import unittest
from os import path
import six
from .ptrack_helpers import ProbackupTest, ProbackupException
from testgres import stop_all
import subprocess


class DeleteTest(ProbackupTest, unittest.TestCase):

    def __init__(self, *args, **kwargs):
        super(DeleteTest, self).__init__(*args, **kwargs)

    @classmethod
    def tearDownClass(cls):
        stop_all()

    # @unittest.skip("skip")
    # @unittest.expectedFailure
    def test_delete_full_backups(self):
        """delete full backups"""
        fname = self.id().split('.')[3]
        node = self.make_simple_node(base_dir="tmp_dirs/delete/{0}".format(fname),
            set_archiving=True,
            initdb_params=['--data-checksums'],
            pg_options={'wal_level': 'replica'}
            )
        node.start()
        self.assertEqual(self.init_pb(node), six.b(""))
        node.pgbench_init()

        # full backup mode
        self.backup_pb(node)

        pgbench = node.pgbench(stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_pb(node)

        pgbench = node.pgbench(stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
        pgbench.wait()
        pgbench.stdout.close()

        self.backup_pb(node)

        show_backups = self.show_pb(node)
        id_1 = show_backups[0]['ID']
        id_3 = show_backups[2]['ID']
        self.delete_pb(node, show_backups[1]['ID'])
        show_backups = self.show_pb(node)
        self.assertEqual(show_backups[0]['ID'], id_1)
        self.assertEqual(show_backups[1]['ID'], id_3)

        node.stop()

    def test_delete_increment(self):
        """delete increment and all after him"""
        fname = self.id().split('.')[3]
        node = self.make_simple_node(base_dir="tmp_dirs/delete/{0}".format(fname),
            set_archiving=True,
            initdb_params=['--data-checksums'],
            pg_options={'wal_level': 'replica'}
            )
        node.start()
        self.assertEqual(self.init_pb(node), six.b(""))

        # full backup mode
        self.backup_pb(node)

        # page backup mode
        self.backup_pb(node, backup_type="page")

        # page backup mode
        self.backup_pb(node, backup_type="page")

        # full backup mode
        self.backup_pb(node)

        show_backups = self.show_pb(node)

        self.assertEqual(len(show_backups), 4)

        # delete first page backup
        self.delete_pb(node, show_backups[1]['ID'])

        show_backups = self.show_pb(node)
        self.assertEqual(len(show_backups), 2)

        self.assertEqual(show_backups[0]['Mode'], six.b("FULL"))
        self.assertEqual(show_backups[0]['Status'], six.b("OK"))
        self.assertEqual(show_backups[1]['Mode'], six.b("FULL"))
        self.assertEqual(show_backups[1]['Status'], six.b("OK"))

        node.stop()