# Copyright (C) 2014 Igalia S.L. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
#     * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
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#     * Neither the name of the copyright holder nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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import logging
import os

from webkitpy.port.driver import Driver

_log = logging.getLogger(__name__)


class XorgDriver(Driver):
    @staticmethod
    def check_driver(port):
        if 'DISPLAY' not in os.environ:
                _log.error('DISPLAY not found in the environment. Cannot run tests.')
                return False
        return True

    def _setup_environ_for_test(self):
        server_environment = self._port.setup_environ_for_server(self._server_name)
        self._port._copy_value_from_environ_if_set(server_environment, 'DISPLAY')
        self._port._copy_value_from_environ_if_set(server_environment, 'XAUTHORITY')
        server_environment['GDK_BACKEND'] = 'x11'
        server_environment['LOCAL_RESOURCE_ROOT'] = self._port.layout_tests_dir()
        server_environment['DUMPRENDERTREE_TEMP'] = str(self._driver_tempdir)
        # Currently on WebKit2, there is no API for setting the application
        # cache directory. Each worker should have it's own and it should be
        # cleaned afterwards, so we set it to inside the temporary folder by
        # prepending XDG_CACHE_HOME with DUMPRENDERTREE_TEMP.
        server_environment['XDG_CACHE_HOME'] = self._port.host.filesystem.join(str(self._driver_tempdir), 'appcache')
        return server_environment

    def _start(self, pixel_tests, per_test_args):
        super(XorgDriver, self).stop()

        self._driver_tempdir = self._port.host.filesystem.mkdtemp(prefix='%s-' % self._server_name)

        self._crashed_process_name = None
        self._crashed_pid = None
        self._server_process = self._port._server_process_constructor(self._port, self._server_name, self.cmd_line(pixel_tests, per_test_args), self._setup_environ_for_test())
        self._server_process.start()