using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Utilities;
using SPSolutions.SharePoint.Alerts;
using Taloyhtio.CustomAlertHandler.CodeFiles;

namespace FixCondoAlert
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length != 1)
            {
                Console.WriteLine("Usage: FixCondoAlert.exe <condo_url>");
                return;
            }

            string condoUrl = args[0];
            fixList(condoUrl, "/Lists/Ilmoitustaulu");
            fixList(condoUrl + "/asukkaille", "/Documents");
            fixList(condoUrl + "/osakkaille", "/Documents");
            fixList(condoUrl + "/Osakkaille", "/Lists/Osakastiedotteet");
            fixList(condoUrl + "/hallitukselle", "/Documents");
            fixList(condoUrl + "/Hallitukselle", "/Lists/Hallituksen%20tiedotteet");
            fixList(condoUrl + "/Hallitukselle", "/Lists/Kalenteri");
            fixList(condoUrl + "/Hallitukselle", "/Lists/Keskustelupalsta");
        }

        private static void fixList(string webUrl, string listUrl)
        {
            log("Check list '{0}' in web '{1}'", listUrl, webUrl);
            using (var site = new SPSite(webUrl))
            {
                using (var web = site.OpenWeb())
                {
                    SPList list = null;
                    try
                    {
                        string url = SPUrlUtility.CombineUrl(webUrl, listUrl);
                        list = web.GetList(url);
                    }
                    catch
                    {
                    }

                    if (list == null)
                    {
                        log("List can't be found");
                        return;
                    }

                    string msg;
                    bool? alreadyActivated = AlertTemplateConfigurator.HasEnabledFromField(list, out msg);
                    if (alreadyActivated != null && alreadyActivated.Value)
                    {
                        log("Custom alert handler is already activated");
                        return;
                    }

                    // get first alert from list (normally in all lists affected by alert creation tool there is only 1 alert)
                    var alert = getFirstListAlert(web, list);
                    if (alert == null)
                    {
                        log("There are no alerts in the list");
                        return;
                    }

                    // get alert template from this list
                    var alertTemplate = alert.AlertTemplate;
                    if (alertTemplate == null)
                    {
                        log("Alert's alert template is null");
                        return;
                    }

                    if (!isCustom(alertTemplate))
                    {
                        log("Alert template '{0}' is not custom", alertTemplate.DisplayName);
                        return;
                    }

                    // assign alert template
                    list.AlertTemplate = alertTemplate;
                    list.Update();
                    log("List's alert template was set to '{0}'", alertTemplate.DisplayName);

                    if (!AlertTemplateConfigurator.ActivateCustomAlertHandlerOnList(list, true, out msg))
                    {
                        log("There was problem when activating custom alert handler: '{0}'", msg);
                        return;
                    }

                    log("Custom alert handler was successfilly activated");
                }
            }
        }

        private static SPAlert getFirstListAlert(SPWeb web, SPList list)
        {
            var alerts = web.Alerts.Cast<SPAlert>();
            return alerts.FirstOrDefault(a => a.ListID == list.ID);
        }

        // This is copy of Alert template's AlertTemplateManager.IsCustom property implementation
        private static bool isCustom(SPAlertTemplate t)
        {
            return (((t.Properties["Custom"] != null) && (t.Properties["Custom"] is string)) && (((string)t.Properties["Custom"]) == SPAlertTemplateUtil.CustomAlertTemplateIdentifier));
        }

        private static void log(string msg, params object[] args)
        {
            Console.WriteLine(msg, args);
        }
    }
}