Merge pull request 'Fixed deploy, Added HH Auth on back-end' (#22) from dev into main

Reviewed-on: #22

JOBot.Backend/Controllers/HeadHunterHookController.cs

@@ -0,0 +1,23 @@
+using JOBot.Backend.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace JOBot.Backend.Controllers;
+
+[ApiController]
+[Route("auth")]
+public class HeadHunterHookController(HeadHunterService hhService)
+    : ControllerBase
+{
+
+    [HttpGet]
+    public async Task<IActionResult> Get(int userId, string? error, string code)
+    {
+        var res = await hhService.AuthUser(userId, code, error);
+        return res switch
+        {
+            HeadHunterService.Status.Success =>  Ok("Авторизация завершена успешно. Вернитесь в Telegram для продолжения."),
+            HeadHunterService.Status.UserNotFoundError => NotFound("Пользователь не найден."),
+            _ => BadRequest("Авторизация завершена с ошибкой. Вернитесь в Telegram для продолжения.") //TODO: Add resource
+        };
+    }
+}

JOBot.Backend/DTOs/HeadHunterHook/HeadHunterTokenResponseDto.cs

@@ -0,0 +1,14 @@
+using System.Text.Json.Serialization;
+
+namespace JOBot.Backend.DTOs.HeadHunterHook;
+
+public record HeadHunterTokenResponseDto(
+    [property:JsonPropertyName("access_token")]
+    string AccessToken,
+    [property:JsonPropertyName("expires_in")]
+    int ExpiresIn,
+    [property:JsonPropertyName("refresh_token")]
+    string RefreshToken,
+    [property:JsonPropertyName("token_type")]
+    string TokenType
+    );

JOBot.Backend/Dockerfile

@@ -10,5 +10,4 @@ WORKDIR /app
 COPY --from=build /app .
 EXPOSE 5001
 EXPOSE 5000
-ENV ASPNETCORE_ENVIRONMENT Staging
 ENTRYPOINT ["dotnet", "JOBot.Backend.dll"]

JOBot.Backend/Infrastructure/Config/HeadHunterConfig.cs

@@ -0,0 +1,18 @@
+namespace JOBot.Backend.Infrastructure.Config;
+
+public class HeadHunterConfig
+{
+    public const string SectionName = "HeadHunter";
+    public required HeadHunterLinksConfig Links { get; init; }
+    public required string ClientId { get; init; }
+    public required string Secret { get; init; }
+
+    public class HeadHunterLinksConfig
+    {
+        public required string AuthLink { get; init; }
+        public required string HookDomain { get; init; }
+        public required string HookRoute { get; init; }
+        public required string HeadHunterApiDomain { get; init; }
+        public required string HeadHunterTokenRoute { get; init; }
+    }
+}

JOBot.Backend/JOBot.Backend.csproj

@@ -14,6 +14,7 @@
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 			<PrivateAssets>all</PrivateAssets>
 		</PackageReference>
+		<PackageReference Include="JetBrains.Annotations" Version="2024.3.0" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.4">
 		  <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		  <PrivateAssets>all</PrivateAssets>

