/// <summary>
/// Construtor.
/// </summary>
/// <param name="securables">Lista de todos os itens do sistema que tem permissão associada.</param>
/// <param name="permissions">Lista de todas as permissões possíveis.</param>
/// <param name="charset">Modos possíveis do texto puro que representa o mapa de permissões.</param>
public PermissionMap(
IEnumerable <TSecurable> securables,
IEnumerable <TPermission> permissions,
PermissionMapCharset charset) :
this(securables, permissions, charset, null)
{
}
/// <summary>
/// Construtor privado.
/// </summary>
/// <param name="securables">Lista de todos os itens do sistema que tem permissão associada.</param>
/// <param name="permissions">Lista de todas as permissões possíveis.</param>
/// <param name="charset">Modos possíveis do texto puro que representa o mapa de permissões.</param>
/// <param name="charsetValue">Texto customizado para o mapa de permissões.</param>
private PermissionMap(
IEnumerable <TSecurable> securables,
IEnumerable <TPermission> permissions,
PermissionMapCharset charset,
string?charsetValue)
{
Permissions = permissions
.OrderBy(a => $"{a}")
.ToArray();
Securables = securables
.OrderBy(a => $"{a}")
.ToArray();
Charset = charset;
var unicodeUpToBytesInSize = 1;
switch (charset)
{
case PermissionMapCharset.Binary:
CharsetValue = "01".ToCharArray();
break;
case PermissionMapCharset.Octal:
CharsetValue = "01234567".ToCharArray();
break;
case PermissionMapCharset.Decimal:
CharsetValue = "0123456789".ToCharArray();
break;
case PermissionMapCharset.Hexadecimal:
CharsetValue = "0123456789abcdef".ToCharArray();
break;
case PermissionMapCharset.Letters:
CharsetValue = "abcdefghijklmnopqrstuvwxyz".ToCharArray();
break;
case PermissionMapCharset.NumbersAndLetters:
CharsetValue = "0123456789abcdefghijklmnopqrstuvwxyz".ToCharArray();
break;
case PermissionMapCharset.LettersCaseSensitive:
CharsetValue = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray();
break;
case PermissionMapCharset.NumbersAndLettersCaseSensitive:
CharsetValue = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray();
break;
case PermissionMapCharset.VisibleAscii:
CharsetValue = Encoding
.ASCII
.GetAllEncodedStrings()
.Where(a =>
a.Value.Code > 32 &&
a.Value.Code < 127)
.Select(a => a.Value.Text[0])
.ToArray();
break;
case PermissionMapCharset.UnicodeUpTo3BytesInSize:
unicodeUpToBytesInSize = 3;
goto case PermissionMapCharset.UnicodeUpTo1BytesInSize;
case PermissionMapCharset.UnicodeUpTo2BytesInSize:
unicodeUpToBytesInSize = 2;
goto case PermissionMapCharset.UnicodeUpTo1BytesInSize;
case PermissionMapCharset.UnicodeUpTo1BytesInSize:
CharsetValue = Encoding
.UTF8
.GetAllEncodedStrings()
.Where(a =>
a.Value.Code >= 32 &&
a.Value.Size >= 1 &&
a.Value.Size <= unicodeUpToBytesInSize)
.Select(a => a.Value.Text[0])
.ToArray();
break;
case PermissionMapCharset.Custom:
if (charsetValue == null || charsetValue.Length < 2)
{
throw new ArgumentNullException(nameof(charset));
}
var charsetValueArray = charsetValue.ToCharArray();
if (charsetValueArray.Distinct().Count() != charsetValue.Length)
{
throw new ArgumentException($"Duplications found in the {nameof(charset)}.");
}
CharsetValue = charsetValueArray;
break;
default:
throw new ArgumentOutOfRangeException(nameof(charset), charset, null);
}
var maxValueBinary = new string('1', ChunkBinarySize);
var maxValueInteger = Convert.ToUInt64(maxValueBinary, 2);
var maxValue = maxValueInteger.ConvertToNumericBase(CharsetValue);
_chunkSize = maxValue.Length;
_mapSize = maxValue.Length * (int)System.Math.Ceiling(
Permissions.Length * Securables.Length / (double)maxValueBinary.Length);
}
