public ProductPage Build()
{
var web = new HtmlWeb();
var doc = web.Load(_url);
var maxPrice = Convert.ToDecimal(doc.DocumentNode
.SelectNodes(
"//div[1]/div[@class=' margined' and 1]/div[@class='row column' and 2]/div[@class='row' and 1]/div[1]/table[@class='product_pane' and 1]/tbody[1]/tr[@class='highest_price' and 2]/td[2]")
.Nodes().FirstOrDefault()?.InnerText?.Replace("$", ""));
var minPrice = Convert.ToDecimal(doc.DocumentNode
.SelectNodes(
"//div[1]/div[@class=' margined' and 1]/div[@class='row column' and 2]/div[@class='row' and 1]/div[1]/table[@class='product_pane' and 1]/tbody[1]/tr[@class='lowest_price' and 3]/td[2]")
.Nodes().FirstOrDefault()?.InnerText?.Replace("$", ""));
var startDateRaw = string.Join("", doc.DocumentNode
.SelectNodes(
"//div[1]/div[@class=' margined' and 1]/div[@class='row column' and 2]/div[@class='row' and 1]/div[1]/p[@class='grey' and 1]/small[1]")
.Nodes().Select(x => x.InnerText).ToList());
var startDate = DateTime.Parse(Regex
.Match(startDateRaw, @"(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sept|Oct|Nov|Dec) \d+\, \d+").Value);
var graphParameters = new GraphParameters(startDate, DateTime.Now, 1000, 1000);
var graph = new Graph(_url, graphParameters, minPrice, maxPrice);
return(new ProductPage {
Url = _url, Graph = graph, MinPrice = minPrice, MaxPrice = maxPrice
});
}
public Graph(string url, GraphParameters graphParameters, decimal minprice, decimal maxprice)
{
_url = url;
_graphParameters = graphParameters;
MinPrice = minprice;
MaxPrice = maxprice;
}
/// <summary>
/// Downloads a graph using specified graph parameters
/// </summary>
/// <param name="url">The product url to get the image from</param>
/// <param name="parameters">A set of optional graph parameters</param>
/// <returns>A new image</returns>
private static Bitmap DownloadGraphImage(string url, GraphParameters parameters)
{
var imageUrl = ConvertWebpageUrlToImageUrl(url, parameters.Width, parameters.Height);
return(HttpService.DownloadImage(imageUrl));
}
