Skip to content
This repository was archived by the owner on Jan 4, 2026. It is now read-only.

🍿 Fix Regal again #39

Merged
haydenmc merged 1 commit into from
Jan 20, 2025
Merged

🍿 Fix Regal again #39

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
69 changes: 59 additions & 10 deletions src/Theorem/Middleware/RegalMiddleware.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,8 @@ namespace Theorem.Middleware
/// </summary>
public class RegalMiddleware : IMiddleware
{
const int NUM_RETRIES = 7;

private readonly ILogger<RegalMiddleware> _logger;

private ConfigurationSection _configuration;
Expand All @@ -38,8 +40,6 @@ public class RegalMiddleware : IMiddleware

private Timer _postTimer;

private HttpClient _httpClient = new();

public RegalMiddleware(
ILogger<RegalMiddleware> logger,
ConfigurationSection configuration,
Expand Down Expand Up @@ -251,6 +251,12 @@ private async Task<FilmScheduleModel> GetMoviesForLocationsAsync(
{
var returnValue = new FilmScheduleModel();

var handler = new HttpClientHandler()
{
CookieContainer = new()
};
HttpClient httpClient = new(handler);

// First, we need a "build id", since it's needed in the Regal API URI.
// We can extract it from any Regal front-end page.
string buildId;
Expand All @@ -260,11 +266,12 @@ private async Task<FilmScheduleModel> GetMoviesForLocationsAsync(
RequestUri = new Uri("https://www.regmovies.com/"),
Method = HttpMethod.Get,
};
var result = await _httpClient.SendAsync(request);
PretendToBeEdge(request.Headers);
var result = await httpClient.SendAsync(request);
if (!result.IsSuccessStatusCode)
{
throw new ApplicationException("Could not retrieve Regal homepage to read " +
"build id.");
"build id");
}
var resultContent = await result.Content.ReadAsStringAsync();
var buildIdMatch = Regex.Match(resultContent,
Expand All @@ -283,7 +290,8 @@ private async Task<FilmScheduleModel> GetMoviesForLocationsAsync(
RequestUri = new Uri(
$"https://www.regmovies.com/_next/data/{buildId}/en/theatres.json")
};
var result = await _httpClient.SendAsync(request);
PretendToBeEdge(request.Headers);
var result = await httpClient.SendAsync(request);
if (!result.IsSuccessStatusCode)
{
throw new ApplicationException("Could not retrieve Regal theater list.");
Expand All @@ -309,17 +317,45 @@ private async Task<FilmScheduleModel> GetMoviesForLocationsAsync(
for (var currentDate = startDate; currentDate <= endDate;
currentDate = currentDate.AddDays(1))
{
var request = new HttpRequestMessage()
_logger.LogDebug("Fetching movies for location {} on {}...", locationCode,
currentDate);
HttpResponseMessage result;
for (int i = 0; true; ++i)
{
var request = new HttpRequestMessage()
{
RequestUri = new Uri("https://www.regmovies.com/api/getShowtimes" +
$"?theatres={locationCode}" +
$"&date={currentDate:MM-dd-yyyy}" +
"&hoCode=&ignoreCache=false&moviesOnly=false")
};
var result = await _httpClient.SendAsync(request);
if (!result.IsSuccessStatusCode)
{
throw new ApplicationException("Could not retrieve Regal showtime list.");
PretendToBeEdge(request.Headers);
result = await httpClient.SendAsync(request);
if (result.IsSuccessStatusCode)
{
break;
}
else
{
var resultStr = await result.Content.ReadAsStringAsync();
if (i < NUM_RETRIES)
{
var delayMs = (int)(Math.Pow(2, i) * 1000);
_logger.LogWarning("Couldn't retrieve Regal showtime list for " +
"location {}. Retrying in {}ms...", locationCode, delayMs);
handler = new HttpClientHandler()
{
CookieContainer = new()
};
httpClient = new(handler);
await Task.Delay(delayMs);
}
else
{
throw new ApplicationException(
"Could not retrieve Regal showtime list.");
}
}
}
var parsedContent = await JsonSerializer.DeserializeAsync<
RegalShowtimesResponse>(await result.Content.ReadAsStreamAsync());
Expand Down Expand Up @@ -370,6 +406,19 @@ private async Task<FilmScheduleModel> GetMoviesForLocationsAsync(
return returnValue;
}

private static void PretendToBeEdge(HttpRequestHeaders headers)
{
headers.Accept.ParseAdd("text/html,application/xhtml+xml,application/xml;q=0.9," +
"image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7");
headers.AcceptLanguage.ParseAdd("en-US,en;q=0.9");
headers.CacheControl = new CacheControlHeaderValue() {
NoCache = true, NoStore = true, MaxAge = TimeSpan.FromMinutes(0) };
headers.Pragma.ParseAdd("no-cache");
headers.Add("Priority", "u=0, i");
headers.UserAgent.ParseAdd("Mozilla/5.0 (Windows NT 10.0; Win64; x64) " +
"AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 Edg/133.0.0.0");
}

/// <summary>
/// Given a day of week and time of day, returns the DateTimeOffset
/// of the next time this occurs.
Expand Down
Loading