from dulwich import porcelain
from dulwich import repo
import os


def ro():
    os.system("/etc/init.d/S01mount_ro start")


def rw():
    os.system("/etc/init.d/S01mount_ro stop")


def checkout(rep, branch):
    r = repo.Repo(rep)
    try:
        porcelain.checkout_branch(r, 'origin/' + branch)
    except porcelain.CheckoutError:
        print("Error")
        porcelain.reset(r, 'hard')
        porcelain.checkout_branch(r, 'origin/' + branch)


localrep = "/home/"


rw()
if porcelain.active_branch(localrep) != b'master':
    checkout(localrep, 'master')
else:
    checkout(localrep, 'en')
ro()