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from StringIO import StringIO

from webkitpy.common.system.environment import Environment
from webkitpy.common.system.executive_mock import MockExecutive
from webkitpy.common.system.filesystem_mock import MockFileSystem
from webkitpy.common.system.platforminfo_mock import MockPlatformInfo
from webkitpy.common.system.user_mock import MockUser
from webkitpy.common.system.workspace_mock import MockWorkspace


class MockSystemHost(object):
    def __init__(self, log_executive=False, executive_throws_when_run=None, os_name=None, os_version=None, executive=None, filesystem=None):
        self.executable = 'python'
        self.executive = executive or MockExecutive(should_log=log_executive, should_throw_when_run=executive_throws_when_run)
        self.filesystem = filesystem or MockFileSystem()
        self.user = MockUser()
        self.platform = MockPlatformInfo()
        if os_name:
            self.platform.os_name = os_name
        if os_version:
            self.platform.os_version = os_version

        # FIXME: Should this take pointers to the filesystem and the executive?
        self.workspace = MockWorkspace()

        self.stdin = StringIO()
        self.stdout = StringIO()
        self.stderr = StringIO()

    def copy_current_environment(self):
        return Environment({"MOCK_ENVIRON_COPY": '1'})

    def print_(self, *args, **kwargs):
        sep = kwargs.get('sep', ' ')
        end = kwargs.get('end', '\n')
        stream = kwargs.get('stream', self.stdout)
        stream.write(sep.join([str(arg) for arg in args]) + end)