// --------------------------------------------------------------------------------------------------------------------

// <summary>

//   The admin pages referrers.

// </summary>

// --------------------------------------------------------------------------------------------------------------------



namespace Admin.Tracking

{

    using System;

    using System.Collections.Generic;

    using System.Data;

    using System.Linq;

    using System.Web.UI.WebControls;

    using System.Web.Services;

    using System.Threading;

    using App_Code;

    using BlogEngine.Core;

    using BlogEngine.Core.Json;



    using Resources;



    using Page = System.Web.UI.Page;



    /// <summary>

    /// The admin pages referrers.

    /// </summary>

    public partial class Referrers : Page

    {

        #region Methods



        /// <summary>

        /// Raises the <see cref="E:System.Web.UI.Control.Init"/> event to initialize the page.

        /// </summary>

        /// <param name="e">An <see cref="T:System.EventArgs"/> that contains the event data.</param>

        protected override void OnInit(EventArgs e)

        {

            WebUtils.CheckRightsForAdminSettingsPage(false);



            infoPanel.Visible = false;

            if (BlogSettings.Instance.EnableReferrerTracking)

            {

                this.BindDays();

                this.BindReferrers();

            }

            else

            {

                this.ddlDays.Enabled = false;

                infoPanel.InnerText = "Referrers disabled. If you want to enable referrer tracking open settings from the link in the top right corner of the page.";

                infoPanel.Visible = true;

                referrersPanel.Visible = false;

                possibleSmapPanel.Visible = false;

            }



            this.txtNumberOfDays.Text = BlogSettings.Instance.NumberOfReferrerDays.ToString();

            this.cbEnableReferrers.Checked = BlogSettings.Instance.EnableReferrerTracking;



            this.ddlDays.SelectedIndexChanged += this.DdlDaysSelectedIndexChanged;

            this.Page.Title = labels.referrers;



            base.OnInit(e);

        }



        /// <summary>

        /// The bind days.

        /// </summary>

        private void BindDays()

        {

            var sortedDates = new List<DateTime>(Referrer.ReferrersByDay.Keys);



            sortedDates.Sort((firstPair, nextPair) => firstPair.CompareTo(nextPair) * -1);



            this.ddlDays.DataSource = sortedDates;

            this.ddlDays.DataBind();

            foreach (var item in

                this.ddlDays.Items.Cast<ListItem>().Where(item => item.Text == DateTime.Today.ToShortDateString()))

            {

                item.Selected = true;

            }

        }



        /// <summary>

        /// The bind referrers.

        /// </summary>

        private void BindReferrers()

        {

            if (!(this.ddlDays.SelectedIndex >= 0 & Referrer.Referrers.Count > 0))

            {

                infoPanel.InnerText = "There are no referrers.";

                infoPanel.Visible = true;

                referrersPanel.Visible = false;

                possibleSmapPanel.Visible = false;

                return;

            }



            var referrers = Referrer.ReferrersByDay[DateTime.Parse(this.ddlDays.SelectedItem.Text)];

            if (referrers == null)

            {

                return;

            }



            var table = new DataTable();

            table.Columns.Add("url", typeof(string));

            table.Columns.Add("shortUrl", typeof(string));

            table.Columns.Add("target", typeof(string));

            table.Columns.Add("shortTarget", typeof(string));

            table.Columns.Add("hits", typeof(int));



            var spamTable = table.Clone();



            foreach (var refer in referrers)

            {

                DataRow tableRow;

                if (refer.PossibleSpam)

                {

                    tableRow = spamTable.NewRow();

                    this.PopulateRow(tableRow, refer);

                    spamTable.Rows.Add(tableRow);

                }

                else

                {

                    tableRow = table.NewRow();

                    this.PopulateRow(tableRow, refer);

                    table.Rows.Add(tableRow);

                }

            }



            BindTable(table, this.grid);

            BindTable(spamTable, this.spamGrid);

        }



        /// <summary>

        /// Binds the table.

        /// </summary>

        /// <param name="table">

        /// The table.

        /// </param>

        /// <param name="gridview">

        /// The gridview.

