using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.SessionState;
using System.Data;
using CodeCafe.Web;

/// <summary>
/// Summary description for clsBasket
/// </summary>

public struct BasketItem
{
  public int ProductId;
  public string Product;
  public int Qty;
  public float Cost;
  public int Term;
}
 

public class clsBasket
{

  public List<BasketItem> Basket = new List<BasketItem>();

  /****************************************************************************************************/
  /// <summary>
  /// Initializes a new instance of the <see cref="clsBasket"/> class.
  /// </summary>
  public clsBasket()
	{
	}

  /****************************************************************************************************/
  /// <summary>
  /// Adds to basket.
  /// </summary>
  /// <param name="ProductId">The product id.</param>
  /// <param name="Product">The product.</param>
  /// <param name="Qty">The qty.</param>
  public void AddToBasket(int ProductId, string Product, int Qty, int Term)
  {
    LoadBasket();
    bool HasItem = false;
    for (int i = 0; i < Basket.Count; i++)
    {
      if (Basket[i].ProductId == ProductId)
      {
        BasketItem update = Basket[i];
        update.Qty = update.Qty + Qty;
        if (Term > update.Term)
          update.Term = Term;

        Basket[i] = update;
        HasItem = true;
        break;
      }
    }

    if (!HasItem)
    {
      clsProductInfo product = new clsProductInfo();
      product.Load(ProductId);
      BasketItem item = new BasketItem();
      item.Qty = Qty;
      item.Product = Product.Replace("*","").Trim();
      item.ProductId = ProductId;
      item.Cost = product.pi_price;
      item.Term = Term;
      Basket.Add(item);
    }

    SaveBasket();
  }

  /****************************************************************************************************/
  /// <summary>
  /// Updated an item in the basket.
  /// </summary>
  /// <param name="ProductId">The product id.</param>
  /// <param name="Qty">The qty.</param>
  /// <param name="Term">The term.</param>
  public void UpdateBasket(int ProductId, int Qty, int Term)
  {
    LoadBasket();
    for (int i = 0; i < Basket.Count; i++)
    {
      if (Basket[i].ProductId == ProductId)
      {
        BasketItem update = Basket[i];
        if (Qty > 0)
        {
          update.Qty = Qty;
          update.Term = Term;
          Basket[i] = update;
        }
        else
          Basket.Remove(update);

        break;
      }
    }
    SaveBasket();
  }

  /****************************************************************************************************/
  /// <summary>
  /// Updated an item in the basket.
  /// </summary>
  /// <param name="ProductId">The product id.</param>
  /// <param name="Qty">The qty.</param>
  public void UpdateBasket(int ProductId, int Qty)
  {
    LoadBasket();
    for (int i = 0; i < Basket.Count; i++)
    {
      if (Basket[i].ProductId == ProductId)
      {
        BasketItem update = Basket[i];
        if (Qty > 0)
        {
          update.Qty = Qty;
          Basket[i] = update;
        }
        else
          Basket.Remove(update);

        break;
      }
    }
    SaveBasket();
  }

  /****************************************************************************************************/
  /// <summary>
  /// Removes an item from the basket.
  /// </summary>
  /// <param name="ProductId">The product id.</param>
  public void RemoveFromBasket(int ProductId)
  {
    LoadBasket();
    for (int i = 0; i < Basket.Count; i++)
    {
      if (Basket[i].ProductId == ProductId)
      {
        Basket.Remove(Basket[i]);
        break;
      }
    }
    SaveBasket();
  }

  /****************************************************************************************************/
  /// <summary>
  /// Deletes the basket.
  /// </summary>
  public void DeleteBasket()
  {
    Basket.Clear();
    SaveBasket();
  }

  /****************************************************************************************************/
  /// <summary>
  /// Saves the basket.
  /// </summary>
  private void SaveBasket()
  {
    if (System.Web.HttpContext.Current.Session["userBasket"] == null)
    {
      System.Web.HttpContext.Current.Session.Add("userBasket", Basket);
    }
    else
      System.Web.HttpContext.Current.Session["userBasket"] = Basket;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Loads the basket.
  /// </summary>
  public void LoadBasket()
  {
    if (System.Web.HttpContext.Current.Session["userBasket"] == null)
    {
      System.Web.HttpContext.Current.Session.Add("userBasket", Basket);
    }
    else
      Basket = (List<BasketItem>)System.Web.HttpContext.Current.Session["userBasket"];
  }

