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use {
    std::fmt,
};

/// An HTTP method
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum Method {
    Get,
    Post,
    Put,
    Head,
    Delete,
    Connect,
    Options,
    Trace,
    Patch,
    None, // bad request
    Other, // bad request or exotic (eg SSTP)
}

impl From<&str> for Method {
    fn from(s: &str) -> Self {
        match s {
            "GET" => Self::Get,
            "POST" => Self::Post,
            "PUT" => Self::Put,
            "HEAD" => Self::Head,
            "DELETE" => Self::Delete,
            "CONNECT" => Self::Connect,
            "OPTIONS" => Self::Options,
            "TRACE" => Self::Trace,
            "PATCH" => Self::Patch,
            "" | "none" => Self::None,
            _ => {
                //println!("special method: {:?}", s);
                Self::Other
            }
        }
    }
}

impl fmt::Display for Method {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Self::Get => write!(f, "GET"),
            Self::Post => write!(f, "POST"),
            Self::Put => write!(f, "PUT"),
            Self::Head => write!(f, "HEAD"),
            Self::Delete => write!(f, "DELETE"),
            Self::Connect => write!(f, "CONNECT"),
            Self::Options => write!(f, "OPTIONS"),
            Self::Trace => write!(f, "TRACE"),
            Self::Patch => write!(f, "PATCH"),
            Self::None => write!(f, "none"),
            Self::Other => write!(f, "other"),
        }
    }
}