use crate::templates::TplError;

use actix_web::dev::HttpResponseBuilder;
use actix_web::{error, http::header, http::StatusCode, HttpResponse};
use askama::Template;
use std::fmt;

pub fn crash(lang: String, error_msg: &'static str) -> TrainCrash {
    TrainCrash { lang, error_msg }
}

#[derive(Debug)]
pub struct TrainCrash {
    pub error_msg: &'static str,
    pub lang: String,
}

// gonna avoid using failure crate
// by implementing display
impl fmt::Display for TrainCrash {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{:?}", self.error_msg)
    }
}

impl error::ResponseError for TrainCrash {
    fn error_response(&self) -> HttpResponse {
        eprintln!("Error reached: {}", self.error_msg);
        HttpResponseBuilder::new(self.status_code())
            .set_header(header::CONTENT_TYPE, "text/html; charset=utf-8")
            .body(
                TplError {
                    lang: &self.lang,
                    error_msg: self.error_msg,
                }
                .render()
                .expect("error_tplrender (TplError). Empty page sent to client."),
            )
    }
    fn status_code(&self) -> StatusCode {
        match self.error_msg {
            "error_forward_req" => StatusCode::BAD_GATEWAY,
            "error_forward_resp" => StatusCode::BAD_GATEWAY,
            "error_login_get" => StatusCode::BAD_GATEWAY,
            "error_login_get_body" => StatusCode::BAD_GATEWAY,
            "error_login_post" => StatusCode::BAD_GATEWAY,
            "error_login_redir" => StatusCode::BAD_GATEWAY,
            "error_createaccount_post" => StatusCode::BAD_GATEWAY,
            "error_createaccount_post_body" => StatusCode::BAD_GATEWAY,
            "error_createaccount_status" => StatusCode::BAD_GATEWAY,
            "error_createaccount_ncstatus" => StatusCode::BAD_GATEWAY,
            "error_forwardlogin_notfound" => StatusCode::NOT_FOUND,
            "error_forwardregister_tokenparse" => StatusCode::BAD_REQUEST,
            "error_login_cookiepair" => StatusCode::BAD_GATEWAY,
            "error_login_regex" => StatusCode::BAD_GATEWAY,
            "error_login_setcookie" => StatusCode::BAD_REQUEST,
            "error_createaccount" => StatusCode::BAD_GATEWAY,
            "error_dirtyhacker" => StatusCode::UNAUTHORIZED,
            _ => StatusCode::INTERNAL_SERVER_ERROR,
        }
    }
}