using System;
using System.Linq;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Navigation;
using Microsoft.SharePoint.Publishing;
using Taloyhtio.CondoUpdate.Common;
using Microsoft.SharePoint.Publishing.Navigation;

namespace CondoUpdate.ResponsiveLayout.ChangeHomeLinkInGlobalNavigationAc
{
    public class UpdaterImpl:ICondoUpdater
    {
        private const string PageTitle = "Etusivu";
        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)
        {
            
            this.changeGlobalNavigation(url, PageTitle);
        }

        private void changeGlobalNavigation(string url, string pageTitle)
        {
            if (string.IsNullOrEmpty(url)) return;
            try
            {
                SPSecurity.RunWithElevatedPrivileges(() =>
                {
                    using (var site = new SPSite(url))
                    {
                        using (var web = site.RootWeb)
                        {
                            if (!web.Exists)
                            {
                                return;
                            }
                            bool allowUnsafeUpdatesPmc = web.AllowUnsafeUpdates;
                            web.AllowUnsafeUpdates = true;
                            var pweb = PublishingWeb.GetPublishingWeb(web);

//                            var defaultPage = pweb.DefaultPage;
//                            if (defaultPage != null)
//                            {
//                                var page = pweb.GetPublishingPages().FirstOrDefault(p => p.Url.ToLower().EndsWith(defaultPage.Url.ToLower()));
//                                if (page != null)
//                                {
//                                    page.IncludeInGlobalNavigation = true;
//                                }
//                            }

                            var globalNavigation = pweb.Navigation.GlobalNavigationNodes;
                            var nodePage = globalNavigation.Cast<SPNavigationNode>().FirstOrDefault(n => (n.Title.ToLower().EndsWith(" oy") || n.Title.ToLower().EndsWith(" ky")) && n.IsVisible &&
                                (n.Properties != null && n.Properties["NodeType"] != null && n.Properties["NodeType"] is string &&
                                    (n.Properties["NodeType"] as string == "AuthoredLink" || (n.Properties["NodeType"] as string).StartsWith("AuthoredLink"))));

                            if (nodePage != null)
                            {
                                nodePage.Properties["NodeType"] = "Heading";
                                nodePage.Update();

                                pweb = PublishingWeb.GetPublishingWeb(web);
                                globalNavigation = pweb.Navigation.GlobalNavigationNodes;
                                nodePage = globalNavigation.Cast<SPNavigationNode>().FirstOrDefault(n => (n.Title.ToLower().EndsWith(" oy") || n.Title.ToLower().EndsWith(" ky")) && n.IsVisible);
                                if (nodePage != null)
                                {
                                    nodePage.Delete();
                                }
                                else
                                {
                                    this.warn("'{0}' Pmc name navigation item is not found", pageTitle);
                                }
                            }
                            else
                            {
                                this.warn("'{0}' Pmc name navigation item is not found", pageTitle);
                            }

                            pweb = PublishingWeb.GetPublishingWeb(web);
                            globalNavigation = pweb.Navigation.GlobalNavigationNodes;
                            var etusivuNode = globalNavigation.Cast<SPNavigationNode>().FirstOrDefault(p => p.Title.Equals(pageTitle) && p.IsVisible == true);
                            if (etusivuNode == null)
                            {
                                var node = SPNavigationSiteMapNode.CreateSPNavigationNode(pageTitle, web.Url, NodeTypes.Heading, globalNavigation);
                                var dt = DateTime.Now;
                                if (node != null)
                                {
                                    node.Properties["CreatedDate"] = dt;
                                    node.Properties["LastModifiedDate"] = dt;
                                    node.Properties["Description"] = "";
                                    node.Properties["Target"] = "";
                                    node.Properties["Taloyhtio"] = "1";
                                    node.Update();
                                    node.MoveToFirst(globalNavigation);
                                }
                            }
                            else
                            {
                                this.warn("'{0}' navigation node already exists", pageTitle);
                                //etusivuNode.Delete();
                            }
                            web.AllowUnsafeUpdates = allowUnsafeUpdatesPmc;
                        }
                    }
                });
            }
            catch (Exception x)
            {
                this.error("Error occured when rename front page on {0} error: {1} {2}", url, x.Message,
                    x.StackTrace);
            }
        }

        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 });
            }
        }
    }
}