invoice.cs

The purpose of this code is to assist developers get some good ideas for how to build a PayPal shop

using System;
using System.Data;
using System.Configuration;
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;
using System.Text;

/// <summary>
/// Summary description for Invoice
/// </summary>
public class Invoice
{
    private string _customerComments = "";
    public string CustomerComments
    {
        get
        {
            return _customerComments;
        }
        set
        {
            _customerComments = value.Trim();
        }
    }

    private ArrayList _invoiceItems = new ArrayList();
    public ArrayList InvoiceItems
    {
        get
        {
            return _invoiceItems;
        }
        set
        {
            _invoiceItems = value;
        }
    }

    private string _currency = "USD"; //currency to display in
    public string Currency
    {
        get
        {
            return _currency;
        }
        set
        {
            if (value == null || value.Trim() == "")
            {
                _currency = "USD";
            }
            else
            {
                _currency = value.ToUpper();
            }
        }
    }

    
    private string _invoiceId = "";
    /// <summary>
    /// Same as session Id (unless pulling from database)
    /// </summary>
    public string InvoiceId
    {
        get
        {
            return _invoiceId;
        }
        set
        {
            _invoiceId = value;
        }
    }

    public string ProductNames
    {
        get
        {
            string productNames = "";
            foreach (InvoiceItem x in _invoiceItems)
            {
                productNames += x.ProductName.Trim() + ", ";
                
            }
            if (productNames.Length > 2)
            {
                productNames = productNames.Substring(0, productNames.Length - 2);
            }
            return productNames;
        }
    }

    /// <summary>
    /// RETURNS the HTML Encoded version of the Invoice data
    ///   May be useful in emails or displays of invoice
    /// </summary>
    /// <returns></returns>
    public override string ToString()
    {
        StringBuilder invoiceHtml = new StringBuilder();
        invoiceHtml.Append("<b>INVOICE : ").Append(this.InvoiceId.ToString()).Append("</b><br />");
        invoiceHtml.Append("<b>DATE : </b>").Append(DateTime.Now.ToShortDateString()).Append("<br />");
        invoiceHtml.Append("<b>Invoice Amt :</b> $").Append(this.Total.ToString("#.00")).Append("<br />");

        invoiceHtml.Append("<br /><b>CUSTOMER CONTACT INFO:</b><br />");
        invoiceHtml.Append("<b>Name : </b>").Append(this.ContactName).Append("<br />");
        invoiceHtml.Append("<b>Phone : </b>").Append(this.ContactPhone).Append("<br />");
        invoiceHtml.Append("<b>Email : </b>").Append(this.ContactEmail).Append("<br />");
        invoiceHtml.Append("<b>Address : </b><br />").Append(this.ContactAddress1).Append("<br />");
        invoiceHtml.Append(this.ContactAddress2).Append("<br />");
        invoiceHtml.Append(this.ContactCity).Append(", ").Append(this.ContactStateProvince).Append(" ").Append(this.ContactZip).Append("<br />");
        invoiceHtml.Append("<br /><b>SHIP TO:</b><br />");
        invoiceHtml.Append("<b>Name : </b>").Append(this.ShipToName).Append("<br />");
        invoiceHtml.Append("<b>Address : </b><br />").Append(this.ShipToAddress1).Append("<br />");
        invoiceHtml.Append(this.ShipToAddress2).Append("<br />");
        invoiceHtml.Append(this.ShipToCity).Append(", ").Append(this.ShipToStateProvince).Append(" ").Append(this.ShipToZip).Append("<br />");
        invoiceHtml.Append("<br /><b>PRODUCTS:</b><br /><table><tr><th>Qty</th><th>Product</th></tr>");
        foreach (InvoiceItem x in _invoiceItems)
        {
            invoiceHtml.Append("<tr><td>").Append(x.Quantity.ToString()).Append("</td><td>").Append(x.ProductName).Append("</td></tr>");
        }
        invoiceHtml.Append("</table>");

