private static async Task <IEnumerable <IGrouping <string, ShowTime> > > InnerReadShowTimesFromWebAsync(Theater theaterFromDb)
{
HtmlDocument marketsDocument = await InternetHelpers.GetPageHtmlDocumentAsync(theaterFromDb.CalendarUrl);
HtmlNode showTimeControllerNode = marketsDocument.DocumentNode.SelectSingleNode("//div[@ng-controller='ShowtimeController']");
Regex showTimesRegex = new Regex(@"initCalendar\('([^']+)','([^']+)'\)");
Match showTimesMatch = showTimesRegex.Match(showTimeControllerNode.Attributes["ng-init"].Value);
if (!showTimesMatch.Success)
{
_logger.Error("Show times did not have expected format {ShowTimeController}", showTimeControllerNode.OuterHtml);
throw new Exception("Show times did not have expected format");
}
string showTimesUrlBase = showTimesMatch.Groups[1].Value;
string showTimesUrlCode = showTimesMatch.Groups[2].Value;
string ajaxUrl = $"{showTimesUrlBase}calendar/{showTimesUrlCode}";
string jsonContent = await InternetHelpers.GetPageContentAsync(ajaxUrl);
JToken json = JToken.Parse(jsonContent, new JsonLoadSettings());
// https://drafthouse.com/austin/tickets/showtime/0002/29212
//IEnumerable<IGrouping<string, ShowTime>> movies =
if (json["Calendar"]["Cinemas"] == null)
{
_logger.Warn("No show time cinemas for {Theater}", theaterFromDb.Name);
return(Enumerable.Empty <IGrouping <string, ShowTime> >());
}
IEnumerable <IGrouping <string, ShowTime> > showTimesByMovie =
from cinemaToken in json["Calendar"]["Cinemas"]
from monthsNode in cinemaToken["Months"]
from weeksNode in monthsNode["Weeks"]
from daysNode in weeksNode["Days"]
where daysNode["Films"] != null
from filmsNode in daysNode["Films"]
from seriesNode in filmsNode["Series"]
from formatsNode in seriesNode["Formats"]
from sessionsNode in formatsNode["Sessions"]
let cinemaSlug = cinemaToken["MarketSlug"]?.Value <string>()
let cinemaId = cinemaToken["CinemaId"]?.Value <string>()
let title = filmsNode["FilmName"]?.Value <string>()
let movieTitle = title
let showTimeDateTime = sessionsNode["SessionDateTime"]?.Value <DateTime>()
let showTimeId = sessionsNode["SessionId"]?.Value <string>()
let showTimeStatus = sessionsNode["SessionStatus"]?.Value <string>()
let seatsLeft = sessionsNode["SeatsLeft"]?.Value <int>()
let showTimeUrl = $"https://drafthouse.com/{cinemaSlug}/tickets/showtime/{cinemaId}/{showTimeId}"
let showTime = new ShowTime(theaterFromDb, showTimeUrl, showTimeDateTime, showTimeStatus, seatsLeft)
group showTime by movieTitle
into movieGroup
select movieGroup;
return(showTimesByMovie);
}
private static async Task <IEnumerable <IGrouping <string, ShowTime> > > ReadShowTimesFromWebAsync(Theater theaterFromDb)
{
try
{
_logger.Info("Loading movies for {Theater}", theaterFromDb.Name);
// Sometimes the browser will return the page source before the page is fully loaded, in those
// cases just retry until you get something.
return(await PolicyHelpers.RetryPolicy.ExecuteAsync(async() => await InnerReadShowTimesFromWebAsync(theaterFromDb)));
}
catch (Exception ex)
{
_logger.Error(ex, "Retry limit exceeded when reading showtimes for {Theater}", theaterFromDb.Name);
return(Enumerable.Empty <IGrouping <string, ShowTime> >());
}
}