API_SQLuedo/API_SQLuedo/DbDataManager/Service/UserDataService.cs

using DbContextLib;
using Entities;
using Microsoft.EntityFrameworkCore;
using Shared;

namespace DbDataManager.Service;

public class UserDataService : IUserService<UserEntity>
{
    private UserDbContext DbContext { get; set; }

    public UserDataService(UserDbContext context)
    {
        DbContext = context;
        context.Database.EnsureCreated();
    }

    public UserEntity GetUserById(int id)
    {
        var userEntity = DbContext.Users.FirstOrDefault(u => u.Id == id);
        if (userEntity == null)
        {
            throw new ArgumentException("Impossible de trouver l'utilisateur", nameof(id));
        }

        return userEntity;
    }

    public UserEntity GetUserByUsername(string username)
    {
        var userEntity = DbContext.Users.FirstOrDefault(u => u.Username == username);
        if (userEntity == null)
        {
            throw new ArgumentException("Impossible de trouver l'utilisateur", nameof(username));
        }

        return userEntity;
    }

    public IEnumerable<UserEntity> GetUsers(int page, int number)
    {
        return DbContext.Users.Skip((page - 1) * number).Take(number).ToList()
            .Select(u => u);
    }

    public bool DeleteUser(int id)
    {
        var userEntity = DbContext.Users.FirstOrDefault(u => u.Id == id);
        if (userEntity == null)
        {
            return false;
        }

        DbContext.Users.Remove(userEntity);
        DbContext.SaveChangesAsync();
        return true;
    }

    public UserEntity UpdateUser(int id, UserEntity user)
    {
        var updatingUser = DbContext.Users.FirstOrDefault(u => u.Id == id);
        if (updatingUser == null)
        {
            throw new ArgumentException("Impossible de trouver l'utilisateur", nameof(id));
        }

        updatingUser.Username = user.Username;
        updatingUser.Password = user.Password;
        updatingUser.Email = user.Email;
        updatingUser.IsAdmin = user.IsAdmin;
        // Permet d'indiquer en Db que l'entité a été modifiée.
        DbContext.Entry(updatingUser).State = EntityState.Modified;
        DbContext.SaveChangesAsync();
        return updatingUser;
    }

    public UserEntity CreateUser(string username, string password, string email, bool isAdmin)
    {
        var newUserEntity = new UserEntity()
        {
            Username = username,
            Password = password,
            Email = email,
            IsAdmin = isAdmin
        };
        DbContext.Users.Add(newUserEntity);
        DbContext.SaveChangesAsync();
        return newUserEntity;
    }
}