JOBot.Backend/Services/HeadHunterService.cs

@@ -0,0 +1,113 @@
+using System.Text.Json;
+using System.Web;
+using JOBot.Backend.DAL.Context;
+using JOBot.Backend.DTOs.HeadHunterHook;
+using JOBot.Backend.Infrastructure.Config;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
+
+namespace JOBot.Backend.Services;
+
+public class HeadHunterService(ILogger<HeadHunterService> logger, IOptions<HeadHunterConfig> config, AppDbContext dbContext)
+{
+    private readonly HeadHunterConfig _config = config.Value;
+
+    /// <summary>
+    /// Generate HeadHunter oauth authorization link
+    /// </summary>
+    /// <param name="userId">Telegram UserId</param>
+    /// <returns>Link for auth</returns>
+    public string GenerateAuthLink(long userId)
+    {
+        
+        return string.Format(_config.Links.AuthLink, [_config.ClientId, GetRedirectUrl(userId)]);
+    }
+
+    public async Task<Status> AuthUser(int userId, string authorizationCode, string? error)
+    {
+        logger.LogInformation($"Authorization for user {userId} in process...");
+        
+        if (!string.IsNullOrEmpty(error))
+        {
+            logger.LogWarning($"User {userId} auth completed with error {error}");
+            return Status.UserAuthRejectedError;
+        }
+
+        using var client = new HttpClient();
+        var form = new Dictionary<string, string>
+        {
+            { "client_id", _config.ClientId },
+            { "client_secret", _config.Secret },
+            { "code", authorizationCode },
+            { "grant_type", "authorization_code" },
+            { "redirect_uri", GetRedirectUrl(userId) }
+        };
+        client.BaseAddress = new UriBuilder(_config.Links.HeadHunterApiDomain)
+        {
+            Port = -1,
+            Scheme = "https"
+        }.Uri;
+        client.DefaultRequestHeaders.UserAgent.ParseAdd("Jobot BackEnd Service");
+
+        using var res = await client.SendAsync(
+            new HttpRequestMessage(
+                HttpMethod.Post,
+                _config.Links.HeadHunterTokenRoute)
+            {
+                Content = new FormUrlEncodedContent(form)
+            });
+
+        if (!res.IsSuccessStatusCode)
+        {
+            logger.LogWarning($"Response of HttpRequest {_config.Links.HeadHunterApiDomain}" +
+                              $"{_config.Links.HeadHunterTokenRoute} has unsuccessful status code {res.StatusCode}");
+            logger.LogWarning($"{res.Content.ReadAsStringAsync().Result}");
+            return Status.HeadHunterAuthRejectedError;
+        }
+        
+        var responseDto = JsonSerializer.Deserialize<HeadHunterTokenResponseDto>(await res.Content.ReadAsStringAsync());
+
+        if (responseDto == null)
+        {
+            logger.LogWarning($"User {userId} auth completed with error " +
+                              $"{nameof(Status.HeadHunterResponseDeserializationFailedError)}");
+            return Status.HeadHunterResponseDeserializationFailedError;
+        }
+        
+        var user = await dbContext.Users.FirstOrDefaultAsync(x => x.UserId == userId);
+
+        if (user == null)
+        {
+            logger.LogWarning($"User {userId} search completed with error {nameof(Status.UserNotFoundError)}");
+            return Status.UserNotFoundError;
+        }
+        
+        user.AccessToken = responseDto.AccessToken;
+        user.RefreshToken = responseDto.RefreshToken;
+        
+        await dbContext.SaveChangesAsync();
+        
+        logger.LogInformation($"User {userId} auth completed!");
+        return Status.Success;
+    }
+
+    private string GetRedirectUrl(long userId)
+    {
+        return new UriBuilder(_config.Links.HookDomain)
+        {
+            Port = -1,
+            Scheme = "https",
+            Path = _config.Links.HookRoute,
+            Query = $"?userId={userId}"
+        }.ToString();
+    }
+
+    public enum Status
+    {
+        UserAuthRejectedError,
+        HeadHunterAuthRejectedError,
+        UserNotFoundError,
+        HeadHunterResponseDeserializationFailedError,
+        Success
+    }
+}

JOBot.Backend/Services/gRPC/UserService.cs

@@ -1,3 +1,4 @@
+using Google.Protobuf.WellKnownTypes;
 using Grpc.Core;
 using JOBot.Backend.DAL.Context;
 using JOBot.Backend.DAL.Models;
@@ -7,7 +8,7 @@ using User = JOBot.Backend.DAL.Models.User;
 
 namespace JOBot.Backend.Services.gRPC;
 
-public class UserService(AppDbContext dbContext) : Proto.User.UserBase
+public class UserService(AppDbContext dbContext, HeadHunterService hhService) : Proto.User.UserBase
 {
     /// <summary>
     /// Create user
@@ -62,6 +63,16 @@ public class UserService(AppDbContext dbContext) : Proto.User.UserBase
         return new AcceptEulaResponse { Success = true };
     }
 
+    public override Task<GetHeadHunterAuthHookResponse> GetHeadHunterAuthHook(
+        GetHeadHunterAuthHookRequest request, 
+        ServerCallContext context)
+    {
+        return Task.Run(() => new GetHeadHunterAuthHookResponse
+        {
+            RegistrationUrl = hhService.GenerateAuthLink(request.UserId)
+        });
+    }
+
     /// <summary>
     /// Throw RPCException if user not found
     /// </summary>

