import json
from six.moves import cStringIO as StringIO
import re
import pytest
from mock import Mock

from netlib import http
from netlib import tcp
from netlib.exceptions import NetlibException
from netlib.http import http1, http2

from pathod import pathoc, test, version, pathod, language
from netlib.tutils import raises
import tutils
from test.mitmproxy.tutils import skip_windows


def test_response():
    r = http.Response("HTTP/1.1", 200, "Message", {}, None, None)
    assert repr(r)


class _TestDaemon:
    ssloptions = pathod.SSLOptions()

    @classmethod
    def setup_class(cls):
        cls.d = test.Daemon(
            ssl=cls.ssl,
            ssloptions=cls.ssloptions,
            staticdir=tutils.test_data.path("data"),
            anchors=[
                (re.compile("/anchor/.*"), "202")
            ]
        )

    @classmethod
    def teardown_class(cls):
        cls.d.shutdown()

    def setUp(self):
        self.d.clear_log()

    def test_info(self):
        c = pathoc.Pathoc(
            ("127.0.0.1", self.d.port),
            ssl=self.ssl,
            fp=None
        )
        c.connect()
        resp = c.request("get:/api/info")
        assert tuple(json.loads(resp.content)["version"]) == version.IVERSION

    def tval(
        self,
        requests,
        showreq=False,
        showresp=False,
        explain=False,
        showssl=False,
        hexdump=False,
        timeout=None,
        ignorecodes=(),
        ignoretimeout=None,
        showsummary=True
    ):
        s = StringIO()
        c = pathoc.Pathoc(
            ("127.0.0.1", self.d.port),
            ssl=self.ssl,
            showreq=showreq,
            showresp=showresp,
            explain=explain,
            hexdump=hexdump,
            ignorecodes=ignorecodes,
            ignoretimeout=ignoretimeout,
            showsummary=showsummary,
            fp=s
        )
        c.connect(showssl=showssl, fp=s)
        if timeout:
            c.settimeout(timeout)
        for i in requests:
            r = language.parse_pathoc(i).next()
            if explain:
                r = r.freeze(language.Settings())
            try:
                c.request(r)
            except NetlibException:
                pass
        return s.getvalue()


class TestDaemonSSL(_TestDaemon):
    ssl = True
    ssloptions = pathod.SSLOptions(
        request_client_cert=True,
        sans=["test1.com", "test2.com"],
        alpn_select=b'h2',
    )

    def test_sni(self):
        c = pathoc.Pathoc(
            ("127.0.0.1", self.d.port),
            ssl=True,
            sni="foobar.com",
            fp=None
        )
        c.connect()
        c.request("get:/p/200")
        r = c.request("get:/api/log")
        d = json.loads(r.content)
        assert d["log"][0]["request"]["sni"] == "foobar.com"

    def test_showssl(self):
        assert "certificate chain" in self.tval(["get:/p/200"], showssl=True)

    def test_clientcert(self):
        c = pathoc.Pathoc(
            ("127.0.0.1", self.d.port),
            ssl=True,
            clientcert=tutils.test_data.path("data/clientcert/client.pem"),
            fp=None
        )
        c.connect()
        c.request("get:/p/200")
        r = c.request("get:/api/log")
        d = json.loads(r.content)
        assert d["log"][0]["request"]["clientcert"]["keyinfo"]

    def test_http2_without_ssl(self):
        fp = StringIO()
        c = pathoc.Pathoc(
            ("127.0.0.1", self.d.port),
            use_http2=True,
            ssl=False,
            fp = fp
        )
        tutils.raises(NotImplementedError, c.connect)


class TestDaemon(_TestDaemon):
    ssl = False

    def test_ssl_error(self):
        c = pathoc.Pathoc(("127.0.0.1", self.d.port), ssl=True, fp=None)
        tutils.raises("ssl handshake", c.connect)

    def test_showssl(self):
        assert "certificate chain" not in self.tval(
            ["get:/p/200"],
            showssl=True)

    def test_ignorecodes(self):
        assert "200" in self.tval(["get:'/p/200:b@1'"])
        assert "200" in self.tval(["get:'/p/200:b@1'"])
        assert "200" in self.tval(["get:'/p/200:b@1'"])
        assert "200" not in self.tval(["get:'/p/200:b@1'"], ignorecodes=[200])
        assert "200" not in self.tval(
            ["get:'/p/200:b@1'"],
            ignorecodes=[
                200,
                201])
        assert "202" in self.tval(["get:'/p/202:b@1'"], ignorecodes=[200, 201])

