use std::fs;
use std::path::PathBuf;

#[derive(Debug)]
pub struct FetcherCache {
    base_dir: PathBuf,
}

impl FetcherCache {
    pub fn new() -> Result<Self, std::io::Error> {
        let base_dir = dirs::cache_dir()
            .unwrap_or_else(|| PathBuf::from("/tmp"))
            .join("fix")
            .join("fetchers");

        fs::create_dir_all(&base_dir)?;

        Ok(Self { base_dir })
    }

    fn git_cache_dir(&self) -> PathBuf {
        self.base_dir.join("git")
    }

    pub fn get_git_bare(&self, url: &str) -> PathBuf {
        let key = crate::nix_utils::sha256_hex(url.as_bytes());
        self.git_cache_dir().join(key)
    }
}