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Add MentionUtility

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Oliver Booth 2022-07-21 11:28:37 +01:00
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using System.Globalization;
namespace X10D.DSharpPlus;
/// <summary>
/// Provides methods for encoding and decoding Discord mention strings.
/// </summary>
/// <remarks>
/// The implementations in this class are designed to resemble <c>MentionUtils</c> as provided by Discord.NET. The source is
/// available
/// <a href="https://github.com/discord-net/Discord.Net/blob/dev/src/Discord.Net.Core/Utils/MentionUtils.cs">
/// here
/// </a>.
/// </remarks>
public static class MentionUtility
{
/// <summary>
/// Returns a channel mention string built from the specified channel ID.
/// </summary>
/// <param name="id">The ID of the channel to mention.</param>
/// <returns>A channel mention string in the format <c>&lt;#123&gt;</c>.</returns>
public static string MentionChannel(decimal id)
{
return $"<#{id:N0}>";
}
/// <summary>
/// Returns a channel mention string built from the specified channel ID.
/// </summary>
/// <param name="id">The ID of the channel to mention.</param>
/// <returns>A channel mention string in the format <c>&lt;#123&gt;</c>.</returns>
[CLSCompliant(false)]
public static string MentionChannel(ulong id)
{
return $"<#{id}>";
}
/// <summary>
/// Returns a role mention string built from the specified channel ID.
/// </summary>
/// <param name="id">The ID of the role to mention.</param>
/// <returns>A role mention string in the format <c>&lt;@&amp;123&gt;</c>.</returns>
public static string MentionRole(decimal id)
{
return $"<@&{id:N0}>";
}
/// <summary>
/// Returns a role mention string built from the specified role ID.
/// </summary>
/// <param name="id">The ID of the role to mention.</param>
/// <returns>A role mention string in the format <c>&lt;@&amp;123&gt;</c>.</returns>
[CLSCompliant(false)]
public static string MentionRole(ulong id)
{
return $"<@&{id}>";
}
/// <summary>
/// Returns a user mention string built from the specified user ID.
/// </summary>
/// <param name="id">The ID of the user to mention.</param>
/// <returns>A user mention string in the format <c>&lt;@123&gt;</c>.</returns>
[CLSCompliant(false)]
public static string MentionUser(decimal id)
{
return MentionUser(id, false);
}
/// <summary>
/// Returns a user mention string built from the specified user ID.
/// </summary>
/// <param name="id">The ID of the user to mention.</param>
/// <param name="nickname">
/// <see langword="true" /> if the mention string should account for nicknames; otherwise, <see langword="false" />.
/// </param>
/// <returns>
/// A user mention string in the format <c>&lt;@!123&gt;</c> if <paramref name="nickname" /> is <see langword="true" />,
/// or in the format <c>&lt;@123&gt;</c> if <paramref name="nickname" /> is <see langword="false" />.
/// </returns>
[CLSCompliant(false)]
public static string MentionUser(decimal id, bool nickname)
{
return nickname ? $"<@!{id:N0}>" : $"<@{id:N0}>";
}
/// <summary>
/// Returns a user mention string built from the specified user ID.
/// </summary>
/// <param name="id">The ID of the user to mention.</param>
/// <returns>A user mention string in the format <c>&lt;@123&gt;</c>.</returns>
[CLSCompliant(false)]
public static string MentionUser(ulong id)
{
return MentionUser(id, false);
}
/// <summary>
/// Returns a user mention string built from the specified user ID.
/// </summary>
/// <param name="id">The ID of the user to mention.</param>
/// <param name="nickname">
/// <see langword="true" /> if the mention string should account for nicknames; otherwise, <see langword="false" />.
/// </param>
/// <returns>
/// A user mention string in the format <c>&lt;@!123&gt;</c> if <paramref name="nickname" /> is <see langword="true" />,
/// or in the format <c>&lt;@123&gt;</c> if <paramref name="nickname" /> is <see langword="false" />.