        /// </param>

        private static void BindTable(DataTable table, GridView gridview)

        {

            var total = table.Compute("sum(hits)", null).ToString();



            var view = new DataView(table) { Sort = "hits desc" };



            gridview.DataSource = view;

            gridview.DataBind();



            if (gridview.Rows.Count > 0)

            {

                gridview.FooterRow.Cells[0].Text = labels.Referrers_BindTable_Total;

                gridview.FooterRow.Cells[gridview.FooterRow.Cells.Count - 1].Text = total;

            }

            else

            {

            }



            PaintRows(gridview, 3);

        }



        /// <summary>

        /// Makes the short URL.

        /// </summary>

        /// <param name="url">The text to shorten.</param>

        /// <returns>The shortened text.</returns>

        private string MakeShortUrl(string url)

        {

            return url.Length > 150

                       ? string.Format("{0}...", url.Substring(0, 150))

                       : this.Server.HtmlEncode(url.Replace("http://", string.Empty).Replace("www.", string.Empty));

        }



        /// <summary>

        /// Paints the background color of the alternate rows

        ///     in the gridview.

        /// </summary>

        /// <param name="gridview">

        /// The gridview.

        /// </param>

        /// <param name="alternateRows">

        /// The alternate Rows.

        /// </param>

        private static void PaintRows(GridView gridview, int alternateRows)

        {

            if (gridview.Rows.Count == 0)

            {

                return;

            }



            var count = 0;

            for (var i = 0; i < gridview.Controls[0].Controls.Count - 1; i++)

            {

                if (count > alternateRows)

                {

                    ((WebControl)gridview.Controls[0].Controls[i]).CssClass = "alt";

                }



                count++;



                if (count == alternateRows + alternateRows + 1)

                {

                    count = 1;

                }

            }

        }



        /// <summary>

        /// Populates the row.

        /// </summary>

        /// <param name="tableRow">

        /// The table row.

        /// </param>

        /// <param name="refer">

        /// The refer.

        /// </param>

        private void PopulateRow(DataRow tableRow, Referrer refer)

        {

            tableRow["url"] = this.Server.HtmlEncode(refer.ReferrerUrl.ToString());

            tableRow["shortUrl"] = this.MakeShortUrl(refer.ReferrerUrl.ToString());

            tableRow["target"] = this.Server.HtmlEncode(refer.Url.ToString());

            tableRow["shortTarget"] = this.MakeShortUrl(refer.Url.ToString());

            tableRow["hits"] = refer.Count;

        }





        [WebMethod]

        public static JsonResponse Save(string enable, string days)

        {

            var response = new JsonResponse { Success = false };



            if (!WebUtils.CheckRightsForAdminSettingsPage(true))

            {

                response.Message = "Not authorized";

                return response;

            }



            try

            {

                BlogSettings.Instance.EnableReferrerTracking = bool.Parse(enable);

                BlogSettings.Instance.NumberOfReferrerDays = int.Parse(days);

                BlogSettings.Instance.Save();

                response.Success = true;

                response.Message = string.Format("Settings saved");

                return response;

            }

            catch (Exception ex)

            {

                Utils.Log(string.Format("admin.Tracking.referrers.Save(): {0}", ex.Message));

                response.Message = string.Format("Could not save settings: {0}", ex.Message);

                return response;

            }

        }



        /// <summary>

        /// Handles the CheckedChanged event of the cbEnableReferrers control.

        /// </summary>

        /// <param name="sender">

        /// The source of the event.

        /// </param>

        /// <param name="e">

        /// The <see cref="System.EventArgs"/> instance containing the event data.

        /// </param>

        private void CbEnableReferrersCheckedChanged(object sender, EventArgs e)

        {

            if (this.cbEnableReferrers.Checked)

            {

                this.BindDays();

                this.BindReferrers();

            }

            else

            {

                this.ddlDays.Enabled = false;

            }



            BlogSettings.Instance.EnableReferrerTracking = this.cbEnableReferrers.Checked;

            BlogSettings.Instance.Save();

        }



        /// <summary>

        /// Handles the SelectedIndexChanged event of the ddlDays control.

        /// </summary>

        /// <param name="sender">

        /// The source of the event.

        /// </param>

        /// <param name="e">

        /// The <see cref="System.EventArgs"/> instance containing the event data.

        /// </param>

        private void DdlDaysSelectedIndexChanged(object sender, EventArgs e)

        {

            this.BindReferrers();

        }



        #endregion

    }

}