using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using System.Data;
using System.Xml;
using Project2.hogwarts1;

namespace Project2
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class BPS : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button updateButton;
		private System.Windows.Forms.TextBox usernameTextbox;
		private System.Windows.Forms.TextBox longTextBox;
		private System.Windows.Forms.TextBox latTextBox;
		private System.Windows.Forms.Label bigLabel;
		private System.Windows.Forms.MenuItem settingsMenu;
		private System.Windows.Forms.MenuItem alertsMenuItem;
		private System.Windows.Forms.MenuItem broadcastMenuItem;
		private System.Windows.Forms.MenuItem aboutMenu;
		private System.Windows.Forms.Label latLabel;
		private System.Windows.Forms.Label longLabel;
		private System.Windows.Forms.MainMenu mainMenu1;

		public BPS()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			base.Dispose( disposing );
		}
		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.updateButton = new System.Windows.Forms.Button();
			this.usernameTextbox = new System.Windows.Forms.TextBox();
			this.longTextBox = new System.Windows.Forms.TextBox();
			this.latTextBox = new System.Windows.Forms.TextBox();
			this.bigLabel = new System.Windows.Forms.Label();
			this.settingsMenu = new System.Windows.Forms.MenuItem();
			this.alertsMenuItem = new System.Windows.Forms.MenuItem();
			this.broadcastMenuItem = new System.Windows.Forms.MenuItem();
			this.aboutMenu = new System.Windows.Forms.MenuItem();
			this.latLabel = new System.Windows.Forms.Label();
			this.longLabel = new System.Windows.Forms.Label();
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.Add(this.settingsMenu);
			this.mainMenu1.MenuItems.Add(this.aboutMenu);
			// 
			// updateButton
			// 
			this.updateButton.Location = new System.Drawing.Point(120, 232);
			this.updateButton.Size = new System.Drawing.Size(96, 24);
			this.updateButton.Text = "Update";
			this.updateButton.Click += new System.EventHandler(this.updateButton_Click);
			// 
			// usernameTextbox
			// 
			this.usernameTextbox.Location = new System.Drawing.Point(16, 232);
			this.usernameTextbox.Size = new System.Drawing.Size(96, 22);
			this.usernameTextbox.Text = "cameron";
			// 
			// longTextBox
			// 
			this.longTextBox.Location = new System.Drawing.Point(120, 200);
			this.longTextBox.Size = new System.Drawing.Size(96, 22);
			this.longTextBox.Text = "-82.893390";
			// 
			// latTextBox
			// 
			this.latTextBox.Location = new System.Drawing.Point(16, 200);
			this.latTextBox.Size = new System.Drawing.Size(96, 22);
			this.latTextBox.Text = "34.667238";
			// 
			// bigLabel
			// 
			this.bigLabel.Location = new System.Drawing.Point(24, 16);
			this.bigLabel.Size = new System.Drawing.Size(200, 152);
			this.bigLabel.Text = "Click Update to begin";
			// 
			// settingsMenu
			// 
			this.settingsMenu.MenuItems.Add(this.broadcastMenuItem);
			this.settingsMenu.MenuItems.Add(this.alertsMenuItem);
			this.settingsMenu.Text = "Settings";
			// 
			// alertsMenuItem
			// 
			this.alertsMenuItem.Text = "Alerts";
			this.alertsMenuItem.Click += new System.EventHandler(this.alertsMenuItem_Click);
			// 
			// broadcastMenuItem
			// 
			this.broadcastMenuItem.Checked = true;
			this.broadcastMenuItem.Text = "Broadcast";
			this.broadcastMenuItem.Click += new System.EventHandler(this.broadcastMenuItem_Click);
			// 
			// aboutMenu
			// 
			this.aboutMenu.Text = "About";
			this.aboutMenu.Click += new System.EventHandler(this.aboutMenu_Click);
			// 
			// latLabel
			// 
			this.latLabel.Location = new System.Drawing.Point(16, 184);
			this.latLabel.Size = new System.Drawing.Size(96, 16);
			this.latLabel.Text = "Latitude";
			// 
			// longLabel
			// 
			this.longLabel.Font = new System.Drawing.Font("Tahoma", 9F, System.Drawing.FontStyle.Regular);
			this.longLabel.Location = new System.Drawing.Point(120, 184);
			this.longLabel.Size = new System.Drawing.Size(96, 16);
			this.longLabel.Text = "Longitude";
			// 
			// BPS
			// 
			this.Controls.Add(this.longLabel);
			this.Controls.Add(this.latLabel);
			this.Controls.Add(this.bigLabel);
			this.Controls.Add(this.latTextBox);
			this.Controls.Add(this.longTextBox);
			this.Controls.Add(this.usernameTextbox);
			this.Controls.Add(this.updateButton);
			this.Menu = this.mainMenu1;
			this.Text = "B.P.S.";