        return invoiceHtml.ToString();
    }


    /// <summary>
    /// PURPOSE: to write PayPay item list for invoice
    /// </summary>
    public string PaypalItemList
    {
        get
        {
            StringBuilder payPalItems = new StringBuilder();
            int counter = 0;
            foreach (InvoiceItem x in _invoiceItems)
            {
                counter++;
                string itemNameTemplate = "<input type=\"hidden\" name=\"item_name_$count$\" value=\"$itemName$\" />\n";
                string amountTemplate = "<input type=\"hidden\" name=\"amount_$count$\" value=\"$amount$\" />\n";
                string qtyTemplate = "<input type=\"hidden\" name=\"quantity_$count$\" value=\"$quantity$\" />\n";
                string shippingTemplate = "<input type=\"hidden\" name=\"shipping_$count$\" value=\"$shipping$\" />\n";
                string handlingTemplate = "<input type=\"hidden\" name=\"handling_$count$\" value=\"$handling$\" />\n\n";
                
                itemNameTemplate = itemNameTemplate.Replace("$itemName$",x.ProductName).Replace("$count$",counter.ToString());
                amountTemplate = amountTemplate.Replace("$amount$",x.UnitPrice.ToString("#.00")).Replace("$count$", counter.ToString());
                qtyTemplate = qtyTemplate.Replace("$quantity$", x.Quantity.ToString()).Replace("$count$", counter.ToString());
                shippingTemplate = shippingTemplate.Replace("$shipping$", (x.ShippingCost * x.Quantity).ToString("#.00")).Replace("$count$", counter.ToString());
                handlingTemplate = handlingTemplate.Replace("$handling$", (x.HandlingCost * x.Quantity).ToString("#.00")).Replace("$count$", counter.ToString());

                payPalItems.Append(itemNameTemplate).Append(amountTemplate).Append(qtyTemplate).Append(shippingTemplate).Append(handlingTemplate);
            }

            return payPalItems.ToString();
        }
    }

    /// <summary>
    /// Cost of Unit Prices * qty
    /// </summary>
    public decimal SubTotal
    {
        get
        {
            decimal subtotal = 0.0M;
            foreach (InvoiceItem x in _invoiceItems)
            {
                subtotal += (x.UnitPrice * x.Quantity);
            }
            return subtotal;
        }
    }

    /// <summary>
    /// Retrieve Shipping cost for Invoice
    /// </summary>
    public decimal ShippingCost
    {
        get
        {
            decimal shipping = 0.0M;
            foreach (InvoiceItem x in _invoiceItems)
            {
                shipping += (x.ShippingCost * x.Quantity);
            }
            return shipping;
        }
    }

    /// <summary>
    /// Any Handling costs
    /// </summary>
    public decimal HandlingCost
    {
        get
        {
            decimal handling = 0.0M;
            foreach (InvoiceItem x in _invoiceItems)
            {
                handling += (x.HandlingCost * x.Quantity);
            }
            return handling;
        }
    }

    public decimal Taxes
    {
        get
        {
            decimal taxes = 0.0M;
            foreach (InvoiceItem x in _invoiceItems)
            {
                taxes += (x.Taxes);
            }
            return taxes;
        }
    }

    public decimal Total
    {
        get
        {
            return this.SubTotal + this.HandlingCost + this.Taxes + this.ShippingCost;
        }
    }

   

    #region Ship To Properties

    private string _shipToName = "";
    public string ShipToName
    {
        get
        {
            return _shipToName;
        }
        set
        {
            _shipToName = value.Trim();
        }
    }

    private string _shipToAddress1 = "";
    public string ShipToAddress1
    {
        get
        {
            return _shipToAddress1;
        }
        set
        {
            _shipToAddress1 = value.Trim();
        }
    }

    private string _shipToAddress2 = "";
    public string ShipToAddress2
    {
        get
        {
            return _shipToAddress2;
        }
        set
        {
            _shipToAddress2 = value.Trim();
        }
    }

    private string _shipToCity = "";
    public string ShipToCity
    {
        get
        {
            return _shipToCity;
        }
        set
        {
            _shipToCity = value.Trim();
        }
    }

    private string _shipToStateProvince = "";
    public string ShipToStateProvince
    {
        get
        {
            return _shipToStateProvince;
        }
        set
        {
            _shipToStateProvince = value.Trim();
        }
    }

    private string _shipToZip = "";
    public string ShipToZip
    {
        get
        {
            return _shipToZip;
        }
        set
        {
            _shipToZip = value.Trim();
        }
    }

    private string _shipToCountry = "US";
    public string ShipToCountry
    {
        get
        {
            return _shipToCountry;
        }
        set
        {
            _shipToCountry = value.Trim();
        }
    }
    #endregion

