// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-

const Gio = imports.gi.Gio;
const Lang = imports.lang;
const NMGtk = imports.gi.NMGtk;
const Signals = imports.signals;

// _getMobileProvidersDatabase:
//
// Gets the database of mobile providers, with references between MCCMNC/SID and
// operator name
//
let _mpd;
function _getMobileProvidersDatabase() {
    if (_mpd == null) {
        try {
            _mpd = new NMGtk.MobileProvidersDatabase();
            _mpd.init(null);
        } catch (e) {
            log(e.message);
            _mpd = null;
        }
    }

    return _mpd;
}

// _findProviderForMccMnc:
// @operator_name: operator name
// @operator_code: operator code
//
// Given an operator name string (which may not be a real operator name) and an
// operator code string, tries to find a proper operator name to display.
//
function _findProviderForMccMnc(operator_name, operator_code) {
    if (operator_name) {
        if (operator_name.length != 0 &&
            (operator_name.length > 6 || operator_name.length < 5)) {
            // this looks like a valid name, i.e. not an MCCMNC (that some
            // devices return when not yet connected
            return operator_name;
        }

        if (isNaN(parseInt(operator_name))) {
            // name is definitely not a MCCMNC, so it may be a name
            // after all; return that
            return operator_name;
        }
    }

    let needle;
    if ((!operator_name || operator_name.length == 0) && operator_code)
        needle = operator_code;
    else if (operator_name && (operator_name.length == 6 || operator_name.length == 5))
        needle = operator_name;
    else // nothing to search
        return null;

    let mpd = _getMobileProvidersDatabase();
    if (mpd) {
        let provider = mpd.lookup_3gpp_mcc_mnc(needle);
        if (provider)
            return provider.get_name();
    }
    return null;
}

// _findProviderForSid:
// @sid: System Identifier of the serving CDMA network
//
// Tries to find the operator name corresponding to the given SID
//
function _findProviderForSid(sid) {
    if (sid == 0)
        return null;

    let mpd = _getMobileProvidersDatabase();
    if (mpd) {
        let provider = mpd.lookup_cdma_sid(sid);
        if (provider)
            return provider.get_name();
    }
    return null;
}


//------------------------------------------------------------------------------
// Support for the old ModemManager interface (MM < 0.7)
//------------------------------------------------------------------------------


// The following are not the complete interfaces, just the methods we need
// (or may need in the future)

const ModemGsmNetworkInterface = 
    '<node> \
        <interface name="org.freedesktop.ModemManager.Modem.Gsm.Network"> \
            <method name="GetRegistrationInfo"> \
                <arg type="(uss)" direction="out" /> \
            </method> \
            <method name="GetSignalQuality"> \
                <arg type="u" direction="out" /> \
            </method> \
            <property name="AccessTechnology" type="u" access="read" /> \
            <signal name="SignalQuality"> \
                <arg type="u" direction="out" /> \
            </signal> \
            <signal name="RegistrationInfo"> \
                <arg type="u" direction="out" /> \
                <arg type="s" direction="out" /> \
                <arg type="s" direction="out" /> \
            </signal> \
        </interface> \
    </node>';

const ModemGsmNetworkProxy = Gio.DBusProxy.makeProxyWrapper(ModemGsmNetworkInterface);

const ModemCdmaInterface =
    '<node> \
        <interface name="org.freedesktop.ModemManager.Modem.Cdma"> \
            <method name="GetSignalQuality"> \
                <arg type="u" direction="out" /> \
            </method> \
            <method name="GetServingSystem"> \
                <arg type="(usu)" direction="out" /> \
            </method> \
            <signal name="SignalQuality"> \
                <arg type="u" direction="out" /> \
            </signal> \
        </interface> \
    </node>';

const ModemCdmaProxy = Gio.DBusProxy.makeProxyWrapper(ModemCdmaInterface);

const ModemGsm = new Lang.Class({
    Name: 'ModemGsm',

    _init: function(path) {
        this._proxy = new ModemGsmNetworkProxy(Gio.DBus.system, 'org.freedesktop.ModemManager', path);

        this.signal_quality = 0;
        this.operator_name = null;

        // Code is duplicated because the function have different signatures
        this._proxy.connectSignal('SignalQuality', Lang.bind(this, function(proxy, sender, [quality]) {
            this.signal_quality = quality;
            this.emit('notify::signal-quality');
        }));
        this._proxy.connectSignal('RegistrationInfo', Lang.bind(this, function(proxy, sender, [status, code, name]) {
            this.operator_name = _findProviderForMccMnc(name, code);
            this.emit('notify::operator-name');
        }));
        this._proxy.GetRegistrationInfoRemote(Lang.bind(this, function([result], err) {
            if (err) {
                log(err);
                return;
            }

            let [status, code, name] = result;
            this.operator_name = _findProviderForMccMnc(name, code);
            this.emit('notify::operator-name');
        }));
        this._proxy.GetSignalQualityRemote(Lang.bind(this, function(result, err) {
            if (err) {
                // it will return an error if the device is not connected
                this.signal_quality = 0;
            } else {
                let [quality] = result;
                this.signal_quality = quality;
            }
            this.emit('notify::signal-quality');
        }));
    }
});
Signals.addSignalMethods(ModemGsm.prototype);

const ModemCdma = new Lang.Class({
    Name: 'ModemCdma',

    _init: function(path) {
        this._proxy = new ModemCdmaProxy(Gio.DBus.system, 'org.freedesktop.ModemManager', path);

        this.signal_quality = 0;
        this.operator_name = null;
        this._proxy.connectSignal('SignalQuality', Lang.bind(this, function(proxy, sender, params) {
            this.signal_quality = params[0];
            this.emit('notify::signal-quality');

