"""

:organization: Logilab

:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses

"""

import webbrowser

reload(webbrowser)

from sensor.Sensor import Sensor

from utils import datatypes, i18n

from cubicweb.dbapi import connect

_ = str

class RQLSensor(Sensor):

    def __init__(self, *args):

        global _; _ = i18n.Translator("rql-desklet")

        Sensor.__init__(self)

        # define configuration

        self._set_config_type("appid", datatypes.TYPE_STRING, "")

        self._set_config_type("user", datatypes.TYPE_STRING, "")

        self._set_config_type("passwd", datatypes.TYPE_SECRET_STRING, "")

        self._set_config_type("rql", datatypes.TYPE_STRING, "")

        self._set_config_type("url", datatypes.TYPE_STRING, "")

        self._set_config_type("delay", datatypes.TYPE_STRING, "600")

        # default timer

        self._add_timer(20, self.__update)

    def get_configurator(self):

        configurator = self._new_configurator()

        configurator.set_name(_("RQL"))

        configurator.add_title(_("CubicWeb source settings"))

        configurator.add_entry(_("ID",), "appid", _("The application id of this source"))

        configurator.add_entry(_("User",), "user", _("The user to connect to this source"))

        configurator.add_entry(_("Password",), "passwd", _("The user's password to connect to this source"))

        configurator.add_entry(_("URL",), "url", _("The url of the web interface for this source"))

        configurator.add_entry(_("RQL",), "rql", _("The rql query"))

        configurator.add_entry(_("Update interval",), "delay", _("Delay in seconds between updates"))

        return configurator

    def call_action(self, action, path, args=[]):

        index = path[-1]

        output = self._new_output()

#        import sys

#        print >>sys.stderr, action, path, args

        if action=="enter-line":

            # change background

            output.set('resultbg[%s]' % index, 'yellow')

        elif action=="leave-line":

            # change background

            output.set('resultbg[%s]' % index, 'black')

        elif action=="click-line":

            # open url

            output.set('resultbg[%s]' % index, 'black')

            webbrowser.open(self._urls[index])

        self._send_output(output)

    def __get_connection(self):

        try:

            return self._v_cnx

        except AttributeError:

            appid, user, passwd = self._get_config("appid"), self._get_config("user"), self._get_config("passwd")

            cnx = connect(database=appid, login=user, password=passwd)

            self._v_cnx = cnx

            return cnx

    def __run_query(self, output):

        base = self._get_config('url')

        rql = self._get_config('rql')

        cnx = self.__get_connection()

        cursor = cnx.cursor()

        try:

            rset = cursor.execute(rql)

        except:

            del self._v_cnx

            raise

        self._urls = []

        output.set('layout', 'vertical, 14')

        output.set('length', rset.rowcount)

        i = 0

        for line in rset:

            output.set('result[%s]' % i, ', '.join([str(v) for v in line[1:]]))

            output.set('resultbg[%s]' % i, 'black')

            try:

                self._urls.append(base % 'Any X WHERE X eid %s' % line[0])

            except:

                self._urls.append('')

            i += 1

    def __update(self):

        output = self._new_output()

        try:

            self.__run_query(output)

        except Exception, ex:

            import traceback

            traceback.print_exc()

            output.set('layout', 'vertical, 10')

            output.set('length', 1)

            output.set('result[0]', str(ex))

        self._send_output(output)

        self._add_timer(int(self._get_config('delay'))*1000, self.__update)

def new_sensor(args):

    return RQLSensor(*args)