extern crate chrono;
extern crate crypto_hash;
extern crate serde_yaml;
extern crate walkdir;

use std::env;
use std::io;
use std::collections::BTreeMap;
use walkdir::{WalkDir, DirEntry};

mod format;


fn main() -> io::Result<()> {
    for dirname in env::args().skip(1) {
        let maps = WalkDir::new(&dirname)
            .into_iter()
            .filter_map(|e| e.ok())
            .map(|e| mkmap(e));
        for map in maps {
            println!("{}", serde_yaml::to_string(&map).unwrap());
        }
    }
    Ok(())
}


fn mkmap(e: DirEntry) -> BTreeMap<&'static str, String> {
    let fields = vec![
        ("Name", format::name(&e)),
        ("Mtime", format::mtime(&e)),
        ("Mode", format::mode(&e)),
        ("Ino", format::inode(&e)),
        ("Dev", format::dev(&e)),
        ("Nlink", format::nlink(&e)),
        ("Size", format::size(&e)),
        ("Uid", format::uid(&e)),
        ("Username", format::username(&e)),
        ("Gid", format::gid(&e)),
        ("Group", format::group(&e)),
    ];
    let mut map: BTreeMap<&str, String> =
        BTreeMap::from(fields.iter().cloned().collect());

    if let Ok(m) = e.metadata() {
        if m.is_file() {
            map.insert("SHA256", format::sha256(&e));
        }
    }
    map
}