public async Task <IEnumerable <Trip> > SearchAsync(TripSearchRequest request)
{
// Search for offered trips
var offeredTrips = tripOfferRepo.Query()
.Where(t => request.Start.Equals(t.StartLocation))
.Where(t => request.End.Equals(t.EndLocation))
.Where(t => t.StartTime >= request.StartTime);
// Search for trips provided by public transport
var publicTrips = new List <Trip>();
foreach (var provider in publicTransportProviders)
{
try {
var providerResult = await provider.SearchAsync(request);
publicTrips.AddRange(providerResult);
} catch (Exception ex) {
logger.LogWarning(ex, "Provider '{0}' failed while searching for trips!", provider.GetType().Name);
}
}
// Concat and order by duration
return(offeredTrips
.Concat(publicTrips)
.OrderBy(t => t.StartTime)
.ThenBy(t => t.EstimatedDuration));
}
public IEnumerable <KeyValuePair <string, string> > BuildSearch(TripSearchRequest request)
{
return(new Dictionary <string, string>()
{
{ "existBikeEverywhere", "yes" },
{ "existHafasAttrInc", "yes" },
{ "existHafasDemo3", "yes" },
{ "HWAI=JS!ajax", "yes" },
{ "HWAI=JS!js", "yes" },
{ "ignoreTypeCheck", "1" },
{ "queryPageDisplayed", "yes" },
{ "REQ0HafasSearchForw", "1" },
{ "REQ0JourneyDate", request.StartTime.ToString("dd.MM.yyyy") },
{ "REQ0JourneyProduct_list", "0:1111111111011100-000000" },
{ "REQ0JourneyStopsS0A", "255" },
{ "REQ0JourneyStopsS0G", request.Start.Name },
{ "REQ0JourneyStopsS0ID", "" },
{ "REQ0JourneyStopsZ0A", "255" },
{ "REQ0JourneyStopsZ0G", request.End.Name },
{ "REQ0JourneyStopsZ0ID", "" },
{ "REQ0JourneyTime", request.StartTime.ToString("HH:mm") },
{ "start", "Verbindungen suchen" },
{ "wDayExt0", "Mo|Di|Mi|Do|Fr|Sa|So" },
{ "wDayExt1", "Mo|Di|Mi|Do|Fr|Sa|So" }
});
}
public Task <IEnumerable <PublicTransportTrip> > SearchAsync(TripSearchRequest request)
{
throw new NotImplementedException();
}
public async Task <IEnumerable <PublicTransportTrip> > SearchAsync(TripSearchRequest request)
{
var client = new HttpClient();
var startResponse = (await client.GetAsync(options.Host))
.EnsureSuccessStatusCode();
var startHtml = new HtmlDocument();
startHtml.LoadHtml(await startResponse.Content.ReadAsStringAsync());
var formNode = startHtml.DocumentNode.SelectSingleNode("//form[@id='HFSQuery']");
var formAction = formNode.Attributes["action"].Value;
int queryId = int.Parse(queryIdRegex.Match(formAction).Groups["id"].Value);
var requestContent = options.BuildSearch(request);
var response = (await client.PostAsync(
options.SearchURI(queryId),
new FormUrlEncodedContent(requestContent)))
.EnsureSuccessStatusCode();
var resultHtml = new HtmlDocument();
resultHtml.LoadHtml(await response.Content.ReadAsStringAsync());
var resultTable = resultHtml.DocumentNode.SelectSingleNode("//table[@class='resultTable']");
if (resultTable == null)
{
throw new InvalidOperationException("No trips could be found!");
}
var result = new List <PublicTransportTrip>();
foreach (var row in resultTable.SelectNodes("//tr[starts-with(@id, 'trOverview') and not(starts-with(@id, 'trOverviewHint') )]"))
{
var builder = PublicTransportTrip.NewBuilder(Operator);
DateTime startDate = DateTime.MinValue;
TimeSpan startTime = TimeSpan.MinValue;
DateTime endDate = DateTime.MinValue;
TimeSpan endTime = TimeSpan.MinValue;
foreach (var column in row.SelectNodes("td"))
{
switch (column.Attributes["headers"]?.Value)
{
case "hafasOVStop":
var startStop = GetTextContent(column.FirstChild);
var endStop = GetTextContent(column.LastChild);
builder.SetStartLocation(new Destination(startStop, 0, 0));
builder.SetEndLocation(new Destination(endStop, 0, 0));
break;
case "hafasOVDate":
startDate = DateTime.ParseExact(column.InnerText, "dd.MM.yyyy", CultureInfo.InvariantCulture);
endDate = startDate; // TODO Could go over 2 days
break;
case "hafasOVTime":
var planned = column.SelectSingleNode("div/div[@class='planed']").InnerText;
string[] lines = planned.Trim().Split('\n');
startTime = TimeSpan.Parse(lines[0].Replace("ab", ""));
endTime = TimeSpan.Parse(lines[1].Replace("an", ""));
break;
case "hafasOVDuration":
var duration = TimeSpan.Parse(column.InnerText);
break;
case "hafasOVChanges":
break;
case "hafasOVProducts":
builder.AddType(PublicTransportType.Train); // TODO
break;
default:
break;
}
}
builder.SetStartTime(startDate + startTime);
builder.SetEndTime(endDate + endTime);
result.Add(builder.Build());
}
return(result);
string GetTextContent(HtmlNode node)
{
string text = node.InnerText;
text = HtmlEntity.DeEntitize(text);
return(text.Trim());
}
}
