use std::fmt::{Display, Formatter};
use actix_web::{HttpRequest, HttpResponse, Responder, ResponseError};
use actix_web::body::EitherBody;
use actix_web::web::Json;
use log::error;
use sea_orm::DbErr;

use crate::error::{APIError, APIErrorsResponse};

pub struct OkResponse<T: Responder>(T);

#[derive(Debug)]
pub struct ErrResponse(APIErrorsResponse);

impl<T: Responder> Responder for OkResponse<T> {
    type Body = T::Body;

    fn respond_to(self, req: &HttpRequest) -> HttpResponse<Self::Body> {
        self.0.respond_to(req)
    }
}
impl Responder for ErrResponse {
    type Body = EitherBody<String>;

    fn respond_to(self, req: &HttpRequest) -> HttpResponse<Self::Body> {
        Json(self.0).respond_to(req)
    }
}

impl From<DbErr> for ErrResponse {
    fn from(value: DbErr) -> Self {
        error!("database error: {}", value);
        Self(APIErrorsResponse { errors: vec![
                APIError {
                    code: "ERR_DB_ERROR".to_string(),
                    message: "There was an error performing the database query. Please try again later.".to_string(),
                    path: None,
                }
            ] })
    }
}

impl Display for ErrResponse {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "{:?}", self.0)
    }
}

impl ResponseError for ErrResponse {}