use actix_web::http::StatusCode;
use actix_web::{HttpResponse, ResponseError};
use serde_json::json;

#[derive(Debug, Clone)]
pub enum SessionError {
    Unauthorized,
    Expired,
    Verifier(String),
}

impl std::fmt::Display for SessionError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::Unauthorized => write!(f, "unauthenticated"),
            Self::Expired => write!(f, "token expired"),
            Self::Verifier(message) => write!(f, "token rejected: {message}"),
        }
    }
}

impl std::error::Error for SessionError {}

impl SessionError {
    pub fn code(&self) -> &'static str {
        match self {
            Self::Unauthorized => "unauthenticated",
            Self::Expired => "token_expired",
            Self::Verifier(_) => "invalid_token",
        }
    }
}

impl ResponseError for SessionError {
    fn status_code(&self) -> StatusCode {
        StatusCode::UNAUTHORIZED
    }

    fn error_response(&self) -> HttpResponse {
        let message = self.code();
        HttpResponse::Unauthorized().json(json!({
            "code": 401,
            "message": message,
            "data": null,
            "error": null,
            "error_code": message,
            "request_id": null,
            "log_id": null,
        }))
    }
}