Add user

src/Nocr.Users.Api.Contracts/Users/Dto/CreateUserRequest.cs

@@ -1,4 +1,4 @@
-namespace Nocr.Users.Api.Contracts.Users;
+namespace Nocr.Users.Api.Contracts.Users.Dto;
 
 public sealed class CreateUserRequest
 {
@@ -7,4 +7,6 @@ public sealed class CreateUserRequest
     public string? Email { get; set; }
     
     public long? TelegramId { get; set; }
+    
+    public string? TelegramUsername { get; set; }
 }

src/Nocr.Users.Api.Contracts/Users/IUsersController.cs

@@ -1,3 +1,4 @@
+using Nocr.Users.Api.Contracts.Users.Dto;
 using RestEase;
 
 namespace Nocr.Users.Api.Contracts.Users;
@@ -7,4 +8,7 @@ public interface IUsersController
 {
     [Post]
     Task<long> Create([Body]  CreateUserRequest request, CancellationToken cancellationToken = default);
+    
+    [Get(WebRoutes.Users.ById)]
+    Task<UserData?> GetById([Path] long id, CancellationToken cancellationToken = default);
 }

src/Nocr.Users.Api.Contracts/Users/UserData.cs

@@ -0,0 +1,8 @@
+namespace Nocr.Users.Api.Contracts.Users;
+
+public sealed class UserData
+{
+    public long Id { get; set; }
+    
+    public string Username { get; set; }
+}

src/Nocr.Users.Api.Contracts/WebRoutes.cs

@@ -7,5 +7,7 @@ public static class WebRoutes
     public static class Users
     {
         public const string Path = BasePath + "/" + "users";
+
+        public const string ById = "{id}";
     }
 }

src/Nocr.Users.AppServices/Nocr.Users.AppServices.csproj

@@ -9,6 +9,7 @@
     </ItemGroup>
     
     <ItemGroup>
+      <ProjectReference Include="..\Nocr.Users.Api.Contracts\Nocr.Users.Api.Contracts.csproj" />
       <ProjectReference Include="..\Nocr.Users.Core\Nocr.Users.Core.csproj" />
     </ItemGroup>
 

src/Nocr.Users.AppServices/ServiceCollectionExtensions.cs

@@ -1,4 +1,5 @@
 using Microsoft.Extensions.DependencyInjection;
+using Nocr.Users.AppServices.Users;
 
 namespace Nocr.Users.AppServices;
 
@@ -10,6 +11,8 @@ public static class ServiceCollectionExtensions
             throw new ArgumentNullException(nameof(services));
 
         // Add registrations here
+        services.AddScoped<IUsersRepository, InMemoryUsersRepository>();
+        services.AddScoped<IUsersService, UsersService>();
 
         return services;
     }

src/Nocr.Users.AppServices/Users/IUsersRepository.cs

@@ -0,0 +1,8 @@
+namespace Nocr.Users.AppServices.Users;
+
+public interface IUsersRepository
+{
+    Task<long> Create(User user, CancellationToken cancellationToken = default);
+
+    Task<User?> GetUserById(long id, CancellationToken cancellationToken = default);
+}

src/Nocr.Users.AppServices/Users/IUsersService.cs

@@ -0,0 +1,11 @@
+using Nocr.Users.Api.Contracts.Users;
+
+namespace Nocr.Users.AppServices.Users;
+
+public interface IUsersService
+{
+    Task<long> Create(string username, string? telegramUsername, string? email, long? telegramId,
+        CancellationToken cancellationToken = default);
+
+    Task<UserData?> GetUserById(long id, CancellationToken cancellationToken = default);
+}

src/Nocr.Users.AppServices/Users/InMemoryUsersRepository.cs

@@ -0,0 +1,29 @@
+namespace Nocr.Users.AppServices.Users;
+
+public sealed class InMemoryUsersRepository : IUsersRepository
+{
+    private long _id = 0;
+
+    private long _userIdentityId = 0;
+    
+    private readonly List<User> _users = new();
+
+    public Task<long> Create(User user, CancellationToken cancellationToken = default)
+    {
+        var id = Interlocked.Increment(ref _id);
+        user.Id = id;
+        _users.Add(user);
+
+        foreach (var identity in user.Identities)
+        {
+            identity.Id = Interlocked.Increment(ref _userIdentityId);
+        }
+        
+        return Task.FromResult(id);
+    }
+
+    public Task<User?> GetUserById(long id, CancellationToken cancellationToken = default)
+    {
+        return Task.FromResult(_users.FirstOrDefault(x => x.Id == id));
+    }
+}

src/Nocr.Users.AppServices/Users/User.cs

@@ -6,18 +6,30 @@ public sealed class User
 
     public string Username { get; private set; }
 
-    private User(string username)
+    private List<UserIdentity> _identities = new List<UserIdentity>();
+
+    public IReadOnlyCollection<UserIdentity> Identities => _identities;
+
+    private User(string username, params UserIdentity[] identities)
     {
         Username = username;
+        
+        // TODO: Check that there is no repeating identity types
+        _identities.AddRange(identities);
     }
 