JOBot.Backend/Startup.cs

@@ -1,30 +1,34 @@
 using JOBot.Backend.DAL.Context;
+using JOBot.Backend.Infrastructure.Config;
+using JOBot.Backend.Services;
 using JOBot.Backend.Services.gRPC;
 using Microsoft.EntityFrameworkCore;
 
 namespace JOBot.Backend;
 
-public class Startup
+public class Startup(IConfiguration configuration)
 {
-    public Startup(IConfiguration configuration)
+    private IConfiguration Configuration { get; } = configuration;
-    {
-        Configuration = configuration;
-    }
-
-    public IConfiguration Configuration { get; }
 
     public void ConfigureServices(IServiceCollection services)
     {
         services.AddGrpc(); 
         services.AddGrpcReflection();
+        services.AddControllers();
+        services.AddLogging();
         
         services.AddDbContext<AppDbContext>(options =>
             options.UseNpgsql(Configuration.GetConnectionString("PostgreSQL")));
+
+        services.Configure<HeadHunterConfig>(Configuration.GetSection(HeadHunterConfig.SectionName));
+
+        services.AddScoped<HeadHunterService>();
     }
 
     public void Configure(WebApplication app, IWebHostEnvironment env)
     {
         app.MapGrpcReflectionService().AllowAnonymous();
         app.MapGrpcService<UserService>();
+        app.MapControllers();
     }
 }

JOBot.Backend/appsettings.json

@@ -9,6 +9,17 @@
     "ConnectionStrings": {
         "PostgreSQL": "Host=postgres;Port=5432;Database=jobot;Username=postgres;Password=LocalDbPass"
     },
+    "HeadHunter": {
+        "Links": {
+            "AuthLink": "https://hh.ru/oauth/authorize?response_type=code&client_id={0}&redirect_uri={1}",
+            "HookDomain": "jobot.lisoveliy.su",
+            "HookRoute": "/auth",
+            "HeadHunterApiDomain": "api.hh.ru",
+            "HeadHunterTokenRoute": "/token"
+        },
+        "ClientId": "",
+        "Secret": ""
+    },
     "Kestrel": {
         "Endpoints": {
             "gRPC": {

JOBot.TClient/Commands/Buttons/EulaAgreementButtonCommand.cs

@@ -12,6 +12,7 @@ public class EulaAgreementButtonCommand(PrepareUserState prepareUserState) : IAu
 {
     public async Task ExecuteAsync(Update update, GetUserResponse user, CancellationToken ct)
     {
-        await prepareUserState.AcceptEula(update, ct);
+        if (!user.Eula)
+            await prepareUserState.AcceptEula(user, update, ct);
     }
 }

JOBot.TClient/JOBot.TClient.csproj

@@ -57,4 +57,10 @@
         </EmbeddedResource>
     </ItemGroup>
 
+    <ItemGroup>
+      <Content Include="appsettings.json">
+        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      </Content>
+    </ItemGroup>
+
 </Project>

JOBot.TClient/Services/MenuService.cs

@@ -6,12 +6,10 @@ namespace JOBot.TClient.Services;
 
 public class MenuService(ITelegramBotClient bot)
 {
-    public Task RenderMenu(Update update, CancellationToken ct = default)
+    public async Task RenderMenu(Update update, CancellationToken ct = default)
     {
         ArgumentNullException.ThrowIfNull(update.Message?.From);
         
-        bot.SendMessage(update.Message.From.Id,"PrepareUser stage is done.", cancellationToken: ct);
+        await bot.SendMessage(update.Message.From.Id,"PrepareUser stage is done.", cancellationToken: ct);
-        
-        return Task.CompletedTask;
     }
 }

JOBot.TClient/Services/PrepareUserService.cs

@@ -83,4 +83,19 @@ public class PrepareUserService(ITelegramBotClient bot, User.UserClient userClie
         if (!result.Success)
             throw new FallbackException(TextResource.FallbackMessage, update.Message, _bot);
     }
+
+    public async Task Auth(Update update, CancellationToken ct = default)
+    {
+        ArgumentNullException.ThrowIfNull(update.Message?.From);
+        
+        var url = await _userClient.GetHeadHunterAuthHookAsync(new GetHeadHunterAuthHookRequest()
+        {
+            UserId = update.Message.From.Id
+        });
+
+        await _bot.SendMessage(
+            update.Message.From.Id, 
+            string.Format(TextResource.AskForAuth, [url.RegistrationUrl]), 
+            cancellationToken: ct);
+    }
 }

