using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Session.RemoveAll();
    }
    protected void BtnLogin_Click(object sender, EventArgs e)
    {
        if (this.userName.Text.Trim() == "" || this.userPwd.Text.Trim() == ""||this.TextBox1.Text=="")
        {
            if (this.userName.Text.Trim() == "" && this.userPwd.Text.Trim() == ""&&this.TextBox1.Text.Trim()=="")
            {
                Response.Write("<script>alert('用戶名、密碼、驗證碼不能為空!')</script>");
            }
            else if (this.userName.Text.Trim() == "")
            {
                Response.Write("<script>alert('用戶名不能為空!')</script>");
            }
            else if (this.userPwd.Text.Trim() == "")
            {
                Response.Write("<script>alert('密碼不能為空!')</script>");
            }
            else {
                Response.Write("<script>alert('驗證碼不能為空!')</script>");
            }
        }        
        else
        {
            if (String.Compare(Request.Cookies["CheckCode"].Value, this.TextBox1.Text, true) == 0)
            {
                int count = 0;
                if (this.DDLtype.SelectedValue == "學(xué)生")
                {

                    int exist;
                    exist = (new projClass()).ifStuExist(this.userName.Text);
                    if (exist == 1)
                    {
                        count = (new projClass()).getUser(this.userName.Text, this.userPwd.Text);
                        if (count == 1)
                        {
                            string stuId = this.userName.Text;
                            Session["stuId"] = stuId;
                            Response.Redirect("StudentInfo.aspx");
                            //	Response.Redirect("userInfo.aspx?stuId="+stuId);
                        }
                        else Response.Write("<script>alert(\"密碼錯誤!請重新輸入\");</script>");
                    }
                    //else if(count==2)
                    //Response.Write("<script>alert(\"密碼錯誤!請重新輸入\");</script>");
                    else Response.Write("<script>alert(\"學(xué)號不存在！請確認(rèn)學(xué)號輸入正確\");</script>");
                }
                else if (this.DDLtype.SelectedValue == "管理員")
                {
                    count = (new projClass()).getAdmin(this.userName.Text, this.userPwd.Text);
                    if (count > 0)
                    {
                        // Response.Write("<script>alert(\"登陸成功！\");</script>");
                        string adminId = this.userName.Text;
                        Session["adminId"] = adminId;
                        Response.Redirect("AdministratorInfo.aspx");
                    }
                    else Response.Write("<script>alert(\"登錄失敗!\");</script>");


                }
                else if (this.DDLtype.SelectedValue == "教師")
                {
                    count = (new projClass()).getTeacher(this.userName.Text, this.userPwd.Text);
                    if (count > 0)
                    {
                        string teacherId = this.userName.Text;
                        Session["teacherId"] = teacherId;
                        Response.Redirect("TeacherInfo.aspx");
                    }
                    else Response.Write("<script>alert(\"登錄失敗!\");</script>");

                }
            }
            else if (String.Compare(Request.Cookies["CheckCode"].Value, this.TextBox1.Text, true) != 0) {
                Response.Write("<script>alert(\"驗證碼錯誤，請輸入正確的驗證碼!\");</script>");
                return;
            }
            else{
                Response.Write("<script>alert(\"您的瀏覽器設(shè)置已被禁用 Cookies，您必須設(shè)置瀏覽器允許使用 Cookies 選項后才能使用本系統(tǒng)!\");</script>");
                return;
            }

        }
    }
}