use std::fmt;

#[derive(Debug)]
pub enum UserError {
    BadRequest(String),
    Unauthorized,
    Forbidden,
    NotFound,
    Conflict(String),
    Internal(String),
}

impl fmt::Display for UserError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Self::BadRequest(message) => write!(f, "{message}"),
            Self::Unauthorized => write!(f, "unauthorized"),
            Self::Forbidden => write!(f, "forbidden"),
            Self::NotFound => write!(f, "not found"),
            Self::Conflict(message) => write!(f, "{message}"),
            Self::Internal(message) => write!(f, "{message}"),
        }
    }
}

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

impl From<space::errors::SpaceError> for UserError {
    fn from(error: space::errors::SpaceError) -> Self {
        match error {
            space::errors::SpaceError::BadRequest(message) => Self::BadRequest(message),
            space::errors::SpaceError::Unauthorized => Self::Unauthorized,
            space::errors::SpaceError::Forbidden => Self::Forbidden,
            space::errors::SpaceError::NotFound => Self::NotFound,
            space::errors::SpaceError::Conflict(message) => Self::Conflict(message),
            other => Self::Internal(other.to_string()),
        }
    }
}

export::db_error_conversions!(UserError);
export::storage_error_conversion!(UserError);
export::redis_error_conversion!(UserError);
export::export_error_conversion!(UserError);
export::json_payload_conversion!(UserError);

export::api_error! {
    log: "user",
    pub enum ApiError {
        BadRequest(400, "request failed validation"),
        Unauthorized(401, "authentication required"),
        Forbidden(403, "operation not allowed"),
        NotFound(404, "resource not found"),
        Conflict(409, "resource conflict"),
        Internal(500, "internal server error"),
    }
}

impl From<UserError> for ApiError {
    fn from(error: UserError) -> Self {
        match error {
            UserError::BadRequest(msg) => Self::bad_request(msg),
            UserError::Unauthorized => Self::unauthorized(),
            UserError::Forbidden => Self::forbidden(),
            UserError::NotFound => Self::not_found("user resource not found"),
            UserError::Conflict(msg) => Self::conflict(msg),
            UserError::Internal(message) => Self::internal(message),
        }
    }
}