using Step.NC;
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;

namespace Step.UI
{
    public partial class PasswordForm : Form
    {
        private NcAdapter Nc;
        private String Matricola;
        private DateTime Licenza;
        const long BASETIME = 730119; // 1/1/2000

        public PasswordForm()
        {
            InitializeComponent();
        }

        public void setNcData(String matr, NcAdapter Nch)
        {
            this.Matricola = matr;
            this.Text = "Password - " + this.Matricola;
            this.Nc = Nch;
        }

        private void Cancel_Pwd_Button_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;
            this.Close();
        }

        private void OK_Pwd_Button_Click(object sender, EventArgs e)
        {
            checkPSW(TextBox_Password.Text);
        }

        private void PasswordForm_Load(object sender, EventArgs e)
        {
            TextBox_Password.Text = "";
            ErrorProvider1.Clear();
            this.ActiveControl = TextBox_Password;
        }

        private void TextBox_Password_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                checkPSW(TextBox_Password.Text);
            }
        }

        private void checkPSW(String psw)
        {
            bool bValid = false;

            //Password storica. Serve per abilitare funzionalità particolari
            if (psw == "cmsserviceonly")
                bValid = true;

            else if (Utils.CandiesController.LincensePasswordDecode(psw, out string MatricolaString, out int MatricolaNumerica, out int Command, out long Parameter))

                //Controllo la matricola
                if (this.Matricola != MatricolaString) 
                    bValid = false;
                else
                {
                    switch (Command)
                    {
                        //password del service
                        case 1: bValid = true;break;

                        //SET Licenza Temporanea
                        case 2:
                            if(Nc != null)
                            {
                                Licenza = new DateTime(Parameter * TimeSpan.TicksPerDay);
                                Nc.WriteCandy(Licenza, MatricolaNumerica);
                                bValid = false;
                            }
                            break;

                        //SET Licenza Illimitata
                        case 3:
                            if (Nc != null)
                            {
                                Licenza = new DateTime(0);
                                Nc.WriteCandy(Licenza, MatricolaNumerica);
                                bValid = false;
                            }
                            break;

                    }
                    bValid = false;
                }                       
            else
                bValid = false;

            if (!bValid)
            {
                long nLic = Licenza.Ticks / TimeSpan.TicksPerDay;
                string szError;

                if (nLic == BASETIME)
                    szError = "Error #H-OO";
                else
                    szError = "Error #H-" + nLic.ToString();
                ErrorProvider1.SetError(TextBox_Password, "INVALID PASSWORD" + Environment.NewLine + szError);
            }
            else
            {
                this.DialogResult = DialogResult.OK;
                this.Close();
            }
        }

    }
}