using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Net;
using System.Windows.Forms;
using System.IO;

namespace jokes
{
    public partial class Form1 : Form
    {
        private int countdownTime,nowSet;
        private Random ran=new Random();
        private StringBuilder jok1 = new StringBuilder("笑話1");
        private StringBuilder jok2 = new StringBuilder("笑話2");
        private StringBuilder jok3 = new StringBuilder("笑話3");
        public Form1()
        {
            InitializeComponent();
        }

        private void question(int set)
        {
            
            switch (set)
            {
                case 1:
                    textBox1.Text = jok1.ToString();
                    nowSet = 1;
                    break;
                case 2:
                    textBox1.Text = jok2.ToString();
                    nowSet = 2;
                    break;
                case 3:
                    textBox1.Text = jok3.ToString();
                    nowSet = 3;
                    break;
            }

        }

        private void button1_Click(object sender, EventArgs e)
        {
            question(1);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            question(2);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            question(3);
        }

        private void button4_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBox1.Checked==true)
            {
                countdown.Enabled = true;
                
            }
            else
            {
                countdown.Enabled = false;
                label2.Text = "";
            }

        }

        private void countdown_Tick(object sender, EventArgs e)
        {
            if (countdownTime > 0)
            {
                showLabel2(countdownTime);
                countdownTime--;
                
            }
            else
            {
                showLabel2(countdownTime);
                question((++nowSet)%3+1);
                countdownTime=10;
	        }
        }

        private void showLabel2(int i)
        {
            label2.Text = "倒數計時："+i+"秒";
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            countdownTime = 10;
        }

        private void time_Tick(object sender, EventArgs e)
        {
            label1.Text = "現在時間" + DateTime.Now.ToUniversalTime().ToString();
        }

        private void button5_Click(object sender, EventArgs e)
        {

            string web_list="";
            int Newest = getnew(ref web_list);//最新的
            for (int i = Newest , t = 1; t <= 3; i=i-5)
            {
                bool check = getCheck(i,ref web_list);
                if (!check)
                    continue;

                switch (t)
                {
                    case 1:
                        jok1=new StringBuilder("Joke1\r\n"+textin(i));
                        break;
                    case 2:
                        jok2 = new StringBuilder("Joke2\r\n" + textin(i));
                        break;
                    case 3:
                        jok3 = new StringBuilder("Joke3\r\n" + textin(i));
                        break;
                    default:
                        break;
                }
                t++;
                System.Threading.Thread.Sleep(2000);
            }
            MessageBox.Show("Download over!");

        }

        private int getnew(ref string web_list)
        { 
            WebRequest request = WebRequest.Create(@"http://k...content-available-to-author-only...m.com/joke/newjoke.php");
            request.Method = "POST";
            WebResponse myResponse = request.GetResponse();
            StreamReader sr = new StreamReader(myResponse.GetResponseStream());
            
            web_list = String.Copy(sr.ReadToEnd());
            sr.Close();
            myResponse.Close();
            int first = web_list.IndexOf("article");
            return Int32.Parse(web_list.Substring(first + 31, 6));
        }

        private bool getCheck(int tg,ref string web_list)
        {
            int first = web_list.IndexOf(tg.ToString());
            if (first == -1)
                return false;
            else
                return true;
        }

        private string textin(int tg)
        {
            WebRequest text_request = WebRequest.Create(@"http://k...content-available-to-author-only...m.com/joke/article.php?cid=general&id="+tg);
            text_request.Method = "GET";
            WebResponse text_myResponse = text_request.GetResponse();
            StreamReader text_sr = new StreamReader(text_myResponse.GetResponseStream(),System.Text.Encoding.GetEncoding("big5"));
            string text_result = text_sr.ReadToEnd();
            string outStr;
            byte[] byt = System.Text.Encoding.GetEncoding("Big5").GetBytes(text_result);
            outStr = System.Text.Encoding.GetEncoding("Big5").GetString(byt);
            text_sr.Close();
            text_myResponse.Close();
            int first = outStr.IndexOf("art_content");
            int last = outStr.LastIndexOf("art_content");
            string final = outStr.Substring(first + 15, last - first - 20);
            return final;
        }
    }
}