from logilab.common.testlib import TestCase, unittest_main, mock_object

from cubicweb.devtools import TestServerConfiguration

from cubicweb.selectors import implements

from cubicweb.server import hook

class OperationsTC(CubicWebTC):

        l1 = hook.LateOperation(session)

        l2 = hook.LateOperation(session)

        l3 = hook.Operation(session)

        l0 = hook.SingleLastOperation(session)

        l1 = hook.LateOperation(session)

        l2 = hook.LateOperation(session)

        l3 = hook.Operation(session)

        l4 = hook.SingleLastOperation(session)

class HookCalled(Exception): pass

config = TestServerConfiguration('data')

config.bootstrap_cubes()

schema = config.load_schema()

class AddAnyHook(hook.Hook):

    __regid__ = 'addany'

    category = 'cat1'

    events = ('before_add_entity',)

    def __call__(self):

        raise HookCalled()

class HooksManagerTC(TestCase):

    def setUp(self):

        """ called before each test from this class """

        self.vreg = mock_object(config=config, schema=schema)

        self.o = hook.HooksRegistry(self.vreg)

    def test_register_bad_hook1(self):

        class _Hook(hook.Hook):

            events = ('before_add_entiti',)

        ex = self.assertRaises(Exception, self.o.register, _Hook)

        self.assertEquals(str(ex), 'bad event before_add_entiti on unittest_hook._Hook')

    def test_register_bad_hook2(self):

        class _Hook(hook.Hook):

            events = None

        ex = self.assertRaises(Exception, self.o.register, _Hook)

        self.assertEquals(str(ex), 'bad .events attribute None on unittest_hook._Hook')

    def test_register_bad_hook3(self):

        class _Hook(hook.Hook):

            events = 'before_add_entity'

        ex = self.assertRaises(Exception, self.o.register, _Hook)

        self.assertEquals(str(ex), 'bad event b on unittest_hook._Hook')

    def test_call_hook(self):

        self.o.register(AddAnyHook)

        cw = mock_object(vreg=self.vreg)

        self.assertRaises(HookCalled, self.o.call_hooks, 'before_add_entity', cw)

        self.o.call_hooks('before_delete_entity', cw) # nothing to call

        config.disabled_hooks_categories.add('cat1')

        self.o.call_hooks('before_add_entity', cw) # disabled hooks category, not called

        config.disabled_hooks_categories.remove('cat1')

        self.assertRaises(HookCalled, self.o.call_hooks, 'before_add_entity', cw)

        self.o.unregister(AddAnyHook)

        self.o.call_hooks('before_add_entity', cw) # nothing to call

class SystemHooksTC(CubicWebTC):

    def test_startup_shutdown(self):

        import hooks # cubicweb/server/test/data/hooks.py

        self.assertEquals(hooks.CALLED_EVENTS['server_startup'], True)

        # don't actually call repository.shutdown !

        self.repo.hm.call_hooks('server_shutdown', repo=self.repo)

        self.assertEquals(hooks.CALLED_EVENTS['server_shutdown'], True)

    def test_session_open_close(self):

        import hooks # cubicweb/server/test/data/hooks.py

        cnx = self.login('anon')

        self.assertEquals(hooks.CALLED_EVENTS['session_open'], 'anon')

        cnx.close()

        self.assertEquals(hooks.CALLED_EVENTS['session_close'], 'anon')

# class RelationHookTC(TestCase):

#     """testcase for relation hooks grouping"""

#     def setUp(self):

#         """ called before each test from this class """

#         self.o = HooksManager(schema)

#         self.called = []

#     def test_before_add_relation(self):

#         """make sure before_xxx_relation hooks are called directly"""

#         self.o.register(self._before_relation_hook,

#                              'before_add_relation', 'concerne')

#         self.assertEquals(self.called, [])

#         self.o.call_hooks('before_add_relation', 'concerne', 'USER',

#                           1, 'concerne', 2)

#         self.assertEquals(self.called, [(1, 'concerne', 2)])

#     def test_after_add_relation(self):

#         """make sure after_xxx_relation hooks are deferred"""

#         self.o.register(self._after_relation_hook,

#                              'after_add_relation', 'concerne')

#         self.assertEquals(self.called, [])

#         self.o.call_hooks('after_add_relation', 'concerne', 'USER',

#                           1, 'concerne', 2)

#         self.o.call_hooks('after_add_relation', 'concerne', 'USER',

#                           3, 'concerne', 4)

#         self.assertEquals(self.called, [(1, 'concerne', 2), (3, 'concerne', 4)])

#     def test_before_delete_relation(self):

#         """make sure before_xxx_relation hooks are called directly"""

#         self.o.register(self._before_relation_hook,

#                              'before_delete_relation', 'concerne')

#         self.assertEquals(self.called, [])

#         self.o.call_hooks('before_delete_relation', 'concerne', 'USER',

#                           1, 'concerne', 2)

#         self.assertEquals(self.called, [(1, 'concerne', 2)])

#     def test_after_delete_relation(self):

#         """make sure after_xxx_relation hooks are deferred"""

#         self.o.register(self._after_relation_hook,

#                         'after_delete_relation', 'concerne')

#         self.o.call_hooks('after_delete_relation', 'concerne', 'USER',

#                           1, 'concerne', 2)

#         self.o.call_hooks('after_delete_relation', 'concerne', 'USER',

#                           3, 'concerne', 4)

#         self.assertEquals(self.called, [(1, 'concerne', 2), (3, 'concerne', 4)])

#     def _before_relation_hook(self, pool, subject, r_type, object):

#         self.called.append((subject, r_type, object))

#     def _after_relation_hook(self, pool, subject, r_type, object):

#         self.called.append((subject, r_type, object))