/// </returns>
[CLSCompliant(false)]
public static string MentionUser(ulong id, bool nickname)
{
return nickname ? $"<@!{id}>" : $"<@{id}>";
}
/// <summary>
/// Parses a provided channel mention string to a decimal value representing the channel ID. A return value indicates
/// whether the parse succeeded.
/// </summary>
/// <param name="value">A string containing a mention string to parse, in the format <c>&lt;#123&gt;</c>.</param>
/// <param name="result">
/// When this method returns, contains the decimal value representing the channel ID contained within
/// <paramref name="value" />, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the
/// <paramref name="value" /> parameter is <see langword="null" /> or <see cref="string.Empty" />, is not of the correct
/// format, or represents a number less than <see cref="ulong.MinValue" /> or greater than <see cref="ulong.MaxValue" />.
/// </param>
/// <returns><see langword="true" /> if the parse was successful; otherwise, <see langword="false" />.</returns>
public static bool TryParseChannel(string? value, out decimal result)
{
result = 0;
if (string.IsNullOrWhiteSpace(value))
{
return false;
}
if (value.Length < 3 || value[0] != '<' || value[1] != '#' || value[^1] != '>')
{
return false;
}
value = value.Substring(2, value.Length - 3); // <#123>
if (!ulong.TryParse(value, NumberStyles.None, CultureInfo.InvariantCulture, out ulong actual))
{
return false;
}
result = actual;
return true;
}
/// <summary>
/// Parses a provided channel mention string to a 64-bit unsigned integer representing the channel ID. A return value
/// indicates whether the parse succeeded.
/// </summary>
/// <param name="value">A string containing a mention string to parse, in the format <c>&lt;#123&gt;</c>.</param>
/// <param name="result">
/// When this method returns, contains the 64-bit unsigned integer value representing the channel ID contained within
/// <paramref name="value" />, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the
/// <paramref name="value" /> parameter is <see langword="null" /> or <see cref="string.Empty" />, is not of the correct
/// format, or represents a number less than <see cref="ulong.MinValue" /> or greater than <see cref="ulong.MaxValue" />.
/// </param>
/// <returns><see langword="true" /> if the parse was successful; otherwise, <see langword="false" />.</returns>
[CLSCompliant(false)]
public static bool TryParseChannel(string? value, out ulong result)
{
result = 0;
if (string.IsNullOrWhiteSpace(value))
{
return false;
}
if (value.Length < 3 || value[0] != '<' || value[1] != '#' || value[^1] != '>')
{
return false;
}
value = value.Substring(2, value.Length - 3); // <#123>
return ulong.TryParse(value, NumberStyles.None, CultureInfo.InvariantCulture, out result);
}
/// <summary>
/// Parses a provided role mention string to a decimal value representing the role ID. A return value indicates whether
/// the parse succeeded.
/// </summary>
/// <param name="value">A string containing a mention string to parse, in the format <c>&lt;@&amp;123&gt;</c>.</param>
/// <param name="result">
/// When this method returns, contains the decimal value representing the role ID contained within
/// <paramref name="value" />, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the
/// <paramref name="value" /> parameter is <see langword="null" /> or <see cref="string.Empty" />, is not of the correct
/// format, or represents a number less than <see cref="ulong.MinValue" /> or greater than <see cref="ulong.MaxValue" />.
/// </param>
/// <returns><see langword="true" /> if the parse was successful; otherwise, <see langword="false" />.</returns>
public static bool TryParseRole(string? value, out decimal result)
{
result = 0;
if (string.IsNullOrWhiteSpace(value))
{
return false;
}
if (value.Length < 4 || value[0] != '<' || value[1] != '@' || value[2] != '&' || value[^1] != '>')
{
return false;
}
value = value.Substring(3, value.Length - 4); // <@&123>
if (!ulong.TryParse(value, NumberStyles.None, CultureInfo.InvariantCulture, out ulong actual))
{
return false;
}
result = actual;
return true;
}
/// <summary>
/// Parses a provided role mention string to a 64-bit unsigned integer representing the role ID. A return value indicates
/// whether the parse succeeded.
