import argparse
from libmproxy import cmdline
from libmproxy.proxy.config import process_proxy_options
from libmproxy.proxy.connection import ServerConnection
from libmproxy.proxy.primitives import ProxyError
from libmproxy.proxy.server import DummyServer, ProxyServer
import tutils
from libpathod import test
from netlib import http, tcp
import mock


def test_proxy_error():
    p = ProxyError(111, "msg")
    assert str(p)


class TestServerConnection:
    def setUp(self):
        self.d = test.Daemon()

    def tearDown(self):
        self.d.shutdown()

    def test_simple(self):
        sc = ServerConnection((self.d.IFACE, self.d.port), None)
        sc.connect()
        r = tutils.treq()
        r.flow.server_conn = sc
        r.path = "/p/200:da"
        sc.send(r._assemble())
        assert http.read_response(sc.rfile, r.method, 1000)
        assert self.d.last_log()

        sc.finish()

    def test_terminate_error(self):
        sc = ServerConnection((self.d.IFACE, self.d.port), None)
        sc.connect()
        sc.connection = mock.Mock()
        sc.connection.recv = mock.Mock(return_value=False)
        sc.connection.flush = mock.Mock(side_effect=tcp.NetLibDisconnect)
        sc.finish()


class TestProcessProxyOptions:
    def p(self, *args):
        parser = tutils.MockParser()
        cmdline.common_options(parser)
        opts = parser.parse_args(args=args)
        return parser, process_proxy_options(parser, opts)

    def assert_err(self, err, *args):
        tutils.raises(err, self.p, *args)

    def assert_noerr(self, *args):
        m, p = self.p(*args)
        assert p
        return p

    def test_simple(self):
        assert self.p()

    def test_confdir(self):
        with tutils.tmpdir() as confdir:
            self.assert_noerr("--confdir", confdir)

    @mock.patch("libmproxy.platform.resolver", None)
    def test_no_transparent(self):
        self.assert_err("transparent mode not supported", "-T")


    @mock.patch("libmproxy.platform.resolver")
    def test_modes(self, _):
        self.assert_noerr("-R", "http://localhost")
        self.assert_err("expected one argument", "-R")
        self.assert_err("Invalid server specification", "-R", "reverse")

        self.assert_noerr("-T")

        self.assert_noerr("-U", "http://localhost")
        self.assert_err("expected one argument", "-U")
        self.assert_err("Invalid server specification", "-U", "upstream")

        self.assert_noerr("--destination-server", "http://localhost")
        self.assert_err("expected one argument", "--destination-server")
        self.assert_err("Invalid server specification", "--destination-server", "manual")

        self.assert_err("mutually exclusive", "-R", "http://localhost", "-T")

    def test_client_certs(self):
        with tutils.tmpdir() as confdir:
            self.assert_noerr("--client-certs", confdir)
            self.assert_err("directory does not exist", "--client-certs", "nonexistent")

    def test_certs(self):
        with tutils.tmpdir() as confdir:
            self.assert_noerr("--cert", tutils.test_data.path("data/testkey.pem"))
            self.assert_err("does not exist", "--cert", "nonexistent")

    def test_auth(self):
        p = self.assert_noerr("--nonanonymous")
        assert p.authenticator

        p = self.assert_noerr("--htpasswd", tutils.test_data.path("data/htpasswd"))
        assert p.authenticator
        self.assert_err("malformed htpasswd file", "--htpasswd", tutils.test_data.path("data/htpasswd.invalid"))

        p = self.assert_noerr("--singleuser", "test:test")
        assert p.authenticator
        self.assert_err("invalid single-user specification", "--singleuser", "test")


class TestProxyServer:
    @tutils.SkipWindows # binding to 0.0.0.0:1 works without special permissions on Windows
    def test_err(self):
        parser = argparse.ArgumentParser()
        cmdline.common_options(parser)
        opts = parser.parse_args(args=[])
        tutils.raises("error starting proxy server", ProxyServer, opts, 1)


class TestDummyServer:
    def test_simple(self):
        d = DummyServer(None)
        d.start_slave()
        d.shutdown()