# sat_monitor - zavai satellite monitor
#
# Copyright (C) 2009  Enrico Zini <enrico@enricozini.org>
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import gtk
import sys
import gettext
_ = gettext.gettext
import zavai

SAT_QI_NAMES = {
    0: _("idle"),
    1: _("searching"),
    2: _("signal acquired"),
    3: _("signal unusable"),
    4: _("code lock"),
    5: _("code&carrier lock"),
    6: _("code&carrier lock"),
    7: _("receiving data")
}

class SatelliteMonitor(gtk.VBox, zavai.Resource):
    def __init__(self, registry, name, **kw):
        super(SatelliteMonitor, self).__init__()

        self.gps = registry.resource("gps")

        self.store = gtk.ListStore(str, str, str, str, str, str, str, str, str, str, str)
        self.view = gtk.TreeView(self.store)

        renderer = gtk.CellRendererText()
        for idx, name in enumerate((_("CH"), _("ID"), _("SN"), _("ELE"), _("AZI"),
                     _("Used"), _("Diff"), _("Alm"), _("Eph"),
                     _("Bad"), _("Status"))):
            col = gtk.TreeViewColumn(name)
            col.pack_start(renderer, False)
            col.add_attribute(renderer, "text", idx)
            self.view.append_column(col)

        self.back = registry.menu_link("gps", _("Back"))
        self.back.connect("clicked", self.stop)

        self.pack_start(self.view, True, True)
        self.pack_start(self.back, False, False)

    def shutdown(self):
        self.stop()

    def start(self, *args):
        self.gps.monitor.connect(self.on_ubxdebug_packet)

    def stop(self, *args):
        self.gps.monitor.disconnect(self.on_ubxdebug_packet)

    def on_ubxdebug_packet(self, clid, length, data):
        # In zhone it is cbUBXDebugPacket
        #if clid == "NAV-STATUS" and data:
        #    i = ["%s: %d" % (k, data[0][k]) for k in sorted(data[0].keys())]
        #    zavai.info("Status:", " ".join(i))
        ##    if data[0]['TTFF']:
        ##        zavai.info("TTFF: %f", data[0]['TTFF']/1000.0)
        if clid == "NAV-SVINFO":
            self.handle_ubx_sat_data(data[1:])
        #else:
        #    zavai.info("gps got ubxdebug packet", clid)
        #    zavai.info("DATA:", data)

    def handle_ubx_sat_data(self, ubxinfo):
        #zavai.info("CH ID SN ELE AZI Used Diff Alm Eph Bad Status")
        self.store.clear()
        for sv in ubxinfo:
            if sv["CNO"] == 0: continue
            svid = sv["SVID"]
            used = sv["Flags"] & 0x01
            diff = sv["Flags"] & 0x02
            almoreph = sv["Flags"] & 0x04
            eph = sv["Flags"] & 0x08
            bad = sv["Flags"] & 0x10
            qi = ("%i: " % sv["QI"]) + SAT_QI_NAMES.get(sv["QI"], _("Unknown"))
            self.store.append([
                "%2d" % sv["chn"],
                "%2d" % sv["SVID"],
                "%2d" % sv["CNO"],
                "%3d" % sv["Elev"],
                "%3d" % sv["Azim"],
                used and "used" or "",
                diff and "diff" or "",
                almoreph and "alm" or "",
                eph and "eph" or "",
                bad and "bad" or "",
                qi])

def start_monitor(registry):
    monitor = registry.resource("app.satellite_monitor")
    registry.resource("app").show_widget("app.satellite_monitor")
    monitor.start()

def init(conf = None, registry = None, **kw):
    registry.register("app.satellite_monitor", SatelliteMonitor)
    menu_gps = registry.menu("main.gps")

    monitor = zavai.MenuButton(_("Monitor"))
    monitor.connect("clicked", lambda *args: start_monitor(registry))
    menu_gps.add_child(monitor)

    # TODO: automate this in registry
    registry.menu("main").add_child(registry.menu_link("main.gps", _("GPS")))