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"""Integration tests for the new-run-webkit-httpd and new-run-webkit-websocketserver scripts"""

# FIXME: Rename this file to something more descriptive.

import errno
import os
import socket
import subprocess
import sys
import tempfile
import unittest

from copy import copy

from webkitpy.test.markers import slow, xfail, skip


class BaseTest(unittest.TestCase):
    """Basic framework for script tests."""
    __pytest_no_rewrite__ = True
    HOST = 'localhost'

    # Override in actual test classes.
    PORTS = None
    SCRIPT_NAME = None

    def assert_servers_are_down(self, ports=None):
        ports = ports or self.PORTS
        for port in ports:
            try:
                test_socket = socket.socket()
                test_socket.connect((self.HOST, port))
                self.fail()
            except IOError as e:
                self.assertTrue(e.errno in (errno.ECONNREFUSED, errno.ECONNRESET))
            finally:
                test_socket.close()

    def assert_servers_are_up(self, ports=None):
        ports = ports or self.PORTS
        for port in ports:
            try:
                test_socket = socket.socket()
                test_socket.connect((self.HOST, port))
            except IOError as e:
                self.fail('failed to connect to %s:%d' % (self.HOST, port))
            finally:
                test_socket.close()

    def run_script(self, args):
        script_dir = os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
        script_path = os.path.join(script_dir, self.SCRIPT_NAME)
        return subprocess.call([sys.executable, script_path] + args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

    def integration_test_server__normal(self):
        if not self.SCRIPT_NAME:
            return

        self.assert_servers_are_down()
        self.assertEqual(self.run_script(['--server', 'start']), 0)
        self.assert_servers_are_up()
        self.assertEqual(self.run_script(['--server', 'stop']), 0)
        self.assert_servers_are_down()

    def integration_test_server__fails(self):
        if not self.SCRIPT_NAME:
            return

        # Test that if a port isn't available, the call fails.
        for port_number in self.PORTS:
            test_socket = socket.socket()
            try:
                try:
                    test_socket.bind((self.HOST, port_number))
                except socket.error as e:
                    if e.errno in (errno.EADDRINUSE, errno.EALREADY):
                        self.fail('could not bind to port %d: %s' % (port_number, str(e)))
                    raise
                self.assertEqual(self.run_script(['--server', 'start']), 1)
            finally:
                self.run_script(['--server', 'stop'])
                test_socket.close()

        # Test that calling stop() twice is harmless.
        self.assertEqual(self.run_script(['--server', 'stop']), 0)

    def maybe_make_dir(self, *comps):
        try:
            os.makedirs(os.path.join(*comps))
        except OSError as e:
            if e.errno != errno.EEXIST:
                raise

    def integration_test_port_and_root(self):
        if not self.SCRIPT_NAME:
            return

        tmpdir = tempfile.mkdtemp(prefix='webkitpytest')
        self.maybe_make_dir(tmpdir, 'http', 'tests', 'websocket')
        self.maybe_make_dir(tmpdir, 'resources')
        self.maybe_make_dir(tmpdir, 'media')

        self.assert_servers_are_down([18000])
        self.assertEqual(self.run_script(['--server', 'start', '--port=18000', '--root', tmpdir]), 0)
        self.assert_servers_are_up([18000])
        self.assertEqual(self.run_script(['--server', 'stop']), 0)
        self.assert_servers_are_down([18000])


class HTTPServerTest(BaseTest):
    """Tests that new-run-webkit-http must pass."""
    __pytest_no_rewrite__ = False

    PORTS = (8000, 8080, 8443)
    SCRIPT_NAME = 'new-run-webkit-httpd'

    @xfail
    def integration_test_server__normal(self):
        return super(HTTPServerTest, self).integration_test_server__normal()

    @xfail
    def integration_test_server__fails(self):
        return super(HTTPServerTest, self).integration_test_server__fails()

    @xfail
    def integration_test_port_and_root(self):
        return super(HTTPServerTest, self).integration_test_port_and_root()


class WebsocketserverTest(BaseTest):
    """Tests that new-run-webkit-websocketserver must pass."""
    __pytest_no_rewrite__ = False

    # FIXME: test TLS at some point?
    PORTS = (8880, )
    SCRIPT_NAME = 'new-run-webkit-websocketserver'

    @skip("flaky")
    def integration_test_server__normal(self):
        return super(WebsocketserverTest, self).integration_test_server__normal()

    @skip("flaky")
    def integration_test_server__fails(self):
        return super(WebsocketserverTest, self).integration_test_server__fails()

    @slow
    @xfail
    def integration_test_port_and_root(self):
        return super(WebsocketserverTest, self).integration_test_port_and_root()
