using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using EntityFrameworkCore.Projectables;

namespace Iceshrimp.Backend.Core.Extensions;

public static class StringExtensions
{
	public static bool EqualsInvariant(this string? s1, string? s2) =>
		string.Equals(s1, s2, StringComparison.InvariantCulture);

	public static bool EqualsIgnoreCase(this string? s1, string s2) =>
		string.Equals(s1, s2, StringComparison.InvariantCultureIgnoreCase);

	public static string Truncate(this string target, int maxLength)
	{
		return target[..Math.Min(target.Length, maxLength)];
	}

	public static string ToPunycode(this string target)
	{
		return new IdnMapping().GetAscii(target);
	}

	public static string FromPunycode(this string target)
	{
		return new IdnMapping().GetUnicode(target);
	}
}

[SuppressMessage("ReSharper", "StringCompareToIsCultureSpecific")]
public static class ProjectableStringExtensions
{
	[Projectable]
	public static bool IsLessThan(this string a, string b) => a.CompareTo(b) < 0;

	[Projectable]
	public static bool IsLessOrEqualTo(this string a, string b) => a.CompareTo(b) <= 0;

	[Projectable]
	public static bool IsGreaterThan(this string a, string b) => a.CompareTo(b) > 0;

	[Projectable]
	public static bool IsGreaterOrEqualTo(this string a, string b) => a.CompareTo(b) >= 0;
}