public async Task <AdvertSearchResult> GetAdvertListAsync(AdvertSearch searchParams, Action <string> userNotify = null)
{
Debug.Write("GetAdvertListAsync(AdvertSearch searchParams)");
if (searchParams == null)
{
throw new NullReferenceException("AdvertSearch is null");
}
var resultList = new AdvertSearchResult()
{
Correct = false,
ErrorMessage = String.Empty,
Page = 1,
AllPage = 1,
AdvertShortsList = new List <AdvertShort>(),
};
var urlRequest = searchParams.GetURL;
if (urlRequest.Length == 0)
{
Debug.Write("GetAdvertListAsync(AdvertSearch searchParams) => urlRequest.Length == 0");
resultList.ErrorMessage = "Błędny URL";
return(resultList);
}
IEnumerable <AdvertShort> ProcessResponse(StringBuilder ResponseHTMLBody)
{
if (ResponseHTMLBody.Length == 0)
{
yield break;
}
int promoPos, normalPos;
bool rowEven = false;
do
{
promoPos = ResponseHTMLBody.IndexOf("promobox-title-left", 0, true);
normalPos = ResponseHTMLBody.IndexOf("normalbox-title-left", 0, true);
int nextPos = Math.Min(promoPos, normalPos);
nextPos = (nextPos == -1 && promoPos > -1) ? promoPos : nextPos;
nextPos = (nextPos == -1 && normalPos > -1) ? normalPos : nextPos;
if (nextPos == -1)
{
yield break;
}
bool highlighted = (nextPos == promoPos) ? true : false;
ResponseHTMLBody.Remove(0, nextPos);
//url
if (ResponseHTMLBody.IndexOf("<a href=\"/", 0, true) == -1)
{
Debug.Write("Task<AdvertSearchResult> GetAdvertListAsync => url not found");
yield break;
}
ResponseHTMLBody.CutFoward("<a href=\"/");
string aUrl = ResponseHTMLBody.ToString(0, ResponseHTMLBody.IndexOf("\">", 0, true)).Trim();
if (aUrl.Length == 0)
{
Debug.Write("Task<AdvertSearchResult> aUrl.Length == 0");
yield break;
}
//title
ResponseHTMLBody.CutFoward("\">");
string aTitle = ResponseHTMLBody.ToString(0, ResponseHTMLBody.IndexOf("</a>", 0, true)).CutFoward(".").Trim();
if (aTitle.Length == 0)
{
Debug.Write("Task<AdvertSearchResult> aUrl.Length == 0");
yield break;
}
//price
ResponseHTMLBody.CutFoward("cena: <strong>");
string aPrice = ResponseHTMLBody.ToString(0, ResponseHTMLBody.IndexOf("zł</strong>", 0, true)).Trim();
if (!Int32.TryParse(aPrice, out int aPriceInt))
{
Debug.Write("GetAdvertListAsync(AdvertSearch searchParams) => !Int32.TryParse(aPrice, out int aPriceInt)");
aPriceInt = 0;
}
//id
ResponseHTMLBody.CutFoward("id=\"zr");
string aId = ResponseHTMLBody.ToString(0, ResponseHTMLBody.IndexOf("\">", 0, true)).Trim();
if (!Int32.TryParse(aId, out int aIdInt))
{
Debug.Write("GetAdvertListAsync(AdvertSearch searchParams) => !Int32.TryParse(aId, out int aIdInt))");
yield break;
}
//thumb
ResponseHTMLBody.CutFoward("src=\"");
string aThumb = ResponseHTMLBody.ToString(0, ResponseHTMLBody.IndexOf("\"", 0, true)).Trim();
//desc
ResponseHTMLBody.CutFoward("window.location");
ResponseHTMLBody.CutFoward("\">");
string aDesc = ResponseHTMLBody.ToString(0, ResponseHTMLBody.IndexOf("</div>", 0, true)).StripHTML().Trim();
//add
ResponseHTMLBody.CutFoward("Dodane : <b>");
string aAdd = ResponseHTMLBody.ToString(0, ResponseHTMLBody.IndexOf("</b>", 0, true)).Trim();
if (aAdd.Length == 0)
