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 com.amazon.webservices;
using System.Xml.Serialization;
using System.IO;

public partial class _default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }

    string SearchAmazon(string strKeywords, string strSearchIndex)
    {
        // Create a new instance of the proxy class
        AWSECommerceService myProxy = new AWSECommerceService();

        // Create a new instance of the ItemSearch class
        ItemSearch mySearch = new ItemSearch();

        // ItemSearchRequest stores the actual request parameters
        ItemSearchRequest mySearchRequest = new ItemSearchRequest();

        // Set some parameters, Keyword and Search Index
        mySearchRequest.Keywords = strKeywords;
        mySearchRequest.SearchIndex = strSearchIndex;        

        // Just need Small results, not the full enchilada
        mySearchRequest.ResponseGroup = new string[] { "Medium", "Request"};

        // Set the subscription and associate tags here
        mySearch.AWSAccessKeyId = ConfigurationManager.AppSettings["AWSAccessKeyId"];
        mySearch.AssociateTag = ConfigurationManager.AppSettings["AssociateTag"];

        // Setup request
        mySearch.Request = new ItemSearchRequest[] { mySearchRequest };

        // Execute the request and get the response
        ItemSearchResponse myResponse = myProxy.ItemSearch(mySearch);

        // Parse the response and return the results in HTML
        string strHTML = "";
        foreach (Items myItems in myResponse.Items)
        {
            foreach (Item myItem in myItems.Item)
            {
                // Get the results in HTML
                strHTML += FormatAsHTML(myItem);
            }
        }
        return strHTML;
    }

    /// <summary>
    /// Returns HTML for a specific Amazon Item
    /// </summary>
    /// <param name="myItem">The Item instance</param>
    /// <returns>a string of HTML</returns>
    string FormatAsHTML(Item myItem)
    {
        // Will contain the results
        string strHTML ="";

        // Check for null
        if (myItem != null)
        {
            // Begin the item HTML
            strHTML += "<div class=\"item\">";
            // Add the title
            strHTML += "<h2>" + myItem.ItemAttributes.Title + "</h2>";

            // Add the item image if present
            if (myItem.SmallImage != null)
            {
                strHTML += "<img src=" + myItem.SmallImage.URL;
                strHTML += " width=" + myItem.SmallImage.Width;
                strHTML += " height=" + myItem.SmallImage.Height;
                strHTML += " align=\"left\" >";
            }

            // Add the ASIN
            strHTML += "<b>ASIN:</b> " + myItem.ASIN + "<br/>";

            // Add the price if present
            if (myItem.OfferSummary != null)
            {
                if (myItem.OfferSummary.LowestNewPrice != null)
                {
                    strHTML += "<b>Lowest Price:</b> " +
                       myItem.OfferSummary.LowestNewPrice.FormattedPrice
                       + "<br/>";
                }
            }
            // Add a link to the details
            strHTML += "<a href=\"" + myItem.DetailPageURL + "\">View Details</a><br/>";
            
            // Close the output
            strHTML += "</div>";
        }
        return strHTML;
    }

    protected void cmdSubmit_ServerClick(object sender, EventArgs e)
    {
        string strKeywords = Request.Params["keywords"];
        string strSearchIndex = Request.Params["searchIndex"];
        myResults.Text = SearchAmazon(strKeywords, strSearchIndex);
    }
}