import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parent.parent))

import base64
import hashlib
import unittest

import deckit.obsclient as oc


class Auth(unittest.TestCase):
    def test_matches_protocol_formula(self):
        pw, salt, challenge = "supersecret", "salty", "chall"
        step1 = base64.b64encode(hashlib.sha256((pw + salt).encode()).digest()).decode()
        expected = base64.b64encode(hashlib.sha256((step1 + challenge).encode()).digest()).decode()
        self.assertEqual(oc.auth_string(pw, salt, challenge), expected)
        self.assertNotEqual(oc.auth_string("other", salt, challenge), expected)


class Disconnected(unittest.TestCase):
    def test_request_raises_when_closed(self):
        with self.assertRaises(oc.ModuleError):
            oc.ObsClient(host="127.0.0.1", port=4455, password="").request("GetVersion")


class RecvLoop(unittest.TestCase):
    def test_a_recv_timeout_does_not_end_the_loop(self):
        import websocket

        class FakeWS:
            calls = 0

            def recv(self):
                FakeWS.calls += 1
                if FakeWS.calls <= 3:
                    raise websocket.WebSocketTimeoutException("idle")
                raise RuntimeError("closed")

        c = oc.ObsClient()
        c.ws = FakeWS()
        c.connected = True
        c._recv_loop()
        # It kept calling recv past three idle timeouts; a timeout must not
        # look like a closed socket.
        self.assertEqual(FakeWS.calls, 4)


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