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>

		static void Main() 
		{
			Application.Run(new BPS());
		}

		private void aboutMenu_Click(object sender, System.EventArgs e)
		{
			MessageBox.Show("Created by Cameron Boyle and Matthew Coull");
		}

		private void broadcastMenuItem_Click(object sender, System.EventArgs e)
		{
			broadcastMenuItem.Checked = !broadcastMenuItem.Checked;
		}

		private void alertsMenuItem_Click(object sender, System.EventArgs e)
		{
			alertsMenuItem.Checked = !alertsMenuItem.Checked;
		}

		private void updateXML()
		{
			//This code reads the xml file into an XmlDocument Object so that I can loop through the nodes
			XmlTextReader reader = new XmlTextReader("\\Program Files\\Project2\\contacts.xml");
			XmlDocument xmlDoc = new XmlDocument();
			xmlDoc.Load(reader);
			XmlNode listnode = xmlDoc.DocumentElement;
			XmlNode cursornode;
			string username;

			for(int x = 0; x < listnode.ChildNodes.Count; x++)
			{//This iterates through all of the contacts one by one
				//Set cursornode to the current contact
				cursornode = listnode.ChildNodes[x];
				username = cursornode.ChildNodes[0].InnerText;


				if(username.ToLower() == usernameTextbox.Text.ToLower())
				{//update the elements in the xmlDoc
					//Get info out of the node
					if(broadcastMenuItem.Checked == true)
					{//save brouadcast status
						cursornode.ChildNodes[1].InnerText = "on";
					}
					else
					{
						cursornode.ChildNodes[1].InnerText = "off";
					}
					//save coordinates
					cursornode.ChildNodes[2].InnerText = latTextBox.Text;
					cursornode.ChildNodes[3].InnerText = longTextBox.Text;
					//save update time
					cursornode.ChildNodes[4].InnerText = System.DateTime.Now.ToShortTimeString();
				}
			}		
			//Have to close the reader filestream before we can write back to the file
			reader.Close();

			//This code writed back the modified XML to the same file and automatically formats the spacing
			XmlTextWriter writer = new XmlTextWriter("\\Program Files\\Project2\\contacts.xml",null);
			writer.Formatting = Formatting.Indented;
			xmlDoc.Save(writer);
			writer.Close();
		}


		private void doWebUpdateXML()
		{
			string newXML = "";
			hogwarts1.Service1	hw = new hogwarts1.Service1();

			newXML += "<contactlist><contact>";
			newXML += "<username>" + usernameTextbox.Text.ToLower() + "</username>";
			if(broadcastMenuItem.Checked == true)
			{//save brouadcast status
				newXML += "<status>on</status>";
			}
			else
			{
				newXML += "<status>off</status>";
			}
			newXML += "<latitude>" + latTextBox.Text + "</latitude>";
			newXML += "<longitude>" + longTextBox.Text + "</longitude>";
			newXML += "<time>" + System.DateTime.Now.ToShortTimeString() + "</time>";
			newXML += "</contact></contactlist>";
			hw.UpdateXML(newXML);

		}

		
		private void doWebGetXML()
		{
			string newXML = "";
			hogwarts1.Service1	hw = new hogwarts1.Service1();
			newXML = hw.GetXML(usernameTextbox.Text.ToLower());

