add user service and accounts controller

API/API.csproj

@@ -19,4 +19,8 @@
       </Content>
     </ItemGroup>
 
+    <ItemGroup>
+      <ProjectReference Include="..\Services\Services.csproj" />
+    </ItemGroup>
+
 </Project>

API/Controllers/AccountsController.cs

@@ -0,0 +1,83 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Mvc;
+using Model;
+using Services;
+
+namespace API.Controllers;
+
+public class AccountsController(UserService service) : ControllerBase
+{
+    private static string _defaultProfilePicture =
+        "https://cdn.pixabay.com/photo/2015/10/05/22/37/blank-profile-picture-973460_960_720.png";
+
+    [HttpGet("/admin/list-users")]
+    public async Task<IEnumerable<User>> ListUsers(
+        [Range(0, int.MaxValue, ErrorMessage = "Only positive number allowed")]
+        int start,
+        [Range(0, int.MaxValue, ErrorMessage = "Only positive number allowed")]
+        int n,
+        [MaxLength(256, ErrorMessage = "Search string is too wide")]
+        string? search
+    )
+    {
+        var result = search == null
+            ? await service.ListUsers(search!)
+            : await service.ListUsers();
+
+        return result.Skip(start).Take(n);
+    }
+
+    [HttpGet("/admin/user/{id:int}")]
+    public async Task<IActionResult> GetUser(
+        [Range(0, int.MaxValue, ErrorMessage = "Only positive number allowed")]
+        int id
+    )
+    {
+        var result = await service.GetUser(id);
+        if (result == null)
+            return NotFound();
+
+        return Ok(result);
+    }
+
+    [HttpPost("/admin/user")]
+    public Task<User> AddUser(
+        [MaxLength(256, ErrorMessage = "Username is too wide")]
+        string username,
+        [Range(4, 256, ErrorMessage = "Password must length be between 4 and 256")]
+        string password,
+        [MaxLength(256, ErrorMessage = "Email is too wide")] [EmailAddress]
+        string email,
+        bool isAdmin = false
+    )
+    {
+        return service.CreateUser(username, email, password, _defaultProfilePicture, isAdmin);
+    }
+
+    [HttpDelete("/admin/user")]
+    public async void RemoveUsers(int[] identifiers)
+    {
+        await service.RemoveUsers(identifiers);
+    }
+
+    [HttpPut("/admin/user/{id:int}")]
+    public async Task<IActionResult> UpdateUser(
+        int id,
+        [MaxLength(256, ErrorMessage = "Username is too wide")]
+        string username,
+        [MaxLength(256, ErrorMessage = "Email is too wide")] [EmailAddress]
+        string email,
+        bool isAdmin
+    )
+    {
+        try
+        {
+            await service.UpdateUser(new User(id, username, email, _defaultProfilePicture, isAdmin));
+            return Ok();
+        }
+        catch (ServiceException e)
+        {
+            return BadRequest(e.Failures);
+        }
+    }
+}

AppContext/AppContext.cs

@@ -1,4 +1,6 @@
-using AppContext.Entities;
+using System.Security.Cryptography;
+using AppContext.Entities;
+using Microsoft.AspNetCore.Cryptography.KeyDerivation;
 using Microsoft.EntityFrameworkCore;
 
 namespace AppContext;
@@ -17,4 +19,27 @@ public class AppContext(DbContextOptions<AppContext> options) : DbContext(option
     )
     {
     }
+
+    protected override void OnModelCreating(ModelBuilder builder)
+    {
+        base.OnModelCreating(builder);
+        builder.Entity<UserEntity>()
+            .Property(e => e.Password)
+            .HasConversion(
+                v => HashString(v),
+                v => v
+            );
+    }
+
+    private static string HashString(string str)
+    {
+        byte[] salt = RandomNumberGenerator.GetBytes(128 / 8);
+        return Convert.ToBase64String(KeyDerivation.Pbkdf2(
+            password: str,
+            salt,
+            prf: KeyDerivationPrf.HMACSHA256,
+            iterationCount: 50000,
+            numBytesRequested: 256 / 8
+        ));
+    }
 }

