/* Copyright (c) Cloud Software Group, Inc. 
 * 
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 * with or without modification, are permitted provided 
 * that the following conditions are met: 
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 *     following disclaimer. 
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 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
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 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
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 */

using System;
using System.Windows.Forms;
using XenAdmin.Core;
using XenCenterLib;


namespace XenAdmin.Dialogs.RestoreSession
{
    public partial class ChangeMainPasswordDialog : XenDialogBase
    {
        private readonly byte[] _currentPasswordHash;

        public ChangeMainPasswordDialog(byte[] currentPasswordHash)
        {
            InitializeComponent();
            _currentPasswordHash = currentPasswordHash;
            currentPasswordError.Visible = false;
            newPasswordError.Visible = false;
        }

        public byte[] NewPassword { get; private set; }

        private void currentTextBox_TextChanged(object sender, EventArgs e)
        {
            currentPasswordError.Visible = false;
        }

        private void mainTextBox_TextChanged(object sender, EventArgs e)
        {
            newPasswordError.Visible = false;
        }

        private void reEnterMainTextBox_TextChanged(object sender, EventArgs e)
        {
            newPasswordError.Visible = false;
        }

        private void okButton_Click(object sender, EventArgs e)
        {
            var currentPasswordCorrect = !string.IsNullOrEmpty(currentTextBox.Text) &&
                                     Helpers.ArrayElementsEqual(EncryptionUtils.ComputeHash(currentTextBox.Text), _currentPasswordHash);

            if (currentPasswordCorrect && !string.IsNullOrEmpty(mainTextBox.Text) &&
                mainTextBox.Text == reEnterMainTextBox.Text)
            {
                NewPassword = EncryptionUtils.ComputeHash(mainTextBox.Text);
                DialogResult = DialogResult.OK;
                return;
            }

            if (!currentPasswordCorrect)
                currentPasswordError.ShowError(Messages.PASSWORD_INCORRECT);
            else if (mainTextBox.Text != reEnterMainTextBox.Text)
                newPasswordError.ShowError(Messages.PASSWORDS_DONT_MATCH);
            else
                newPasswordError.ShowError(Messages.PASSWORDS_EMPTY);

            currentTextBox.Focus();
            currentTextBox.SelectAll();
        }
    }
}