#
# ipcinterface.py
#
# Copyright (C) 2008 Andrew Resch ('andar') <andrewresch@gmail.com>
# 
# Deluge is free software.
# 
# You may 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.
# 
# deluge 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 deluge.    If not, write to:
# 	The Free Software Foundation, Inc.,
# 	51 Franklin Street, Fifth Floor
# 	Boston, MA    02110-1301, USA.
#
#    In addition, as a special exception, the copyright holders give
#    permission to link the code of portions of this program with the OpenSSL
#    library.
#    You must obey the GNU General Public License in all respects for all of
#    the code used other than OpenSSL. If you modify file(s) with this
#    exception, you may extend this exception to your version of the file(s),
#    but you are not obligated to do so. If you do not wish to do so, delete
#    this exception statement from your version. If you delete this exception
#    statement from all source files in the program, then also delete it here.

import sys
import os.path

import deluge.component as component
from deluge.ui.client import aclient as client
import deluge.common
from deluge.configmanager import ConfigManager
from deluge.log import LOG as log

class IPCInterface(component.Component):
    def __init__(self, args):
        component.Component.__init__(self, "IPCInterface")
        
        if deluge.common.windows_check():
            # If we're on windows we need to check the global mutex to see if deluge is
            # already running.
            import win32event
            import win32api
            import winerror
            self.mutex = win32event.CreateMutex(None, False, "deluge")
            if win32api.GetLastError() == winerror.ERROR_ALREADY_EXISTS:
                # We already have a running session, send a XMLRPC to the existing session
                config = ConfigManager("gtkui.conf")
                uri = "http://localhost:" + str(config["signal_port"])
                import deluge.xmlrpclib as xmlrpclib
                rpc = xmlrpclib.ServerProxy(uri, allow_none=True)
                rpc.emit_signal("args_from_external", args)
                sys.exit(0)
            else:
                process_args(args)
        else:
            try:
                import dbusinterface
                self.dbusinterface = dbusinterface.DbusInterface(args)
            except Exception, e:
                log.warning("Unable to start DBUS component: %s", e)

    def shutdown(self):
        if deluge.common.windows_check():
            import win32api
            win32api.CloseHandle(self.mutex)
                            
def process_args(args):
    """Process arguments sent to already running Deluge"""
    # Pythonize the values from Dbus
    dbus_args = args
    args = []
    for arg in dbus_args:
        args.append(str(arg))
    log.debug("Processing args from other process: %s", args)
    if not client.connected():
        # We're not connected so add these to the queue
        log.debug("Not connected to host.. Adding to queue.")
        component.get("QueuedTorrents").add_to_queue(args)
        return
    config = ConfigManager("gtkui.conf")        
    for arg in args:
        if deluge.common.is_url(arg):
            log.debug("Attempting to add %s from external source..",
                arg)
            if config["interactive_add"]:
                component.get("AddTorrentDialog").add_from_url(arg)
                component.get("AddTorrentDialog").show(config["focus_add_dialog"])
            else:
                client.add_torrent_url(arg)
        else:
            # Just a file
            log.debug("Attempting to add %s from external source..", 
                os.path.abspath(arg))
            if config["interactive_add"]:
                component.get("AddTorrentDialog").add_from_files([os.path.abspath(arg)])
                component.get("AddTorrentDialog").show(config["focus_add_dialog"])
            else:
                client.add_torrent_file([os.path.abspath(arg)])