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"""Chromium Mac implementation of the Port interface."""

import logging
import signal

from webkitpy.layout_tests.port import chromium


_log = logging.getLogger(__name__)


class MacPort(chromium.ChromiumPort):
    SUPPORTED_VERSIONS = ('snowleopard', 'lion', 'retina', 'mountainlion')
    port_name = 'mac'

    FALLBACK_PATHS = { 'mountainlion': [ 'mac' ]}
    FALLBACK_PATHS['lion'] = ['mac-lion'] + FALLBACK_PATHS['mountainlion']
    FALLBACK_PATHS['snowleopard'] = ['mac-snowleopard'] + FALLBACK_PATHS['lion']

    # FIXME: We treat Retina (High-DPI) devices as if they are running
    # a different operating system version. This isn't accurate, but will work until
    # we need to test and support baselines across multiple O/S versions.
    FALLBACK_PATHS['retina'] = ['mac-retina'] + FALLBACK_PATHS['mountainlion']

    DEFAULT_BUILD_DIRECTORIES = ('xcodebuild', 'out')

    CONTENT_SHELL_NAME = 'Content Shell'

    @classmethod
    def determine_full_port_name(cls, host, options, port_name):
        if port_name.endswith('mac'):
            if host.platform.is_highdpi():
                return "mac-retina"
            return port_name + '-' + host.platform.os_version
        return port_name

    def __init__(self, host, port_name, **kwargs):
        chromium.ChromiumPort.__init__(self, host, port_name, **kwargs)
        self._version = port_name[port_name.index('mac-') + len('mac-'):]
        assert self._version in self.SUPPORTED_VERSIONS

    def _modules_to_search_for_symbols(self):
        return [self._build_path('ffmpegsumo.so')]

    def check_build(self, needs_http, printer):
        result = chromium.ChromiumPort.check_build(self, needs_http, printer)
        if not result:
            _log.error('For complete Mac build requirements, please see:')
            _log.error('')
            _log.error('    http://code.google.com/p/chromium/wiki/MacBuildInstructions')

        return result

    def operating_system(self):
        return 'mac'

    #
    # PROTECTED METHODS
    #

    def _lighttpd_path(self, *comps):
        return self.path_from_chromium_base('third_party', 'lighttpd', 'mac', *comps)

    def _wdiff_missing_message(self):
        return 'wdiff is not installed; please install from MacPorts or elsewhere'

    def _path_to_apache(self):
        return '/usr/sbin/httpd'

    def _path_to_apache_config_file(self):
        return self._filesystem.join(self.layout_tests_dir(), 'http', 'conf', 'apache2-httpd.conf')

    def _path_to_lighttpd(self):
        return self._lighttpd_path('bin', 'lighttpd')

    def _path_to_lighttpd_modules(self):
        return self._lighttpd_path('lib')

    def _path_to_lighttpd_php(self):
        return self._lighttpd_path('bin', 'php-cgi')

    def _path_to_driver(self, configuration=None):
        # FIXME: make |configuration| happy with case-sensitive file systems.
        return self._build_path_with_configuration(configuration, self.driver_name() + '.app', 'Contents', 'MacOS', self.driver_name())

    def _path_to_helper(self):
        binary_name = 'LayoutTestHelper'
        return self._build_path(binary_name)

    def _path_to_wdiff(self):
        return 'wdiff'