  /****************************************************************************************************/
  /// <summary>
  /// Counts the basket items.
  /// </summary>
  /// <returns></returns>
  public int CountItems()
  {
    int ItemCount = 0;
    LoadBasket();
    foreach (BasketItem item in Basket)
    {
      ItemCount += item.Qty;
    }
    return ItemCount;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Renders the client email.
  /// </summary>
  /// <returns></returns>
  public string RenderClientEmail()
  {
    string result = "";
    LoadBasket();
    float vat = Utils.StrToFloatDef(System.Configuration.ConfigurationManager.AppSettings.Get("VATAmount"), 1.14f);
    bool hasRecurring = false;
    //float total = 0;
    float totalOnceOff = 0;
    float totalRecurring = 0;
    if (Basket.Count > 0)
    {
      result = "<table cellpadding=\"2\" cellspacing=\"0\" width=\"90%\" style=\"font-family: Arial;font-size: 12px;color: rgb(126,133,144);\">";
      result += "<tr><td width=\"55%\"><b>Product</b></td><td width=\"15%\" align=\"center\"><b>Qty</b></td><td width=\"15%\" align=\"right\"><b>Price</b></td><td align=\"right\" width=\"15%\"><b>Total</b></td></tr>";
      foreach (BasketItem item in Basket)
      {
        result += "<tr><td>" + item.Product ;
        if (item.Term > 1)
        {
          result += "<br />For a period of <b>" + item.Term + " months</b>";
          hasRecurring = true;
          totalRecurring += (item.Cost * item.Qty);
        }
        else
          totalOnceOff += (item.Cost * item.Qty);
        result += "</td>";
        result += "<td align=\"center\">" + item.Qty.ToString() + "</td>";
        result += "<td align=\"right\">R " + item.Cost.ToString("N2") + "</td>";
        result += "<td align=\"right\"><b>R " + (item.Cost * item.Qty).ToString("N2") + "</b></td></tr>";
        //total += (item.Cost * item.Qty);
      }
      string OrderPrefix = "";
      if (hasRecurring)
        OrderPrefix = "Once-off ";

      if (totalOnceOff > 0)
      {
        result += "<tr><td colspan=\"3\" style=\"border-top: 1px solid Black;\" align=\"right\">" + OrderPrefix + "Sub Total (Excl. Vat):</td>";
        result += "<td align=\"right\" style=\"border-top: 1px solid Black;\">R " + totalOnceOff.ToString("N2") + "</td></tr>";

        result += "<tr><td colspan=\"3\" align=\"right\">Vat:</td>";
        result += "<td align=\"right\" >R " + ((totalOnceOff * vat) - totalOnceOff).ToString("N2") + "</td></tr>";

        result += "<tr><td colspan=\"3\" style=\"border-top: 1px solid Black;\" align=\"right\"><b>";
        result += OrderPrefix + "Order Total (Incl. Vat):</b></td>";
        result += "<td align=\"right\" style=\"border-top: 1px solid Black;border-bottom: 1px double Black;\"><b>R " + (totalOnceOff * vat).ToString("N2") + "</b></td></tr>";
      }

      if (hasRecurring)
      {
        result += "<tr><td colspan=\"4\" >&nbsp;</td>";
        result += "<tr><td colspan=\"3\" style=\"border-top: 1px solid Black;\" align=\"right\">Monthly Sub Total (Excl. Vat):</td>";
        result += "<td align=\"right\" style=\"border-top: 1px solid Black;\">R " + totalRecurring.ToString("N2") + "</td></tr>";

        result += "<tr><td colspan=\"3\" align=\"right\">Vat:</td>";
        result += "<td align=\"right\" >R " + ((totalRecurring * vat) - totalRecurring).ToString("N2") + "</td></tr>";

        result += "<tr><td colspan=\"3\" style=\"border-top: 1px solid Black;\" align=\"right\"><b>";
        result += "Monthly Order Total (Incl. Vat):</b></td>";
        result += "<td align=\"right\" style=\"border-top: 1px solid Black;border-bottom: 1px double Black;\"><b>R " + (totalRecurring * vat).ToString("N2") + "</b></td></tr>";
      }

      result += "</table>";
    }

    return result;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Renders the blu wave email.
  /// </summary>
  /// <returns></returns>
  public string RenderBluWaveEmail()
  {
    string result = RenderClientEmail();
    //Any additional info here...
    return result;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Returns the basket as a data set.
  /// </summary>
  /// <returns></returns>
  public DataSet AsDataSet()
  {
    LoadBasket();

