Add proxy and .NET 8 support

ConsoleTest/ConsoleTest.csproj

@@ -6,7 +6,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFrameworks>net6.0;net7.0</TargetFrameworks>
+        <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
     </PropertyGroup>
 
 </Project>

ConsoleTest/Program.cs

@@ -40,7 +40,7 @@ async Task PrintTrain() {
 	
 	Console.WriteLine(
 		JsonSerializer.Serialize(
-			await TrainScraper.Scrape(trainNumber),
+			await new TrainScraper().Scrape(trainNumber),
 			new JsonSerializerOptions {
 				PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
 				WriteIndented = true,
@@ -58,7 +58,7 @@ async Task PrintStation() {
 	
 	Console.WriteLine(
 		JsonSerializer.Serialize(
-			await StationScraper.Scrape(stationName),
+			await new StationScraper().Scrape(stationName),
 			new JsonSerializerOptions {
 				PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
 				WriteIndented = true,
@@ -74,7 +74,7 @@ async Task ScrapeItineraries() {
 
 	if (from == null || to == null) return;
 
-	var data = await RouteScraper.Scrape(from, to);
+	var data = await new RouteScraper().Scrape(from, to);
     
 	Console.WriteLine($"{data.Count} itineraries:");
 	Console.WriteLine();

scraper/scraper.csproj

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <Nullable>enable</Nullable>
-        <TargetFrameworks>net6.0;net7.0</TargetFrameworks>
+        <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
     </PropertyGroup>
 
     <ItemGroup>

scraper/src/Scrapers/Route.cs

@@ -16,20 +16,10 @@ using scraper.Models.Itinerary;
 
 namespace InfoferScraper.Scrapers;
 
-public static class RouteScraper {
+public class RouteScraper {
 	private const string BaseUrl = "https://mersultrenurilor.infofer.ro/ro-RO/";
 	private static readonly DateTimeZone BucharestTz = DateTimeZoneProviders.Tzdb["Europe/Bucharest"];
 
-	private static readonly CookieContainer CookieContainer = new();
-
-	private static readonly HttpClient HttpClient = new(new HttpClientHandler {
-		CookieContainer = CookieContainer,
-		UseCookies = true,
-	}) {
-		BaseAddress = new Uri(BaseUrl),
-		DefaultRequestVersion = new Version(2, 0),
-	};
-	
 	private static readonly Regex KmTrainRankNoRegex = new(@"^([0-9]+)\skm\scu\s([A-Z-]+)\s([0-9]+)$");
 	private static readonly Regex OperatorRegex = new(@$"^Operat\sde\s([{Utils.RoLetters}\s]+)$");
 	private static readonly Regex DepArrRegex = new(@"^(Ple|Sos)\s([0-9]+)\s([a-z]+)\.?\s([0-9]+):([0-9]+)$");
@@ -49,7 +39,28 @@ public static class RouteScraper {
 		["dec"] = 12,
 	};
 
-	public static async Task<List<IItinerary>?> Scrape(string from, string to, DateTimeOffset? dateOverride = null) {
+	private readonly CookieContainer cookieContainer = new();
+
+	private readonly HttpClient httpClient;
+
+	public RouteScraper(HttpClientHandler? httpClientHandler = null) {
+		if (httpClientHandler == null) {
+			httpClientHandler = new HttpClientHandler {
+				CookieContainer = cookieContainer,
+				UseCookies = true,
+			};
+		}
+		else {
+			httpClientHandler.CookieContainer = cookieContainer;
+			httpClientHandler.UseCookies = true;
+		}
+		httpClient = new HttpClient(httpClientHandler) {
+			BaseAddress = new Uri(BaseUrl),
+			DefaultRequestVersion = new Version(2, 0),
+		};
+	}
+
+	public async Task<List<IItinerary>?> Scrape(string from, string to, DateTimeOffset? dateOverride = null) {
 		var dateOverrideInstant = dateOverride?.ToInstant().InZone(BucharestTz);
 		dateOverride = dateOverrideInstant?.ToDateTimeOffset();
 		TrainScrapeResult result = new();
@@ -70,7 +81,7 @@ public static class RouteScraper {
 		firstUrl = firstUrl.SetQueryParam("BetweenTrainsMinimumMinutes", "5");
 		firstUrl = firstUrl.SetQueryParam("ChangeStationName", "");
 
