import os
import shutil
import tempfile
from darc.helpers import Location
from darc.remote import RemoteRepository
from darc.repository import Repository
from darc.testsuite import DarcTestCase


class RepositoryTestCase(DarcTestCase):

    def open(self, create=False):
        return Repository(os.path.join(self.tmppath, 'repository'), create=create)

    def setUp(self):
        self.tmppath = tempfile.mkdtemp()
        self.repository = self.open(create=True)

    def tearDown(self):
        self.repository.close()
        shutil.rmtree(self.tmppath)

    def test1(self):
        for x in range(100):
            self.repository.put(('%-32d' % x).encode('ascii'), b'SOMEDATA')
        key50 = ('%-32d' % 50).encode('ascii')
        self.assert_equal(self.repository.get(key50), b'SOMEDATA')
        self.repository.delete(key50)
        self.assert_raises(Repository.DoesNotExist, lambda: self.repository.get(key50))
        self.repository.commit()
        self.repository.close()
        repository2 = self.open()
        self.assert_raises(Repository.DoesNotExist, lambda: repository2.get(key50))
        for x in range(100):
            if x == 50:
                continue
            self.assert_equal(repository2.get(('%-32d' % x).encode('ascii')), b'SOMEDATA')
        repository2.close()

    def test2(self):
        """Test multiple sequential transactions
        """
        self.repository.put(b'00000000000000000000000000000000', b'foo')
        self.repository.put(b'00000000000000000000000000000001', b'foo')
        self.repository.commit()
        self.repository.delete(b'00000000000000000000000000000000')
        self.repository.put(b'00000000000000000000000000000001', b'bar')
        self.repository.commit()
        self.assert_equal(self.repository.get(b'00000000000000000000000000000001'), b'bar')

    def test_consistency(self):
        """Test cache consistency
        """
        self.repository.put(b'00000000000000000000000000000000', b'foo')
        self.assert_equal(self.repository.get(b'00000000000000000000000000000000'), b'foo')
        self.repository.put(b'00000000000000000000000000000000', b'foo2')
        self.assert_equal(self.repository.get(b'00000000000000000000000000000000'), b'foo2')
        self.repository.put(b'00000000000000000000000000000000', b'bar')
        self.assert_equal(self.repository.get(b'00000000000000000000000000000000'), b'bar')
        self.repository.delete(b'00000000000000000000000000000000')
        self.assert_raises(Repository.DoesNotExist, lambda: self.repository.get(b'00000000000000000000000000000000'))

    def test_consistency2(self):
        """Test cache consistency2
        """
        self.repository.put(b'00000000000000000000000000000000', b'foo')
        self.assert_equal(self.repository.get(b'00000000000000000000000000000000'), b'foo')
        self.repository.commit()
        self.repository.put(b'00000000000000000000000000000000', b'foo2')
        self.assert_equal(self.repository.get(b'00000000000000000000000000000000'), b'foo2')
        self.repository.rollback()
        self.assert_equal(self.repository.get(b'00000000000000000000000000000000'), b'foo')

    def test_single_kind_transactions(self):
        # put
        self.repository.put(b'00000000000000000000000000000000', b'foo')
        self.repository.commit()
        self.repository.close()
        # replace
        self.repository = self.open()
        self.repository.put(b'00000000000000000000000000000000', b'bar')
        self.repository.commit()
        self.repository.close()
        # delete
        self.repository = self.open()
        self.repository.delete(b'00000000000000000000000000000000')
        self.repository.commit()


class RemoteRepositoryTestCase(RepositoryTestCase):

    def open(self, create=False):
        return RemoteRepository(Location('localhost:' + os.path.join(self.tmppath, 'repository')), create=create)