/// <summary>
/// Parses out the URL to the product's image thumbnail (if one exists)
// and then calls DownloadWebImage to return a BitmapImage
/// </summary>
/// <param name="itemHtml"></param>
/// <returns></returns>
public static BitmapImage GetImageThumbnail(string itemHtml)
{
// TODO: does Amazon use a standardized image format?
// For now, allowing for multiple possible formats.
string imageURLPattern = @"(http(s?):/)(/[^/]+)+\.(?:jpg|gif|png)";
string match = GetSingleRegExMatch(itemHtml, imageURLPattern);
if (match.Length == 0)
{
return(null);
}
if (Uri.IsWellFormedUriString(match, UriKind.Absolute))
{
Uri imageURL = new Uri(match);
return(Scraper.DownloadWebImage(imageURL));
}
else
{
return(null);
}
}
/// <summary>
/// Given a product's unique Amazon ID, loads the review distribution histogram.
/// Much faster than an entire pageload for detailed review info.
/// </summary>
/// <param name="asin"></param>
/// <returns></returns>
public static string LoadReviewHistogram(string asin)
{
Uri reviewHistogramPopupURL = new Uri(Constants.REVIEW_HISTOGRAM_URL + asin);
return Scraper.CreateHttpRequest(reviewHistogramPopupURL);
}