-		var firstResponse = await HttpClient.GetStringAsync(firstUrl);
+		var firstResponse = await httpClient.GetStringAsync(firstUrl);
 		var firstDocument = await asContext.OpenAsync(req => req.Content(firstResponse));
 		var firstForm = firstDocument.GetElementById("form-search")!;
 
@@ -80,7 +91,7 @@ public static class RouteScraper {
 			.ToDictionary(elem => elem.Name!, elem => elem.Value);
 
 		var secondUrl = "".AppendPathSegments("Itineraries", "GetItineraries");
-		var secondResponse = await HttpClient.PostAsync(
+		var secondResponse = await httpClient.PostAsync(
 			secondUrl,
 #pragma warning disable CS8620
 			new FormUrlEncodedContent(firstResult)

scraper/src/Scrapers/Station.cs

@@ -14,7 +14,7 @@ using NodaTime;
 using NodaTime.Extensions;
 
 namespace InfoferScraper.Scrapers {
-	public static class StationScraper {
+	public class StationScraper {
 		private static readonly Regex StationInfoRegex = new($@"^([{Utils.RoLetters}.0-9 ]+)\sîn\s([0-9.]+)$");
 
 		private static readonly Regex StoppingTimeRegex = new(
@@ -33,17 +33,28 @@ namespace InfoferScraper.Scrapers {
 
 		private const string BaseUrl = "https://mersultrenurilor.infofer.ro/ro-RO/";
 
-		private static readonly CookieContainer CookieContainer = new();
+		private readonly CookieContainer cookieContainer = new();
 
-		private static readonly HttpClient HttpClient = new(new HttpClientHandler {
+		private readonly HttpClient httpClient;
-			CookieContainer = CookieContainer,
+
+		public StationScraper(HttpClientHandler? httpClientHandler = null) {
+			if (httpClientHandler == null) {
+				httpClientHandler = new HttpClientHandler {
+					CookieContainer = cookieContainer,
 					UseCookies = true,
-		}) {
+				};
+			}
+			else {
+				httpClientHandler.CookieContainer = cookieContainer;
+				httpClientHandler.UseCookies = true;
+			}
+			httpClient = new HttpClient(httpClientHandler) {
 				BaseAddress = new Uri(BaseUrl),
 				DefaultRequestVersion = new Version(2, 0),
 			};
+		}
 
-		public static async Task<IStationScrapeResult> Scrape(string stationName, DateTimeOffset? date = null) {
+		public async Task<IStationScrapeResult> Scrape(string stationName, DateTimeOffset? date = null) {
 			var dateInstant = date?.ToInstant().InZone(BucharestTz);
 			date = dateInstant?.ToDateTimeOffset();
 
@@ -59,7 +70,7 @@ namespace InfoferScraper.Scrapers {
 			if (date != null) {
 				firstUrl = firstUrl.SetQueryParam("Date", $"{date:d.MM.yyyy}");
 			}
-			var firstResponse = await HttpClient.GetStringAsync(firstUrl);
+			var firstResponse = await httpClient.GetStringAsync(firstUrl);
 			var firstDocument = await asContext.OpenAsync(req => req.Content(firstResponse));
 			var firstForm = firstDocument.GetElementById("form-search")!;
 
@@ -69,7 +80,7 @@ namespace InfoferScraper.Scrapers {
 				.ToDictionary(elem => elem.Name!, elem => elem.Value);
 
 			var secondUrl = "".AppendPathSegments("Stations", "StationsResult");
-			var secondResponse = await HttpClient.PostAsync(
+			var secondResponse = await httpClient.PostAsync(
 				secondUrl,
 #pragma warning disable CS8620
 				new FormUrlEncodedContent(firstResult)

scraper/src/Scrapers/Train.cs

@@ -15,7 +15,7 @@ using NodaTime.Extensions;
 using scraper.Exceptions;
 
 namespace InfoferScraper.Scrapers {
-	public static class TrainScraper {
+	public class TrainScraper {
 		private const string BaseUrl = "https://mersultrenurilor.infofer.ro/ro-RO/";
 		private static readonly Regex TrainInfoRegex = new(@"^([A-Z-]+)\s([0-9]+)\sîn\s([0-9.]+)$");
 		private static readonly Regex OperatorRegex = new(@"^Operat\sde\s(.+)$");
@@ -51,16 +51,28 @@ namespace InfoferScraper.Scrapers {
 
 		private static readonly DateTimeZone BucharestTz = DateTimeZoneProviders.Tzdb["Europe/Bucharest"];
 