    def test_timeout(self):
        assert "Timeout" in self.tval(["get:'/p/200:p0,100'"], timeout=0.01)
        assert "HTTP" in self.tval(
            ["get:'/p/200:p5,100'"],
            showresp=True,
            timeout=1
        )
        assert "HTTP" not in self.tval(
            ["get:'/p/200:p3,100'"],
            showresp=True,
            timeout=1,
            ignoretimeout=True
        )

    def test_showresp(self):
        reqs = ["get:/api/info:p0,0", "get:/api/info:p0,0"]
        assert self.tval(reqs).count("200") == 2
        assert self.tval(reqs, showresp=True).count("HTTP/1.1 200 OK") == 2
        assert self.tval(
            reqs, showresp=True, hexdump=True
        ).count("0000000000") == 2

    def test_showresp_httperr(self):
        v = self.tval(["get:'/p/200:d20'"], showresp=True, showsummary=True)
        assert "Invalid headers" in v
        assert "HTTP/" in v

    def test_explain(self):
        reqs = ["get:/p/200:b@100"]
        assert "b@100" not in self.tval(reqs, explain=True)

    def test_showreq(self):
        reqs = ["get:/api/info:p0,0", "get:/api/info:p0,0"]
        assert self.tval(reqs, showreq=True).count("GET /api") == 2
        assert self.tval(
            reqs, showreq=True, hexdump=True
        ).count("0000000000") == 2

    def test_conn_err(self):
        assert "Invalid server response" in self.tval(["get:'/p/200:d2'"])

    def test_websocket_shutdown(self):
        c = pathoc.Pathoc(("127.0.0.1", self.d.port), fp=None)
        c.connect()
        c.request("ws:/")
        c.stop()

    @skip_windows
    @pytest.mark.skip(reason="race condition")
    def test_wait_finish(self):
        c = pathoc.Pathoc(
            ("127.0.0.1", self.d.port),
            fp=None,
            ws_read_limit=1
        )
        c.connect()
        c.request("ws:/")
        c.request("wf:f'wf:x100'")
        [i for i in c.wait(timeout=0, finish=False)]
        [i for i in c.wait(timeout=0)]

    def test_connect_fail(self):
        to = ("foobar", 80)
        c = pathoc.Pathoc(("127.0.0.1", self.d.port), fp=None)
        c.rfile, c.wfile = StringIO(), StringIO()
        with raises("connect failed"):
            c.http_connect(to)
        c.rfile = StringIO(
            "HTTP/1.1 500 OK\r\n"
        )
        with raises("connect failed"):
            c.http_connect(to)
        c.rfile = StringIO(
            "HTTP/1.1 200 OK\r\n"
        )
        c.http_connect(to)

    def test_socks_connect(self):
        to = ("foobar", 80)
        c = pathoc.Pathoc(("127.0.0.1", self.d.port), fp=None)
        c.rfile, c.wfile = tutils.treader(""), StringIO()
        tutils.raises(pathoc.PathocError, c.socks_connect, to)

        c.rfile = tutils.treader(
            "\x05\xEE"
        )
        tutils.raises("SOCKS without authentication", c.socks_connect, ("example.com", 0xDEAD))

        c.rfile = tutils.treader(
            "\x05\x00" +
            "\x05\xEE\x00\x03\x0bexample.com\xDE\xAD"
        )
        tutils.raises("SOCKS server error", c.socks_connect, ("example.com", 0xDEAD))

        c.rfile = tutils.treader(
            "\x05\x00" +
            "\x05\x00\x00\x03\x0bexample.com\xDE\xAD"
        )
        c.socks_connect(("example.com", 0xDEAD))


class TestDaemonHTTP2(_TestDaemon):
    ssl = True

    if tcp.HAS_ALPN:

        def test_http2(self):
            c = pathoc.Pathoc(
                ("127.0.0.1", self.d.port),
                fp=None,
                ssl=True,
                use_http2=True,
            )
            assert isinstance(c.protocol, http2.HTTP2Protocol)

            c = pathoc.Pathoc(
                ("127.0.0.1", self.d.port),
            )
            assert c.protocol == http1

        def test_http2_alpn(self):
            c = pathoc.Pathoc(
                ("127.0.0.1", self.d.port),
                fp=None,
                ssl=True,
                use_http2=True,
                http2_skip_connection_preface=True,
            )

            tmp_convert_to_ssl = c.convert_to_ssl
            c.convert_to_ssl = Mock()
            c.convert_to_ssl.side_effect = tmp_convert_to_ssl
            c.connect()

            _, kwargs = c.convert_to_ssl.call_args
            assert set(kwargs['alpn_protos']) == set([b'http/1.1', b'h2'])

        def test_request(self):
            c = pathoc.Pathoc(
                ("127.0.0.1", self.d.port),
                fp=None,
                ssl=True,
                use_http2=True,
            )
            c.connect()
            resp = c.request("get:/p/200")
            assert resp.status_code == 200