using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;

namespace 淘宝网址解析
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        static Dictionary<string, string> 淘宝网站 = new Dictionary<string, string>
        {
            ["淘宝网页版"] = "item.taobao.com",
            ["淘宝手机版"] = "m.taobao.com",
            ["淘宝手机版new"] = "new.m.taobao.com",
            ["淘宝短网址"] = "m.tb.cn",
            ["天猫网址"] = "detail.tmall.com",
            ["天猫超市"] = "chaoshi.detail.tmall.com",
        };
        BindingList<网址参数> 参数列表 = new();
        private async void button1_ClickAsync(object sender, EventArgs e)
        {
            //清空参数列表
            参数列表.Clear();
            string temp = "";
            //取出完整网址
            try
            {
                temp = textBox1.Text.Substring(textBox1.Text.IndexOf("http"));
            }
            catch (Exception)
            {
                MessageBox.Show("请输入正确的网址,例如https://detail.tmall.com/item.htm?id=640330331740");
                return;
            }

            temp = temp.Split(' ')[0];

            //解析链接
            var 网页域名 = "";
            var 网站页面 = "";
            try
            {
                网页域名 = temp.Split('/')[2];
                网站页面 = temp.Split('/')[3].Split('?')[0];
            }
            catch (Exception)
            {
                MessageBox.Show("网址可能不是太正确...");
                return;
            }


            if (网页域名 == 淘宝网站["淘宝短网址"])
            {
                //解析短网址
                temp = await 解析短网址(temp);
                temp = temp.Substring(textBox1.Text.IndexOf("http"));
                temp = temp.Split(' ')[0];
            }
            if (checkBox1.Checked) if (网页域名 == 淘宝网站["淘宝手机版new"] || 网页域名 == 淘宝网站["淘宝手机版"])
                {
                    网页域名 = 淘宝网站["淘宝网页版"];
                    网站页面 = @"item.htm";
                }

            var 结果网址 = $"https://{网页域名}/{网站页面}?";
            temp = temp.Substring(temp.IndexOf("htm?") + 4);
            var 参数 = temp.Split("&");
            bool 找到id = false;
            foreach (var item in 参数)
            {
                var 参数与内容 = item.Split("=");
                参数列表.Add(new 网址参数 { 参数名称 = 参数与内容[0], 参数内容 = 参数与内容[1] });
                if (参数与内容[0] == "id")
                { 
                    结果网址 += $"{参数与内容[0]}={参数与内容[1]}"; 
                    找到id = true;
                }     
            }
            if(找到id == false) { MessageBox.Show("未找到宝贝id!结果大概率是寄了","可恶!"); }
            dataGridView1.DataSource = 参数列表;
            dataGridView1.Columns[0].AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells;
            dataGridView1.Columns[1].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
            textBox2.Text = 结果网址;
            if (checkBox2.Checked)
            {
                Process.Start(new ProcessStartInfo()
                {
                    FileName = 结果网址,
                    UseShellExecute = true
                });
            }
        }


        private static HttpClient http客户端 = new();
        private async Task<string> 解析短网址(string 网址)
        {
            try
            {
                HttpResponseMessage response = await http客户端.GetAsync(网址);
                response.EnsureSuccessStatusCode();
                string responseBody = await response.Content.ReadAsStringAsync();
                // Above three lines can be replaced with new helper method below
                // string responseBody = await client.GetStringAsync(uri);
                var aa = responseBody.Substring(responseBody.IndexOf(@"var url = 'https://new.m.taobao.com"));
                aa = aa.Substring(0, aa.IndexOf('\'', aa.IndexOf('\'') + 1));
                aa = aa.Replace(@"var url = '", "").Replace(@"'", "");
                return aa;

            }
            catch (HttpRequestException e)
            {
                Debug.WriteLine("\nException Caught!");
                Debug.WriteLine("Message :{0} ", e.Message);
                return null;
            }
        }

        public class 网址参数
        {
            public string 参数名称 { get; set; }
            public string 参数内容 { get; set; }

        }

        private void button2_Click(object sender, EventArgs e)
        {
            http客户端.BaseAddress = new Uri($"https://{淘宝网站["淘宝短网址"]}");

        }
    }
}