using System.IO;
using Microsoft.SharePoint;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.SharePoint.Utilities;
using Taloyhtio.CondoUpdate.Common;

namespace CondoUpdate.ResponsiveLayout.ReactivateControlPanel
{
    public class UpdaterImpl : ICondoUpdater
    {
        public event EventHandler<LogEventArgs> OnNotify;

        public void Update(object args)
        {
            string url = args as string;
            if (string.IsNullOrEmpty(url))
            {
                this.warn("Url is empty");
                return;
            }

            try
            {
                this.updateImpl(url);
            }
            catch (Exception x)
            {
                this.error("Error occured during updating of Condo '{0}':\n{1}\n{2}", url, x.Message, x.StackTrace);
            }
        }

        private void updateImpl(string url)
        {
            using (var site = new SPSite(url))
            {
                var web = site.RootWeb;
                Thread.CurrentThread.CurrentUICulture = new CultureInfo((int)web.Language);

                var file = web.GetFile(SPUrlUtility.CombineUrl(web.ServerRelativeUrl, "/_catalogs/masterpage/TaloyhtioSimpleLayout.aspx"));

                if (!file.Exists)
                {
                    this.warn("File '/_catalogs/masterpage/TaloyhtioSimpleLayout.aspx' not found");
                    return;
                }

                if (!File.Exists(SPUtility.GetCurrentGenericSetupPath("Template/Features/ControlPanel_Taloyhtio.ControlPanel.Layouts/Taloyhtio.ControlPanel.Layouts/TaloyhtioSimpleLayout.aspx")))
                {
                    this.warn("File 'Template/Features/ControlPanel_Taloyhtio.ControlPanel.Layouts/Taloyhtio.ControlPanel.Layouts/TaloyhtioSimpleLayout.aspx' not found");
                    return;
                }

                if (file.CheckOutStatus != SPFile.SPCheckOutStatus.None)
                {
                    file.UndoCheckOut();
                }

                file.CheckOut();

                var folder = file.ParentFolder;
                using (var fs = File.OpenRead(SPUtility.GetCurrentGenericSetupPath("Template/Features/ControlPanel_Taloyhtio.ControlPanel.Layouts/Taloyhtio.ControlPanel.Layouts/TaloyhtioSimpleLayout.aspx")))
                {
                    folder.Files.Add(file.Name, fs, true);
                }

                file.CheckIn("Responsive layout");

                if (file.Item.ParentList.EnableMinorVersions)
                {
                    file.Publish("Responsive layout");
                }

                if (file.Item.ParentList.EnableModeration)
                {
                    file.Approve("Responsive layout");
                }
            }
        }

        #region notifier
        private void info(string msg, params object[] args)
        {
            this.notify(LogLevel.Info, msg, args);
        }

        private void warn(string msg, params object[] args)
        {
            this.notify(LogLevel.Warn, msg, args);
        }

        private void error(string msg, params object[] args)
        {
            this.notify(LogLevel.Error, msg, args);
        }

        private void notify(LogLevel level, string msg, params object[] args)
        {
            this.notify(level, string.Format(msg, args));
        }

        private void notify(LogLevel level, string msg)
        {
            if (this.OnNotify != null)
            {
                this.OnNotify(this, new LogEventArgs { LogLevel = level, Message = msg });
            }
        }
        #endregion
    }
}