using LibVLCSharp.Shared;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.DirectoryServices.ActiveDirectory;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace robospot_camera_finder
{
    public partial class StreamViewer : Form
    {
        public LibVLC _libVLC;
        public MediaPlayer _mp;

        string username = "admin";
        string password = "RoboSpot10";
        string cam_ip = "";

        public StreamViewer(string name, string ip)
        {
            InitializeComponent();
            _libVLC = new LibVLC();
            _mp = new MediaPlayer(_libVLC);
            cam_ip = ip;

            timerUpdateZoom.Start();
            updateZoomSlider();

            videoView.MediaPlayer = _mp;
            var media = new Media(_libVLC, new Uri("rtsp://" + ip + "/profile2/media.smp"));
            media.AddOption(":network-caching=25");
            _mp.Play(media);
            media.Dispose();
            this.Text = name;
        }

        private void updateZoomSlider()
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://" + cam_ip + "/stw-cgi/ptzcontrol.cgi?msubmenu=query&action=view&Query=Zoom");
            request.Credentials = new NetworkCredential(username, password);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            string text;
            using (var sr = new StreamReader(response.GetResponseStream())) { text = sr.ReadToEnd(); }
            string[] resp_lines = text.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
            string zoom_value = resp_lines[1].Substring(resp_lines[1].LastIndexOf('=') + 1);
            tbZoom.Value = int.Parse(zoom_value);

        }

        private void sendZoomValue(string zoom_pulse)
        {
            // clamp values to allowed range
            if (int.Parse(zoom_pulse) < 10)
            {
                zoom_pulse = "10";
            }
            if (int.Parse(zoom_pulse) > 9999)
            {
                zoom_pulse = "9999";
            }

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://" + cam_ip + "/stw-cgi/ptzcontrol.cgi?msubmenu=absolute&action=control&ZoomPulse=" + zoom_pulse);
            request.Credentials = new NetworkCredential(username, password);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        }

        private void StreamViewer_FormClosed(object sender, FormClosedEventArgs e)
        {
            _mp.Stop();
            _mp.Dispose();
            _libVLC.Dispose();
        }

        private void tbZoom_KeyUp(object sender, KeyEventArgs e)
        {
            sendZoomValue(tbZoom.Value.ToString());
        }

        private void tbZoom_MouseUp(object sender, MouseEventArgs e)
        {
            sendZoomValue(tbZoom.Value.ToString());
        }

        private void timerUpdateZoom_Tick(object sender, EventArgs e)
        {
            updateZoomSlider();
        }
    }
}