amulets.linq

<Query Kind="Program">
  <Namespace>System.Security.Cryptography</Namespace>
  <Namespace>LINQPad.Controls</Namespace>
  <AutoDumpHeading>true</AutoDumpHeading>
</Query>

DumpContainer results = new();
DumpContainer notice = new();
DumpContainer byteCount = new();
StringBuilder sb = new();

List<string> rarities = [
	"common",
	"uncommon",
	"rare",
	"epic",
	"legendary",
	"mythic",
	"???"
];

void Main()
{
	"Type your poem here".Dump();
	Update(new TextArea("DON'T WORRY", 64, Update).Dump());
	results.Dump();
	byteCount.Dump();
	notice.Dump();

	void Update(TextArea area)
	{
		var bytes = Encoding.UTF8.GetBytes(area.Text.Replace("\r", ""));
		var hashBytes = SHA256.HashData(bytes);
		sb.Clear();
		for (var i = 0; i < hashBytes.Length; i++)
			sb.Append(hashBytes[i].ToString("x2"));
		var hash = sb.ToString();
		results.Content = hash;
		
		var eights = Regex.Matches(hash, "8{4,}");
		
		if (bytes.Length > 64)
			notice.Content = $"Too long to be an amulet";
		else if (eights.Count >= 1)
		{
			var rarity = eights.First().Length - 4;
			notice.Content = $"You found an amulet of {rarities[rarity]} rarity!";
		}
		else notice.Content = "";
		byteCount.Content = $"{bytes.Length} byte poem";
	}
}