    DataSet result = new DataSet();
    DataTable dt = result.Tables.Add("Brewed");

    dt.Columns.Add("ProductId", Type.GetType("System.Int32"));
    dt.Columns.Add("Product", Type.GetType("System.String"));
    dt.Columns.Add("Qty", Type.GetType("System.Int32"));
    dt.Columns.Add("Term", Type.GetType("System.Int32"));
    dt.Columns.Add("Cost", Type.GetType("System.Decimal"));
    dt.Columns.Add("Total", Type.GetType("System.Decimal"));

    foreach (BasketItem item in Basket)
    {
      DataRow dr = dt.NewRow();
      dr[0] = item.ProductId;
      dr[1] = item.Product;
      dr[2] = item.Qty;
      dr[3] = item.Term;
      dr[4] = item.Cost;
      dr[5] = item.Cost * item.Qty;
      dt.Rows.Add(dr);
    }

    return result;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Totals the basket.
  /// </summary>
  /// <returns></returns>
  public static float TotalBasket()
  {
    float result = 0;
    clsBasket basket = new clsBasket();
    basket.LoadBasket();
    foreach (BasketItem item in basket.Basket)
    {
      result += (item.Cost * item.Qty);
    }

    return result;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Totals the Monthly basket.
  /// </summary>
  /// <returns></returns>
  public static float TotalMonthlyBasket()
  {
    float result = 0;
    clsBasket basket = new clsBasket();
    basket.LoadBasket();
    foreach (BasketItem item in basket.Basket)
    {
      if (item.Term > 1)
        result += (item.Cost * item.Qty);
    }

    return result;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Totals the Once off basket.
  /// </summary>
  /// <returns></returns>
  public static float TotalOnceOffBasket()
  {
    float result = 0;
    clsBasket basket = new clsBasket();
    basket.LoadBasket();
    foreach (BasketItem item in basket.Basket)
    {
      if (item.Term == 1)
        result += (item.Cost * item.Qty);
    }

    return result;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Totals the basket and Adds vat.
  /// </summary>
  /// <returns></returns>
  public static float TotalBasketWithVat()
  {
    float result = TotalBasket();
    float vat = Utils.StrToFloatDef(System.Configuration.ConfigurationManager.AppSettings.Get("VATAmount"), 1.14f);
    return result * vat;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Totals the basket and Adds vat.
  /// </summary>
  /// <returns></returns>
  public static float TotalOnceOffWithVat()
  {
    float result = TotalOnceOffBasket();
    float vat = Utils.StrToFloatDef(System.Configuration.ConfigurationManager.AppSettings.Get("VATAmount"), 1.14f);
    return result * vat;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Totals the basket and Adds vat.
  /// </summary>
  /// <returns></returns>
  public static float TotalMonthlyBasketWithVat()
  {
    float result = TotalMonthlyBasket();
    float vat = Utils.StrToFloatDef(System.Configuration.ConfigurationManager.AppSettings.Get("VATAmount"), 1.14f);
    return result * vat;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Determines whether the users basker [has a recurring item].
  /// </summary>
  /// <returns>
  ///   <c>true</c> if [has recurring item]; otherwise, <c>false</c>.
  /// </returns>
  public static bool HasRecurringItem()
  {
    bool result = false;
    clsBasket basket = new clsBasket();
    basket.LoadBasket();
    foreach (BasketItem item in basket.Basket)
    {
      if (item.Term > 1)
      {
        result = true;
        break;
      }
    }

    return result;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Determines whether the basket [has a once off item].
  /// </summary>
  /// <returns>
  ///   <c>true</c> if [has a once off item]; otherwise, <c>false</c>.
  /// </returns>
  public static bool HasOnceOffItem()
  {
    bool result = false;
    clsBasket basket = new clsBasket();
    basket.LoadBasket();
    foreach (BasketItem item in basket.Basket)
    {
      if (item.Term == 1)
      {
        result = true;
        break;
      }
    }

    return result;
  }

  /****************************************************************************************************/
  /// <summary>
  /// Get the maximum term.
  /// </summary>
  /// <returns></returns>
  public int GetMaxTerm()
  {
    int result = 1;
    LoadBasket();
    foreach (BasketItem item in Basket)
    {
      if (item.Term > result)
      {
        result = item.Term;
        break;
      }
    }
    return result;
  }

  /****************************************************************************************************/
}