use hex::FromHexError;
use ring::error::KeyRejected;
use thiserror::Error;

use axum::body;
use axum::http::StatusCode;
use axum::response::{IntoResponse, Response};
use axum::Json;

use ring::error::Unspecified as RingUnspecified;

#[derive(Debug, Error)]
pub enum ServiceError {
    #[error("Solarlib error: {0}")]
    Solarlib(#[from] solarlib::errors::Error),

    #[error("Axum error: {0}")]
    Axum(#[from] axum::Error),

    #[error("Not Found")]
    NotFound,

    #[error("Reqwest: {0}")]
    Reqwest(#[from] reqwest::Error),

    #[error("Command error: {0}")]
    Command(#[from] std::io::Error),

    #[error("Not authorized")]
    NotAuthorized,

    #[error("Generic: {0}")]
    Generic(String),

    #[error("Invalid PASETO Key: {0}")]
    PasetoInvalid(#[from] KeyRejected),
}

impl From<FromHexError> for ServiceError {
    fn from(_: FromHexError) -> Self {
        ServiceError::Generic(String::from("Could not convert from hex"))
    }
}

impl From<RingUnspecified> for ServiceError {
    fn from(_: RingUnspecified) -> Self {
        ServiceError::Generic("Unspecified RNG error".to_string())
    }
}
pub type StringResult<T = &'static str> = std::result::Result<T, ServiceError>;

pub type TokenResult<T = String> = std::result::Result<T, ServiceError>;

pub type JsonResult<T> = std::result::Result<T, ServiceError>;
pub type NoneResult = std::result::Result<(), ServiceError>;

impl IntoResponse for ServiceError {
    fn into_response(self) -> Response {
        let body = body::boxed(body::Full::from(self.to_string()));

        let status = match self {
            ServiceError::NotFound => StatusCode::NOT_FOUND,
            ServiceError::NotAuthorized => StatusCode::UNAUTHORIZED,
            _ => StatusCode::INTERNAL_SERVER_ERROR,
        };
        Response::builder().status(status).body(body).unwrap()
    }
}