AppContext/AppContext.csproj

@@ -8,6 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
+      <PackageReference Include="Microsoft.AspNetCore.Cryptography.KeyDerivation" Version="8.0.0" />
       <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.0" />
       <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.0">
         <PrivateAssets>all</PrivateAssets>

AppContext/Entities/UserEntity.cs

@@ -4,12 +4,13 @@ namespace AppContext.Entities;
 
 public class UserEntity
 {
-    [Key]
+    [Key] public int Id { get; set; }
-    public int Id { get; set; }
+
+    public required string Password { get; set; }
     public required string Name { get; set; }
     public required string Email { get; set; }
     public required string ProfilePicture { get; set; }
+    public required bool IsAdmin { get; set; }
 
     public ICollection<TacticEntity> Tactics { get; set; } = new List<TacticEntity>();
-    
 }

Converters/Converters.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\AppContext\AppContext.csproj" />
+      <ProjectReference Include="..\Model\Model.csproj" />
+    </ItemGroup>
+
+</Project>

Converters/ModelToEntities.cs

@@ -0,0 +1,17 @@
+using AppContext.Entities;
+using Model;
+
+namespace Converters;
+
+public static class EntitiesToModels
+{
+    public static User ToModel(this UserEntity entity)
+    {
+        return new User(entity.Id, entity.Name, entity.Email, entity.ProfilePicture, entity.IsAdmin);
+    }
+
+    // public static Team ToModel(this TeamEntity entity)
+    // {
+    //     
+    // }
+}

DbServices/DbServices.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\AppContext\AppContext.csproj" />
+      <ProjectReference Include="..\Converters\Converters.csproj" />
+      <ProjectReference Include="..\Services\Services.csproj" />
+    </ItemGroup>
+
+</Project>

DbServices/DbUserService.cs

@@ -0,0 +1,72 @@
+using AppContext.Entities;
+using Converters;
+using Microsoft.EntityFrameworkCore;
+using Model;
+using Services;
+using Services.Failures;
+
+
+namespace DbServices;
+
+public class DbUserService(AppContext.AppContext context) : UserService
+{
+    public Task<IEnumerable<User>> ListUsers(string nameNeedle)
+    {
+        return Task.FromResult(
+            context.Users
+                .Where(n => n.Name.ToLower().Contains(nameNeedle.ToLower()))
+                .AsEnumerable()
+                .Select(e => e.ToModel())
+        );
+    }
+
+    public Task<IEnumerable<User>> ListUsers()
+    {
+        return Task.FromResult(
+            context.Users
+                .AsEnumerable()
+                .Select(e => e.ToModel())
+        );
+    }
+
+    public async Task<User?> GetUser(int id)
+    {
+        return (await context.Users.FirstOrDefaultAsync(e => e.Id == id))?.ToModel();
+    }
+
+    public async Task<User> CreateUser(string username, string email, string password, string profilePicture,
+        bool isAdmin)
+    {
+        var userEntity = new UserEntity
+        {
+            Name = username,
+            Email = email,
+            Password = password,
+            ProfilePicture = profilePicture,
+            IsAdmin = isAdmin
+        };
+
+        await context.Users.AddAsync(userEntity);
+        await context.SaveChangesAsync();
+
+        return userEntity.ToModel();
+    }
+
+    public async Task<bool> RemoveUsers(params int[] identifiers)
+    {
+        return await context.Users.Where(u => identifiers.Contains(u.Id)).ExecuteDeleteAsync() > 0;
+    }
+
+    public async Task UpdateUser(User user)
+    {
+        var entity = await context.Users.FirstOrDefaultAsync(e => e.Id == user.Id);
+        if (entity == null)
+            throw new ServiceException(Failure.NotFound("User not found"));
+
+        entity.ProfilePicture = user.ProfilePicture;
+        entity.Name = user.Name;
+        entity.Email = user.Email;
+        entity.Id = user.Id;
+        await context.SaveChangesAsync();
+    }
+}

