#!/usr/bin/env python3

# Copyright (C) 2007, Red Hat, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import os
import sys
import dbus
import argparse

from dbus.mainloop.glib import DBusGMainLoop
DBusGMainLoop(set_as_default=True)

from sugar3.activity import activityfactory
from sugar3.bundle.activitybundle import ActivityBundle

parser = argparse.ArgumentParser("Launch a sugar activity")
parser.add_argument("bundle_id",
                    help="the bundle id of the activity")
parser.add_argument("-d", "--debug", action="store_true",
                    help="launch activity inside gdb")
parser.add_argument("-u", "--uri",
                    help='URI to load')

args = parser.parse_args()
print(args.bundle_id)
bus = dbus.SessionBus()
proxy = bus.get_object('org.laptop.Shell', '/org/laptop/Shell')
path = dbus.Interface(proxy, 'org.laptop.Shell').GetBundlePath(args.bundle_id)
if not path:
    print('Cannot find %s bundle.' % args.bundle_id)
    sys.exit(1)

activity = ActivityBundle(path)
cmd_args = activityfactory.get_command(activity)

if args.uri:
    cmd_args.extend(["--uri", args.uri])


def _which(exec_file):
    if 'PATH' in os.environ:
        envpath = os.environ['PATH']
    else:
        return None

    for path in envpath.split(os.pathsep):
        fullname = os.path.join(path, exec_file)
        if os.path.exists(fullname):
            return fullname

    return None


def _get_interpreter(exec_file):
    if os.path.exists(exec_file):
        abs_path = exec_file
    else:
        abs_path = _which(exec_file)
        if not abs_path:
            return exec_file

    f = open(abs_path)
    line = f.readline(100)
    if line.startswith('#!'):
        cmds = line[2:].strip().split(' ')
        cmds.append(abs_path)

        if '/usr/bin/env' in cmds:
            cmds.remove('/usr/bin/env')

        return cmds

    return exec_file


if args.debug:
    act_args = cmd_args
    cmd_args = ['gdb', '--args']
    cmd_args.extend(_get_interpreter(act_args.pop(0)))
    cmd_args.extend(act_args)

os.chdir(str(activity.get_path()))
os.execvpe(cmd_args[0], cmd_args, activityfactory.get_environment(activity))
