using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using spider;
using System.IO;

namespace htmldown
{
	/// <summary>
	/// Form1 的摘要說明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Label label2;
		/// <summary>
		/// 必需的設計器變量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗體設計器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 調用后添加任何構造函數代碼
			//
		}

		/// <summary>
		/// 清理所有正在使用的資源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗體設計器生成的代碼
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(64, 32);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(320, 21);
			this.textBox1.TabIndex = 0;
			this.textBox1.Text = "";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(24, 32);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(32, 23);
			this.label1.TabIndex = 1;
			this.label1.Text = "網址";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(136, 72);
			this.button1.Name = "button1";
			this.button1.TabIndex = 2;
			this.button1.Text = "下載";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(112, 120);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(224, 21);
			this.textBox2.TabIndex = 3;
			this.textBox2.Text = "c:\\";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(32, 120);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(56, 23);
			this.label2.TabIndex = 4;
			this.label2.Text = "存儲目錄";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(408, 173);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.textBox1);
			this.Name = "Form1";
			this.Text = "網頁批量下載器";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 應用程序的主入口點。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			if(textBox1.Text!="")
			{if(download(textBox1.Text.ToString()))
				 System.Windows.Forms.MessageBox.Show("下載完畢");
				else
				 System.Windows.Forms.MessageBox.Show("出錯了，請檢查鏈接是否正確");

			}
		}
		private bool download(string rurl)
		{
			url myurl;
			Http myhttp=new Http();
			Spider myspider=new Spider();
			string urls,page;
			int i=1;
			try
			{myurl=new url(rurl);
				Uri burl=new Uri(rurl);
				myspider.ProsessPage(myhttp.GetPage(burl));}
			catch 
			{return false;}
					
			

			while(myspider.outurl.Count>0)
			{urls=myspider.outurl.Dequeue().ToString();
				if(myurl.ProcessUrl(urls)!=null)
					{
						page=myhttp.GetPage(myurl.ProcessUrl(urls));
							if(page!=null)
								{
								writehtml(page,i);
								i++;
								}
					}				
				}
			return true;
							
				
				
		}
		private void writehtml(string pagehtml,int j)
		{
			string path =textBox2.Text.ToString();
			
			System.Text.Encoding code = System.Text.Encoding.GetEncoding("gb2312");
			
			string temp =Application.StartupPath.ToString();
			
			StreamWriter sw=null;
			if(path.LastIndexOf("\\")!=path.Length)
				path+="\\";
			string filename=path+j.ToString()+".html";
			
			try
			{sw=new StreamWriter(filename,false,code);
				sw.Write(pagehtml);
				sw.Flush();
			}
			catch(Exception ex)
			{
				System.Windows.Forms.MessageBox.Show(ex.Message);
			}
			finally
			{
				sw.Close();
			}
		}
	}
}