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using Core.Contexts;
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using Core.Entities;
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using Models.Enums;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using Serilog;
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using BCrypt.Net;
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using Models.Users;
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using AutoMapper;
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using Microsoft.EntityFrameworkCore;
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namespace Core.Services
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{
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public class UserServiceEF : IUserService
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{
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// DI
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private readonly DatabaseContext _databaseContext;
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private readonly ILogger _logger;
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private readonly IMapper _mapper;
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public UserServiceEF(DatabaseContext context, ILogger logger, IMapper mapper)
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{
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_databaseContext = context;
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_logger = logger;
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_mapper = mapper;
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}
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public User ChangePassword(User user, string newPassword)
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{
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if (newPassword == "")
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{
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throw new InvalidOperationException("Empty password.");
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}
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// Check if the user is tracked by EF
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if (!_databaseContext.Users.Local.Any(u => u.Id == user.Id))
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{
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_logger.Information($"User {user.Username} with Guid {user.Id} is untracked by EF and password change cannot be done.");
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throw new InvalidOperationException("User is untracked by EF.");
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}
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user.Password = BCrypt.Net.BCrypt.HashPassword(newPassword);
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_databaseContext.SaveChanges();
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return user;
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}
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public User? ChangePassword(Guid userId, string newPassword)
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{
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User? user = null;
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user = _databaseContext.Users.First(u => u.Id == userId);
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return ChangePassword(user, newPassword);
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}
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public User? CheckUsernamePassword(string username, string password)
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{
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try
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{
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// Throws exception if user does not exist
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User u = _databaseContext.Users.First(u => u.Username == username);
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if (!BCrypt.Net.BCrypt.Verify(password, u.Password))
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{
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_logger.Information($"Password for user {username} doesn't match.");
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return null;
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}
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return u;
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}
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catch (Exception)
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{
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_logger.Information($"No user with username {username} found.");
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return null;
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}
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}
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public User? CreateUser(string username, string name, string surname, string password, ERole role)
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{
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if (password == "")
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{
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return null;
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}
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// Check if username already used
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if (_databaseContext.Users.Any(u => u.Username == username))
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{
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_logger.Information($"Username {username} is already used. Cannot create new user");
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return null;
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}
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User user = new User()
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{
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Username = username,
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Name = name,
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Surname = surname,
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Password = BCrypt.Net.BCrypt.HashPassword(password),
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Role = role
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};
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_databaseContext.Users.Add(user);
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_databaseContext.SaveChanges();
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return user;
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}
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public User? GetUserByUsername(string username)
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{
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try
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{
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// Throws exception on no user found
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User user = _databaseContext.Users.First(u => u.Username == username);
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return user;
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}
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catch (InvalidOperationException)
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{
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_logger.Warning($"No user with the username {username} found.");
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return null;
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}
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}
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public User? GetUserById(Guid id)
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{
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try
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{
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// Throws exception on no user found
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User user = _databaseContext.Users.First(u => u.Id == id);
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return user;
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}
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catch (InvalidOperationException)
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{
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_logger.Warning($"No user with the GUID {id} found.");
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return null;
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}
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}
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public User UpdateUser(User user, string? username = null, string? name = null, string? surname = null, ERole? role = null)
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{
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// Check if the user is tracked by EF
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if (!_databaseContext.Users.Local.Any(u => u.Id == user.Id))
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{
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_logger.Information($"User {user.Username} with Guid {user.Id} is untracked by EF and update cannot be done.");
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throw new InvalidOperationException("User is untracked by EF.");
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}
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if (username is not null && username != "")
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{
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user.Username = username;
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}
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if (name is not null && name != "")
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{
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user.Name = name;
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}
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if (surname is not null && surname != "")
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{
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user.Surname = surname;
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}
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if (role is not null)
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{
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// We know it is not null
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user.Role = (ERole)role;
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}
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_databaseContext.SaveChanges();
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return user;
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}
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public User? UpdateUser(Guid userId, string? username = null, string? name = null, string? surname = null, ERole? role = null)
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{
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try
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{
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User user = _databaseContext.Users.First(u => u.Id == userId);
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return UpdateUser(user, username, name, surname, role);
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}
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catch (Exception ex)
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{
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return null;
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}
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}
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public UserList GetUsers()
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{
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var userList = new UserList();
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var users = _databaseContext.Users
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.OrderBy(u => u.Surname)
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.ToList();
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foreach (var user in users)
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{
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var userInfo = _mapper.Map<UserInfo>(user);
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userInfo.AssignedDocumentsCount = _databaseContext.Annotations
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.Include(a => a.User)
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.Where(a => !(a is FinalAnnotation))
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.Where(a => a.User == user)
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.Count();
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userList.Users.Add(userInfo);
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}
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return userList;
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}
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public void DeleteUser(Guid userId)
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{
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try
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{
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var user = _databaseContext.Users.Where(u => u.Id == userId).First();
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_databaseContext.Users.Remove(user);
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_databaseContext.SaveChanges();
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}
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catch (Exception)
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{
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throw new InvalidOperationException("User not found");
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}
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}
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}
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}
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