//
// Copyright 2010 Ettus Research LLC
//
// 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/>.
//

#include "wrapper_utils.hpp"
#include <uhd/usrp/multi_usrp.hpp>
#include <uhd/usrp/tune_helper.hpp>
#include <uhd/utils/assert.hpp>
#include <uhd/utils/warning.hpp>
#include <uhd/utils/gain_group.hpp>
#include <uhd/usrp/subdev_props.hpp>
#include <uhd/usrp/mboard_props.hpp>
#include <uhd/usrp/device_props.hpp>
#include <uhd/usrp/dboard_props.hpp>
#include <uhd/usrp/dsp_props.hpp>
#include <boost/thread.hpp>
#include <boost/foreach.hpp>
#include <boost/format.hpp>
#include <stdexcept>
#include <iostream>

using namespace uhd;
using namespace uhd::usrp;

const std::string multi_usrp::ALL_GAINS = "";

/***********************************************************************
 * Simple USRP Implementation
 **********************************************************************/
class multi_usrp_impl : public multi_usrp{
public:
    multi_usrp_impl(const device_addr_t &addr){
        _dev = device::make(addr);
    }

    device::sptr get_device(void){
        return _dev;
    }

    /*******************************************************************
     * Mboard methods
     ******************************************************************/
    std::string get_pp_string(void){
        std::string buff = str(boost::format(
            "Multi USRP:\n"
            "  Device: %s\n"
        )
            % (*_dev)[DEVICE_PROP_NAME].as<std::string>()
        );
        for (size_t m = 0; m < get_num_mboards(); m++){
            buff += str(boost::format(
                "  Mboard %d: %s\n"
            ) % m
                % _mboard(m)[MBOARD_PROP_NAME].as<std::string>()
            );
        }

        //----------- rx side of life ----------------------------------
        for (size_t m = 0, chan = 0; m < get_num_mboards(); m++){
            buff += str(boost::format(
                "  RX DSP %d: %s\n"
            ) % m
                % _rx_dsp(m)[DSP_PROP_NAME].as<std::string>()
            );
            for (; chan < (m + 1)*get_rx_subdev_spec(m).size(); chan++){
                buff += str(boost::format(
                    "  RX Channel: %u\n"
                    "    RX Dboard: %s\n"
                    "    RX Subdev: %s\n"
                ) % chan
                    % _rx_dboard(chan)[DBOARD_PROP_NAME].as<std::string>()
                    % _rx_subdev(chan)[SUBDEV_PROP_NAME].as<std::string>()
                );
            }
        }

        //----------- tx side of life ----------------------------------
        for (size_t m = 0, chan = 0; m < get_num_mboards(); m++){
            buff += str(boost::format(
                "  TX DSP %d: %s\n"
            ) % m
                % _tx_dsp(m)[DSP_PROP_NAME].as<std::string>()
            );
            for (; chan < (m + 1)*get_tx_subdev_spec(m).size(); chan++){
                buff += str(boost::format(
                    "  TX Channel: %u\n"
                    "    TX Dboard: %s\n"
                    "    TX Subdev: %s\n"
                ) % chan
                    % _tx_dboard(chan)[DBOARD_PROP_NAME].as<std::string>()
                    % _tx_subdev(chan)[SUBDEV_PROP_NAME].as<std::string>()
                );
            }
        }

        return buff;
    }

    std::string get_mboard_name(size_t mboard){
        return _mboard(mboard)[MBOARD_PROP_NAME].as<std::string>();
    }

    time_spec_t get_time_now(void){
        return _mboard(0)[MBOARD_PROP_TIME_NOW].as<time_spec_t>();
    }

    void set_time_next_pps(const time_spec_t &time_spec){
        for (size_t m = 0; m < get_num_mboards(); m++){
            _mboard(m)[MBOARD_PROP_TIME_NEXT_PPS] = time_spec;
        }
    }