-    public static User Initialize(string username)
+    public static User Initialize(string username, params UserIdentity[] identities)
     {
         if (string.IsNullOrWhiteSpace(username))
         {
             throw new ArgumentNullException(nameof(username));
         }
 
-        return new User(username);
+        if (username.Length is < 5 or > 32)
+        {
+            throw new ArgumentException("Username length should be between 5 and 32 symbols", username);
+        }
+
+        return new User(username, identities);
     }
 }

src/Nocr.Users.AppServices/Users/UserIdentity.cs

@@ -0,0 +1,34 @@
+namespace Nocr.Users.AppServices.Users;
+
+public sealed class UserIdentity
+{
+    public long Id { get; set; }
+    
+    public string Identity { get; private set; }
+    
+    public UserIdentityType IdentityType { get; private set; }
+
+    private UserIdentity(string identity, UserIdentityType identityType)
+    {
+        if (string.IsNullOrWhiteSpace(identity))
+            throw new ArgumentNullException(nameof(identity));
+        
+        Identity = identity;
+        IdentityType = identityType;
+    }
+    
+    public static UserIdentity TelegramId(string identity)
+    {
+        return new UserIdentity(identity, UserIdentityType.TelegramId);
+    }
+    
+    public static UserIdentity TelegramUsername(string identity)
+    {
+        return new UserIdentity(identity, UserIdentityType.TelegramUsername);
+    }
+    
+    public static UserIdentity Email(string identity)
+    {
+        return new UserIdentity(identity, UserIdentityType.TelegramUsername);
+    }
+}

src/Nocr.Users.AppServices/Users/UserIdentityType.cs

@@ -0,0 +1,8 @@
+namespace Nocr.Users.AppServices.Users;
+
+public enum UserIdentityType
+{
+    Email = 1,
+    TelegramId = 2,
+    TelegramUsername = 3,
+}

src/Nocr.Users.AppServices/Users/UsersService.cs

@@ -0,0 +1,46 @@
+using Nocr.Users.Api.Contracts.Users;
+
+namespace Nocr.Users.AppServices.Users;
+
+public sealed class UsersService : IUsersService
+{
+    private readonly IUsersRepository _repository;
+
+    public UsersService(IUsersRepository repository)
+    {
+        _repository = repository ?? throw new ArgumentNullException(nameof(repository));
+    }
+
+    public async Task<long> Create(string username, string? telegramUsername, string? email, long? telegramId,
+        CancellationToken cancellationToken = default)
+    {
+        var identities = new List<UserIdentity>();
+
+        if (!string.IsNullOrWhiteSpace(email))
+            identities.Add(UserIdentity.Email(email));
+        
+        if (!string.IsNullOrWhiteSpace(telegramUsername))
+            identities.Add(UserIdentity.TelegramUsername(telegramUsername));
+        
+        if (telegramId.HasValue)
+            identities.Add(UserIdentity.TelegramId(telegramId.Value.ToString()));
+        
+        // TODO: ToArray = грубо
+        var user = User.Initialize(username, identities.ToArray());
+        
+        return await _repository.Create(user, cancellationToken);
+    }
+
+    public async Task<UserData?> GetUserById(long id, CancellationToken cancellationToken = default)
+    {
+        var user = await _repository.GetUserById(id, cancellationToken);
+        if (user == null)
+            return null;
+
+        return new UserData
+        {
+            Id = user.Id,
+            Username = user.Username,
+        };
+    }
+}

src/Nocr.Users.Host/Controllers/UsersController.cs

@@ -0,0 +1,30 @@
+using Microsoft.AspNetCore.Mvc;
+using Nocr.Users.Api.Contracts;
+using Nocr.Users.Api.Contracts.Users;
+using Nocr.Users.Api.Contracts.Users.Dto;
+using Nocr.Users.AppServices.Users;
+
+namespace Nocr.Users.Host;
+
+[ApiController]
+[Route(WebRoutes.Users.Path)]
+public class UsersController : ControllerBase
+{
+    private readonly IUsersService _usersService;
+
+    public UsersController(IUsersService usersService)
+    {
+        _usersService = usersService ?? throw new ArgumentNullException(nameof(usersService));
+    }
+
+    [HttpPost]
+    public Task<long> Create([FromBody] CreateUserRequest request, CancellationToken cancellationToken = default)
+    {
+        return _usersService.Create(request.Username, request.TelegramUsername, request.Email, request.TelegramId, cancellationToken);
+    }
+    [HttpGet("{id}")]
+    public Task<UserData?> GetById([FromRoute] long id, CancellationToken cancellationToken = default)
+    {
+        return _usersService.GetUserById(id, cancellationToken);
+    }
+}

src/Nocr.Users.Host/Nocr.Users.Host.csproj

@@ -12,7 +12,8 @@
     </ItemGroup>
     
     <ItemGroup>
-        <ProjectReference Include="..\Nocr.Users.AppServices\Nocr.Users.AppServices.csproj"/>
+        <ProjectReference Include="..\Nocr.Users.Api.Contracts\Nocr.Users.Api.Contracts.csproj" />
+        <ProjectReference Include="..\Nocr.Users.AppServices\Nocr.Users.AppServices.csproj" />
     </ItemGroup>
 
     <ItemGroup>