/// Represents all the known and defined StatusCodes
#[derive(Debug, PartialEq)]
pub enum StatusCode {
    /// The Request should be continued by the Client
    Continue,
    /// The Server acknowledges and accepts the Request to
    /// switch to another Protocol
    SwitchingProtocols,
    /// The Request has successfully been processed
    OK,
    /// The Request successfully created a new Ressource
    Created,
    /// The Request was successfully accpeted to be processed
    /// but has not been completed yet
    Accepted,
    /// The returned Metainformation was not returned by the
    /// Origin-Server
    NonAuthoritativeInformation,
    /// The Request was successful but there is no Data returned
    NoContent,
    /// The Request has been successfully fulfilled and the
    /// Client can clear its input Content
    ResetContent,
    /// The requested partial Data has been fulfilled
    PartialContent,
    /// The requested Ressource corresponds multiple Ressources
    MultipleChoices,
    /// The Requested Data was moved to another URI
    MovedPermanently,
    /// The requested Ressource temporarily resides under a
    /// different URI
    Found,
    /// The Response to this Request can be found at a
    /// different URI
    SeeOther,
    /// The requested Ressource was not modified between the
    /// last Request and now
    NotModified,
    /// The Ressource can only be accessed through a Proxy
    UseProxy,
    /// The requested Ressource temporarily resides under a
    /// different URI
    TemporaryRedirect,
    /// The Request was not properly send or received
    BadRequest,
    /// The Request tried to access something it is not
    /// authorized to do
    Unauthorized,
    /// Reserved for future use
    PaymentRequired,
    /// The requested Ressource is not allowed to be accessed
    Forbidden,
    /// The requested Ressource could not be found
    NotFound,
    /// The requested Method is not allowed for the specified
    /// Ressource
    MethodNotAllowed,
    /// The Ressource is not capable of accepting the Request
    NotAcceptable,
    /// The Client should first Authenticate with a Proxy and
    /// before attempting the Request again
    ProxyAuthenticationRequired,
    /// The Server decided that the Client took to long and the
    /// Request timed out
    RequestTimeOut,
    /// Request could not complete because there was a conflict
    /// current State of the Ressource
    Conflict,
    /// The Ressource is no longer available
    Gone,
    /// The Server only accepts Requests where the Content-Length
    /// is set
    LengthRequired,
    /// The given Precondition failed
    PreconditionFailed,
    /// The Request-Entity was larger than what the Server allows
    RequestEntityTooLarge,
    /// The URI is longer than what the Server allows
    RequestURITooLarge,
    /// The Media-Type is not supported by the Server for this ressource
    UnsupportedMediaType,
    /// The Requested Range could not be satisfied by the Server
    RequestedRangeNotSatisfiable,
    /// The given Expectation has failed
    ExpectationFailed,
    /// An April Fool's Status-Code that some servers use for a
    /// variety of Situations
    ImATeapot,
    /// The Server Processing encountered some internal Problem
    /// and could not process the Request
    InternalServerError,
    /// Some requested Functionality is not implemented on the Server
    NotImplemented,
    /// An Error occured at a Gateway while sending the
    /// Request to the Target-Server
    BadGateway,
    /// The requested Service is currently unavailable
    ServiceUnavailable,
    /// The Gateway did not received a Response in time
    GatewayTimeout,
    /// The requested HTTP-Version is not supported by the Server
    HTTPVersionNotSupported,
}

impl StatusCode {
    /// Parses the Raw Response Status-Code to the enum
    pub fn parse(raw: &str) -> Option<Self> {
        if raw.len() < 3 {
            return None;
        }

        let key = &raw[0..3];