    void set_time_unknown_pps(const time_spec_t &time_spec){
        std::cout << "Set time with unknown pps edge:" << std::endl;
        std::cout << "    1) set times next pps (race condition)" << std::endl;
        set_time_next_pps(time_spec);
        boost::this_thread::sleep(boost::posix_time::seconds(1));

        std::cout << "    2) catch seconds rollover at pps edge" << std::endl;
        time_t last_secs = 0, curr_secs = 0;
        while(curr_secs == last_secs){
            last_secs = curr_secs;
            curr_secs = get_time_now().get_full_secs();
        }

        std::cout << "    3) set times next pps (synchronously)" << std::endl;
        set_time_next_pps(time_spec);
        boost::this_thread::sleep(boost::posix_time::seconds(1));

        //verify that the time registers are read to be within a few RTT
        for (size_t m = 1; m < get_num_mboards(); m++){
            time_spec_t time_0 = _mboard(0)[MBOARD_PROP_TIME_NOW].as<time_spec_t>();
            time_spec_t time_i = _mboard(m)[MBOARD_PROP_TIME_NOW].as<time_spec_t>();
            if (time_i < time_0 or (time_i - time_0) > time_spec_t(0.01)){ //10 ms: greater than RTT but not too big
                uhd::warning::post(str(boost::format(
                    "Detected time deviation between board %d and board 0.\n"
                    "Board 0 time is %f seconds.\n"
                    "Board %d time is %f seconds.\n"
                ) % m % time_0.get_real_secs() % m % time_i.get_real_secs()));
            }
        }
    }

    bool get_time_synchronized(void){
        for (size_t m = 1; m < get_num_mboards(); m++){
            time_spec_t time_0 = _mboard(0)[MBOARD_PROP_TIME_NOW].as<time_spec_t>();
            time_spec_t time_i = _mboard(m)[MBOARD_PROP_TIME_NOW].as<time_spec_t>();
            if (time_i < time_0 or (time_i - time_0) > time_spec_t(0.01)) return false;
        }
        return true;
    }

    void issue_stream_cmd(const stream_cmd_t &stream_cmd){
        for (size_t m = 0; m < get_num_mboards(); m++){
            _mboard(m)[MBOARD_PROP_STREAM_CMD] = stream_cmd;
        }
    }

    void set_clock_config(const clock_config_t &clock_config, size_t mboard){
        if (mboard != ALL_MBOARDS){
            _mboard(mboard)[MBOARD_PROP_CLOCK_CONFIG] = clock_config;
            return;
        }
        for (size_t m = 0; m < get_num_mboards(); m++){
            set_clock_config(clock_config, m);
        }
    }

    size_t get_num_mboards(void){
        return (*_dev)[DEVICE_PROP_MBOARD_NAMES].as<prop_names_t>().size();
    }

    /*******************************************************************
     * RX methods
     ******************************************************************/
    void set_rx_subdev_spec(const subdev_spec_t &spec, size_t mboard){
        if (mboard != ALL_MBOARDS){
            _mboard(mboard)[MBOARD_PROP_RX_SUBDEV_SPEC] = spec;
            return;
        }
        for (size_t m = 0; m < get_num_mboards(); m++){
            set_rx_subdev_spec(spec, m);
        }
    }

    subdev_spec_t get_rx_subdev_spec(size_t mboard){
        return _mboard(mboard)[MBOARD_PROP_RX_SUBDEV_SPEC].as<subdev_spec_t>();
    }

    size_t get_rx_num_channels(void){
        return rx_cpm()*get_num_mboards(); //total num channels
    }

    std::string get_rx_subdev_name(size_t chan){
        return _rx_subdev(chan)[SUBDEV_PROP_NAME].as<std::string>();
    }

    void set_rx_rate(double rate){
        for (size_t m = 0; m < get_num_mboards(); m++){
            _rx_dsp(m)[DSP_PROP_HOST_RATE] = rate;
        }
        do_samp_rate_warning_message(rate, get_rx_rate(), "RX");
    }

