var fs = require('fs');
var path = require('path');
var perms = require('mode-to-permissions');

function check (name, cb) {
    var parts = process.env.PATH.split(':');
    (function next () {
        if (parts.length === 0) return cb(null, false);
        var p = parts.shift();
        fs.stat(path.join(p, name), function (err, stat) {
            if (err) return next();

            if (stat.uid === process.getuid()) {
                kind = 'owner';
            }
            else if (stat.gid === process.getgid()) {
                kind = 'group'
            }
            else {
                kind = 'other'
            }
            cb(null, perms(stat.mode).execute[kind]);
            next();
        });
    })();
}

var adventures = [
    'stream-adventure',
    'levelmeup',
    'learnyounode',
    'browserify-adventure'
];

(function next () {
    if (adventures.length === 0) return;
    var name = adventures.shift();
    check(name, function (err, ex) {
        if (err) return console.error(err);
        if (ex) console.log(name);
        next();
    });
})();