    #region Contact Properties

    private string _contactName = "";
    public string ContactName
    {
        get
        {
            return _contactName;
        }
        set
        {
            _contactName = value.Trim();
        }
    }

    private string _contactPhone = "";
    public string ContactPhone
    {
        get
        {
            return _contactPhone;
        }
        set
        {
            _contactPhone = value.Trim();
        }
    }

    private string _contactEmail = "";
    public string ContactEmail
    {
        get
        {
            return _contactEmail;
        }
        set
        {
            _contactEmail = value.Trim();
        }
    }

    private string _contactAddress1 = "";
    public string ContactAddress1
    {
        get
        {
            return _contactAddress1;
        }
        set
        {
            _contactAddress1 = value.Trim();
        }
    }

    private string _contactAddress2 = "";
    public string ContactAddress2
    {
        get
        {
            return _contactAddress2;
        }
        set
        {
            _contactAddress2 = value.Trim();
        }
    }

    private string _contactCity = "";
    public string ContactCity
    {
        get
        {
            return _contactCity;
        }
        set
        {
            _contactCity = value.Trim();
        }
    }

    private string _contactStateProvince = "";
    public string ContactStateProvince
    {
        get
        {
            return _contactStateProvince;
        }
        set
        {
            _contactStateProvince = value.Trim();
        }
    }

    private string _contactZip = "";
    public string ContactZip
    {
        get
        {
            return _contactZip;
        }
        set
        {
            _contactZip = value.Trim();
        }
    }

    private string _contactCountry = "US";
    public string ContactCountry
    {
        get
        {
            return _contactCountry;
        }
        set
        {
            _contactCountry = value.Trim();
        }
    }

    #endregion


    public Invoice()
	{
		//
		// TODO: Add constructor logic here
		//
	}

    public Invoice(string invoiceId)
    {
        this.InvoiceId = invoiceId;
    }

    public void EmptyCart()
    {
        _invoiceItems = new ArrayList();
    }

    /// <summary>
    /// Adding another item to the cart (may be one there already - dont know)
    /// </summary>
    /// <param name="productId"></param>
    /// <param name="qty"></param>
    public void AddToInvoice(int productId, int qty)
    {
        bool foundInvoiceItem = false;

        foreach (InvoiceItem x in _invoiceItems)
        {
            if (x.ProductId == productId)
            {
                x.Quantity += qty;
                if (x.Quantity <= 0)
                {
                    RemoveProduct(productId);
                }
                foundInvoiceItem = true;
                break;
            }
        }

        if (!foundInvoiceItem && qty>0)
        {
            InvoiceItem invItem = new InvoiceItem(this.InvoiceId, productId, qty);
            _invoiceItems.Add(invItem);
        }
    }


    
    /// <summary>
    /// Updating Invoice Quantity
    /// </summary>
    /// <param name="productId"></param>
    /// <param name="qty"></param>
    public void UpdateProductQuantity(int productId, int qty)
    {
        if (qty <= 0)
        {
            qty = 0;
            RemoveProduct(productId);
        }
        else
        {
            foreach (InvoiceItem x in _invoiceItems)
            {
                if (x.ProductId == productId)
                {
                    x.Quantity = qty;
                    break;
                }
            }
        }
    }

    public void RemoveProduct(int productId)
    {
        foreach (InvoiceItem x in _invoiceItems)
        {
            if (x.ProductId == productId)
            {
                InvoiceItems.Remove(x);
                break;
            }
        }    
    }

    

}