use actix_web::{error::ResponseError, HttpResponse};
use argonautica::Error as HashError;
use derive_more::Display;
use diesel::result::Error as DieselError;
use log::error;
use std::convert::From;

#[derive(Debug, Display)]
pub enum ServiceError {
    #[display(fmt = "Internal Server Error")]
    InternalServerError,

    #[display(fmt = "Unauthorized")]
    Unauthorized,

    #[display(fmt = "Not Found")]
    NotFound,
}

impl ResponseError for ServiceError {
    fn error_response(&self) -> HttpResponse {
        match *self {
            ServiceError::InternalServerError => {
                HttpResponse::InternalServerError().body("Internal Server Error")
            }
            ServiceError::Unauthorized => HttpResponse::Unauthorized().body("Unauthorized"),
            ServiceError::NotFound => HttpResponse::NotFound().body("404 Not Found"),
        }
    }
}

impl From<DieselError> for ServiceError {
    fn from(e: DieselError) -> ServiceError {
        error!("Database error: {}", e);
        ServiceError::InternalServerError
    }
}

impl From<HashError> for ServiceError {
    fn from(e: HashError) -> ServiceError {
        error!("Hash error: {}", e);
        ServiceError::InternalServerError
    }
}