//  Copyright (C) 2013, The Duplicati Team

//  http://www.duplicati.com, opensource@duplicati.com
//
//  This library is free software; you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as
//  published by the Free Software Foundation; either version 2.1 of the
//  License, or (at your option) any later version.
//
//  This library 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
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.IO;
using Duplicati.Library.Interface;
using Duplicati.Library.Main.Database;

namespace Duplicati.Library.Main.Operation
{
    internal class CreateBugReportHandler
    {
        /// <summary>
        /// The tag used for logging
        /// </summary>
        private static readonly string LOGTAG = Logging.Log.LogTagFromType<CreateBugReportHandler>();
        private string m_targetpath;
        private readonly Options m_options;
        private readonly CreateLogDatabaseResults m_result;

        public CreateBugReportHandler(string targetpath, Options options, CreateLogDatabaseResults result)
        {
            m_targetpath = targetpath;
            m_options = options;
            m_result = result;
        }

        public void Run()
        {
            var ext = System.IO.Path.GetExtension(m_targetpath);
            var module = m_options.CompressionModule;

            if (ext == "" || string.Compare(ext, 1, module, 0, module.Length, StringComparison.OrdinalIgnoreCase) != 0)
                m_targetpath = m_targetpath + "." + module;

            if (System.IO.File.Exists(m_targetpath))
                throw new UserInformationException(string.Format("Output file already exists, not overwriting: {0}", m_targetpath), "BugReportTargetAlreadyExists");

            if (!System.IO.File.Exists(m_options.Dbpath))
                throw new UserInformationException(string.Format("Database file does not exist: {0}", m_options.Dbpath), "BugReportSourceDatabaseNotFound");

            m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.BugReport_Running);
            m_result.OperationProgressUpdater.UpdateProgress(0);

            Logging.Log.WriteInformationMessage(LOGTAG, "ScrubbingFilenames", "Scrubbing filenames from database, this may take a while, please wait");

            using (var tmp = new Library.Utility.TempFile())
            {
                System.IO.File.Copy(m_options.Dbpath, tmp, true);
                using (var db = new LocalBugReportDatabase(tmp))
                {
                    m_result.SetDatabase(db);
                    db.Fix();
                    if (m_options.AutoVacuum)
                    {
                        db.Vacuum();
                    }
                }

                using (var stream = new System.IO.FileStream(m_targetpath, FileMode.Create, FileAccess.Write, FileShare.Read))
                using (ICompression cm = DynamicLoader.CompressionLoader.GetModule(module, stream, Interface.ArchiveMode.Write, m_options.RawOptions))
                {
                    using (var cs = cm.CreateFile("log-database.sqlite", Duplicati.Library.Interface.CompressionHint.Compressible, DateTime.UtcNow))
                    using (var fs = System.IO.File.Open(tmp, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite))
                        Library.Utility.Utility.CopyStream(fs, cs);

                    using (var cs = new System.IO.StreamWriter(cm.CreateFile("system-info.txt", Duplicati.Library.Interface.CompressionHint.Compressible, DateTime.UtcNow)))
                        foreach (var line in SystemInfoHandler.GetSystemInfo())
                            cs.WriteLine(line);
                }

                m_result.TargetPath = m_targetpath;
            }
        }
    }
}