# Copyright (C) 2016 Igalia S.L. All rights reserved.
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import logging
import os

from webkitpy.port.driver import Driver

_log = logging.getLogger(__name__)


class WaylandDriver(Driver):
    @staticmethod
    def check_driver(port):
        if not any(wayland_env_var in os.environ for wayland_env_var in ['WAYLAND_DISPLAY', 'WAYLAND_SOCKET']):
            _log.error('WAYLAND_DISPLAY or WAYLAND_SOCKET not found in the environment. Cannot run tests.')
            return False
        return True

    def _setup_environ_for_test(self):
        driver_environment = self._port.setup_environ_for_server(self._server_name)
        self._port._copy_value_from_environ_if_set(driver_environment, 'WAYLAND_DISPLAY')
        self._port._copy_value_from_environ_if_set(driver_environment, 'WAYLAND_SOCKET')
        driver_environment['GDK_BACKEND'] = 'wayland'
        driver_environment['EGL_PLATFORM'] = 'wayland'
        driver_environment['LOCAL_RESOURCE_ROOT'] = self._port.layout_tests_dir()
        if self._driver_tempdir is not None:
            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(WaylandDriver, self).stop()
        self._driver_tempdir = self._port._driver_tempdir(self._target_host)
        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()