-		private static readonly CookieContainer CookieContainer = new();
+		private readonly CookieContainer cookieContainer = new();
-		private static readonly HttpClient HttpClient = new(new HttpClientHandler {
+		private readonly HttpClient httpClient; 
-			CookieContainer = CookieContainer,
+
+		public TrainScraper(HttpClientHandler? httpClientHandler = null)
+		{
+			if (httpClientHandler == null) {
+				httpClientHandler = new HttpClientHandler {
+					CookieContainer = cookieContainer,
 					UseCookies = true,
-		}) {
+				};
+			}
+			else {
+				httpClientHandler.CookieContainer = cookieContainer;
+				httpClientHandler.UseCookies = true;
+			}
+			httpClient = new HttpClient(httpClientHandler) {
 				BaseAddress = new Uri(BaseUrl),
 				DefaultRequestVersion = new Version(2, 0),
 			};
+		}
 
-		public static async Task<ITrainScrapeResult?> Scrape(string trainNumber, DateTimeOffset? dateOverride = null) {
+		public async Task<ITrainScrapeResult?> Scrape(string trainNumber, DateTimeOffset? dateOverride = null) {
 			var dateOverrideInstant = dateOverride?.ToInstant().InZone(BucharestTz);
 			dateOverride = dateOverrideInstant?.ToDateTimeOffset();
 			TrainScrapeResult result = new();
@@ -73,7 +85,7 @@ namespace InfoferScraper.Scrapers {
 			if (dateOverride != null) {
 				firstUrl = firstUrl.SetQueryParam("Date", $"{dateOverride:d.MM.yyyy}");
 			}
-			var firstResponse = await HttpClient.GetStringAsync(firstUrl);
+			var firstResponse = await httpClient.GetStringAsync(firstUrl);
 			var firstDocument = await asContext.OpenAsync(req => req.Content(firstResponse));
 			var firstForm = firstDocument.GetElementById("form-search")!;
 
@@ -83,7 +95,7 @@ namespace InfoferScraper.Scrapers {
 				.ToDictionary(elem => elem.Name!, elem => elem.Value);
 
 			var secondUrl = "".AppendPathSegments("Trains", "TrainsResult");
-			var secondResponse = await HttpClient.PostAsync(
+			var secondResponse = await httpClient.PostAsync(
 				secondUrl,
 #pragma warning disable CS8620
 				new FormUrlEncodedContent(firstResult)

server/Models/ProxySettings.cs

@@ -0,0 +1,9 @@
+namespace Server.Models;
+
+public record ProxySettings(string Url, ProxyCredentials? Credentials = null) {
+	public ProxySettings() : this("") { }
+}
+
+public record ProxyCredentials(string Username, string Password) {
+	public ProxyCredentials() : this("", "") { }
+}

server/Services/Implementations/DataManager.cs

@@ -1,12 +1,15 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Net;
+using System.Net.Http;
 using System.Threading.Tasks;
 using InfoferScraper;
 using InfoferScraper.Models.Station;
 using InfoferScraper.Models.Train;
 using Microsoft.Extensions.Logging;
 using scraper.Models.Itinerary;
+using Server.Models;
 using Server.Services.Interfaces;
 using Server.Utils;
 
@@ -18,17 +21,26 @@ namespace Server.Services.Implementations {
 		private NodaTime.IDateTimeZoneProvider TzProvider { get; }
 		private NodaTime.DateTimeZone CfrTimeZone => TzProvider["Europe/Bucharest"];
 
-		public DataManager(NodaTime.IDateTimeZoneProvider tzProvider, IDatabase database, ILogger<DataManager> logger) {
+		public DataManager(NodaTime.IDateTimeZoneProvider tzProvider, IDatabase database, ILogger<DataManager> logger, ProxySettings? proxySettings) {
 			this.TzProvider = tzProvider;
 			this.Database = database;
 			this.Logger = logger;
 
