//
//  Author:
//    Natalia Portillo claunia@claunia.com
//
//  Copyright (c) 2017, © Claunia.com
//
//  All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in
//       the documentation and/or other materials provided with the distribution.
//     * Neither the name of the [ORGANIZATION] nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
//  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
//  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
//  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
//  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
//  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
//  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
//  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//

using System;
using System.IO;
using System.Threading;
using apprepodbmgr.Core;
using Eto.Forms;
using Eto.Serialization.Xaml;

namespace apprepodbmgr.Eto
{
    public class dlgSettings : Dialog
    {
        string oldUnarPath;

        public dlgSettings()
        {
            XamlReader.Load(this);
            txtTmp.Text        = Settings.Current.TemporaryFolder;
            txtUnar.Text       = Settings.Current.UnArchiverPath;
            txtDatabase.Text   = Settings.Current.DatabasePath;
            txtRepository.Text = Settings.Current.RepositoryPath;

            if(!string.IsNullOrWhiteSpace(txtUnar.Text)) CheckUnar();

            cmbCompAlg = new EnumDropDown<AlgoEnum>();
            StackLayoutForAlgoEnum.Items.Add(new StackLayoutItem(cmbCompAlg, HorizontalAlignment.Stretch, true));
            cmbCompAlg.SelectedValue = Settings.Current.CompressionAlgorithm;

            spClamdPort.Value    = 3310;
            chkAntivirus.Checked = Settings.Current.UseAntivirus;
            frmClamd.Visible     = chkAntivirus.Checked.Value;
            if(Settings.Current.UseAntivirus && Settings.Current.UseClamd)
            {
                chkClamd.Checked        = Settings.Current.UseClamd;
                txtClamdHost.Text       = Settings.Current.ClamdHost;
                spClamdPort.Value       = Settings.Current.ClamdPort;
                chkClamdIsLocal.Checked = Settings.Current.ClamdIsLocal;
            }

            if(!Settings.Current.UseAntivirus || !Settings.Current.UseVirusTotal) return;

            chkVirusTotal.Checked = true;
            chkVirusTotal.Enabled = true;
            txtVirusTotal.Enabled = true;
            txtVirusTotal.Text    = Settings.Current.VirusTotalKey;
            btnVirusTotal.Enabled = true;
        }

        protected void OnBtnCancelClicked(object sender, EventArgs e)
        {
            Close();
        }

        protected void OnBtnApplyClicked(object sender, EventArgs e)
        {
            // TODO: Check sanity
            Settings.Current.TemporaryFolder      = txtTmp.Text;
            Settings.Current.UnArchiverPath       = txtUnar.Text;
            Settings.Current.DatabasePath         = txtDatabase.Text;
            Settings.Current.RepositoryPath       = txtRepository.Text;
            Settings.Current.CompressionAlgorithm = cmbCompAlg.SelectedValue;
            if(!chkClamd.Checked.Value || !chkAntivirus.Checked.Value)
            {
                Settings.Current.UseClamd     = false;
                Settings.Current.ClamdHost    = null;
                Settings.Current.ClamdPort    = 3310;
                Settings.Current.ClamdIsLocal = false;
            }

            if(chkVirusTotal.Checked.Value && chkAntivirus.Checked.Value)
            {
                Settings.Current.UseVirusTotal = true;
                Settings.Current.VirusTotalKey = txtVirusTotal.Text;
                Workers.InitVirusTotal(Settings.Current.VirusTotalKey);
            }
            else
            {
                Settings.Current.UseVirusTotal = false;
                Settings.Current.VirusTotalKey = null;
            }

            Settings.SaveSettings();
            Workers.CloseDB();
            Workers.InitDB();
            Context.ClamdVersion = null;
            Workers.InitClamd();
            Context.CheckUnar();
            Close();
        }

        protected void OnBtnUnarClicked(object sender, EventArgs e)
        {
            OpenFileDialog dlgFile = new OpenFileDialog {Title = "Choose UnArchiver executable", MultiSelect = false};
            if(!string.IsNullOrWhiteSpace(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles)))
                dlgFile.Directory = new Uri(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles));

            if(dlgFile.ShowDialog(this) != DialogResult.Ok) return;

            txtUnar.Text           = dlgFile.FileName;
            lblUnarVersion.Visible = false;
            CheckUnar();
        }

        protected void OnBtnTmpClicked(object sender, EventArgs e)
        {
            SelectFolderDialog dlgFolder      =
                new SelectFolderDialog {Title = "Choose temporary folder", Directory = Path.GetTempPath()};

            if(dlgFolder.ShowDialog(this) == DialogResult.Ok) txtTmp.Text = dlgFolder.Directory;
        }

        protected void OnBtnRepositoryClicked(object sender, EventArgs e)
        {
            SelectFolderDialog dlgFolder      =
                new SelectFolderDialog {Title = "Choose repository folder", Directory = Path.GetTempPath()};

            if(dlgFolder.ShowDialog(this) == DialogResult.Ok) txtRepository.Text = dlgFolder.Directory;
        }

        protected void OnBtnDatabaseClicked(object sender, EventArgs e)
        {
            SaveFileDialog dlgFile = new SaveFileDialog
            {
                Title           = "Choose database to open/create",
                Directory       = new Uri(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)),
                CheckFileExists = false,
                FileName        = "apprepodbmgr.db"
            };

            if(dlgFile.ShowDialog(this) != DialogResult.Ok) return;

            if(File.Exists(dlgFile.FileName))
            {
                DbCore dbCore = new SQLite();
                bool   notDb  = false;

