using System;

namespace ln.http;

[Flags]
public enum HttpVersion
{
    None = 0,
    HTTP10 = (1<<0),     // HTTP/1.0
    HTTP11 = (1<<1),     // HTTP/1.1
    HTTP2 = (1<<2),      // HTTP/2.0
    
    ALL = HTTP10 | HTTP11 | HTTP2
}

public static class HttpVersionSupport
{

    public static string ToString(HttpVersion httpVersion)
    {
        switch (httpVersion)
        {
            case HttpVersion.None:
                return "None";
            case HttpVersion.ALL:
                return "ALL";
            case HttpVersion.HTTP2:
                return "HTTP/2";
            case HttpVersion.HTTP10:
                return "HTTP/1.0";
            case HttpVersion.HTTP11:
                return "HTTP/1.1";
            default:
                throw new NotSupportedException();
        }
    }

    public static HttpVersion Parse(string httpVersion)
    {
        switch (httpVersion)
        {
            case "HTTP/1.0":
                return HttpVersion.HTTP10;
            case "HTTP/1.1":
                return HttpVersion.HTTP10;
            default:
                return HttpVersion.None;
        }
    }
}