using System;
using System.Collections.Generic;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using GeneralApi.Core.Repositories;
using Microsoft.Practices.ServiceLocation;
using System.Drawing;
using System.Linq;
using System.Web.UI.WebControls;
using Microsoft.SharePoint.Utilities;
using NHibernate.Validator.Engine;
using Taloyhtio.GeneralApi.Common.Extensions;
using Taloyhtio.GeneralApi.Core.Entities;

namespace Taloyhtio.GeneralApi.MOSS
{
    public partial class RelateCondo : LayoutsPageBase
    {
        private const int NO_CONDO_INDEX = -1;
        public const string NO_SELECTION = "[No selection]";

        protected void Page_Load(object sender, EventArgs e)
        {
            var currentWeb = SPContext.Current.Web;
            if (!currentWeb.DoesUserHavePermissions(SPBasePermissions.ManageWeb))
            {
                SPUtility.TransferToErrorPage("You don't have necessary permissions to perform this operation",
                    currentWeb.Title, currentWeb.Url);
            }
            if (!this.IsPostBack)
            {
                var condoRepository = ServiceLocator.Current.GetInstance<ICondoRepository>();

                var allCondos = condoRepository.GetAll();
                var viewModelCondos = new List<object>();
                if (!allCondos.IsNullOrEmpty())
                {
                    viewModelCondos =
                        allCondos.Select(
                            c =>
                                (object)new { Id = c.Id, OfficialName = c.Deactivated ? string.Format("{0} (deactivated)", c.OfficialName) : c.OfficialName }).ToList();
                }
                viewModelCondos.Insert(0, new { Id = NO_CONDO_INDEX, OfficialName = NO_SELECTION });
                this.ddlCondos.DataSource = viewModelCondos;
                this.ddlCondos.DataBind();

                var currentCondo = allCondos.FirstOrDefault(c => c.WebId == SPContext.Current.Web.ID);
                if (currentCondo != null)
                {
                    this.ddlCondos.SelectedValue = currentCondo.Id.ToString();

                    this.lblExistingCondo.Text = currentCondo.OfficialName;
                    this.pnlAlreadyRelated.Visible = true;
                }
            }
        }

        protected void SaveButtonClick(object sender, EventArgs e)
        {
            this.pnlAlreadyRelated.Visible = false;

            var condoRepository = ServiceLocator.Current.GetInstance<ICondoRepository>();

            // unrelate old condos first
            var oldCondos = condoRepository.GetByWebId(SPContext.Current.Web.ID);
            if (!oldCondos.IsNullOrEmpty())
            {
                foreach (Condo oldCondo in oldCondos)
                {
                    oldCondo.WebAppId = null;
                    oldCondo.SiteId = null;
                    oldCondo.WebId = null;
                }
            }

            if (this.ddlCondos.SelectedValue == NO_CONDO_INDEX.ToString())
            {
                this.showText("Current site is not assoiated with any Condo from master database now", Color.Green);
                return;
            }

            // relate site with seleced condo
            int id = int.Parse(this.ddlCondos.SelectedValue);
            var condo = condoRepository.GetById(id);
            if (condo == null)
            {
                this.showText(string.Format("Condo with id = '{0}' not found", id), Color.Red);
                return;
            }
            condo.WebAppId = SPContext.Current.Site.WebApplication.Id;
            condo.SiteId = SPContext.Current.Site.ID;
            condo.WebId = SPContext.Current.Web.ID;

            var validator = ServiceLocator.Current.GetInstance<ValidatorEngine>();
            var errors = validator.Validate(condo);
            if (!errors.IsNullOrEmpty())
            {
                this.showText(string.Join("<br />", errors.Select(c => c.ToString()).ToArray()), Color.Red);
                return;
            }

            condo.LastUpdated = DateTime.Now;
            condoRepository.Save(condo);
            this.showText(string.Format("Condo '{0}' was sucessfully associated with site '{1}'",
                this.ddlCondos.SelectedItem.Text, SPContext.Current.Web.Url), Color.Green);
        }

        private void showText(string text, Color c)
        {
            this.lblStatus.Text = text;
            this.lblStatus.ForeColor = c;
        }

        protected void CancelButtonClick(object sender, EventArgs e)
        {
            SPUtility.Redirect(SPContext.Current.Web.Url, SPRedirectFlags.Default, Context);
        }
    }
}