// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename       : PrintHex.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : Verbs.
//
// --[ Description ] ----------------------------------------------------------
//
//     Implements the 'printhex' verb.
//
// --[ License ] --------------------------------------------------------------
//
//     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/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2019 Natalia Portillo
// ****************************************************************************/

using System.CommandLine;
using System.CommandLine.Invocation;
using DiscImageChef.CommonTypes;
using DiscImageChef.CommonTypes.Enums;
using DiscImageChef.CommonTypes.Interfaces;
using DiscImageChef.Console;
using DiscImageChef.Core;

namespace DiscImageChef.Commands.Image
{
    internal class PrintHexCommand : Command
    {
        public PrintHexCommand() : base("printhex", "Prints a sector, in hexadecimal values, to the console.")
        {
            Add(new Option(new[]
                {
                    "--length", "-l"
                }, "How many sectors to print.")
                {
                    Argument = new Argument<ulong>(() => 1), Required = false
                });

            Add(new Option(new[]
                {
                    "--long-sectors", "-r"
                }, "Print sectors with tags included.")
                {
                    Argument = new Argument<bool>(() => false), Required = false
                });

            Add(new Option(new[]
                {
                    "--start", "-s"
                }, "Starting sector.")
                {
                    Argument = new Argument<ulong>(), Required = true
                });

            Add(new Option(new[]
                {
                    "--width", "-w"
                }, "How many bytes to print per line.")
                {
                    Argument = new Argument<ushort>(() => 32), Required = false
                });

            AddArgument(new Argument<string>
            {
                Arity = ArgumentArity.ExactlyOne, Description = "Media image path", Name = "image-path"
            });

            Handler = CommandHandler.Create(GetType().GetMethod(nameof(Invoke)));
        }

        public static int Invoke(bool debug, bool verbose, string imagePath, ulong length, bool longSectors,
                                 ulong startSector, ushort widthBytes)
        {
            MainClass.PrintCopyright();

            if(debug)
                DicConsole.DebugWriteLineEvent += System.Console.Error.WriteLine;

            if(verbose)
                DicConsole.VerboseWriteLineEvent += System.Console.WriteLine;

            Statistics.AddCommand("print-hex");

            DicConsole.DebugWriteLine("PrintHex command", "--debug={0}", debug);
            DicConsole.DebugWriteLine("PrintHex command", "--input={0}", imagePath);
            DicConsole.DebugWriteLine("PrintHex command", "--length={0}", length);
            DicConsole.DebugWriteLine("PrintHex command", "--long-sectors={0}", longSectors);
            DicConsole.DebugWriteLine("PrintHex command", "--start={0}", startSector);
            DicConsole.DebugWriteLine("PrintHex command", "--verbose={0}", verbose);
            DicConsole.DebugWriteLine("PrintHex command", "--WidthBytes={0}", widthBytes);

            var     filtersList = new FiltersList();
            IFilter inputFilter = filtersList.GetFilter(imagePath);

            if(inputFilter == null)
            {
                DicConsole.ErrorWriteLine("Cannot open specified file.");

                return(int)ErrorNumber.CannotOpenFile;
            }

            IMediaImage inputFormat = ImageFormat.Detect(inputFilter);

            if(inputFormat == null)
            {
                DicConsole.ErrorWriteLine("Unable to recognize image format, not verifying");

                return(int)ErrorNumber.UnrecognizedFormat;
            }

            inputFormat.Open(inputFilter);

            for(ulong i = 0; i < length; i++)
            {
                DicConsole.WriteLine("Sector {0}", startSector + i);

                if(inputFormat.Info.ReadableSectorTags == null)
                {
                    DicConsole.
                        WriteLine("Requested sectors with tags, unsupported by underlying image format, printing only user data.");

                    longSectors = false;
                }
                else
                {
                    if(inputFormat.Info.ReadableSectorTags.Count == 0)
                    {
                        DicConsole.
                            WriteLine("Requested sectors with tags, unsupported by underlying image format, printing only user data.");

                        longSectors = false;
                    }
                }

                byte[] sector = longSectors ? inputFormat.ReadSectorLong(startSector + i)
                                    : inputFormat.ReadSector(startSector             + i);

                PrintHex.PrintHexArray(sector, widthBytes);
            }

            return(int)ErrorNumber.NoError;
        }
    }
}