JOBot.TClient/Statements/PrepareUserState.cs

@@ -1,3 +1,4 @@
+using JOBot.Proto;
 using JOBot.TClient.Services;
 using Telegram.Bot.Types;
 using User = JOBot.Proto.User;
@@ -21,27 +22,34 @@ public class PrepareUserState(PrepareUserService prepareUserService, MenuService
             return; //interrupt while eula isn't accepted
         }
         
-        await OnUserEulaValidStage(update, ct);
+        await OnUserEulaValidStage(user, update, ct);
     }
 
     /// <summary>
     /// Signal for accepted eula
     /// </summary>
+    /// <param name="user"></param>
     /// <param name="update"></param>
     /// <param name="ct"></param>
-    public async Task AcceptEula(Update update, CancellationToken ct = default)
+    public async Task AcceptEula(GetUserResponse user, Update update, CancellationToken ct = default)
     {
         await prepareUserService.AcceptEula(update, ct: ct);
-        await OnUserEulaValidStage(update, ct);
+        await OnUserEulaValidStage(user, update, ct);
     }
 
     /// <summary>
     /// Continue prepare stage
     /// </summary>
+    /// <param name="user"></param>
     /// <param name="update"></param>
     /// <param name="ct"></param>
-    private async Task OnUserEulaValidStage(Update update, CancellationToken ct = default)
+    private async Task OnUserEulaValidStage(GetUserResponse user, Update update, CancellationToken ct = default)
     {
+        if (!user.IsLogged)
+        {
+            await prepareUserService.Auth(update, ct);
+            return;
+        }
         await menuService.RenderMenu(update, ct); //boilerplate
     }
 }

JOBot.TClient/TextResource.Designer.cs

@@ -59,6 +59,15 @@ namespace JOBot.TClient {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Авторизируйтесь на сайте HeadHunter для получения доступа к резюме и вакансиям {0}.
+        /// </summary>
+        public static string AskForAuth {
+            get {
+                return ResourceManager.GetString("AskForAuth", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Команда не найдена, попробуйте что-то другое.
         /// </summary>

JOBot.TClient/TextResource.resx

@@ -34,4 +34,7 @@ https://hh.ru/account/agreement?backurl=%2Faccount%2Fsignup%3Fbackurl%3D%252F%26
     <data name="Info" xml:space="preserve">
         <value>Это бот для упрощения поиска работы на HH.ru</value>
     </data>
+    <data name="AskForAuth" xml:space="preserve">
+        <value>Авторизируйтесь на сайте HeadHunter для получения доступа к резюме и вакансиям {0}</value>
+    </data>
 </root>

Proto/user.proto

@@ -1,14 +1,16 @@
 syntax = "proto3";
 option csharp_namespace = "JOBot.Proto";
 
+import "google/protobuf/wrappers.proto";
+import "google/protobuf/empty.proto";
+
 service User {
 	rpc Register (RegisterRequest) returns (RegisterResponse);
 	rpc GetUser (GetUserRequest) returns (GetUserResponse);
 	rpc AcceptEula (AcceptEulaRequest) returns (AcceptEulaResponse);
+	rpc GetHeadHunterAuthHook(GetHeadHunterAuthHookRequest) returns (GetHeadHunterAuthHookResponse);
 }
 
-import "google/protobuf/wrappers.proto";
-
 message RegisterRequest{
 	int64 user_id = 1;
 	google.protobuf.StringValue username = 2;
@@ -38,3 +40,11 @@ message AcceptEulaRequest {
 message AcceptEulaResponse{
 	bool success = 1;
 }
+
+message GetHeadHunterAuthHookRequest{
+	int64 user_id = 1;
+}
+
+message GetHeadHunterAuthHookResponse{
+	string registration_url = 1;
+}

compose.dev.yml

@@ -20,6 +20,7 @@ services:
     depends_on:
       - postgres
     ports:
+      - "5000:5000"
       - "5001:5001"
     networks:
       - jobot

compose.yml

@@ -17,6 +17,8 @@ services:
       dockerfile: JOBot.Backend/Dockerfile
     depends_on:
       - postgres
+    ports:
+      - "5000:5000"
     networks:
       - jobot