using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using 報到系統客戶端.Services;

namespace 報到系統客戶端
{
    public partial class LoginForm : Form
    {
        public LoginForm()
        {
            InitializeComponent();
            lbApiUrlBase.Text = string.Format("主機：{0}", ApiService.Instance.BaseUrl);
            lbVersion.Text = ClientSession.Version;
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private async void btnLogin_Click(object sender, EventArgs e)
        {
            try
            {
                btnLogin.Enabled = false;
                btnCancel.Enabled = false;
                btnLogin.Text = "登入中";
                Cursor.Current = Cursors.WaitCursor;
                Application.DoEvents();

                if (cbOffline.Checked)
                {
                    var loginResult = ClientSession.LoginOffline(txtUserID.Text);

                    if (loginResult.Item1)
                    {
                        DialogResult = DialogResult.OK;
                    }
                    else
                    {
                        MessageBox.Show(loginResult.Item2, "登入錯誤");
                    }
                }
                else
                {
                    var loginResult = await ClientSession.LoginAsync(txtUserID.Text, txtPassword.Text);

                    if (loginResult.Item1)
                    {
                        DialogResult = DialogResult.OK;
                    }
                    else
                    {
                        MessageBox.Show(loginResult.Item2, "登入錯誤");
                    }
                }
            }
            finally 
            {
                Cursor.Current = Cursors.Default;
                btnLogin.Enabled = true;
                btnCancel.Enabled = true;
                btnLogin.Text = "登入";
            }
        }

        private void LoginForm_Activated(object sender, EventArgs e)
        {
            txtUserID.Focus();
        }

        private void cbOffline_CheckStateChanged(object sender, EventArgs e)
        {
            txtPassword.Enabled = !cbOffline.Checked;
        }
    }
}