using System;
using System.Data;

using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections.Specialized;
using System.Text;

public partial class Admin_EditDiscount : WebBlocks.AdministrativePage
{
    public int DiscountID
    {
        get { return (ViewState["DiscountID"] == null ? 0 : (int)ViewState["DiscountID"]); }
        set { ViewState["DiscountID"] = value; }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            if (Request["DiscountID"] != null)
                DiscountID = Int32.Parse(Request["DiscountID"]);

            if (DiscountID > 0)
                BindData();
        }
    }

    private void BindData()
    {
        DataRow dr = Database.Discounts_Get(DiscountID);

        if (dr != null)
        {
            txtDiscountTitle.Text = (string)dr["DiscountTitle"];
            txtDiscountCode.Text = (string)dr["DiscountCode"];
            calStartDate.SelectedDate = (DateTime)dr["StartDate"];
            calEndDate.SelectedDate = (DateTime)dr["EndDate"];
            txtRequiredSubtotal.Text = ((decimal)dr["RequiredSubtotal"]).ToString("f");
            txtDiscountDollarAmount.Text = ((decimal)dr["DiscountDollarAmount"]).ToString("f");
            txtDiscountPercentage.Text = ((int)dr["DiscountPercentage"]).ToString();
            ddlGrantsFreeShipping.SelectedValue = ((bool)dr["GrantsFreeShipping"] ? "1" : "0");
            ddlIsOneTimeDiscount.SelectedValue = ((bool)dr["IsOneTimeDiscount"] ? "1" : "0");
            chkAppliesToAll.Checked = (bool)dr["AppliesToAllItems"];
        }
    }

    protected void lbGenerateNew_Click(object sender, EventArgs e)
    {
        ASCIIEncoding asc = new ASCIIEncoding();
        Random r = new Random();
        byte []bytes = new byte[8];
        r.NextBytes(bytes);
        for(int i = 0; i < bytes.Length; i++)
            bytes[i] = (byte)((bytes[i] % 26) + 65);
        txtDiscountCode.Text = asc.GetString(bytes);
    }

    protected override void OnPreRender(EventArgs e)
    {
        if (!chkAppliesToAll.Checked)
        {
            Menu1.Items[1].Enabled = true;
            Menu1.Items[2].Enabled = true;
        }
        else
        {
            Menu1.Items[1].Enabled = false;
            Menu1.Items[2].Enabled = false;
        }
        base.OnPreRender(e);
    }

    #region Item Database Functions
    protected void btnSearch_Click(object sender, EventArgs e)
    {
        if (txtSearchName.Text.Length == 0 &&
            txtSearchSKU.Text.Length == 0)
        {
            BindFindItem(false);
        }
        else
        {
            BindFindItem(true);
        }
    }

    protected void btnAdd_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow gvr in gvItemDatabase.Rows)
        {
            if (gvr.RowType == DataControlRowType.DataRow)
            {
                CheckBox cb = (CheckBox)gvr.Cells[0].Controls[1];
                if (cb.Checked)
                {
                    int ItemID = (int)gvItemDatabase.DataKeys[gvr.RowIndex].Value;

                    Database.DiscountItemMap_Add(DiscountID, ItemID);
                }
            }
        }

        Menu1.Items[1].Selected = true;
        mvContent.ActiveViewIndex = 1;

        BindItemList();
    }

    protected void btnRemoveSelected_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow gvr in gvItems.Rows)
        {
            if (gvr.RowType == DataControlRowType.DataRow)
            {
                CheckBox cb = (CheckBox)gvr.Cells[0].Controls[1];
                if (cb.Checked)
                {
                    int ItemID = (int)gvItems.DataKeys[gvr.RowIndex].Value;

                    Database.DiscountItemMap_Delete(DiscountID, ItemID);
                }
            }
        }

        BindItemList();
    }

    #endregion

    protected void Menu1_MenuItemClick(object sender, MenuEventArgs e)
    {
        mvContent.ActiveViewIndex = Int32.Parse(e.Item.Value);

        if (mvContent.ActiveViewIndex == 1)
            BindItemList();
        else if (mvContent.ActiveViewIndex == 2)
            BindFindItem(false);
    }

    private void BindItemList()
    {
        DataTable dt = Database.Items_GetByDiscountID(DiscountID);

        gvItems.DataSource = dt;
        gvItems.DataBind();
    }

    private void BindFindItem(bool FullSearch)
    {
        DataTable dt;
        if (FullSearch)
        {
            string srchSKU = "%";
            if (txtSearchSKU.Text.Length > 0)
                srchSKU += txtSearchSKU.Text + "%";

            string srchName = "%";
            if (txtSearchName.Text.Length > 0)
                srchName += txtSearchName.Text + "%";

            dt = Database.DiscountItemMap_SearchForItemsNotIncluded(DiscountID, srchSKU, srchName);
        }
        else
        {
            dt = Database.DiscountItemMap_GetAllItemsNotIncluded(DiscountID);
        }

        gvItemDatabase.DataSource = dt;
        gvItemDatabase.DataBind();
    }

    protected void chkAppliesToAll_CheckedChanged(object sender, EventArgs e)
    {
        if (!chkAppliesToAll.Checked)
        {
            Menu1.Items[1].Enabled = true;
            Menu1.Items[2].Enabled = true;

            BindFindItem(false);
            Menu1.Items[2].Selected = true;
            mvContent.ActiveViewIndex = 2;
        }
    }

    protected void btnSave_Click(object sender, EventArgs e)
    {
        if (DiscountID == 0)
        {
            DiscountID = Database.Discounts_Add(txtDiscountTitle.Text,
                                                txtDiscountCode.Text,
                                                calStartDate.SelectedValue.Value,
                                                calEndDate.SelectedValue.Value,
                                                (ddlIsOneTimeDiscount.SelectedValue == "1"),
                                                false,
                                                Decimal.Parse(txtRequiredSubtotal.Text),
                                                Decimal.Parse(txtDiscountDollarAmount.Text),
                                                Int32.Parse(txtDiscountPercentage.Text),
                                                (ddlGrantsFreeShipping.SelectedValue == "1"),
                                                chkAppliesToAll.Checked);

            Database.DiscountItemMap_UpdateDiscountID(DiscountID);
        }
        else
        {
            Database.Discounts_Update(DiscountID,
                                    txtDiscountTitle.Text,
                                    txtDiscountCode.Text,
                                    calStartDate.SelectedValue.Value,
                                    calEndDate.SelectedValue.Value,
                                    (ddlIsOneTimeDiscount.SelectedValue == "1"),
                                    false,
                                    Decimal.Parse(txtRequiredSubtotal.Text),
                                    Decimal.Parse(txtDiscountDollarAmount.Text),
                                    Int32.Parse(txtDiscountPercentage.Text),
                                    (ddlGrantsFreeShipping.SelectedValue == "1"),
                                    chkAppliesToAll.Checked);
        }

        Response.Redirect("Discounts.aspx");
    }

    protected void btnDelete_Click(object sender, EventArgs e)
    {
        Database.Discounts_Delete(DiscountID);

        Response.Redirect("Discounts.aspx");
    }

    protected void btnSelectAll_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow gvr in gvItemDatabase.Rows)
        {
            if (gvr.RowType == DataControlRowType.DataRow)
            {
                CheckBox cb = (CheckBox)gvr.Cells[0].Controls[1];
                cb.Checked = true;
            }
        }
    }
}