/// <summary>
/// Get the lowest role of this user in relation to the hierarchy of the Discord server.
/// </summary>
/// <param name="discordUser"></param>
/// <param name="predicate"></param>
/// <returns>The lowest <see cref="DiscordRole"/> of the user in relation to the role of the Discord server.</returns>
public static DiscordRole GetLowestRole(this DiscordUser discordUser, Func <DiscordRole, bool> predicate = null)
{
discordUser.IsNotNull();
var memberRolesOrded = discordUser.ToDiscordMember().Roles.OrderByDescending(r => r.Position);
return(predicate is null?memberRolesOrded.LastOrDefault() : memberRolesOrded.LastOrDefault(predicate));
}
/// <summary>
/// Returns a <see langword="bool"/> that says whether the member can be banned from the server. <c>Attention!</c> can be banned by the <c>bot</c>.
/// </summary>
/// <param name="discordUser"></param>
/// <returns>A <see langword="bool"/>.</returns>
public static bool CanBeBanned(this DiscordUser discordUser)
{
discordUser.IsNotNull();
var discordMember = discordUser.ToDiscordMember();
return(!discordMember.IsOwner && !discordMember.IsAdministrator() && discordMember.GetHighestRole().IsBelow(TarsBase._discordClient.CurrentUser.GetHighestRole()));
}
/// <summary>
/// Convert <see cref="DiscordUser"/> to <see cref="DiscordMember"/>.
/// </summary>
/// <param name="discordUser"></param>
/// <returns>The <see cref="DiscordMember"/>.</returns>
/// <exception cref="ArgumentNullException"></exception>
public static DiscordMember ToDiscordMember(this DiscordUser discordUser)
{
discordUser.IsNotNull();
try
{
return((DiscordMember)discordUser);
}
catch (InvalidCastException)
{
return(discordUser.Id.ToDiscordMember());
}
}
/// <summary>
/// Returns a <see langword="bool"/> that says whether the user is a server administrator.
/// </summary>
/// <param name="discordUser"></param>
/// <returns>A <see langword="bool"/>.</returns>
public static bool IsAdministrator(this DiscordUser discordUser)
{
discordUser.IsNotNull();
return(discordUser.ToDiscordMember().Roles.Any(r => r.Permissions.HasPermission(Permissions.Administrator)));
}
