import argparse
from libmproxy import proxy, flow, cmdline
from libmproxy.prxy.connection import ServerConnection
from libmproxy.prxy.exception import ProxyError
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 MockParser:
    def __init__(self):
        self.err = None

    def error(self, e):
        self.err = e

    def __repr__(self):
        return "ParseError(%s)"%self.err


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

    def assert_err(self, err, *args):
        m, p = self.p(*args)
        assert err.lower() in m.err.lower()

    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_transparent_reverse(self, o):
        self.assert_err("can't set both", "-P", "reverse", "-T")
        self.assert_noerr("-T")
        assert o.call_count == 1
        self.assert_err("invalid reverse proxy", "-P", "reverse")
        self.assert_noerr("-P", "http://localhost")

    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("invalid 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", proxy.ProxyServer, opts, 1)


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