using System;

namespace Umbraco.Cms.Core.Strings
{
    /// <summary>
    /// Specifies the type of a clean string.
    /// </summary>
    /// <remarks>
    /// <para>Specifies its casing, and its encoding.</para>
    /// </remarks>
    [Flags]
    public enum CleanStringType
    {
        // note: you have 32 bits at your disposal
        // 0xffffffff

        // no value

        /// <summary>
        /// No value.
        /// </summary>
        None = 0x00,


        // casing values

        /// <summary>
        /// Flag mask for casing.
        /// </summary>
        CaseMask = PascalCase | CamelCase | Unchanged | LowerCase | UpperCase | UmbracoCase,

        /// <summary>
        /// Pascal casing eg "PascalCase".
        /// </summary>
        PascalCase = 0x01,

        /// <summary>
        /// Camel casing eg "camelCase".
        /// </summary>
        CamelCase = 0x02,

        /// <summary>
        /// Unchanged casing eg "UncHanGed".
        /// </summary>
        Unchanged = 0x04,

        /// <summary>
        /// Lower casing eg "lowercase".
        /// </summary>
        LowerCase = 0x08,

        /// <summary>
        /// Upper casing eg "UPPERCASE".
        /// </summary>
        UpperCase = 0x10,

        /// <summary>
        /// Umbraco "safe alias" case.
        /// </summary>
        /// <remarks>Uppercases the first char of each term except for the first
        /// char of the string, everything else including the first char of the
        /// string is unchanged.</remarks>
        UmbracoCase = 0x20,


        // encoding values

        /// <summary>
        /// Flag mask for encoding.
        /// </summary>
        CodeMask = Utf8 | Ascii | TryAscii,

        // Unicode encoding is obsolete, use Utf8
        //Unicode = 0x0100,

        /// <summary>
        /// Utf8 encoding.
        /// </summary>
        Utf8 = 0x0200,

        /// <summary>
        /// Ascii encoding.
        /// </summary>
        Ascii = 0x0400,

        /// <summary>
        /// Ascii encoding, if possible.
        /// </summary>
        TryAscii = 0x0800,

        // role values

        /// <summary>
        /// Flag mask for role.
        /// </summary>
        RoleMask = UrlSegment | Alias | UnderscoreAlias | FileName | ConvertCase,

        /// <summary>
        ///  Url role.
        /// </summary>
        UrlSegment = 0x010000,

        /// <summary>
        /// Alias role.
        /// </summary>
        Alias = 0x020000,

        /// <summary>
        /// FileName role.
        /// </summary>
        FileName = 0x040000,

        /// <summary>
        /// ConvertCase role.
        /// </summary>
        ConvertCase = 0x080000,

        /// <summary>
        /// UnderscoreAlias role.
        /// </summary>
        /// <remarks>This is Alias + leading underscore.</remarks>
        UnderscoreAlias = 0x100000
    }
}
