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

namespace CondoUpdate.DisableReputationOnDiscussionBoard
{
    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(SPUrlUtility.CombineUrl(url, "hallitukselle"));
            }
            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))
            {
                using (var web = site.OpenWeb())
                {
                    if (!web.Exists || string.Compare(web.Url, url, true) != 0)
                    {
                        return;
                    }
                    var pweb = PublishingWeb.GetPublishingWeb(web);
                    Thread.CurrentThread.CurrentUICulture = new CultureInfo((int)web.Language);

                    var list = web.Lists.Cast<SPList>().FirstOrDefault(l => l.DefaultViewUrl.ToLower().Contains("/keskustelupalsta/"));
                    if (list == null)
                    {
                        this.error("Discussion board doclib not found");
                        return;
                    }

                    var type = typeof(RatingsSettingsPage15).Assembly.GetType("Microsoft.SharePoint.Portal.ReputationHelper");
                    try
                    {
                        var file = pweb.DefaultPage;
                        if (file == null)
                        {
                            this.error("Start page is null. Site won't be updated");
                            return;
                        }

                        if (file.CheckOutStatus == SPFile.SPCheckOutStatus.None)
                        {
                            file.CheckOut();
                        }
                        else
                        {
                            // if file was checked out by another user, need undo check out and check in again in order to avoid errors
                            // when add web part
                            file.UndoCheckOut();
                            file.CheckOut();
                        }

                        ReflectionHelper.CallStaticMethod(type, "DisableReputation", list);
                        list.Update();

                        file.CheckIn("Reputation was disabled for Discussion board list");
                        file.Update();
                        file.Publish("Reputation was disabled for Discussion board list");
                    }
                    catch (Exception x)
                    {
                        this.error("Error occured:\n{0}\n{1}", x.Message, x.StackTrace);
                        var file = pweb.DefaultPage;
                        if (file.CheckOutStatus != SPFile.SPCheckOutStatus.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 });
            }
        }
    }
}