+			HttpClientHandler httpClientHandler = new (){
+				UseProxy = proxySettings != null,
+				Proxy = proxySettings == null ? null : new WebProxy(proxySettings.Url),
+				DefaultProxyCredentials = proxySettings?.Credentials == null ? null : new NetworkCredential(proxySettings.Credentials.Username, proxySettings.Credentials.Password),
+			};
+			InfoferScraper.Scrapers.StationScraper stationScraper = new(httpClientHandler);
+			InfoferScraper.Scrapers.TrainScraper trainScraper = new(httpClientHandler);
+			InfoferScraper.Scrapers.RouteScraper routeScraper = new(httpClientHandler);
+
 			stationCache = new(async (t) => {
 				var (stationName, date) = t;
 				Logger.LogDebug("Fetching station {StationName} for date {Date}", stationName, date);
 				var zonedDate = new NodaTime.LocalDate(date.Year, date.Month, date.Day).AtStartOfDayInZone(CfrTimeZone);
 
-				var station = await InfoferScraper.Scrapers.StationScraper.Scrape(stationName, zonedDate.ToDateTimeOffset());
+				var station = await stationScraper.Scrape(stationName, zonedDate.ToDateTimeOffset());
 				if (station != null) {
 					_ = Task.Run(async () => {
 						var watch = Stopwatch.StartNew();
@@ -44,7 +56,7 @@ namespace Server.Services.Implementations {
 				Logger.LogDebug("Fetching train {TrainNumber} for date {Date}", trainNumber, date);
 				var zonedDate = new NodaTime.LocalDate(date.Year, date.Month, date.Day).AtStartOfDayInZone(CfrTimeZone);
 
-				var train = await InfoferScraper.Scrapers.TrainScraper.Scrape(trainNumber, zonedDate.ToDateTimeOffset());
+				var train = await trainScraper.Scrape(trainNumber, zonedDate.ToDateTimeOffset());
 				if (train != null) {
 					_ = Task.Run(async () => {
 						var watch = Stopwatch.StartNew();
@@ -60,7 +72,7 @@ namespace Server.Services.Implementations {
 				Logger.LogDebug("Fetching itinerary from {From} to {To} for date {Date}", from, to, date);
 				var zonedDate = new NodaTime.LocalDate(date.Year, date.Month, date.Day).AtStartOfDayInZone(CfrTimeZone);
 
-				var itineraries = await InfoferScraper.Scrapers.RouteScraper.Scrape(from, to, zonedDate.ToDateTimeOffset());
+				var itineraries = await routeScraper.Scrape(from, to, zonedDate.ToDateTimeOffset());
 				if (itineraries != null) {
 					_ = Task.Run(async () => {
 						var watch = Stopwatch.StartNew();

server/Startup.cs

@@ -10,6 +10,7 @@ using Microsoft.Extensions.Hosting;
 using Microsoft.OpenApi.Models;
 using MongoDB.Bson.Serialization.Conventions;
 using Newtonsoft.Json.Serialization;
+using Server.Models;
 using Server.Models.Database;
 using Server.Services.Implementations;
 using Server.Services.Interfaces;
@@ -30,12 +31,14 @@ namespace Server {
 				});
 			}
 
+			services.Configure<ProxySettings>(Configuration.GetSection("Proxy"));
 			services.Configure<MongoSettings>(Configuration.GetSection("TrainDataMongo"));
 			var conventionPack = new ConventionPack { new CamelCaseElementNameConvention() };
 			ConventionRegistry.Register("camelCase", conventionPack, _ => true);
 			services.AddSingleton<IDataManager, DataManager>();
 			services.AddSingleton<IDatabase, Database>();
-			services.AddSingleton<NodaTime.IDateTimeZoneProvider>(NodaTime.DateTimeZoneProviders.Tzdb);
+			services.AddSingleton(NodaTime.DateTimeZoneProviders.Tzdb);
+
 			services.AddControllers()
 				.AddNewtonsoftJson(options => {
 					options.SerializerSettings.ContractResolver = new DefaultContractResolver {

server/Utils/Constants.cs

@@ -0,0 +1,7 @@
+using NodaTime;
+
+namespace Server.Utils; 
+
+public static class Constants {
+	public static readonly DateTimeZone BucharestTz = DateTimeZoneProviders.Tzdb["Europe/Bucharest"];
+}

server/server.csproj

@@ -5,7 +5,7 @@
         <AssemblyName>Server</AssemblyName>
         <RootNamespace>Server</RootNamespace>
         <LangVersion>11</LangVersion>
-        <TargetFrameworks>net6.0;net7.0</TargetFrameworks>
+        <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
     </PropertyGroup>
 
     <ItemGroup>