Model/User.cs

@@ -0,0 +1,3 @@
+namespace Model;
+
+public record User(int Id, string Name, string Email, string ProfilePicture, bool IsAdmin);

Services/Failures/Failure.cs

@@ -0,0 +1,9 @@
+namespace Services.Failures;
+
+public record Failure(string Name, string Message)
+{
+    public static Failure NotFound(string message)
+    {
+        return new("not found", message);
+    }
+}

Services/ServiceException.cs

@@ -0,0 +1,13 @@
+using Services.Failures;
+
+namespace Services;
+
+public class ServiceException : Exception
+{
+    public List<Failure> Failures { get; init; }
+
+    public ServiceException(params Failure[] failures)
+    {
+        Failures = new List<Failure>(failures);
+    }
+}

Services/Services.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Model\Model.csproj" />
+    </ItemGroup>
+
+</Project>

Services/UserService.cs

@@ -0,0 +1,19 @@
+using Model;
+
+namespace Services;
+
+public interface UserService
+{
+
+    Task<IEnumerable<User>> ListUsers(string nameNeedle);
+    Task<IEnumerable<User>> ListUsers();
+
+    Task<User?> GetUser(int id);
+
+    Task<User> CreateUser(string username, string email, string password, string profilePicture, bool isAdmin);
+
+    Task<bool> RemoveUsers(params int[] identifiers);
+
+    Task UpdateUser(User user);
+
+}

StubContext/StubAppContext.cs

@@ -28,6 +28,8 @@ public class StubAppContext(DbContextOptions<AppContext> options) : AppContext(o
                 Id = ++i,
                 Email = $"{name}@mail.com",
                 Name = name,
+                Password = "123456",
+                IsAdmin = true,
                 ProfilePicture =
                     "https://cdn.pixabay.com/photo/2015/10/05/22/37/blank-profile-picture-973460_960_720.png",
             }));

WebAPI.sln

@@ -10,6 +10,12 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StubContext", "StubContext\
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "API", "API\API.csproj", "{B22FA426-EFF2-42E9-96BB-78F1C65E37CC}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Services", "Services\Services.csproj", "{5C342359-9DE6-4B47-9DD9-4F519B58448B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DbServices", "DbServices\DbServices.csproj", "{EBBF55CF-97CA-4E7D-8603-5FF546093B95}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Converters", "Converters\Converters.csproj", "{465819A9-7158-4612-AC57-ED2C7A0F243E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -36,5 +42,17 @@ Global
 		{B22FA426-EFF2-42E9-96BB-78F1C65E37CC}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{B22FA426-EFF2-42E9-96BB-78F1C65E37CC}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{B22FA426-EFF2-42E9-96BB-78F1C65E37CC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5C342359-9DE6-4B47-9DD9-4F519B58448B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5C342359-9DE6-4B47-9DD9-4F519B58448B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5C342359-9DE6-4B47-9DD9-4F519B58448B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5C342359-9DE6-4B47-9DD9-4F519B58448B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{EBBF55CF-97CA-4E7D-8603-5FF546093B95}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EBBF55CF-97CA-4E7D-8603-5FF546093B95}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EBBF55CF-97CA-4E7D-8603-5FF546093B95}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EBBF55CF-97CA-4E7D-8603-5FF546093B95}.Release|Any CPU.Build.0 = Release|Any CPU
+		{465819A9-7158-4612-AC57-ED2C7A0F243E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{465819A9-7158-4612-AC57-ED2C7A0F243E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{465819A9-7158-4612-AC57-ED2C7A0F243E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{465819A9-7158-4612-AC57-ED2C7A0F243E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal