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using System;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using Microsoft.AspNetCore.Identity;
using System.Collections.Generic;
namespace Data.Models.Classes
{
[Table("Users")]
public class User : IdentityUser<int>
{
private string _firstName;
private string _lastName;
private string _profilePicture;
[Required]
[Range(3, 50)]
[Display(Name = "Username")]
public override string UserName
{
get => base.UserName;
set
{
ValidateString("Username", 3, 50, value, true);
base.UserName = value;
}
}
[Required]
[Range(3, 30)]
public string FirstName
{
get => this._firstName;
set
{
ValidateString("FirstName", 3, 30, value, false);
this._firstName = value;
}
}
[Required]
[Range(3, 30)]
public string LastName
{
get => this._lastName;
set
{
ValidateString("LastName", 3, 30, value, false);
this._lastName = value;
}
}
public string ProfilePicture
{
get => this._profilePicture;
set
{
ValidateURL(value);
this._profilePicture = value;
}
}
public string Role { get; set; }
// public List<User> Friends { get; set; }
/// <summary>
/// Throws an argument exception if the given value is not composed only of letters, and if specified, also of digits.
/// Does nothing otherwise.
/// </summary>
private static void ValidateString(string name, int minLength, int maxLength, string value, bool canBeDigit)
{
if (value.Length < minLength || value.Length > maxLength)
throw new ArgumentException($"{name} length cannot be less than {minLength} and more than {maxLength}.");
foreach (char character in value) // more efficient than Linq
{
if (!Char.IsLetter(character))
if (!(Char.IsDigit(character) && canBeDigit))
throw new ArgumentException($"{name} contains invalid characters.");
}
}
/// <summary>
/// Throws an exception if the absolute url isn't valid.
/// Does nothing otherwise.
/// </summary>
private static void ValidateURL(string urlValue)
{
// Throws an error is URL is invalid
Uri validatedUri;
Uri.TryCreate(urlValue, UriKind.Absolute, out validatedUri);
}
}
}
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