using Serilog;
using Spectre.Console;
using System.IO.Compression;
using System.Text.RegularExpressions;
using System.Security.Cryptography;
namespace EdgeInstaller;

public static partial class EdgeInstall
{
    private static string GetPackagesString(string filepath)
    {
        using (var CompressedStream = File.Open(filepath, FileMode.Open))
        using (var decompressor = new GZipStream(CompressedStream, CompressionMode.Decompress))
        using (var streamReader = new StreamReader(decompressor))
        {
            return streamReader.ReadToEnd();
        }
    }

    /*
     * HACK: Spectre.Console uses fixed regex to detect terminal capabilites
     * This function tests for known working terminals that are currently not
     * detected by AnsiDetector
     */
    private static void BUGFIX_ansiDetection()
    {
        Regex[] regexes = {
            new("foot")
        };
        AnsiConsole.Profile.Capabilities.Ansi = true;
        AnsiConsole.Profile.Capabilities.Legacy = false;
    }

    static bool ValidateChecksum(FileInfo file, string checksum)
    {
        using (FileStream fs = file.Open(FileMode.Open))
        {
            return ValidateChecksum(fs, checksum);
        }
    }

    static bool ValidateChecksum(Stream stream, string checksum)
    {
        stream.Position = 0;
        using (SHA256 mySHA256 = SHA256.Create())
        {
            byte[] hashValue = mySHA256.ComputeHash(stream);
            if (hashValue is null)
            {
                throw new NullReferenceException("Hash be null??");
            }
            Log.Debug("Computed hash = {hash}", hashValue);
            byte[] storedHash = Convert.FromHexString(checksum);
            Log.Debug("Stored Hash = {hash}", storedHash);

            Log.Debug("Compare result = {result}", hashValue.SequenceEqual(storedHash));
            return (storedHash.SequenceEqual(hashValue));
        }
    }


    static Version GetCurrentVersion()
    {
		// To get the current version we need to execute the installed microsoft edge.
		// Before doing this we need to make sure we can execute microsoft edge.
	

        return new("0.0.0.0-0");
    }
}