#!/usr/bin/env python

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# Licensed to the Apache Software Foundation (ASF) under one
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# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
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from DebugProtoTest import Srv
from DebugProtoTest.ttypes import CompactProtoTestStruct, Empty, Wrapper
from DebugProtoTest.ttypes import ExceptionWithAMap, MutableException, ExceptionWithoutFields
from thrift.Thrift import TFrozenDict
from thrift.transport import TTransport
from thrift.protocol import TBinaryProtocol, TCompactProtocol
from collections.abc import Hashable
import unittest


class TestFrozenBase(unittest.TestCase):
    def _roundtrip(self, src, dst):
        otrans = TTransport.TMemoryBuffer()
        optoro = self.protocol(otrans)
        src.write(optoro)
        itrans = TTransport.TMemoryBuffer(otrans.getvalue())
        iproto = self.protocol(itrans)
        return dst.read(iproto) or dst

    def test_dict_is_hashable_only_after_frozen(self):
        d0 = {}
        self.assertFalse(isinstance(d0, Hashable))
        d1 = TFrozenDict(d0)
        self.assertTrue(isinstance(d1, Hashable))

    def test_struct_with_collection_fields(self):
        pass

    def test_set(self):
        """Test that annotated set field can be serialized and deserialized"""
        x = CompactProtoTestStruct(set_byte_map={
            frozenset([42, 100, -100]): 99,
            frozenset([0]): 100,
            frozenset([]): 0,
        })
        x2 = self._roundtrip(x, CompactProtoTestStruct())
        self.assertEqual(x2.set_byte_map[frozenset([42, 100, -100])], 99)
        self.assertEqual(x2.set_byte_map[frozenset([0])], 100)
        self.assertEqual(x2.set_byte_map[frozenset([])], 0)

    def test_map(self):
        """Test that annotated map field can be serialized and deserialized"""
        x = CompactProtoTestStruct(map_byte_map={
            TFrozenDict({42: 42, 100: -100}): 99,
            TFrozenDict({0: 0}): 100,
            TFrozenDict({}): 0,
        })
        x2 = self._roundtrip(x, CompactProtoTestStruct())
        self.assertEqual(x2.map_byte_map[TFrozenDict({42: 42, 100: -100})], 99)
        self.assertEqual(x2.map_byte_map[TFrozenDict({0: 0})], 100)
        self.assertEqual(x2.map_byte_map[TFrozenDict({})], 0)

    def test_list(self):
        """Test that annotated list field can be serialized and deserialized"""
        x = CompactProtoTestStruct(list_byte_map={
            (42, 100, -100): 99,
            (0,): 100,
            (): 0,
        })
        x2 = self._roundtrip(x, CompactProtoTestStruct())
        self.assertEqual(x2.list_byte_map[(42, 100, -100)], 99)
        self.assertEqual(x2.list_byte_map[(0,)], 100)
        self.assertEqual(x2.list_byte_map[()], 0)

    def test_empty_struct(self):
        """Test that annotated empty struct can be serialized and deserialized"""
        x = CompactProtoTestStruct(empty_struct_field=Empty())
        x2 = self._roundtrip(x, CompactProtoTestStruct())
        self.assertEqual(x2.empty_struct_field, Empty())

    def test_struct(self):
        """Test that annotated struct can be serialized and deserialized"""
        x = Wrapper(foo=Empty())
        self.assertEqual(x.foo, Empty())
        x2 = self._roundtrip(x, Wrapper)
        self.assertEqual(x2.foo, Empty())

    def test_frozen_exception(self):
        exc = ExceptionWithAMap(blah='foo')
        with self.assertRaises(TypeError):
            exc.blah = 'bar'
        mutexc = MutableException(msg='foo')
        mutexc.msg = 'bar'
        self.assertEqual(mutexc.msg, 'bar')

    def test_frozen_exception_with_no_fields(self):
        ExceptionWithoutFields()

    def test_frozen_exception_serialization(self):
        result = Srv.declaredExceptionMethod_result(
            xwamap=ExceptionWithAMap(blah="error"))
        deserialized = self._roundtrip(
            result, Srv.declaredExceptionMethod_result())
        self.assertEqual(result, deserialized)


class TestFrozen(TestFrozenBase):
    def protocol(self, trans):
        return TBinaryProtocol.TBinaryProtocolFactory().getProtocol(trans)


class TestFrozenAcceleratedBinary(TestFrozenBase):
    def protocol(self, trans):
        return TBinaryProtocol.TBinaryProtocolAcceleratedFactory(fallback=False).getProtocol(trans)


class TestFrozenAcceleratedCompact(TestFrozenBase):
    def protocol(self, trans):
        return TCompactProtocol.TCompactProtocolAcceleratedFactory(fallback=False).getProtocol(trans)


def suite():
    suite = unittest.TestSuite()
    loader = unittest.TestLoader()
    suite.addTest(loader.loadTestsFromTestCase(TestFrozen))
    suite.addTest(loader.loadTestsFromTestCase(TestFrozenAcceleratedBinary))
    suite.addTest(loader.loadTestsFromTestCase(TestFrozenAcceleratedCompact))
    return suite


if __name__ == "__main__":
    unittest.main(defaultTest="suite", testRunner=unittest.TextTestRunner(verbosity=2))
