using System;
using System.Globalization;
using System.Threading;
using System.Web.UI.WebControls.WebParts;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Publishing;
using Microsoft.SharePoint.WebPartPages;
using Taloyhtio.CondoUpdate.Common;
using WebPart = System.Web.UI.WebControls.WebParts.WebPart;
using Taloyhtio.WhatsNewWebpart;

namespace CondoUpdate.ResponsiveLayout.ChangeFronPageWebPartsAc
{
    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)
        {
            configureWebParts(url);
        }

        private void configureWebParts(string url)
        {
            try
            {
                SPSecurity.RunWithElevatedPrivileges(() =>
                {
                    using (var site = new SPSite(url))
                    {
                        using (var web = site.RootWeb)
                        {
                            if (web == null)
                            {
                                return;
                            }
                            Thread.CurrentThread.CurrentUICulture = new CultureInfo((int) web.Language);
                            bool condoAllowUnsafeUpdates = web.AllowUnsafeUpdates;
                            web.AllowUnsafeUpdates = true;
                           
                            try
                            {

                                var pweb = PublishingWeb.GetPublishingWeb(web);
                                if (pweb == null || pweb.DefaultPage == null ||
                                    string.IsNullOrEmpty(pweb.DefaultPage.ServerRelativeUrl))
                                {
                                    this.warn("Publishing web of '{0}' is null. It will be ignored", url);
                                    return;
                                }

                                updatWebParts(pweb);
                            }
                            catch (Exception ex)
                            {
                                this.error("Error occured during updating of Condo :\n{0}\n{1}", ex.Message,
                                    ex.StackTrace);
                            }
                            finally
                            {
                                web.AllowUnsafeUpdates = condoAllowUnsafeUpdates;
                            }
                        }
                    }
                });
            }
            catch (Exception ex)
            {
                this.error("Error occured during updating of Condo :\n{0}\n{1}", ex.Message, ex.StackTrace);
            }
        }

        private void updatWebParts(PublishingWeb pweb)
        {
            try
            {
                var file = pweb.DefaultPage;
                if (file == null)
                {
                    this.error("Start page is null. Site won't be updated");
                    return;
                }

                if (file.CheckOutType == SPFile.SPCheckOutType.None)
                {
                    file.CheckOut();
                }
                else
                {
                    file.UndoCheckOut();
                    file.CheckOut();
                }

                SPLimitedWebPartManager webPartManager = null;
                using (webPartManager = file.GetLimitedWebPartManager(PersonalizationScope.Shared))
                {
                    if (webPartManager == null)
                    {
                        this.error("Web part manager is null. Site won't be updated");
                        file.UndoCheckOut();
                        return;
                    }
                   
                    var webParts = webPartManager.WebParts;
                    if (webParts != null)
                    {
                        foreach (WebPart wp in webParts)
                        {
                            //this.info("Check web part '{0}' (zone '{1}', zone index '{2}')", wp.Title, webPartManager.GetZoneID(wp), wp.ZoneIndex);
                            if (wp.Title.ToLower().Equals("omat asiakkaat") && (wp.ZoneIndex != 0 ||
                                !webPartManager.GetZoneID(wp).ToLower().Equals("leftcolumnzone")))
                            {
                                //this.info("1");
                                webPartManager.MoveWebPart(wp, "LeftColumnZone", 0);
                                webPartManager.SaveChanges(wp);
                            }
                            if (wp.Title.ToLower().Equals("omat tehtävät") && (wp.ZoneIndex != 1 ||
                                !webPartManager.GetZoneID(wp).ToLower().Equals("leftcolumnzone")))
                            {
                                //this.info("2");
                                webPartManager.MoveWebPart(wp, "LeftColumnZone", 1);
                                webPartManager.SaveChanges(wp);
                            }
                            if (wp.Title.ToLower().Equals("toimiston sisäiset") && (wp.ZoneIndex != 2 ||
                                !webPartManager.GetZoneID(wp).ToLower().Equals("leftcolumnzone")))
                            {
                                //this.info("3");
                                webPartManager.MoveWebPart(wp, "LeftColumnZone", 2);
                                webPartManager.SaveChanges(wp);
                            }
                            if (wp.Title.ToLower().Equals("asiakastiedotteet") || wp.Title.ToLower().Equals("kirjanpitäjältä asiakkaille"))
                            {
                                //this.info("4");
                                wp.Title = "Kirjanpitäjältä asiakkaille";

                                if (wp.ZoneIndex != 1 || !webPartManager.GetZoneID(wp).ToLower().Equals("rightcolumnzone"))
                                {
                                    webPartManager.MoveWebPart(wp, "RightColumnZone", 1);
                                }
                                webPartManager.SaveChanges(wp);
                            }
                            if (wp.Title.ToLower().Equals("uusimmat päivitykset"))
                            {
                                bool needToSave = false;
                                if (wp.ZoneIndex != 0 || !webPartManager.GetZoneID(wp).ToLower().Equals("rightcolumnzone"))
                                {
                                    //this.info("5");
                                    webPartManager.MoveWebPart(wp, "RightColumnZone", 0);
                                    needToSave = true;
                                }
                                var whatsNew = wp as WhatsNewWebpart;
                                if (whatsNew != null)
                                {
                                    whatsNew.MaxItems = 15;
                                    whatsNew.ShowTime = false;
                                    needToSave = true;
                                }
                                if (needToSave)
                                {
                                    webPartManager.SaveChanges(wp);
                                }
                            }
                            if (wp.Title.ToLower().Equals("työkalut") && (wp.ZoneIndex != 2 ||
                                !webPartManager.GetZoneID(wp).ToLower().Equals("rightcolumnzone")))
                            {
                                //this.info("6");
                                webPartManager.MoveWebPart(wp, "RightColumnZone", 2);
                                webPartManager.SaveChanges(wp);
                            }
                        }
                    }

                    file.Update();
                    file.CheckIn("Updated ac site webparts order");
                    if (file.Item.ParentList.EnableMinorVersions)
                    {
                        file.Publish("Updated ac site webparts order");
                    }
                    if (file.Item.ParentList.EnableModeration)
                    {
                        file.Approve("Updated ac site webparts order");
                    }
                }
            }
            catch (Exception ex)
            {
                this.error("Error occured when update web part on '{0}' site:\n{1}\n{2}", pweb.Web.Url, ex.Message, ex.StackTrace);
                var file = pweb.DefaultPage;
                if (file.CheckOutType != SPFile.SPCheckOutType.None)
                {
                    file.UndoCheckOut();
                }
            }
        }

        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 });
            }
        }
    }
}