using InnovEnergy.SysTools.Utils;

namespace InnovEnergy.SysTools.Remote;

public readonly struct RemoteCommand
{
    public SshHost Host { get; }
    public SysPath Path { get; }
    public String  Args { get; }

    public RemoteCommand(RemotePath remotePath, String args = "")
    {
        var (host, path) = remotePath;

        Args = args;
        Host = host;
        Path = path;
    }

    public RemoteCommand(SshHost host, SysPath path, String args = "")
    {
        Args = args;
        Host = host;
        Path = path;
    }

    public static RemoteCommand FromRemotePath(RemotePath remotePath) => new RemoteCommand(remotePath);


    // TODO
    public RemoteCommand Opt1(String option)
    {
        return new RemoteCommand(Host, Path, $"{Args} -{option}");
    }

    public RemoteCommand Opt1(String option, Object value, String separator = " ")
    {
        return new RemoteCommand(Host, Path, $"{Args} -{option}{separator}{Quote(value)}");
    }

    public RemoteCommand Opt2(String option)
    {
        return new RemoteCommand(Host, Path, $"{Args} --{option}");
    }

    public RemoteCommand Opt2(String option, Object value, String separator = "=")
    {
        return new RemoteCommand(Host, Path, $"{Args} --{option}{separator}{Quote(value)}");
    }

    public RemoteCommand Opt(String option)
    {
        return option.Length == 1
            ? Opt1(option)
            : Opt2(option);
    }

    public RemoteCommand Opt(String option, Object value)
    {
        return option.Length == 1
            ? Opt1(option, value)
            : Opt2(option, value);
    }

    public RemoteCommand Arg(Object argument)
    {
        return new RemoteCommand(Host, Path, Args + " " + Quote(argument));
    }

    private static String Quote(Object argument)
    {
        var arg = argument.ToString();
        if (arg.Contains(" "))
            arg = arg.Quote(); // TODO: single quote?

        return arg;
    }


    #region equality

    public Boolean Equals(RemoteCommand other)
    {
        return Host.Equals(other.Host) && Path.Equals(other.Path) && Args == other.Args;
    }

    public override Boolean Equals(Object obj)
    {
        return obj is RemoteCommand other && Equals(other);
    }

    public override Int32 GetHashCode()
    {
        unchecked
        {
            var hashCode = Host.GetHashCode();
            hashCode = (hashCode * 397) ^ Path.GetHashCode();
            hashCode = (hashCode * 397) ^ (Args != null ? Args.GetHashCode() : 0);
            return hashCode;
        }
    }

    #endregion equality


    public static implicit operator RemoteCommand(RemotePath remotePath) => new RemoteCommand(remotePath);

    public void Deconstruct(out SshHost host, out SysPath path, out String args)
    {
        host = Host;
        path = Path;
        args = Args;
    }

    public override String ToString() => $"{Host}:{Path}{Args}";
}