use geoffrey_models::models::response::api_error::GeoffreyAPIError;

pub type Result<T> = std::result::Result<T, GeoffreyDBError>;

#[derive(Debug)]
pub enum GeoffreyDBError {
    SledError(sled::Error),
    SerdeJsonError(serde_json::Error),
    NotUnique,
    NotFound,
}

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

impl std::fmt::Display for GeoffreyDBError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            GeoffreyDBError::SledError(e) => write!(f, "Sled Error: {}", e),
            GeoffreyDBError::SerdeJsonError(e) => write!(f, "Serde JSON Error: {}", e),
            GeoffreyDBError::NotUnique => write!(f, "Entry is not unique."),
            GeoffreyDBError::NotFound => write!(f, "Entry was not found."),
        }
    }
}

impl From<sled::Error> for GeoffreyDBError {
    fn from(e: sled::Error) -> Self {
        GeoffreyDBError::SledError(e)
    }
}

impl From<serde_json::Error> for GeoffreyDBError {
    fn from(e: serde_json::Error) -> Self {
        GeoffreyDBError::SerdeJsonError(e)
    }
}

impl Into<GeoffreyAPIError> for GeoffreyDBError {
    fn into(self) -> GeoffreyAPIError {
        match self {
            GeoffreyDBError::SledError(_) => GeoffreyAPIError::DatabaseError(self.to_string()),
            GeoffreyDBError::SerdeJsonError(_) => GeoffreyAPIError::DatabaseError(self.to_string()),
            GeoffreyDBError::NotUnique => GeoffreyAPIError::EntryNotUnique,
            GeoffreyDBError::NotFound => GeoffreyAPIError::EntryNotFound
        }
    }
}