using System;
using System.Net;
using System.IO;
using System.Windows.Forms;
using System.Text;
using System.Drawing;
using System.Globalization;
using Microsoft.Win32;
using System.Runtime.InteropServices;
using System.Threading;

class Script 
{
	const string usage = "Usage: geturl.cs URL filename [/p[:user[:password]]]...\nSaves URL text to a file. Optionally proxy authemtication can be used\n";

	static public void Main(string[] args)
	{
		if (args.Length < 2 || (args.Length == 1 && (args[0] == "?" || args[0] == "/?" || args[0] == "-?" || args[0].ToLower() == "help")))
		{
			Console.WriteLine(usage);
		}
		else
		{
			try
			{
				string user = null, pw = null;
				if (args.Length > 2 && args[2].StartsWith("/p"))
				{
					string[] credentials = args[2].Split(":".ToCharArray(), 3);
					if (credentials.Length > 1)
					{
						user = credentials[1];
					}
					if (credentials.Length > 2)
					{
						pw = credentials[2];
					}
					
					if (user == null || pw == null)
					if (!AuthenticationForm.GetCredentials(ref user, ref pw, "Proxy Authentication"))
					{
						return;
					}
				}
			
				string htmlStr = GetHTML(args[0], user, pw);
				
				using (StreamWriter sw = new StreamWriter(args[1])) 
				{
					StringReader strReader = new StringReader(htmlStr);
					string line;
					while ((line = strReader.ReadLine()) != null) 
					{
						//this works better that sw.Write(htmlStr) because of nicer text layout
						sw.WriteLine(line); 
					}
				}
			}
			catch (Exception e)
			{
				Console.WriteLine(e);
			}
		}
	}

	static string GetHTML(string url, string proxyUser, string proxyPw)
	{
		StringBuilder sb  = new StringBuilder();
		byte[] buf = new byte[8192];

		HttpWebRequest  request  = (HttpWebRequest)WebRequest.Create(url);
		if (proxyUser != null)
		{
			//WebProxy proxyObject = (WebProxy)GlobalProxySelection.Select; 
			//request.Proxy = proxyObject;
			//proxyObject.Credentials = new NetworkCredential(proxyUser, proxyPw);
			GlobalProxySelection.Select.Credentials = new NetworkCredential(proxyUser, proxyPw);
		}
		
		HttpWebResponse response = (HttpWebResponse)request.GetResponse();

		Stream resStream = response.GetResponseStream();

		NetworkCredential test = (NetworkCredential)CredentialCache.DefaultCredentials;

		string tempString = null;
		int count = 0;

		while (0 < (count = resStream.Read(buf, 0, buf.Length)))
		{
			tempString = Encoding.ASCII.GetString(buf, 0, count);
			sb.Append(tempString);
		}
		return sb.ToString();
	}


	public class AuthenticationForm : System.Windows.Forms.Form
{
	public string userName {get {return textBox1.Text;} set {textBox1.Text = value;}}
	public string password {get {return textBox2.Text;} set {textBox2.Text = value;}}

	private System.Windows.Forms.Button button1;
	private System.Windows.Forms.Button button2;
	private System.Windows.Forms.TextBox textBox1;
	private System.Windows.Forms.TextBox textBox2;
	private System.Windows.Forms.Label label1;
	private System.Windows.Forms.Label label2;
		
	private System.ComponentModel.Container components = null;

	public AuthenticationForm(string userName, string password, string title)
	{
		InitializeComponent();
		textBox1.Text = userName;
		textBox2.Text = password;
		if (textBox1.Text != "")
		{
			textBox2.Select();
		}
		if (title != null)
		{
			this.Text = title;
		}
	}

	static public bool GetCredentials(ref string userName, ref string password, string title)
	{
		using(AuthenticationForm dlg = new AuthenticationForm(userName, password, title))
		{
			if (DialogResult.OK == dlg.ShowDialog())
			{
				userName = dlg.userName;
				password = dlg.password;
				return true;
			}
			else 
			{
				return false;
			}
		}
	}
	protected override void Dispose( bool disposing )
	{
		if( disposing )
		{
			if(components != null)
			{
				components.Dispose();
			}
		}
		base.Dispose( disposing );
	}
	#region Windows Form Designer generated code
	private void InitializeComponent()
	{
		this.button1 = new System.Windows.Forms.Button();
		this.button2 = new System.Windows.Forms.Button();
		this.textBox1 = new System.Windows.Forms.TextBox();
		this.textBox2 = new System.Windows.Forms.TextBox();
		this.label1 = new System.Windows.Forms.Label();
		this.label2 = new System.Windows.Forms.Label();
		this.SuspendLayout();
		// 
		// button1
		// 
		this.button1.DialogResult = System.Windows.Forms.DialogResult.OK;
		this.button1.Location = new System.Drawing.Point(40, 80);
		this.button1.Name = "button1";
		this.button1.Size = new System.Drawing.Size(72, 24);
		this.button1.TabIndex = 2;
		this.button1.Text = "&Ok";
		// 
		// button2
		// 
		this.button2.DialogResult = System.Windows.Forms.DialogResult.Cancel;
		this.button2.Location = new System.Drawing.Point(136, 80);
		this.button2.Name = "button2";
		this.button2.Size = new System.Drawing.Size(80, 24);
		this.button2.TabIndex = 3;
		this.button2.Text = "&Cancel";
		// 
		// textBox1
		// 
		this.textBox1.Location = new System.Drawing.Point(80, 8);
		this.textBox1.Name = "textBox1";
		this.textBox1.Size = new System.Drawing.Size(160, 20);
		this.textBox1.TabIndex = 0;
		this.textBox1.Text = "";
		// 
		// textBox2
		// 
		this.textBox2.Location = new System.Drawing.Point(80, 40);
		this.textBox2.Name = "textBox2";
		this.textBox2.PasswordChar = '*';
		this.textBox2.Size = new System.Drawing.Size(160, 20);
		this.textBox2.TabIndex = 1;
		this.textBox2.Text = "";
		// 
		// label1
		// 
		this.label1.Location = new System.Drawing.Point(8, 8);
		this.label1.Name = "label1";
		this.label1.Size = new System.Drawing.Size(64, 23);
		this.label1.TabIndex = 4;
		this.label1.Text = "User Name:";
		// 
		// label2
		// 
		this.label2.Location = new System.Drawing.Point(8, 40);
		this.label2.Name = "label2";
		this.label2.Size = new System.Drawing.Size(72, 23);
		this.label2.TabIndex = 4;
		this.label2.Text = "Password:";
		// 
		// AuthenticationForm
		// 
		this.AcceptButton = this.button1;
		this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
		this.CancelButton = this.button2;
		this.ClientSize = new System.Drawing.Size(250, 112);
		this.Controls.Add(this.label1);
		this.Controls.Add(this.textBox2);
		this.Controls.Add(this.textBox1);
		this.Controls.Add(this.button2);
		this.Controls.Add(this.button1);
		this.Controls.Add(this.label2);
		this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
		this.Name = "AuthenticationForm";
		this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
		this.Text = "Authentication";
		this.ResumeLayout(false);

	}
	#endregion
}
}