#!/usr/bin/env python3
# Written by Martin Fischer <martin@push-f.com> and licensed under MIT.
from multiprocessing.dummy import Pool
import toml
import requests

sess = requests.session()
sess.headers['user-agent'] = 'cargo_check.py'

tasks = []

with open('Cargo.toml') as f:
    data = toml.load(f)
    for name, info in data['dependencies'].items():
        version = info if isinstance(info, str) else info.get('version')
        tasks.append((name, version))

def check_package(info):
    name, version = info
    res = sess.get('https://crates.io/api/v1/crates/{}'.format(name))
    latest_version = res.json()['versions'][0]
    if latest_version['yanked']:
        print(name, 'was yanked')
    elif not latest_version['num'].startswith(version):
        print('{} is outdated ({}), {} is available'.format(name, version, latest_version['num']))

pool = Pool()
pool.map(check_package, tasks)