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

namespace EnAliKeywordSearch
{
    public partial class Frm_Main : Form
    {
        public Frm_Main()
        {
            InitializeComponent();

            backgroundWorker.ProgressChanged += backgroundWorker_ProgressChanged;
            backgroundWorker.DoWork += backgroundWorker_DoWork;
            backgroundWorker.RunWorkerCompleted += backgroundWorker_RunWorkerCompleted;
        }

        private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            
        }

        void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {

        }
        private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
        {

        }


        void DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker bw = sender as BackgroundWorker;
            
        }


        private void search_Click(object sender, EventArgs e)
        {
            search.Enabled = false;
            foreach (DataGridViewRow item in this.SearchView.Rows)
            {
                string cpy = item.Cells["company"].Value == null ? "" : item.Cells["company"].Value.ToString();
                string keys = item.Cells["keyword"].Value == null ? "" : item.Cells["keyword"].Value.ToString();
                if (cpy != "" && keys != "")
                {
                    foreach (string key in keys.Split(','))
                    {
                        int maxpage = this.ToInt(max.Text);
                        int index = this.ResultView.Rows.Add();
                        this.ResultView.Rows[index].Cells["公司名称"].Value = cpy;
                        this.ResultView.Rows[index].Cells["关键词"].Value = key;
                        state.Text = "正在查询 " + cpy + " 的关键词 " + key;
                        Application.DoEvents();
                        for (int i = 1; i <= maxpage; i++)
                        {
                            string url = string.Empty;
                            this.ResultView.Rows[index].Cells["排名"].Value = "正在查询第" + i + "页...";
                            Application.DoEvents();
                            if (enAli.Checked == true)
                                url = String.Format("http://www.alibaba.com/products/F0/{0}/{1}.html", key, i);
                            else
                                url = String.Format("http://s.1688.com/selloffer/offer_search.htm?keywords={0}&beginPage={1}", key, i);
                            string htmldoc = HttpHelper.Get(url);
                            if (string.IsNullOrEmpty(htmldoc))
                            {
                                this.ResultView.Rows[index].Cells["排名"].Value = "网页抓取失败";
                                break;
                            }
                            if (htmldoc.Contains(cpy))
                            {
                                this.ResultView.Rows[index].Cells["排名"].Value = "第" + i + "页";
                                break;
                            }
                            if (i == maxpage)
                            {
                                this.ResultView.Rows[index].Cells["排名"].Value = maxpage + "页以后";
                                break;
                            }
                            Application.DoEvents();
                        }
                        this.ResultView.Rows[index].Cells["查询时间"].Value = DateTime.Now.ToString();
                        Application.DoEvents();
                    }
                }
                Application.DoEvents();
            }
            state.Text = "所有关键词查询完成!";
            search.Enabled = true;
        }

        private int ToInt(String str)
        {
            int s = 0;
            int.TryParse(str, out s);
            return s;
        }

        private void Frm_Main_Load(object sender, EventArgs e)
        {

        }
        #region 窗体事件
        private void saveout_Click(object sender, EventArgs e)
        {
            SaveFileDialog cpm = new SaveFileDialog();
            cpm.Filter = "查排名数据|*.cpm";
            if (cpm.ShowDialog() == DialogResult.OK)
            {
                List<string> data = new List<string>();
                foreach (DataGridViewRow item in this.SearchView.Rows)
                {
                    string cpy = item.Cells["company"].Value == null ? "" : item.Cells["company"].Value.ToString();
                    string keys = item.Cells["keyword"].Value == null ? "" : item.Cells["keyword"].Value.ToString();
                    if (cpy != "" && keys != "")
                        data.Add(cpy + "|" + keys);
                }
                Config cfg = new Config(cpm.FileName);
                cfg.WriteListToTextFile(data);
            }
        }

        private void readin_Click(object sender, EventArgs e)
        {
            OpenFileDialog cpm = new OpenFileDialog();
            cpm.Filter = "查排名数据|*.cpm";
            if (cpm.ShowDialog() == DialogResult.OK)
            {
                Config cfg = new Config(cpm.FileName);
                List<string> data = cfg.ReadTextFileToList();
                string cpy = string.Empty;
                string keys = string.Empty;
                foreach (string item in data)
                {
                    string[] str = item.Split('|');
                    if (str.Length == 2)
                    {
                        cpy = str[0];
                        keys = str[1];
                        int index = this.SearchView.Rows.Add();
                        this.SearchView.Rows[index].Cells["company"].Value = cpy;
                        this.SearchView.Rows[index].Cells["keyword"].Value = keys;
                    }
                }
            }
        }

        private void clearresult_Click(object sender, EventArgs e)
        {
            ResultView.Rows.Clear();
        }

        private void clearsearch_Click(object sender, EventArgs e)
        {
            SearchView.Rows.Clear();
        }
        #endregion
    }
}