			//MessageBox.Show(newXML);
			
			//This code reads the xml into an XmlDocument Object so that I can loop through the nodes
			XmlDocument xmlDoc = new XmlDocument();
			xmlDoc.InnerXml = newXML;
			
			
			//This code writed back the modified XML to the same file and automatically formats the spacing
			XmlTextWriter writer = new XmlTextWriter("\\Program Files\\Project2\\contacts.xml",null);
			writer.Formatting = Formatting.Indented;
			xmlDoc.Save(writer);
			writer.Close();

		}

		private void displayList()
		{
			//This code reads the xml file into an XmlDocument Object so that I can loop through the nodes
			XmlTextReader reader = new XmlTextReader("\\Program Files\\Project2\\contacts.xml");
			XmlDocument xmlDoc = new XmlDocument();
			xmlDoc.Load(reader);
			reader.Close();
			XmlNode listnode = xmlDoc.DocumentElement;
			XmlNode cursornode;
			bigLabel.Text = "";
			string location = "";
			string username, status,latitude,longitude,time;
			double dist;
			
			for(int x = 0; x < listnode.ChildNodes.Count; x++)
			{//This iterates through all of the contacts one by one
				//Set cursornode to the current contact
				cursornode = listnode.ChildNodes[x];
				
				//Get info out of the node
				username = cursornode.ChildNodes[0].InnerText;
				status = cursornode.ChildNodes[1].InnerText;
				latitude = cursornode.ChildNodes[2].InnerText;
				longitude = cursornode.ChildNodes[3].InnerText;
				time = cursornode.ChildNodes[4].InnerText;

				if(status != "off")
				{//Only display the contact if they are active
					//Now I begin concatenating the text that will be displayed for this contact
					bigLabel.Text += username;
					
					//Show this contact's distance from the current user
					dist = getDist(latTextBox.Text, longTextBox.Text, latitude, longitude);
					if(dist > 0.09)
					{
						bigLabel.Text += " => ";
						bigLabel.Text += dist;
						bigLabel.Text += " Miles ";
						bigLabel.Text += getDir(latTextBox.Text, longTextBox.Text, latitude, longitude);
						bigLabel.Text += "\n";
					}
					location = getLocation(latitude,longitude);
					if(location != "")
					{//Show the location name if the contact is within the radius of a hangout
						bigLabel.Text += "    (";
						bigLabel.Text += location;
					}
					else
					{//If the contact is not in a hangout, display coordinates
						bigLabel.Text += "\n";
						bigLabel.Text += "       (";
						bigLabel.Text += Math.Round(Convert.ToDouble(latitude),4);
						if(latitude.StartsWith("-"))
						{
							bigLabel.Text += "S";
						}
						else
						{
							bigLabel.Text += "N";
						}
						bigLabel.Text += ", " + Math.Round(Convert.ToDouble(longitude),4);
						if(longitude.StartsWith("-"))
						{
							bigLabel.Text += "W";
						}
						else
						{
							bigLabel.Text += "E";
						}
					}
					bigLabel.Text += ")\n\n";
				}
			}
		}

		private void doAlerts(double radius)
		{
			//This code reads the xml file into an XmlDocument Object so that I can loop through the nodes
			XmlTextReader reader = new XmlTextReader("\\Program Files\\Project2\\contacts.xml");
			XmlDocument xmlDoc = new XmlDocument();
			xmlDoc.Load(reader);
			reader.Close();
			XmlNode listnode = xmlDoc.DocumentElement;
			XmlNode cursornode;
			string username,status,latitude,longitude;
			double dist;
			
			for(int x = 0; x < listnode.ChildNodes.Count; x++)
			{//This iterates through all of the contacts one by one
				//Set cursornode to the current contact
				cursornode = listnode.ChildNodes[x];
				