        match key {
            "100" => Some(StatusCode::Continue),
            "101" => Some(StatusCode::SwitchingProtocols),
            "200" => Some(StatusCode::OK),
            "201" => Some(StatusCode::Created),
            "202" => Some(StatusCode::Accepted),
            "203" => Some(StatusCode::NonAuthoritativeInformation),
            "204" => Some(StatusCode::NoContent),
            "205" => Some(StatusCode::ResetContent),
            "206" => Some(StatusCode::PartialContent),
            "300" => Some(StatusCode::MultipleChoices),
            "301" => Some(StatusCode::MovedPermanently),
            "302" => Some(StatusCode::Found),
            "303" => Some(StatusCode::SeeOther),
            "304" => Some(StatusCode::NotModified),
            "305" => Some(StatusCode::UseProxy),
            "307" => Some(StatusCode::TemporaryRedirect),
            "400" => Some(StatusCode::BadRequest),
            "401" => Some(StatusCode::Unauthorized),
            "402" => Some(StatusCode::PaymentRequired),
            "403" => Some(StatusCode::Forbidden),
            "404" => Some(StatusCode::NotFound),
            "405" => Some(StatusCode::MethodNotAllowed),
            "406" => Some(StatusCode::NotAcceptable),
            "407" => Some(StatusCode::ProxyAuthenticationRequired),
            "408" => Some(StatusCode::RequestTimeOut),
            "409" => Some(StatusCode::Conflict),
            "410" => Some(StatusCode::Gone),
            "411" => Some(StatusCode::LengthRequired),
            "412" => Some(StatusCode::PreconditionFailed),
            "413" => Some(StatusCode::RequestEntityTooLarge),
            "414" => Some(StatusCode::RequestURITooLarge),
            "415" => Some(StatusCode::UnsupportedMediaType),
            "416" => Some(StatusCode::RequestedRangeNotSatisfiable),
            "417" => Some(StatusCode::ExpectationFailed),
            "418" => Some(StatusCode::ImATeapot),
            "500" => Some(StatusCode::InternalServerError),
            "501" => Some(StatusCode::NotImplemented),
            "502" => Some(StatusCode::BadGateway),
            "503" => Some(StatusCode::ServiceUnavailable),
            "504" => Some(StatusCode::GatewayTimeout),
            "505" => Some(StatusCode::HTTPVersionNotSupported),
            _ => None,
        }
    }

    /// Serialzes the given StatusCode
    pub fn serialize(&self) -> &'static str {
        match *self {
            Self::Continue => "100 Continue",
            Self::SwitchingProtocols => "101 Switching Protocols",
            Self::OK => "200 OK",
            Self::Created => "201 Created",
            Self::Accepted => "202 Accepted",
            Self::NonAuthoritativeInformation => "203 Non-Authoritative Information",
            Self::NoContent => "204 No Content",
            Self::ResetContent => "205 Reset Content",
            Self::PartialContent => "206 Partial Content",
            Self::MultipleChoices => "300 Multiple Choices",
            Self::MovedPermanently => "301 Moved Permanently",
            Self::Found => "302 Found",
            Self::SeeOther => "303 See Other",
            Self::NotModified => "304 Not Modified",
            Self::UseProxy => "305 Use Proxy",
            Self::TemporaryRedirect => "307 Temporary Redirect",
            Self::BadRequest => "400 Bad Request",
            Self::Unauthorized => "401 Unauthorized",
            Self::PaymentRequired => "402 Payment Required",
            Self::Forbidden => "403 Forbidden",
            Self::NotFound => "404 Not Found",
            Self::MethodNotAllowed => "405 Method Not Allowed",
            Self::NotAcceptable => "406 Not Acceptable",
            Self::ProxyAuthenticationRequired => "407 Proxy Authentication Required",
            Self::RequestTimeOut => "408 Request Time-out",
            Self::Conflict => "409 Conflict",
            Self::Gone => "410 Gone",
            Self::LengthRequired => "411 Length Required",
            Self::PreconditionFailed => "412 Precondition Failed",
            Self::RequestEntityTooLarge => "413 Request Entity Too Large",
            Self::RequestURITooLarge => "414 Request-URI Too Large",
            Self::UnsupportedMediaType => "415 Unsupported Media Type",
            Self::RequestedRangeNotSatisfiable => "416 Requested Range Not Satisfiable",
            Self::ExpectationFailed => "417 Expectation Failed",
            Self::ImATeapot => "418 I'm a Teapot",
            Self::InternalServerError => "500 Internal Server Error",
            Self::NotImplemented => "501 Not Implemented",
            Self::BadGateway => "502 Bad Gateway",
            Self::ServiceUnavailable => "503 Service Unavailable",
            Self::GatewayTimeout => "504 Gateway Time-out",
            Self::HTTPVersionNotSupported => "505 HTTP Version Not Supported",
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn parse_invalid() {
        assert_eq!(None, StatusCode::parse("1"));
        assert_eq!(None, StatusCode::parse("123"));
    }

