* Maintain DataModel for User, Role, Function and UserRole

OrdersManagementDataModel/Services/UserService.cs

@@ -0,0 +1,88 @@
+using AutoMapper;
+using Microsoft.EntityFrameworkCore;
+using OrdersManagementDataModel.Dtos;
+using OrdersManagementDataModel.Entities;
+
+namespace OrdersManagementDataModel.Services;
+
+public class UserService(OrdersManagementDbContext context, IMapper mapper) : IUserService
+{
+    public async Task<IEnumerable<UserDto>> GetUsers()
+    {
+        IList<UserDto> users = await context.Users.Select(x => mapper.Map<UserDto>(x)).ToListAsync();
+
+        return users;
+    }
+    
+    public async Task<UserDto?> GetUserById(Guid id)
+    {
+        UserDto? user = await context.Users.Where(x => x.RowPointer == id)
+            .Select(x => mapper.Map<UserDto>(x)).FirstOrDefaultAsync();
+        
+        return user;
+    }
+    
+    public async Task<UserDto?> GetUserByUsername(string username)
+    {
+        UserDto? user = await context.Users.Where(x => x.Login == username)
+            .Select(x => mapper.Map<UserDto>(x)).FirstOrDefaultAsync();
+        
+        return user;
+    }
+    
+    public async Task<int> AddUser(UserDto userDto)
+    {
+        User user = new User
+        {
+            Login = userDto.Login,
+            PasswordHash = userDto.PasswordHash,
+            IsTemporaryPassword = true,
+            IsActive = true,
+            Email = userDto.Email,
+            RowPointer = Guid.NewGuid(),
+            CreatedDate = DateTime.Now,
+            ActiveFrom = DateTime.Now,
+            FirstName = userDto.FirstName,
+            LastName = userDto.LastName
+        };
+        
+        context.Users.Add(user);
+        return await context.SaveChangesAsync();
+    }
+    
+    public async Task<int> UpdateUser(UserDto userDto)
+    {
+        User user = mapper.Map<User>(userDto);
+        context.Users.Update(user);
+        return await context.SaveChangesAsync();
+    }
+    
+    public async Task<int> DeleteUser(Guid id)
+    {
+        User? user = await context.Users.Where(x => x.RowPointer == id).FirstOrDefaultAsync() ?? null;
+        
+        if (user == null) return 0;
+        
+        context.Users.Remove(user);
+        return await context.SaveChangesAsync();
+    }
+
+    public async Task<IList<UserRoleDto>> GetUserRoles(Guid userId)
+    {
+        List<UserRoleDto> userRoles = await context.Users
+            .Where(x => x.RowPointer == userId)
+            .SelectMany(x => x.UserRoles)
+            .Select(x => mapper.Map<UserRoleDto>(x))
+            .ToListAsync();
+
+        return userRoles;
+    }
+
+    public async Task<UserDto?> GetUserByLoginAndPassword(string login, string password)
+    {
+        UserDto? user = await context.Users.Where(x => x.Login == login && x.PasswordHash == password)
+            .Select(x => mapper.Map<UserDto>(x)).FirstOrDefaultAsync();
+        
+        return user;
+    }
+}