use std::path::PathBuf;

use crate::project::Project;

pub trait Parser {
    type Error: std::error::Error;

    fn parse(&self, path_buf: PathBuf) -> Result<Project, Self::Error>;
}

pub trait FilterMap {
    fn filter_map(&self, path_buf: PathBuf) -> Option<Project>;
}

impl<T> FilterMap for T
where
    T: Parser,
{
    fn filter_map(&self, path_buf: PathBuf) -> Option<Project> {
        match self.parse(path_buf) {
            Ok(p) => Some(p),
            Err(err) => {
                tracing::info!(%err, "Parser failed to parse project");
                None
            }
        }
    }
}

impl FilterMap for Vec<Box<dyn FilterMap>> {
    fn filter_map(&self, path_buf: PathBuf) -> Option<Project> {
        self.iter()
            .filter_map(|p| p.filter_map(path_buf.to_owned()))
            .reduce(|max, p| p.max(max))
    }
}