    #[test]
    fn parse_all() {
        assert_eq!(Some(StatusCode::Continue), StatusCode::parse("100"));
        assert_eq!(
            Some(StatusCode::SwitchingProtocols),
            StatusCode::parse("101")
        );
        assert_eq!(Some(StatusCode::OK), StatusCode::parse("200"));
        assert_eq!(Some(StatusCode::Created), StatusCode::parse("201"));
        assert_eq!(Some(StatusCode::Accepted), StatusCode::parse("202"));
        assert_eq!(
            Some(StatusCode::NonAuthoritativeInformation),
            StatusCode::parse("203")
        );
        assert_eq!(Some(StatusCode::NoContent), StatusCode::parse("204"));
        assert_eq!(Some(StatusCode::ResetContent), StatusCode::parse("205"));
        assert_eq!(Some(StatusCode::PartialContent), StatusCode::parse("206"));
        assert_eq!(Some(StatusCode::MultipleChoices), StatusCode::parse("300"));
        assert_eq!(Some(StatusCode::MovedPermanently), StatusCode::parse("301"));
        assert_eq!(Some(StatusCode::Found), StatusCode::parse("302"));
        assert_eq!(Some(StatusCode::SeeOther), StatusCode::parse("303"));
        assert_eq!(Some(StatusCode::NotModified), StatusCode::parse("304"));
        assert_eq!(Some(StatusCode::UseProxy), StatusCode::parse("305"));
        assert_eq!(
            Some(StatusCode::TemporaryRedirect),
            StatusCode::parse("307")
        );
        assert_eq!(Some(StatusCode::BadRequest), StatusCode::parse("400"));
        assert_eq!(Some(StatusCode::Unauthorized), StatusCode::parse("401"));
        assert_eq!(Some(StatusCode::PaymentRequired), StatusCode::parse("402"));
        assert_eq!(Some(StatusCode::Forbidden), StatusCode::parse("403"));
        assert_eq!(Some(StatusCode::NotFound), StatusCode::parse("404"));
        assert_eq!(Some(StatusCode::MethodNotAllowed), StatusCode::parse("405"));
        assert_eq!(Some(StatusCode::NotAcceptable), StatusCode::parse("406"));
        assert_eq!(
            Some(StatusCode::ProxyAuthenticationRequired),
            StatusCode::parse("407")
        );
        assert_eq!(Some(StatusCode::RequestTimeOut), StatusCode::parse("408"));
        assert_eq!(Some(StatusCode::Conflict), StatusCode::parse("409"));
        assert_eq!(Some(StatusCode::Gone), StatusCode::parse("410"));
        assert_eq!(Some(StatusCode::LengthRequired), StatusCode::parse("411"));
        assert_eq!(
            Some(StatusCode::PreconditionFailed),
            StatusCode::parse("412")
        );
        assert_eq!(
            Some(StatusCode::RequestEntityTooLarge),
            StatusCode::parse("413")
        );
        assert_eq!(
            Some(StatusCode::RequestURITooLarge),
            StatusCode::parse("414")
        );
        assert_eq!(
            Some(StatusCode::UnsupportedMediaType),
            StatusCode::parse("415")
        );
        assert_eq!(
            Some(StatusCode::RequestedRangeNotSatisfiable),
            StatusCode::parse("416")
        );
        assert_eq!(
            Some(StatusCode::ExpectationFailed),
            StatusCode::parse("417")
        );
        assert_eq!(Some(StatusCode::ImATeapot), StatusCode::parse("418"));
        assert_eq!(
            Some(StatusCode::InternalServerError),
            StatusCode::parse("500")
        );
        assert_eq!(Some(StatusCode::NotImplemented), StatusCode::parse("501"));
        assert_eq!(Some(StatusCode::BadGateway), StatusCode::parse("502"));
        assert_eq!(
            Some(StatusCode::ServiceUnavailable),
            StatusCode::parse("503")
        );
        assert_eq!(Some(StatusCode::GatewayTimeout), StatusCode::parse("504"));
        assert_eq!(
            Some(StatusCode::HTTPVersionNotSupported),
            StatusCode::parse("505")
        );
    }

