# -*- coding: utf-8 -*-
#
import unittest

from ...websocket._abnf import ABNF, frame_buffer
from ...websocket._exceptions import WebSocketProtocolException

"""
test_abnf.py
websocket - WebSocket client library for Python

Copyright 2024 engn33r

Licensed 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, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""


class ABNFTest(unittest.TestCase):
    def test_init(self):
        a = ABNF(0, 0, 0, 0, opcode=ABNF.OPCODE_PING)
        self.assertEqual(a.fin, 0)
        self.assertEqual(a.rsv1, 0)
        self.assertEqual(a.rsv2, 0)
        self.assertEqual(a.rsv3, 0)
        self.assertEqual(a.opcode, 9)
        self.assertEqual(a.data, "")
        a_bad = ABNF(0, 1, 0, 0, opcode=77)
        self.assertEqual(a_bad.rsv1, 1)
        self.assertEqual(a_bad.opcode, 77)

    def test_validate(self):
        a_invalid_ping = ABNF(0, 0, 0, 0, opcode=ABNF.OPCODE_PING)
        self.assertRaises(
            WebSocketProtocolException,
            a_invalid_ping.validate,
            skip_utf8_validation=False,
        )
        a_bad_rsv_value = ABNF(0, 1, 0, 0, opcode=ABNF.OPCODE_TEXT)
        self.assertRaises(
            WebSocketProtocolException,
            a_bad_rsv_value.validate,
            skip_utf8_validation=False,
        )
        a_bad_opcode = ABNF(0, 0, 0, 0, opcode=77)
        self.assertRaises(
            WebSocketProtocolException,
            a_bad_opcode.validate,
            skip_utf8_validation=False,
        )
        a_bad_close_frame = ABNF(0, 0, 0, 0, opcode=ABNF.OPCODE_CLOSE, data=b"\x01")
        self.assertRaises(
            WebSocketProtocolException,
            a_bad_close_frame.validate,
            skip_utf8_validation=False,
        )
        a_bad_close_frame_2 = ABNF(
            0, 0, 0, 0, opcode=ABNF.OPCODE_CLOSE, data=b"\x01\x8a\xaa\xff\xdd"
        )
        self.assertRaises(
            WebSocketProtocolException,
            a_bad_close_frame_2.validate,
            skip_utf8_validation=False,
        )
        a_bad_close_frame_3 = ABNF(
            0, 0, 0, 0, opcode=ABNF.OPCODE_CLOSE, data=b"\x03\xe7"
        )
        self.assertRaises(
            WebSocketProtocolException,
            a_bad_close_frame_3.validate,
            skip_utf8_validation=True,
        )

    def test_mask(self):
        abnf_none_data = ABNF(
            0, 0, 0, 0, opcode=ABNF.OPCODE_PING, mask_value=1, data=None
        )
        bytes_val = b"aaaa"
        self.assertEqual(abnf_none_data._get_masked(bytes_val), bytes_val)
        abnf_str_data = ABNF(
            0, 0, 0, 0, opcode=ABNF.OPCODE_PING, mask_value=1, data="a"
        )
        self.assertEqual(abnf_str_data._get_masked(bytes_val), b"aaaa\x00")

    def test_format(self):
        abnf_bad_rsv_bits = ABNF(2, 0, 0, 0, opcode=ABNF.OPCODE_TEXT)
        self.assertRaises(ValueError, abnf_bad_rsv_bits.format)
        abnf_bad_opcode = ABNF(0, 0, 0, 0, opcode=5)
        self.assertRaises(ValueError, abnf_bad_opcode.format)
        abnf_length_10 = ABNF(0, 0, 0, 0, opcode=ABNF.OPCODE_TEXT, data="abcdefghij")
        self.assertEqual(b"\x01", abnf_length_10.format()[0].to_bytes(1, "big"))
        self.assertEqual(b"\x8a", abnf_length_10.format()[1].to_bytes(1, "big"))
        self.assertEqual("fin=0 opcode=1 data=abcdefghij", abnf_length_10.__str__())
        abnf_length_20 = ABNF(
            0, 0, 0, 0, opcode=ABNF.OPCODE_BINARY, data="abcdefghijabcdefghij"
        )
        self.assertEqual(b"\x02", abnf_length_20.format()[0].to_bytes(1, "big"))
        self.assertEqual(b"\x94", abnf_length_20.format()[1].to_bytes(1, "big"))
        abnf_no_mask = ABNF(
            0, 0, 0, 0, opcode=ABNF.OPCODE_TEXT, mask_value=0, data=b"\x01\x8a\xcc"
        )
        self.assertEqual(b"\x01\x03\x01\x8a\xcc", abnf_no_mask.format())

    def test_frame_buffer(self):
        fb = frame_buffer(0, True)
        self.assertEqual(fb.recv, 0)
        self.assertEqual(fb.skip_utf8_validation, True)
        fb.clear
        self.assertEqual(fb.header, None)
        self.assertEqual(fb.length, None)
        self.assertEqual(fb.mask_value, None)
        self.assertEqual(fb.has_mask(), False)


if __name__ == "__main__":
    unittest.main()
