using Microsoft.SharePoint;
using Microsoft.SharePoint.Publishing;
using Microsoft.SharePoint.Utilities;
using System;
using System.Globalization;
using System.Net;
using System.Threading;
using Taloyhtio.CondoUpdate.Common;

namespace CondoUpdate.ResponsiveLayout.UpdateAcFrontPageNewsWebParts
{
    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 company '{0}':\n{1}\n{2}", url, x.Message, x.StackTrace);
            }
        }

        private void updateImpl(string url)
        {
            SPSecurity.RunWithElevatedPrivileges(() =>
            {
                using (var site = new SPSite(url))
                {
                    using (var acWeb = site.RootWeb)
                    {
                        if (!acWeb.Exists)
                        {
                            this.warn("Site '{0}' doesn't exist. It will be ignored", url);
                            return;
                        }
                        Thread.CurrentThread.CurrentUICulture = new CultureInfo((int)acWeb.Language);

                        if (!PublishingWeb.IsPublishingWeb(acWeb))
                        {
                            this.warn("Site '{0}' is not publishing web. It will be ignored", url);
                            return;
                        }

                        string handlerUrl = SPUrlUtility.CombineUrl(acWeb.Url, "_layouts/15/Taloyhtio/CompanyAutomation/AcWebPartUpdateHandler.ashx");
                        var request = (HttpWebRequest)WebRequest.Create(handlerUrl);
                        request.Credentials = CredentialCache.DefaultNetworkCredentials;
                        var response = (HttpWebResponse)request.GetResponse();
                        if (response.StatusCode != HttpStatusCode.OK)
                        {
                            this.error("Error occured during webparts update");
                        }
                    }
                }
            });
        }

        #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
    }
}