# Copyright (C) 2017 Igalia S.L.
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import logging
import os

from webkitpy.port.driver import Driver

_log = logging.getLogger(__name__)


class HeadlessDriver(Driver):
    def _setup_environ_for_test(self):
        driver_environment = self._port.setup_environ_for_server(self._server_name)
        driver_environment['WPE_USE_HEADLESS_VIEW_BACKEND'] = "1"
        driver_environment['LOCAL_RESOURCE_ROOT'] = self._port.layout_tests_dir()
        driver_environment['DUMPRENDERTREE_TEMP'] = str(self._driver_tempdir)
        driver_environment['XDG_CACHE_HOME'] = self._port.host.filesystem.join(str(self._driver_tempdir), 'appcache')
        return driver_environment

    def _start(self, pixel_tests, per_test_args):
        super(HeadlessDriver, 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()