using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace SUBD
{
    public partial class fAddUser : Form
    {
        public fAddUser()
        {
            InitializeComponent();
        }

        private void bPhoto_Click(object sender, EventArgs e)
        {
            openFileDialog1.Filter = "Image files(*.png; *.jpg; *jpeg; *.bmp)| *.png; *.jpg; *jpeg; *.bmp";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    pbImage.Image = new Bitmap(openFileDialog1.FileName);
                }
                catch
                {
                    MessageBox.Show("Невозможно открыть!", "Внимание",
                   MessageBoxButtons.OK, MessageBoxIcon.Warning);
                }
            }
        }

        private void bClear_Click(object sender, EventArgs e)
        {
            pbImage.Image = Properties.Resources.zag;
        }

        private void BAddUser_Click(object sender, EventArgs e)
        {
            Vis(tbFam, lErrorFam);
            Vis(tbName, lErrorName);
            Vis(tbOtch, lErrorOtch);
            VisTo(tbNaim, lNaim);
            VisTo(tbNumberHouse, lNumberHouse);
            VisPhoto(pbImage, lErrorPhoto);
            if (tbFam.Text != "" && tbName.Text != "" && tbOtch.Text != "" && tbNaim.Text != "" && tbNumberHouse.Text != "" && pbImage.Image != null)
            {
                string adr = cbUch.Text + " " + tbNaim.Text + ", " + "дом " + tbNumberHouse.Text;
                if (tbNumberKv.Text != "")
                {
                    adr += ", кв " + tbNumberKv.Text;
                }
                SqlConnection con = new SqlConnection(fMain.txtCon);
                con.Open();
                string txt = $@"insert into Teacher(FamTeacher, NameTeacher, OtchTeacher, Adr, Role, Pol)
values (N'{tbFam.Text}', N'{tbName.Text}', N'{tbOtch.Text}', N'{adr}',N'{lstIdRole[cbRole.SelectedIndex]}',N'{cbPol.Text}')";
                zapr1 = txt;
                SqlCommand com = new SqlCommand(txt, con);
                com.ExecuteNonQuery();
                con.Close();
                string idnewuser = "";
                con.Open();
                txt = "select * from Teacher";
                com = new SqlCommand(txt, con);
                SqlDataReader rez = com.ExecuteReader();
                while (rez.Read())
                {
                    idnewuser = rez["IdTeacher"].ToString();
                }
                con.Close();

                con.Open();
                MemoryStream stream = new MemoryStream();
                pbImage.Image.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
                NewPhoto = stream.ToArray();
                byte[] masImages = stream.ToArray();
                string txtqe = $@"update Teacher
set Photo=@newphoto
where idTeacher={idnewuser}";
                zapr2 = txtqe;
                com = new SqlCommand(txtqe, con);
                com.Parameters.AddWithValue("@newphoto", NewPhoto);
                com.ExecuteNonQuery();
                con.Close();
                NewPhoto = null;
                MessageBox.Show("Выполено!", "Внимание",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
                MessageBox.Show($"Запрос {zapr1}\nЗапрос2 {zapr2}");
                con.Close();
            }
            else
            {
                MessageBox.Show("Введите все данные!", "Неполный ввод", MessageBoxButtons.OK, MessageBoxIcon.Stop);
            }
        }
        List<string> lstIdRole = new List<string>();
        byte[] NewPhoto;

        void GetRole()
        {
            lstIdRole.Clear();
            cbRole.Items.Clear();
            SqlConnection con = new SqlConnection(fMain.txtCon);
            con.Open();
            string txt = "select * from RoleTeacher";
            SqlCommand com = new SqlCommand(txt, con);
            SqlDataReader rez = com.ExecuteReader();
            while (rez.Read())
            {
                lstIdRole.Add(rez["IdRole"].ToString());
                cbRole.Items.Add(rez["NameRole"].ToString());
            }
            con.Close();
        }
        void Vis(TextBox tb, Label l)
        {
            if (tb.Text == "")
                l.Visible = true;
            else
            {
                l.Visible = false;
            }
        }

        void VisTo(TextBox tb, Label l)
        {
            if (tb.Text != "")
            {
                l.ForeColor = Color.Black;
            }
            else
            {
                l.ForeColor = Color.DarkRed;
            }
        }

        void VisPhoto(PictureBox pb, Label l)
        {
            if (pbImage.Image == null)
            {
                l.Visible = true;
            }
            else l.Visible = false;
        }
        string zapr1 = "";
        string zapr2 = "";

        private void fAddUser_Load(object sender, EventArgs e)
        {
            this.Icon = Properties.Resources.imgIco;
            pbLogo.Image = Properties.Resources.imgPng;
            GetRole();
            cbUch.SelectedIndex = 0;
            cbRole.SelectedIndex = 0;
            cbPol.SelectedIndex = 0;
        }

        private void tbNumberKv_KeyPress(object sender, KeyPressEventArgs e)
        {
            if ((e.KeyChar>='0' && e.KeyChar<='9')|| e.KeyChar == (char)Keys.Back)
            {
                e.Handled = false;
            }
            else
            {
                e.Handled = true;
            }
        }
    }
}