using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using UAS_MES_NEW.PublicMethod;
using UAS_Tools_HY.PublicMethods;

namespace UAS_MES_Tools
{
    public partial class Login : Form
    {
        public Login()
        {
            InitializeComponent();
        }

        public Login(bool isFirst)
        {
            InitializeComponent();
            isLogin = isFirst;
        }

        public string _Account, _Password;
        public bool isLogin = true;
        DataTable dt;

        private void Login_Load(object sender, EventArgs e)
        {
            showMsg.Text = "";
            Thread LoadDBThread = new Thread(() =>
            {
                string result = LoadDB();

                if (showMsg.InvokeRequired)
                {
                    showMsg.Invoke(new Action(() =>
                    {
                        showMsg.Text = result;
                        LoginIN.Enabled = true;
                    }));
                }

            });
            LoadDBThread.Start();
            LoginIN.Enabled = false;

            if (isLogin)
            {
                Account.Text = BaseUtil.GetCacheData("Account").ToString();
                Password.Text = BaseUtil.GetCacheData("Password").ToString();
            }
        }

        private void Account_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode != Keys.Enter) return;

            Password.Focus();
            Password.SelectAll();
        }

        private void Password_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode != Keys.Enter) return;

            LoginIN.Focus();
        }

        private void LoginIN_Click(object sender, EventArgs e)
        {
            _Account = Account.Text;
            _Password = Password.Text;

            DateTime now = DateTime.Now;
            string formattedTime = now.ToString("HH:mm:ss");

            string ErrorMessage;
            if (CheckUserLogin(Account.Text, Password.Text, "N_MES_HY", out ErrorMessage))
            {
                if (isLogin)
                {
                    BaseUtil.SetCacheData("Account", Account.Text);
                    BaseUtil.SetCacheData("Password", Password.Text);
                    this.DialogResult = DialogResult.OK;
                }
                else
                {
                    dt = ConnectDB.ExecuteSelect($"select * from employee where em_code = :em_code and em_type = 'admin'", 
                        new Dictionary<string, object> { 
                            { "em_code", Account.Text }
                        });
                    if (dt.Rows.Count > 0)
                    {
                        this.DialogResult = DialogResult.Yes;
                    }
                    else
                    {
                        this.DialogResult = DialogResult.No;
                    }
                }

                showMsg.Text = $"{formattedTime} 登录成功";
                LogManager.DoLog("登陆成功" + Account.Text + "  " + Password.Text);
                this.Close();
                this.Dispose();
            }
            else
            {
                showMsg.Text = $"{formattedTime} {ErrorMessage}";
            }
        }

        public static bool CheckUserLogin(string iUserCode, string iPassWord, string Master, out string oErrorMessage)
        {
            oErrorMessage = "";
            try
            {
                string url = "http://erp.ubtob.net:11764/mes/" + "mobile/login.action";//html调用的地址              
                HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(url);
                if (webrequest == null)
                {
                    return false;
                }
                webrequest.Method = "POST";
                webrequest.Timeout = 1000;
                webrequest.ContentType = "application/x-www-form-urlencoded";
                System.Collections.Hashtable pars = new System.Collections.Hashtable();
                pars.Add("username", iUserCode);
                pars.Add("password", iPassWord);
                pars.Add("master", Master);
                string buffer = "";
                //发送POST数据 
                if (!(pars == null || pars.Count == 0))
                {
                    foreach (string key in pars.Keys)
                    {
                        buffer = buffer + "&" + key + "=" + pars[key].ToString();
                    }
                    byte[] data = Encoding.UTF8.GetBytes(buffer);
                    using (Stream stream = webrequest.GetRequestStream())
                    {
                        stream.Write(data, 0, data.Length);
                    }
                }

                string[] values = webrequest.Headers.GetValues("Content-Type");
                WebResponse myResponse = webrequest.GetResponse();

                using (Stream resStream = myResponse.GetResponseStream())
                {
                    StreamReader newReader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
                    string Content = newReader.ReadToEnd();
                    Dictionary<string, object> dic = new Dictionary<string, object>();
                    dic = BaseUtil.ToDictionary(Content);
                    if (!dic.ContainsKey("erpaccount"))
                    {
                        oErrorMessage = dic["reason"].ToString();
                        return false;
                    }
                    newReader.Close();
                }
            }
            catch (Exception ex)
            {
                LogManager.DoLog(ex.Message.ToString());
            }
            return true;
        }

        private string LoadDB()
        {
            try
            {
                if (ConnectDB.TestConnection())
                {
                    return $"数据库连接成功";
                }
                else
                {
                    return $"数据库连接失败";
                }
            }
            catch (Exception ex)
            {
                return $"{ex.Message}";
            }
        }
    }
}