gitlist 0.1.0

A simple command-line tool to recursively find and list Git repositories.
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use std::{env, fs, path::PathBuf};

fn main() -> Result<(), std::io::Error> {
    let args: Vec<String> = env::args().collect();
    let cwd = args.get(1).map(|a| a.to_string()).unwrap_or(
        env::current_dir()?
            .to_str()
            .expect("No directory provided")
            .to_string(),
    );
    let repos = get_repos(&cwd)?;

    for r in repos {
        println!("{}", r)
    }

    Ok(())
}

fn get_repos(root: &str) -> Result<Vec<String>, std::io::Error> {
    let dirs = get_dirs(root)?;

    if dirs.len() == 0 {
        return Ok(vec![]);
    }

    if has_git(&dirs) {
        return Ok(vec![root.to_string()]);
    }

    return Ok(dirs
        .into_iter()
        .flat_map(|dir| {
            return get_repos(&dir).into_iter();
        })
        .flatten()
        .collect::<Vec<String>>());
}

fn get_dirs(root: &str) -> Result<Vec<String>, std::io::Error> {
    return Ok(fs::read_dir(root)?
        .into_iter()
        .filter_map(|entry| {
            let path: PathBuf = entry.ok()?.path();
            let metadata = fs::metadata(&path).ok()?;

            if !metadata.is_dir() {
                return None;
            }

            return Some(path.to_str()?.to_string());
        })
        .collect::<Vec<String>>());
}

fn has_git(dirs: &Vec<String>) -> bool {
    return dirs.iter().any(|entry| {
        return entry.contains(".git");
    });
}