import logging
import os
from ConfigParser import ConfigParser

from sugar import env

_PYTHON_FACTORY='sugar-activity-factory'

class Bundle:
    """Info about an activity bundle. Wraps the activity.info file."""
    def __init__(self, path):
        self._name = None
        self._icon = None
        self._service_name = None
        self._show_launcher = True
        self._valid = True
        self._path = path
        self._activity_version = 0

        info_path = os.path.join(path, 'activity', 'activity.info')
        if os.path.isfile(info_path):
            self._parse_info(info_path)
        else:
            self._valid = False

    def _parse_info(self, info_path):
        cp = ConfigParser()
        cp.read([info_path])

        section = 'Activity'

        if cp.has_option(section, 'service_name'):
            self._service_name = cp.get(section, 'service_name')
        else:
            self._valid = False
            logging.error('%s must specify a service name' % self._path)

        if cp.has_option(section, 'name'):
            self._name = cp.get(section, 'name')
        else:
            self._valid = False
            logging.error('%s must specify a name' % self._path)

        if cp.has_option(section, 'class'):
            self._class = cp.get(section, 'class')
            self._exec = '%s %s --bundle-path="%s"' % (
              env.get_bin_path(_PYTHON_FACTORY), self._class, self.get_path())
        elif cp.has_option(section, 'exec'):
            self._class = None
            self._exec = cp.get(section, 'exec')
        else:
            self._exec = None
            self._valid = False
            logging.error('%s must specify exec or class' % self._path)

        if cp.has_option(section, 'show_launcher'):
            if cp.get(section, 'show_launcher') == 'no':
                self._show_launcher = False

        if cp.has_option(section, 'icon'):
            icon = cp.get(section, 'icon')
            activity_path = os.path.join(self._path, 'activity')
            self._icon = os.path.join(activity_path, icon + ".svg")

        if cp.has_option(section, 'activity_version'):
            self._activity_version = int(cp.get(section, 'activity_version'))

    def is_valid(self):
        return self._valid

    def get_path(self):
        """Get the activity bundle path."""
        return self._path

    def get_name(self):
        """Get the activity user visible name."""
        return self._name

    def get_service_name(self):
        """Get the activity service name"""
        return self._service_name

    def get_object_path(self):
        """Get the path to the service object"""
        return '/' + self._service_name.replace('.', '/')

    def get_default_type(self):
        """Get the type of the main network service which tracks presence
           and provides info about the activity, for example the title."""
        splitted = self.get_service_name().split('.')
        splitted.reverse()
        return '_' + '_'.join(splitted) + '._udp'

    def get_icon(self):
        """Get the activity icon name"""
        return self._icon

    def get_activity_version(self):
        """Get the activity version"""
        return self._activity_version

    def get_exec(self):
        """Get the command to execute to launch the activity factory"""
        return self._exec

    def get_class(self):
        """Get the main Activity class"""
        return self._exec

    def get_show_launcher(self):
        """Get whether there should be a visible launcher for the activity"""
        return self._show_launcher