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using System.Globalization;
using System.Text;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Caching.Memory;
using Costasdev.VigoTransitApi;
using System.Text.Json;
using Costasdev.Busurbano.Backend.Types;
using Costasdev.VigoTransitApi.Types;
namespace Costasdev.Busurbano.Backend;
[ApiController]
[Route("api/vigo")]
public class VigoController : ControllerBase
{
private readonly VigoTransitApiClient _api;
private readonly IMemoryCache _cache;
private readonly HttpClient _httpClient;
public VigoController(HttpClient http, IMemoryCache cache)
{
_api = new VigoTransitApiClient(http);
_cache = cache;
_httpClient = http;
}
[HttpGet("GetStopEstimates")]
public async Task<IActionResult> Run(
[FromQuery] int id
)
{
try
{
var response = await _api.GetStopEstimates(id);
// Return only the estimates array, not the stop metadata
return new OkObjectResult(response.Estimates);
}
catch (InvalidOperationException)
{
return BadRequest("Stop not found");
}
}
[HttpGet("GetStopTimetable")]
public async Task<IActionResult> GetStopTimetable(
[FromQuery] int stopId,
[FromQuery] string date
)
{
// Validate date format
if (!DateTime.TryParseExact(date, "yyyy-MM-dd", null, DateTimeStyles.None, out _))
{
return BadRequest("Invalid date format. Please use yyyy-MM-dd format.");
}
// Create cache key
var cacheKey = $"timetable_{date}_{stopId}";
// Try to get from cache first
if (_cache.TryGetValue(cacheKey, out var cachedData))
{
Response.Headers.Append("App-CacheUsage", "HIT");
return new OkObjectResult(cachedData);
}
try
{
var timetableData = await LoadTimetable(stopId.ToString(), date);
// Cache the data for 12 hours
var cacheOptions = new MemoryCacheEntryOptions
{
AbsoluteExpirationRelativeToNow = TimeSpan.FromHours(12),
SlidingExpiration = TimeSpan.FromHours(6), // Refresh cache if accessed within 6 hours of expiry
Priority = CacheItemPriority.Normal
};
_cache.Set(cacheKey, timetableData, cacheOptions);
Response.Headers.Append("App-CacheUsage", "MISS");
return new OkObjectResult(timetableData);
}
catch (HttpRequestException ex)
{
return StatusCode((int?)ex.StatusCode ?? 500, $"Error fetching timetable data: {ex.Message}");
}
catch (JsonException ex)
{
return StatusCode(500, $"Error parsing timetable data: {ex.Message}");
}
catch (Exception ex)
{
return StatusCode(500, $"Unexpected error: {ex.Message}");
}
}
/*private StopEstimate[] LoadDebugEstimates()
{
var file = @"C:\Users\ariel\Desktop\GetStopEstimates.json";
var contents = System.IO.File.ReadAllText(file);
return JsonSerializer.Deserialize<StopEstimate[]>(contents, JsonSerializerOptions.Web)!;
}
private ScheduledStop[] LoadDebugTimetable()
{
var file = @"C:\Users\ariel\Desktop\GetStopTimetable.json";
var contents = System.IO.File.ReadAllText(file);
return JsonSerializer.Deserialize<ScheduledStop[]>(contents)!;
}*/
[HttpGet("GetStopArrivalsMerged")]
public async Task<IActionResult> GetStopArrivalsMerged(
[FromQuery] int stopId
)
{
StringBuilder outputBuffer = new();
var now = DateTime.Now.AddSeconds(60 - DateTime.Now.Second);
var realtimeTask = _api.GetStopEstimates(stopId);
var timetableTask = LoadTimetable(stopId.ToString(), now.ToString("yyyy-MM-dd"));
Task.WaitAll(realtimeTask, timetableTask);
var realTimeEstimates = realtimeTask.Result.Estimates;
var timetable = timetableTask.Result;
/*var now = DateTime.Today.AddHours(17).AddMinutes(59);
var realTimeEstimates = LoadDebugEstimates();
var timetable = LoadDebugTimetable();*/
foreach (var estimate in realTimeEstimates)
{
outputBuffer.AppendLine($"Parsing estimate with line={estimate.Line}, route={estimate.Route} and minutes={estimate.Minutes} - Arrives at {now.AddMinutes(estimate.Minutes):HH:mm}");
var fullArrivalTime = now.AddMinutes(estimate.Minutes);
var possibleCirculations = timetable
.Where(c => c.Line.Name.Trim() == estimate.Line.Trim() && c.Trip.Headsign.Trim() == estimate.Route.Trim())
.OrderBy(c => c.DepartureDateTime())
.ToArray();
outputBuffer.AppendLine($"Found {possibleCirculations.Length} potential circulations");
ScheduledStop? closestCirculation = null;
int closestCirculationTime = int.MaxValue;
foreach (var circulation in possibleCirculations)
{
var diffBetweenScheduleAndTrip = (int)Math.Round((fullArrivalTime - circulation.DepartureDateTime()).TotalMinutes);
var diffBetweenNowAndSchedule = (int)(fullArrivalTime - now).TotalMinutes;
var tolerance = Math.Max(2, diffBetweenNowAndSchedule * 0.15); // Positive amount of minutes
if (diffBetweenScheduleAndTrip <= -tolerance)
{
break;
}
if (diffBetweenScheduleAndTrip < closestCirculationTime)
{
closestCirculation = circulation;
closestCirculationTime = diffBetweenScheduleAndTrip;
}
}
if (closestCirculation == null)
{
outputBuffer.AppendLine("**No circulation matched. List of all of them:**");
foreach (var circulation in possibleCirculations)
{
// Circulation A 03LP000_008003_16 stopping at 05/11/2025 22:06:00 (diff: -03:29:59.2644092)
outputBuffer.AppendLine($"Circulation {circulation.Trip.Id} stopping at {circulation.DepartureDateTime()} (diff: {fullArrivalTime - circulation.DepartureDateTime():HH:mm})");
}
outputBuffer.AppendLine();
continue;
}
if (closestCirculationTime > 0)
{
outputBuffer.Append($"Closest circulation is {closestCirculation.Trip.Id} and arriving {closestCirculationTime} minutes LATE");
}
else if (closestCirculationTime == 0)
{
outputBuffer.Append($"Closest circulation is {closestCirculation.Trip.Id} and arriving ON TIME");
}
else
{
outputBuffer.Append($"Closest circulation is {closestCirculation.Trip.Id} and arriving {Math.Abs(closestCirculationTime)} minutes EARLY");
}
outputBuffer.AppendLine(
$" -- Circulation expected at {closestCirculation.DepartureDateTime():HH:mm)}");
outputBuffer.AppendLine();
}
return Ok(outputBuffer.ToString());
}
private async Task<List<ScheduledStop>> LoadTimetable(string stopId, string dateString)
{
var url = $"https://www.costas.dev/static-storage/vitrasa_svc/stops/{dateString}/{stopId}.json";
var response = await _httpClient.GetAsync(url);
response.EnsureSuccessStatusCode();
var jsonContent = await response.Content.ReadAsStringAsync();
return JsonSerializer.Deserialize<List<ScheduledStop>>(jsonContent) ?? [];
}
}
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