    #[test]
    fn serialize() {
        assert_eq!("100 Continue".to_owned(), StatusCode::Continue.serialize());
        assert_eq!(
            "101 Switching Protocols".to_owned(),
            StatusCode::SwitchingProtocols.serialize()
        );
        assert_eq!("200 OK".to_owned(), StatusCode::OK.serialize());
        assert_eq!("201 Created".to_owned(), StatusCode::Created.serialize());
        assert_eq!("202 Accepted".to_owned(), StatusCode::Accepted.serialize());
        assert_eq!(
            "203 Non-Authoritative Information".to_owned(),
            StatusCode::NonAuthoritativeInformation.serialize()
        );
        assert_eq!(
            "204 No Content".to_owned(),
            StatusCode::NoContent.serialize()
        );
        assert_eq!(
            "205 Reset Content".to_owned(),
            StatusCode::ResetContent.serialize()
        );
        assert_eq!(
            "206 Partial Content".to_owned(),
            StatusCode::PartialContent.serialize()
        );

        assert_eq!(
            "300 Multiple Choices".to_owned(),
            StatusCode::MultipleChoices.serialize()
        );
        assert_eq!(
            "301 Moved Permanently".to_owned(),
            StatusCode::MovedPermanently.serialize()
        );
        assert_eq!("302 Found".to_owned(), StatusCode::Found.serialize());
        assert_eq!("303 See Other".to_owned(), StatusCode::SeeOther.serialize());
        assert_eq!(
            "304 Not Modified".to_owned(),
            StatusCode::NotModified.serialize()
        );
        assert_eq!("305 Use Proxy".to_owned(), StatusCode::UseProxy.serialize());
        assert_eq!(
            "307 Temporary Redirect".to_owned(),
            StatusCode::TemporaryRedirect.serialize()
        );

        assert_eq!(
            "400 Bad Request".to_owned(),
            StatusCode::BadRequest.serialize()
        );
        assert_eq!(
            "401 Unauthorized".to_owned(),
            StatusCode::Unauthorized.serialize()
        );
        assert_eq!(
            "402 Payment Required".to_owned(),
            StatusCode::PaymentRequired.serialize()
        );
        assert_eq!(
            "403 Forbidden".to_owned(),
            StatusCode::Forbidden.serialize()
        );
        assert_eq!("404 Not Found".to_owned(), StatusCode::NotFound.serialize());
        assert_eq!(
            "405 Method Not Allowed".to_owned(),
            StatusCode::MethodNotAllowed.serialize()
        );
        assert_eq!(
            "406 Not Acceptable".to_owned(),
            StatusCode::NotAcceptable.serialize()
        );
        assert_eq!(
            "407 Proxy Authentication Required".to_owned(),
            StatusCode::ProxyAuthenticationRequired.serialize()
        );
        assert_eq!(
            "408 Request Time-out".to_owned(),
            StatusCode::RequestTimeOut.serialize()
        );
        assert_eq!("409 Conflict".to_owned(), StatusCode::Conflict.serialize());
        assert_eq!("410 Gone".to_owned(), StatusCode::Gone.serialize());
        assert_eq!(
            "411 Length Required".to_owned(),
            StatusCode::LengthRequired.serialize()
        );
        assert_eq!(
            "412 Precondition Failed".to_owned(),
            StatusCode::PreconditionFailed.serialize()
        );
        assert_eq!(
            "413 Request Entity Too Large".to_owned(),
            StatusCode::RequestEntityTooLarge.serialize()
        );
        assert_eq!(
            "414 Request-URI Too Large".to_owned(),
            StatusCode::RequestURITooLarge.serialize()
        );
        assert_eq!(
            "415 Unsupported Media Type".to_owned(),
            StatusCode::UnsupportedMediaType.serialize()
        );
        assert_eq!(
            "416 Requested Range Not Satisfiable".to_owned(),
            StatusCode::RequestedRangeNotSatisfiable.serialize()
        );
        assert_eq!(
            "417 Expectation Failed".to_owned(),
            StatusCode::ExpectationFailed.serialize()
        );
        assert_eq!(
            "418 I'm a Teapot".to_owned(),
            StatusCode::ImATeapot.serialize()
        );

        assert_eq!(
            "500 Internal Server Error".to_owned(),
            StatusCode::InternalServerError.serialize()
        );
        assert_eq!(
            "501 Not Implemented".to_owned(),
            StatusCode::NotImplemented.serialize()
        );
        assert_eq!(
            "502 Bad Gateway".to_owned(),
            StatusCode::BadGateway.serialize()
        );
        assert_eq!(
            "503 Service Unavailable".to_owned(),
            StatusCode::ServiceUnavailable.serialize()
        );
        assert_eq!(
            "504 Gateway Time-out".to_owned(),
            StatusCode::GatewayTimeout.serialize()
        );
        assert_eq!(
            "505 HTTP Version Not Supported".to_owned(),
            StatusCode::HTTPVersionNotSupported.serialize()
        );
    }
}