private async Task <SteamMarketResource> DoCheckupRequest(int appId)
{
var checkupQuery = new SteamMarketQuery(0, 1, "quantity", appId);
var checkupRequest = await MakeRequest(checkupQuery);
return(checkupRequest);
}
private async Task <SteamMarketResource> MakeRequest(SteamMarketQuery query)
{
var request = new HttpRequestMessage(HttpMethod.Get, _baseUrl + query.ToString());
var res = await new HttpClient().SendAsync(request);
var resString = await res.Content.ReadAsStringAsync();
var resObj = SteamMarketResource.FromJson(resString);
return(resObj);
}
public async Task <List <SteamMarketItem> > Scrape(int appId)
{
var checkupRequest = await DoCheckupRequest(appId);
if (!checkupRequest.Success)
{
throw new NoneExpectedResultException("The API call responsed with a none success statuscode");
}
var items = new List <SteamMarketItem>();
for (int i = 0; i < (checkupRequest.TotalCount / PageSize) + 1; i++)
{
var query = new SteamMarketQuery(i * PageSize, PageSize, "quantity", appId);
var request = await MakeRequest(query);
if (!request.Success)
{
throw new NoneExpectedResultException("The API call responsed with a none success statuscode");
}
var document = ParseDocument(request.Results);
var elements = document.QuerySelectorAll("a.market_listing_row_link");
foreach (var element in elements)
{
var img = element.FirstElementChild.FirstElementChild.GetAttribute("src");
var name = element.QuerySelector("div.market_listing_item_name_block span").TextContent;
items.Add(new SteamMarketItem
{
ImageSrc = img,
Name = name
});
}
}
return(items);
}
