#[derive(Debug)]
pub enum Error {
    Generic(String),
    UserCreate(String),
    #[cfg(feature = "ssr")]
    Sqlx(sqlx::Error),
    #[cfg(feature = "ssr")]
    TokioJoin(tokio::task::JoinError),
    #[cfg(feature = "ssr")]
    Pbkdf2(pbkdf2::password_hash::errors::Error),
    #[cfg(feature = "ssr")]
    Io(std::io::Error),
    #[cfg(feature = "ssr")]
    Axum(axum::Error),
    AddrParse(std::net::AddrParseError),
    Json(serde_json::Error),
}

impl std::fmt::Display for Error {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Error::Generic(err) => {
                write!(f, "generic error: {err}")
            }
            Error::UserCreate(err) => {
                write!(f, "user create error: {err}")
            }
            #[cfg(feature = "ssr")]
            Error::Sqlx(err) => {
                write!(f, "sqlx error: {err:?}")
            }
            #[cfg(feature = "ssr")]
            Error::TokioJoin(err) => {
                write!(f, "tokio join error: {err:?}")
            }
            #[cfg(feature = "ssr")]
            Error::Pbkdf2(err) => {
                write!(f, "password hash error: {err:?}")
            }
            #[cfg(feature = "ssr")]
            Error::Io(err) => {
                write!(f, "io error: {err:?}")
            }
            Error::AddrParse(err) => {
                write!(f, "ip address parse error: {err:?}")
            }
            Error::Json(err) => {
                write!(f, "json encode/decode error: {err:?}")
            }
            #[cfg(feature = "ssr")]
            Error::Axum(err) => {
                write!(f, "axum error: {err:?}")
            }
        }
    }
}

impl std::error::Error for Error {
    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
        match self {
            #[cfg(feature = "ssr")]
            Error::Sqlx(err) => Some(err),
            #[cfg(feature = "ssr")]
            Error::TokioJoin(err) => Some(err),
            #[cfg(feature = "ssr")]
            Error::Io(err) => Some(err),
            Error::AddrParse(err) => Some(err),
            Error::Json(err) => Some(err),
            #[cfg(feature = "ssr")]
            Error::Axum(err) => Some(err),
            _ => None,
        }
    }
}

#[cfg(feature = "ssr")]
impl axum::response::IntoResponse for Error {
    fn into_response(self) -> axum::response::Response {
        (
            axum::http::StatusCode::INTERNAL_SERVER_ERROR,
            format!("{:?}", self),
        )
            .into_response()
    }
}

impl std::str::FromStr for Error {
    type Err = Self;

    fn from_str(err: &str) -> Result<Self, Self::Err> {
        Ok(Self::Generic(err.to_string()))
    }
}

#[cfg(feature = "ssr")]
impl From<sqlx::Error> for Error {
    fn from(err: sqlx::Error) -> Self {
        Self::Sqlx(err)
    }
}

#[cfg(feature = "ssr")]
impl From<tokio::task::JoinError> for Error {
    fn from(err: tokio::task::JoinError) -> Self {
        Self::TokioJoin(err)
    }
}

#[cfg(feature = "ssr")]
impl From<pbkdf2::password_hash::errors::Error> for Error {
    fn from(err: pbkdf2::password_hash::errors::Error) -> Self {
        Self::Pbkdf2(err)
    }
}

#[cfg(feature = "ssr")]
impl From<std::io::Error> for Error {
    fn from(err: std::io::Error) -> Self {
        Self::Io(err)
    }
}

impl From<std::net::AddrParseError> for Error {
    fn from(err: std::net::AddrParseError) -> Self {
        Self::AddrParse(err)
    }
}

impl From<serde_json::Error> for Error {
    fn from(err: serde_json::Error) -> Self {
        Self::Json(err)
    }
}

#[cfg(feature = "ssr")]
impl From<axum::Error> for Error {
    fn from(err: axum::Error) -> Self {
        Self::Axum(err)
    }
}