDevices.Add(new CaptureDevice() { Device = null });
                }
                else
                {
                    AvailableCaptureDevices.Add(new CaptureDevice() { Device = availableDevices[i] });
                }
            }
        }
    }
}