//-----------------------------------------------------------------------
// <copyright file="SimpleData.cs" company="bedug.com">
//     Copyright © 2012 Nils Hammar. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
/*
 * Software to access vehicle information via the OBD-II connector.
 * 
 * Copyright © 2012 Nils Hammar
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Alternative licensing is possible, see the licensing document.
 * 
 * The above text may not be removed or modified.
 */

namespace UserInterface.GUI.OBD.Data
{
    using System;
    using System.Collections.Generic;
    using System.Drawing;
    using System.Globalization;
    using System.IO;
    using System.Threading;
    using System.Windows.Forms;
    using global::SharedObjects;
    using global::SharedObjects.GUI.OBD;
    using global::SharedObjects.Misc;
    using global::SharedObjects.Protocol.OBD;

    /// <summary>
    /// Class for displaying data in a formatted style.
    /// </summary>
    public partial class SimpleData : UserControl, ISimpleData
    {
        /// <summary>
        /// Gets simple data grid view instance.
        /// </summary>
        public DataGridView simpleDataDgv
        {
            get
            {
                return this.simpleDataDgv1;
            }
        }

        /// <summary>
        /// Logger instance.
        /// </summary>
        private ILogging iLogging;

        /// <summary>
        /// Columns in data grid view.
        /// </summary>
        private DataGridViewColumnCollection cols;

        /// <summary>
        /// Initializes a new instance of the <see cref="SimpleData" /> class.
        /// </summary>
        /// <param name="iLogging">Logger instance.</param>
        /// <param name="boxTitle">Title of box.</param>
        public SimpleData(ILogging iLogging, string boxTitle)
        {
            this.iLogging = iLogging;

            this.InitializeComponent();

            this.cols = this.simpleDataDgv1.Columns;
            this.groupBox1.Text = boxTitle;
        }

        /// <summary>
        /// Clear the table with simple data.
        /// </summary>
        public void clearTable()
        {
            this.simpleDataDgv1.Rows.Clear();
        }

        /// <summary>
        /// Add printable controls to the list.
        /// <para>
        /// The table will be broken up to one table per page printed.
        /// </para>
        /// </summary>
        /// <param name="printControls">List with printable controls.</param>
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification = "pagedSimpleData is member of a list and must not be disposed here.")]
        public void addPrintControls(IList<Control> printControls)
        {
            if (printControls != null)
            {
                SimpleData pagedSimpleData = new SimpleData(this.iLogging, string.Empty);
                DataGridView newDgv = pagedSimpleData.simpleDataDgv1;
                int i = 0;
                foreach (DataGridViewRow row in this.simpleDataDgv1.Rows)
                {
                    // 66 lines is a decent number of rows to print on one page.
                    if (i++ > 66)
                    {
                        i = 0;
                        printControls.Add(pagedSimpleData);
                        pagedSimpleData = new SimpleData(this.iLogging, string.Empty);
                        newDgv = pagedSimpleData.simpleDataDgv1;
                    }

                    int n = newDgv.Rows.Add(1);
                    DataGridViewRow dgvr = newDgv.Rows[n];
                    DataGridViewCellCollection dgvcc = dgvr.Cells;

                    pagedSimpleData.Height += dgvr.Height;

                    foreach (DataGridViewCell cell in row.Cells)
                    {
                        dgvcc[cell.ColumnIndex].Value = cell.Value;
                    }
                }

                if (i > 0)
                {
                    printControls.Add(pagedSimpleData);
                }
            }
        }

        /// <summary>
        /// Add data to the table including unit text.
        /// </summary>
        /// <param name="presentationData">Presentation data wrapper.</param>
        private delegate void addFunc(IPresentationData presentationData);

        /// <summary>
        /// Add data to the table including unit text.
        /// </summary>
        /// <param name="presentationData">Presentation data wrapper.</param>
        public void add(IPresentationData presentationData)
        {
            if (presentationData != null)
            {
                if (this.simpleDataDgv1.InvokeRequired)
                {
                    try
                    {
                        this.simpleDataDgv1.Invoke(new addFunc(this.add), new object[] { presentationData });
                    }
                    catch (ThreadAbortException)
                    {
                        throw;
                    }
                    catch (System.Reflection.TargetParameterCountException ex)
                    {
                        MessageBox.Show(
                            "Exception: " + ex.Message + "\r\n",
                            "Error",
                            MessageBoxButtons.OK,
                            MessageBoxIcon.Stop);
                    }
                    catch (System.ObjectDisposedException)
                    {
                        // Ignore.
                    }
                }
                else
                {
                    if (this.simpleDataDgv1.ColumnCount > 0)
                    {
                        DataGridViewRowCollection dgvrc = this.simpleDataDgv1.Rows;
                        int n = dgvrc.Add(1);
                        DataGridViewRow dgvr = dgvrc[n];
                        DataGridViewCellCollection dgvcc = dgvr.Cells;