            // receiving this signal means the device got activated
            // and we can finally call GetServingSystem
            if (this.operator_name == null)
                this._refreshServingSystem();
        }));
        this._proxy.GetSignalQualityRemote(Lang.bind(this, function(result, err) {
            if (err) {
                // it will return an error if the device is not connected
                this.signal_quality = 0;
            } else {
                let [quality] = result;
                this.signal_quality = quality;
            }
            this.emit('notify::signal-quality');
        }));
    },

    _refreshServingSystem: function() {
        this._proxy.GetServingSystemRemote(Lang.bind(this, function([result], err) {
            if (err) {
                // it will return an error if the device is not connected
                this.operator_name = null;
            } else {
                let [bandClass, band, sid] = result;

                this.operator_name = _findProviderForSid(sid)
            }
            this.emit('notify::operator-name');
        }));
    }
});
Signals.addSignalMethods(ModemCdma.prototype);


//------------------------------------------------------------------------------
// Support for the new ModemManager1 interface (MM >= 0.7)
//------------------------------------------------------------------------------

const BroadbandModemInterface = 
    '<node> \
        <interface name="org.freedesktop.ModemManager1.Modem"> \
            <property name="SignalQuality" type="(ub)" access="read" /> \
        </interface> \
    </node>';

const BroadbandModemProxy = Gio.DBusProxy.makeProxyWrapper(BroadbandModemInterface);

const BroadbandModem3gppInterface = 
    '<node> \
        <interface name="org.freedesktop.ModemManager1.Modem.Modem3gpp"> \
            <property name="OperatorCode" type="s" access="read" /> \
            <property name="OperatorName" type="s" access="read" /> \
        </interface> \
    </node>';

const BroadbandModem3gppProxy = Gio.DBusProxy.makeProxyWrapper(BroadbandModem3gppInterface);

const BroadbandModemCdmaInterface =
    '<node> \
        <interface name="org.freedesktop.ModemManager1.Modem.ModemCdma"> \
            <property name="Sid" type="u" access="read" /> \
        </interface> \
    </node>';

const BroadbandModemCdmaProxy = Gio.DBusProxy.makeProxyWrapper(BroadbandModemCdmaInterface);

const BroadbandModem = new Lang.Class({
    Name: 'BroadbandModem',

    _init: function(path, capabilities) {
        this._proxy = new BroadbandModemProxy(Gio.DBus.system, 'org.freedesktop.ModemManager1', path);
        this._proxy_3gpp = new BroadbandModem3gppProxy(Gio.DBus.system, 'org.freedesktop.ModemManager1', path);
        this._proxy_cdma = new BroadbandModemCdmaProxy(Gio.DBus.system, 'org.freedesktop.ModemManager1', path);
        this._capabilities = capabilities;

        this._proxy.connect('g-properties-changed', Lang.bind(this, function(proxy, properties) {
            if ('SignalQuality' in properties.deep_unpack())
                this._reloadSignalQuality();
        }));
        this._reloadSignalQuality();

        this._proxy_3gpp.connect('g-properties-changed', Lang.bind(this, function(proxy, properties) {
            let unpacked = properties.deep_unpack();
            if ('OperatorName' in unpacked || 'OperatorCode' in unpacked)
                this._reload3gppOperatorName();
        }));
        this._reload3gppOperatorName();

        this._proxy_cdma.connect('g-properties-changed', Lang.bind(this, function(proxy, properties) {
            let unpacked = properties.deep_unpack();
            if ('Nid' in unpacked || 'Sid' in unpacked)
                this._reloadCdmaOperatorName();
        }));
        this._reloadCdmaOperatorName();
    },

    _reloadSignalQuality: function() {
        let [quality, recent] = this._proxy.SignalQuality;
        this.signal_quality = quality;
        this.emit('notify::signal-quality');
    },

    _reloadOperatorName: function() {
        let new_name = "";
        if (this.operator_name_3gpp && this.operator_name_3gpp.length > 0)
            new_name += this.operator_name_3gpp;

        if (this.operator_name_cdma && this.operator_name_cdma.length > 0) {
            if (new_name != "")
                new_name += ", ";
            new_name += this.operator_name_cdma;
        }

        this.operator_name = new_name;
        this.emit('notify::operator-name');
    },

    _reload3gppOperatorName: function() {
        let name = this._proxy_3gpp.OperatorName;
        let code = this._proxy_3gpp.OperatorCode;
        this.operator_name_3gpp = _findProviderForMccMnc(name, code);
        this._reloadOperatorName();
    },

    _reloadCdmaOperatorName: function() {
        let sid = this._proxy_cdma.Sid;
        this.operator_name_cdma = _findProviderForSid(sid);
        this._reloadOperatorName();
    }
});
Signals.addSignalMethods(BroadbandModem.prototype);