    double get_rx_rate(void){
        return _rx_dsp(0)[DSP_PROP_HOST_RATE].as<double>();
    }

    tune_result_t set_rx_freq(const tune_request_t &tune_request, size_t chan){
        tune_result_t r = tune_rx_subdev_and_dsp(_rx_subdev(chan), _rx_dsp(chan/rx_cpm()), chan%rx_cpm(), tune_request);
        do_tune_freq_warning_message(tune_request.target_freq, get_rx_freq(chan), "RX");
        return r;
    }

    double get_rx_freq(size_t chan){
        return derive_freq_from_rx_subdev_and_dsp(_rx_subdev(chan), _rx_dsp(chan/rx_cpm()), chan%rx_cpm());
    }

    freq_range_t get_rx_freq_range(size_t chan){
        return add_dsp_shift(_rx_subdev(chan)[SUBDEV_PROP_FREQ_RANGE].as<freq_range_t>(), _rx_dsp(chan/rx_cpm()));
    }

    void set_rx_gain(float gain, const std::string &name, size_t chan){
        return _rx_gain_group(chan)->set_value(gain, name);
    }

    float get_rx_gain(const std::string &name, size_t chan){
        return _rx_gain_group(chan)->get_value(name);
    }

    gain_range_t get_rx_gain_range(const std::string &name, size_t chan){
        return _rx_gain_group(chan)->get_range(name);
    }

    std::vector<std::string> get_rx_gain_names(size_t chan){
        return _rx_gain_group(chan)->get_names();
    }

    void set_rx_antenna(const std::string &ant, size_t chan){
        _rx_subdev(chan)[SUBDEV_PROP_ANTENNA] = ant;
    }

    std::string get_rx_antenna(size_t chan){
        return _rx_subdev(chan)[SUBDEV_PROP_ANTENNA].as<std::string>();
    }

    std::vector<std::string> get_rx_antennas(size_t chan){
        return _rx_subdev(chan)[SUBDEV_PROP_ANTENNA_NAMES].as<prop_names_t>();
    }

    bool get_rx_lo_locked(size_t chan){
        return _rx_subdev(chan)[SUBDEV_PROP_LO_LOCKED].as<bool>();
    }

    void set_rx_bandwidth(double bandwidth, size_t chan){
        _rx_subdev(chan)[SUBDEV_PROP_BANDWIDTH] = bandwidth;
    }

    double get_rx_bandwidth(size_t chan){
        return _rx_subdev(chan)[SUBDEV_PROP_BANDWIDTH].as<double>();
    }

    float read_rssi(size_t chan){
        return _rx_subdev(chan)[SUBDEV_PROP_RSSI].as<float>();
    }

    dboard_iface::sptr get_rx_dboard_iface(size_t chan){
        return _rx_dboard(chan)[DBOARD_PROP_DBOARD_IFACE].as<dboard_iface::sptr>();
    }

    /*******************************************************************
     * TX methods
     ******************************************************************/
    void set_tx_subdev_spec(const subdev_spec_t &spec, size_t mboard){
        if (mboard != ALL_MBOARDS){
            _mboard(mboard)[MBOARD_PROP_TX_SUBDEV_SPEC] = spec;
            return;
        }
        for (size_t m = 0; m < get_num_mboards(); m++){
            set_tx_subdev_spec(spec, m);
        }
    }

    subdev_spec_t get_tx_subdev_spec(size_t mboard){
        return _mboard(mboard)[MBOARD_PROP_TX_SUBDEV_SPEC].as<subdev_spec_t>();
    }

    std::string get_tx_subdev_name(size_t chan){
        return _tx_subdev(chan)[SUBDEV_PROP_NAME].as<std::string>();
    }

    size_t get_tx_num_channels(void){
        return tx_cpm()*get_num_mboards(); //total num channels
    }

