use crate::models::SessionToken;

pub struct AuthInfo {
    pub session_token: Option<SessionToken>,
    pub auth_token: Option<()>,
}

#[macro_export]
macro_rules! auth {
    ($i:expr,$c:expr) => {{
        let authorization_hdr_value = match $i.headers().get("Authorization") {
            Some(hdr) => hdr,
            None => $crate::err!(
                actix_web::http::StatusCode::UNAUTHORIZED,
                $crate::make_err!("ERR_UNAUTHORIZED", "unauthorized")
            ),
        };
        let hdr_value_split = $crate::handle_error!(authorization_hdr_value.to_str())
            .split(' ')
            .collect::<Vec<_>>();
        if hdr_value_split.len() < 2 {
            $crate::err!(
                actix_web::http::StatusCode::UNAUTHORIZED,
                $crate::make_err!("ERR_UNAUTHORIZED", "unauthorized")
            )
        }
        let tokens = hdr_value_split[1..].to_vec();
        let mut auth_info = $crate::auth::AuthInfo {
            session_token: None,
            auth_token: None,
        };
        for token in tokens {
            if token.starts_with("sess-") {
                // handle session token

                use $crate::schema::session_tokens::dsl::*;

                let tokens = $crate::handle_error!(
                    session_tokens
                        .filter(id.eq(token))
                        .select($crate::models::SessionToken::as_select())
                        .load(&mut $c)
                        .await
                );
                let real_token = match tokens.get(0) {
                    Some(tok) => tok,
                    None => $crate::err!(
                        actix_web::http::StatusCode::UNAUTHORIZED,
                        $crate::make_err!("ERR_UNAUTHORIZED", "unauthorized")
                    ),
                };
                auth_info.session_token = Some(real_token.clone());
            } else if token.starts_with("auth-") {
                // parse auth token
                todo!()
            }
        }
        auth_info
    }};
}

#[macro_export]
macro_rules! enforce {
    (sess $i:expr) => {{
        if $i.session_token.is_none() {
            $crate::err!(
                actix_web::http::StatusCode::UNAUTHORIZED,
                $crate::make_err!("ERR_UNAUTHORIZED", "unauthorized")
            )
        }
        $i.session_token.unwrap()
    }};
    (auth $i:expr) => {{
        if $i.auth_token.is_none() {
            $crate::err!(
                actix_web::http::StatusCode::UNAUTHORIZED,
                $crate::make_err!(
                    "ERR_2FA_REQUIRED",
                    "must provide a valid 2FA token to access this endpoint"
                )
            )
        }
        $i.auth_token.unwrap()
    }};
    (sess auth $i:expr) => {{
        if $i.session_token.is_none() {
            $crate::err!(
                actix_web::http::StatusCode::UNAUTHORIZED,
                $crate::make_err!("ERR_UNAUTHORIZED", "unauthorized")
            )
        }
        if $i.auth_token.is_none() {
            $crate::err!(
                actix_web::http::StatusCode::UNAUTHORIZED,
                $crate::make_err!(
                    "ERR_2FA_REQUIRED",
                    "must provide a valid 2FA token to access this endpoint"
                )
            )
        }
        ($i.session_token.unwrap(), $i.auth_token.unwrap())
    }};
    (auth sess $i:expr) => {{
        if $i.session_token.is_none() {
            $crate::err!(
                actix_web::http::StatusCode::UNAUTHORIZED,
                $crate::make_err!("ERR_UNAUTHORIZED", "unauthorized")
            )
        }
        if $i.auth_token.is_none() {
            $crate::err!(
                actix_web::http::StatusCode::UNAUTHORIZED,
                $crate::make_err!(
                    "ERR_2FA_REQUIRED",
                    "must provide a valid 2FA token to access this endpoint"
                )
            )
        }
        ($i.session_token.unwrap(), $i.auth_token.unwrap())
    }};
}