/// </summary>
/// <param name="value">A string containing a mention string to parse, in the format <c>&lt;@&amp;123&gt;</c>.</param>
/// <param name="result">
/// When this method returns, contains the 64-bit unsigned integer value representing the role ID contained within
/// <paramref name="value" />, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the
/// <paramref name="value" /> parameter is <see langword="null" /> or <see cref="string.Empty" />, is not of the correct
/// format, or represents a number less than <see cref="ulong.MinValue" /> or greater than <see cref="ulong.MaxValue" />.
/// </param>
/// <returns><see langword="true" /> if the parse was successful; otherwise, <see langword="false" />.</returns>
[CLSCompliant(false)]
public static bool TryParseRole(string? value, out ulong result)
{
result = 0;
if (string.IsNullOrWhiteSpace(value))
{
return false;
}
if (value.Length < 4 || value[0] != '<' || value[1] != '@' || value[2] != '&' || value[^1] != '>')
{
return false;
}
value = value.Substring(3, value.Length - 4); // <@&123>
return ulong.TryParse(value, NumberStyles.None, CultureInfo.InvariantCulture, out result);
}
/// <summary>
/// Parses a provided user mention string to a decimal value representing the user ID. A return value indicates whether
/// the parse succeeded.
/// </summary>
/// <param name="value">
/// A string containing a mention string to parse, in the format <c>&lt;@123&gt;</c> or <c>&lt;@!123&gt;</c>.
/// </param>
/// <param name="result">
/// When this method returns, contains the decimal value representing the user ID contained within
/// <paramref name="value" />, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the
/// <paramref name="value" /> parameter is <see langword="null" /> or <see cref="string.Empty" />, is not of the correct
/// format, or represents a number less than <see cref="ulong.MinValue" /> or greater than <see cref="ulong.MaxValue" />.
/// </param>
/// <returns><see langword="true" /> if the parse was successful; otherwise, <see langword="false" />.</returns>
public static bool TryParseUser(string? value, out decimal result)
{
result = 0;
if (string.IsNullOrWhiteSpace(value))
{
return false;
}
if (value.Length < 3 || value[0] != '<' || value[1] != '@' || value[^1] != '>')
{
return false;
}
if (value.Length >= 4 && value[2] == '!')
{
value = value.Substring(3, value.Length - 4); // <@!123>
}
else
{
value = value.Substring(2, value.Length - 3); // <@123>
}
if (!ulong.TryParse(value, NumberStyles.None, CultureInfo.InvariantCulture, out ulong actual))
{
return false;
}
result = actual;
return true;
}
/// <summary>
/// Parses a provided user mention string to a 64-bit unsigned integer representing the user ID. A return value indicates
/// whether the parse succeeded.
/// </summary>
/// <param name="value">
/// A string containing a mention string to parse, in the format <c>&lt;@123&gt;</c> or <c>&lt;@!123&gt;</c>.
/// </param>
/// <param name="result">
/// When this method returns, contains the 64-bit unsigned integer value representing the user ID contained within
/// <paramref name="value" />, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the
/// <paramref name="value" /> parameter is <see langword="null" /> or <see cref="string.Empty" />, is not of the correct
/// format, or represents a number less than <see cref="ulong.MinValue" /> or greater than <see cref="ulong.MaxValue" />.
/// </param>
/// <returns><see langword="true" /> if the parse was successful; otherwise, <see langword="false" />.</returns>
[CLSCompliant(false)]
public static bool TryParseUser(string? value, out ulong result)
{
result = 0;
if (string.IsNullOrWhiteSpace(value))
{
return false;
}
if (value.Length < 3 || value[0] != '<' || value[1] != '@' || value[^1] != '>')
{
return false;
}
if (value.Length >= 4 && value[2] == '!')
{
value = value.Substring(3, value.Length - 4); // <@!123>
}
else
{
value = value.Substring(2, value.Length - 3); // <@123>
}
return ulong.TryParse(value, NumberStyles.None, CultureInfo.InvariantCulture, out result);
}
}