				//Get info out of the node
				username = cursornode.ChildNodes[0].InnerText;
				status = cursornode.ChildNodes[1].InnerText;
				latitude = cursornode.ChildNodes[2].InnerText;
				longitude = cursornode.ChildNodes[3].InnerText;

				if(status != "off" && username.ToLower() != usernameTextbox.Text.ToLower())
				{//Only alert on active contacts
					dist = getDist(latTextBox.Text, longTextBox.Text, latitude, longitude);
					if(dist <= radius)
					{
						MessageBox.Show("You are within " + radius + " miles of " + username + "!");
					}
				}
			}		
		}

		private string getLocation(string mylat, string mylong)
		{
			//This code reads the xml file into an XmlDocument Object so that I can loop through the nodes
			XmlTextReader reader = new XmlTextReader("\\Program Files\\Project2\\locations.xml");
			XmlDocument xmlDoc = new XmlDocument();
			xmlDoc.Load(reader);
			reader.Close();
			XmlNode listnode = xmlDoc.DocumentElement;
			XmlNode cursornode;
			string mylocation, locationname,radius,latitude,longitude;
			double dist, prevdist;
			prevdist = 1000000.0;
			mylocation = "";

			for(int x = 0; x < listnode.ChildNodes.Count; x++)
			{//This iterates through all of the locations one by one
				//Set cursornode to the current location
				cursornode = listnode.ChildNodes[x];
				
				//Get info out of the node
				locationname = cursornode.ChildNodes[0].InnerText;
				radius = cursornode.ChildNodes[1].InnerText;
				latitude = cursornode.ChildNodes[2].InnerText;
				longitude = cursornode.ChildNodes[3].InnerText;

				dist = getDist(mylat, mylong, latitude, longitude);
				if(dist <= Convert.ToDouble(radius) && dist <= prevdist)
				{
					mylocation = locationname;
				}

			}	
			return mylocation;
		}


		private double getDist(string strLat1, string strLong1, string strLat2, string strLong2)
		{//this method calculates the distance in miles between 2 sets of decimal lat&long coordinates
			double dist = 0;

			//convert string type degrees into double type radians
			double lat1 = System.Convert.ToDouble(strLat1)*Math.PI/180.0;
			double long1 = System.Convert.ToDouble(strLong1)*Math.PI/180.0;
			double lat2 = System.Convert.ToDouble(strLat2)*Math.PI/180.0;
			double long2 = System.Convert.ToDouble(strLong2)*Math.PI/180.0;

			//this gynormous formula gives the great circle distance between to coordinate sets
			//meaning that the distance calculated even takes into account the curvature of the earth
			dist = Math.Cos(lat1)*Math.Cos(long1)*Math.Cos(lat2)*Math.Cos(long2);
			dist += Math.Cos(lat1)*Math.Sin(long1)*Math.Cos(lat2)*Math.Sin(long2);
			dist += Math.Sin(lat1)*Math.Sin(lat2);
			dist = Math.Acos(dist);
			dist *= 3963.1; //multiply by the radius of earth in miles
			
			return Math.Round(dist,2);
		}

		private string getDir(string strLat1, string strLong1, string strLat2, string strLong2)
		{//this method calculates the compass direction from the first set of coordinates to the second
			string direction = "";
			//convert string type degrees into double type degrees for comparisons
			double lat1 = System.Convert.ToDouble(strLat1);
			double long1 = System.Convert.ToDouble(strLong1);
			double lat2 = System.Convert.ToDouble(strLat2);
			double long2 = System.Convert.ToDouble(strLong2);

			if(lat1 <= lat2)
			{
				direction += "N";
			}
			else
			{
				direction += "S";
			}
			if(long1 <= long2)
			{
				direction += "E";
			}
			else
			{
				direction += "W";
			}
			return direction;
		}
		private void updateButton_Click(object sender, System.EventArgs e)
		{

			if(broadcastMenuItem.Checked)
			{//we are broadcasting, so update
				// updateXML(); local version
				doWebUpdateXML(); // web service version
			}
			
			doWebGetXML(); //WORKING!!!!

			//refresh the contact list based on the local XML
			displayList();

			if(alertsMenuItem.Checked)
			{//handle proximity alerts
				doAlerts(2.0);
			}
		}
	}
}