{
Debug.Write("Task<AdvertSearchResult> aAdd.Length == 0");
yield break;
}
yield return(new AdvertShort()
{
AdverIDinRzeszowiak = aIdInt,
Title = aTitle,
URLPath = aUrl,
ThumbnailUrl = aThumb,
DescriptionShort = aDesc,
DateAddDateTime = GetDateTimeFromISR(aAdd),
Price = aPriceInt,
Category = searchParams.CategorySearch,
Highlighted = highlighted,
RowEven = rowEven
});
rowEven = !rowEven;
} while (promoPos != -1 || normalPos != -1);
}
var HttpResult = await GetWeb.GetWebPage(urlRequest);
if (!HttpResult.Success)
{
Debug.Write("GetAdvertAsync => !HttpResult.Success");
return(resultList);
}
var responseString = HttpResult.BodyString;
if (responseString.Length == 0)
{
resultList.ErrorMessage = "Sprawdź połączenie internetowe i spróbuj ponownie.";
responseString.Clear();
return(resultList);
}
UpdateCategoryList(responseString); // update category
foreach (var item in ProcessResponse(responseString))
{
resultList.AdvertShortsList.Add(item);
}
if (responseString.IndexOf("<div id=\"oDnns\">Strona ", 0, true) != -1)
{
responseString.CutFoward("<div id=\"oDnns\">Strona ");
string aPage = responseString.ToString(0, responseString.IndexOf("z", 0, true)).Trim();
if (!Int32.TryParse(aPage, out int aPageInt))
{
Debug.Write("GetAdvertListAsync(AdvertSearch searchParams) => !Int32.TryParse(aPage, out int aPageInt)");
aPageInt = 0;
}
resultList.Page = aPageInt;
responseString.CutFoward("z");
string aPageAll = responseString.ToString(0, responseString.IndexOf("</div>", 0, true)).Trim();
if (!Int32.TryParse(aPageAll, out int aPageAllInt))
{
Debug.Write("GetAdvertListAsync(AdvertSearch searchParams) => !Int32.TryParse(aPageAll, out int aPageAllInt)");
aPageAllInt = 0;
}
resultList.AllPage = aPageAllInt;
}
responseString.Clear();
resultList.Correct = true;
return(resultList);
}
protected async Task <bool> SearchExecute(AdvertSearch advertSearch, bool addLoad = false)
{
Debug.Write("SearchExecute");
Activity = true;
ErrorMessage = String.Empty;
_lastAdvertSearch = advertSearch;
OnPropertyChanged("CurrentCategory");
OnPropertyChanged("FilterButtonColor");
if (advertSearch == null)
{
Debug.Write("SearchExecute => advertSearch == null");
return(false);
}
if (addLoad)
{
FotterActivity = true;
Activity = false;
}
else
{
Activity = true;
FotterActivity = false;
AdvertShortList.Clear();
}
var lastAddAdvert = await _rzeszowiakRepository.GetAdvertListAsync(advertSearch);
if (!lastAddAdvert.Correct)
{
if (!addLoad)
{
ErrorMessage = "Błąd podczas ładowania strony.\nSprawdź połączenie internetowe i spróbuj ponownie.";
}
}
else
{
_lastAdvertSearchResult = lastAddAdvert;
var adverId = new List <int>();
foreach (var item in AdvertShortList)
{
adverId.Add(item.AdverIDinRzeszowiak);
}
foreach (var item in lastAddAdvert.AdvertShortsList)
{
if (adverId.IndexOf(item.AdverIDinRzeszowiak) != -1)
{
continue;
}
AdvertShortList.Add(item);
await Task.Delay(50);
}
if (AdvertShortList.Count == 0 && !addLoad)
{
ErrorMessage = "Nic nie znaleziono.\nZmień kryteria wyszukiwania.";
}
}
Activity = false;
FotterActivity = false;
return(true);
}