                try { notDb   |= !dbCore.OpenDb(dlgFile.FileName, null, null, null); }
                catch { notDb =  true; }

                if(notDb)
                {
                    MessageBox.Show("Cannot open specified file as a database, please choose another.",
                                    MessageBoxType.Error);
                    return;
                }

                dbCore.CloseDb();
            }
            else
            {
                DbCore dbCore = new SQLite();
                bool   notDb  = false;

                try { notDb   |= !dbCore.CreateDb(dlgFile.FileName, null, null, null); }
                catch { notDb =  true; }

                if(notDb)
                {
                    MessageBox.Show("Cannot create a database in the specified file as a database.",
                                    MessageBoxType.Error);
                    return;
                }

                dbCore.CloseDb();
            }

            txtDatabase.Text = dlgFile.FileName;
        }

        void CheckUnar()
        {
            Workers.FinishedWithText += CheckUnarFinished;
            Workers.Failed           += CheckUnarFailed;

            oldUnarPath                     = Settings.Current.UnArchiverPath;
            Settings.Current.UnArchiverPath = txtUnar.Text;
            Thread thdCheckUnar             = new Thread(Workers.CheckUnar);
            thdCheckUnar.Start();
        }

        void CheckUnarFinished(string text)
        {
            Application.Instance.Invoke(delegate
            {
                Workers.FinishedWithText -= CheckUnarFinished;
                Workers.Failed           -= CheckUnarFailed;

                lblUnarVersion.Text             = text;
                lblUnarVersion.Visible          = true;
                Settings.Current.UnArchiverPath = oldUnarPath;
            });
        }

        void CheckUnarFailed(string text)
        {
            Application.Instance.Invoke(delegate
            {
                Workers.FinishedWithText -= CheckUnarFinished;
                Workers.Failed           -= CheckUnarFailed;

                txtUnar.Text                    = string.IsNullOrWhiteSpace(oldUnarPath) ? "" : oldUnarPath;
                Settings.Current.UnArchiverPath = oldUnarPath;
                MessageBox.Show(text, MessageBoxType.Error);
            });
        }

        protected void OnChkAntivirusToggled(object sender, EventArgs e)
        {
            frmClamd.Visible      = chkAntivirus.Checked.Value;
            frmVirusTotal.Visible = chkAntivirus.Checked.Value;
        }

        protected void OnChkClamdToggled(object sender, EventArgs e)
        {
            txtClamdHost.Enabled    = chkClamd.Checked.Value;
            spClamdPort.Enabled     = chkClamd.Checked.Value;
            btnClamdTest.Enabled    = chkClamd.Checked.Value;
            lblClamdVersion.Visible = false;
            chkClamdIsLocal.Enabled = chkClamd.Checked.Value;
        }

        protected void OnBtnClamdTestClicked(object sender, EventArgs e)
        {
            lblClamdVersion.Visible = false;

            if(string.IsNullOrEmpty(txtClamdHost.Text))
            {
                MessageBox.Show("clamd host cannot be empty", MessageBoxType.Error);
                return;
            }

            string oldVersion    = Context.ClamdVersion;
            Context.ClamdVersion = null;

            string oldHost             = Settings.Current.ClamdHost;
            ushort oldPort             = Settings.Current.ClamdPort;
            Settings.Current.ClamdHost = txtClamdHost.Text;
            Settings.Current.ClamdPort = (ushort)spClamdPort.Value;

            Workers.TestClamd();

            Settings.Current.ClamdHost = oldHost;
            Settings.Current.ClamdPort = oldPort;

            if(string.IsNullOrEmpty(Context.ClamdVersion))
            {
                MessageBox.Show("Cannot connect to clamd", MessageBoxType.Error);
                return;
            }

            lblClamdVersion.Text    = Context.ClamdVersion;
            Context.ClamdVersion    = oldVersion;
            lblClamdVersion.Visible = true;
        }

        protected void OnChkVirusTotalToggled(object sender, EventArgs e)
        {
            txtVirusTotal.Enabled = chkVirusTotal.Checked.Value;
            btnVirusTotal.Enabled = chkVirusTotal.Checked.Value;
            lblVirusTotal.Visible = false;
        }

        protected void OnBtnVirusTotalClicked(object sender, EventArgs e)
        {
            Workers.Failed += VirusTotalTestFailed;
            if(!Workers.TestVirusTotal(txtVirusTotal.Text)) return;

            lblVirusTotal.Visible = true;
            lblVirusTotal.Text    = "Working!";
        }

        static void VirusTotalTestFailed(string text)
        {
            MessageBox.Show(text, MessageBoxType.Error);
        }

        #region XAML UI elements
        #pragma warning disable 0649
        TextBox                txtTmp;
        TextBox                txtUnar;
        TextBox                txtDatabase;
        TextBox                txtRepository;
        Label                  lblUnarVersion;
        EnumDropDown<AlgoEnum> cmbCompAlg;
        StackLayout            StackLayoutForAlgoEnum;
        GroupBox               frmClamd;
        CheckBox               chkAntivirus;
        CheckBox               chkClamd;
        TextBox                txtClamdHost;
        NumericUpDown          spClamdPort;
        Button                 btnClamdTest;
        Label                  lblClamdVersion;
        CheckBox               chkClamdIsLocal;
        GroupBox               frmVirusTotal;
        CheckBox               chkVirusTotal;
        TextBox                txtVirusTotal;
        Button                 btnVirusTotal;
        Label                  lblVirusTotal;
        #pragma warning restore 0649
        #endregion XAML UI elements
    }
}