                        dgvcc["col_pid"].Value = "0x" + presentationData.pid.ToString("X2");
                        dgvcc["description"].Value = presentationData.label;
                        dgvcc["unit"].Value = presentationData.unit;
                        dgvcc["data"].Value = presentationData.valueStr;

                        if (presentationData.naFlag)
                        {
                            dgvcc["data"].Style.BackColor = Color.LightGoldenrodYellow;
                        }

                        if (this.Height < 445)
                        {
                            this.Height += dgvr.Height;
                            this.simpleDataDgv1.Height += dgvr.Height;
                        }
                    }
                    else
                    {
                        this.iLogging.appendText("this.simpleDataDgv.ColumnCount=" + this.simpleDataDgv1.ColumnCount + ", this.simpleDataDgv.CanFocus=" + this.simpleDataDgv1.CanFocus + "\r\n");
                    }
                }
            }
            else
            {
                this.iLogging.appendText("presentationData was 'null' - nothing to do.\r\n");
            }
        }

        /// <summary>
        /// Save table data to CSV file for later review.
        /// </summary>
        /// <param name="fileName">Name of file to save data to.</param>
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2202:Do not dispose objects multiple times", Justification = "Reviewed, intentional.")]
        public void saveData(string fileName)
        {
            try
            {
                using (FileStream fileStream = new FileStream(fileName, FileMode.CreateNew))
                {
                    using (StreamWriter streamWriter = new StreamWriter(fileStream, Utils.iso_8859_1))
                    {
                        string csvSep = ";";
                        if (CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator == ".")
                        {
                            csvSep = ",";
                        }

                        streamWriter.WriteLine("\"Name\"" + csvSep + "\"Unit\"" + csvSep + "\"Value\"");
                        DataGridViewRowCollection dgvrc = this.simpleDataDgv1.Rows;
                        foreach (DataGridViewRow dgvr in dgvrc)
                        {
                            DataGridViewCellCollection dgvcc = dgvr.Cells;
                            if (dgvcc["description"].Value != null
                                && dgvcc["unit"].Value != null
                                && dgvcc["data"].Value != null)
                            {
                                string name = (string)dgvcc["description"].Value;
                                streamWriter.Write("\"");
                                streamWriter.Write(name);
                                streamWriter.Write("\"" + csvSep + "\"");

                                string unitValue = (string)dgvcc["unit"].Value;
                                streamWriter.Write(unitValue);
                                streamWriter.Write("\"" + csvSep);

                                string val = dgvcc["data"].Value.ToString();
                                try
                                {
                                    Convert.ToDouble(val); // Test if numeric.
                                    streamWriter.Write(val);
                                }
                                catch
                                {
                                    // Value isn't numeric, print as string.
                                    streamWriter.Write("\"");
                                    streamWriter.Write(val);
                                    streamWriter.Write("\"");
                                }

                                streamWriter.WriteLine();
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(
                    "Could not open file '" + fileName + "'\r\n\r\n" + ex.Message,
                    "Error",
                    MessageBoxButtons.OK,
                    MessageBoxIcon.Hand);
            }
        }

        /// <summary>
        /// Adjust for changed size.
        /// </summary>
        /// <param name="sender">Sending object.</param>
        /// <param name="e">Event data.</param>
        private void simpleDataDgv_SizeChanged(object sender, EventArgs e)
        {
            if (this.simpleDataDgv1 != null)
            {
                Size sz = this.simpleDataDgv1.Size;
                if (sz != null)
                {
                    int width = sz.Width;
                    width -= 159; // Units column, scrollbar etc.
                    int descWidth = (int)(width / 1.3);
                    int valueWidth = width - descWidth; // To cover for rounding error.
                    descWidth = descWidth < 100 ? 100 : descWidth;
                    valueWidth = valueWidth < 100 ? 100 : valueWidth;
                    this.cols["description"].Width = descWidth;
                    this.cols["data"].Width = valueWidth;
                }
            }
        }
    }
}