use axum::response::{IntoResponse, Response};
use export::rest::{AppResponseData, NoData};
use sea_orm::DbErr;

#[derive(Debug)]
pub enum SessionError {
    Unauthorized,
    Database(DbErr),
}

impl std::fmt::Display for SessionError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::Unauthorized => write!(f, "unauthorized"),
            Self::Database(err) => write!(f, "database error: {err}"),
        }
    }
}

impl std::error::Error for SessionError {
    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
        match self {
            Self::Database(err) => Some(err),
            _ => None,
        }
    }
}

impl From<DbErr> for SessionError {
    fn from(err: DbErr) -> Self {
        Self::Database(err)
    }
}

impl IntoResponse for SessionError {
    fn into_response(self) -> Response {
        match self {
            Self::Unauthorized => {
                AppResponseData::<NoData>::err(401, "unauthorized").into_response()
            }
            Self::Database(err) => {
                tracing::error!(error = %err, "session store failure");
                AppResponseData::<NoData>::err(500, "internal error").into_response()
            }
        }
    }
}