#!/usr/bin/python3
import subprocess
import Pyro4

ENCODING = 'utf-8'

class ZfsSnapshotManagerDaemon(object):
    # TODO docstrings class and methods
    snapshots = list()
    def __init__(self):
        self.snapshots = self.call_zfs_list_snapshots()

    def call_zfs_list_snapshots(self):
        command = ('zfs list -Hp -t snapshot -o name,creation,used,referenced -s name')
        p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
        snapshot_list = [snapshot.decode(ENCODING) for snapshot in p.stdout]
        retval = p.wait() ## TODO Implement retval actions
        return snapshot_list

    @Pyro4.expose
    def get_current_list(self):
        return self.snapshots

# TODO socket start and delete handling + SIGINT handling
daemon = Pyro4.Daemon(port=None,unixsocket='/run/zfssmd.sock')
uri = daemon.register(ZfsSnapshotManagerDaemon(), "058b7dde9ec53de9235cfc57a07ce17a9eabfce3")
print (uri) ## FIXME debug only
daemon.requestLoop()