use std::fmt::Debug;
use std::path::PathBuf;

pub trait FileAccessInterface: Debug {
    fn read_file(&self, path: &str) -> Result<String, std::io::Error>;
}

#[derive(Debug, Clone)]
pub struct LocalFileAccessInterface {
    pub working_directory: Option<PathBuf>,
}

impl FileAccessInterface for LocalFileAccessInterface {
    fn read_file(&self, path: &str) -> Result<String, std::io::Error> {
        let final_path = self
            .working_directory
            .as_ref()
            .map(PathBuf::as_path)
            .map(|pb| pb.join(path))
            .unwrap_or_else(|| PathBuf::from(path));
        Ok(std::fs::read_to_string(final_path)?)
    }
}