    void set_tx_rate(double rate){
        for (size_t m = 0; m < get_num_mboards(); m++){
            _tx_dsp(m)[DSP_PROP_HOST_RATE] = rate;
        }
        do_samp_rate_warning_message(rate, get_tx_rate(), "TX");
    }

    double get_tx_rate(void){
        return _tx_dsp(0)[DSP_PROP_HOST_RATE].as<double>();
    }

    tune_result_t set_tx_freq(const tune_request_t &tune_request, size_t chan){
        tune_result_t r = tune_tx_subdev_and_dsp(_tx_subdev(chan), _tx_dsp(chan/tx_cpm()), chan%tx_cpm(), tune_request);
        do_tune_freq_warning_message(tune_request.target_freq, get_tx_freq(chan), "TX");
        return r;
    }

    double get_tx_freq(size_t chan){
        return derive_freq_from_tx_subdev_and_dsp(_tx_subdev(chan), _tx_dsp(chan/tx_cpm()), chan%tx_cpm());
    }

    freq_range_t get_tx_freq_range(size_t chan){
        return add_dsp_shift(_tx_subdev(chan)[SUBDEV_PROP_FREQ_RANGE].as<freq_range_t>(), _tx_dsp(chan/tx_cpm()));
    }

    void set_tx_gain(float gain, const std::string &name, size_t chan){
        return _tx_gain_group(chan)->set_value(gain, name);
    }

    float get_tx_gain(const std::string &name, size_t chan){
        return _tx_gain_group(chan)->get_value(name);
    }

    gain_range_t get_tx_gain_range(const std::string &name, size_t chan){
        return _tx_gain_group(chan)->get_range(name);
    }

    std::vector<std::string> get_tx_gain_names(size_t chan){
        return _tx_gain_group(chan)->get_names();
    }

    void set_tx_antenna(const std::string &ant, size_t chan){
        _tx_subdev(chan)[SUBDEV_PROP_ANTENNA] = ant;
    }

    std::string get_tx_antenna(size_t chan){
        return _tx_subdev(chan)[SUBDEV_PROP_ANTENNA].as<std::string>();
    }

    std::vector<std::string> get_tx_antennas(size_t chan){
        return _tx_subdev(chan)[SUBDEV_PROP_ANTENNA_NAMES].as<prop_names_t>();
    }

    bool get_tx_lo_locked(size_t chan){
        return _tx_subdev(chan)[SUBDEV_PROP_LO_LOCKED].as<bool>();
    }

    void set_tx_bandwidth(double bandwidth, size_t chan){
        _tx_subdev(chan)[SUBDEV_PROP_BANDWIDTH] = bandwidth;
    }

    double get_tx_bandwidth(size_t chan){
        return _tx_subdev(chan)[SUBDEV_PROP_BANDWIDTH].as<double>();
    }

    dboard_iface::sptr get_tx_dboard_iface(size_t chan){
        return _tx_dboard(chan)[DBOARD_PROP_DBOARD_IFACE].as<dboard_iface::sptr>();
    }

private:
    device::sptr _dev;

    size_t rx_cpm(void){ //channels per mboard
        size_t nchan = get_rx_subdev_spec(0).size();
        for (size_t m = 1; m < get_num_mboards(); m++){
            if (nchan != get_rx_subdev_spec(m).size()){
                throw std::runtime_error("rx subdev spec size inconsistent across all mboards");
            }
        }
        return nchan;
    }

    size_t tx_cpm(void){ //channels per mboard
        size_t nchan = get_tx_subdev_spec(0).size();
        for (size_t m = 1; m < get_num_mboards(); m++){
            if (nchan != get_tx_subdev_spec(m).size()){
                throw std::runtime_error("tx subdev spec size inconsistent across all mboards");
            }
        }
        return nchan;
    }

    wax::obj _mboard(size_t mboard){
        std::string mb_name = (*_dev)[DEVICE_PROP_MBOARD_NAMES].as<prop_names_t>().at(mboard);
        return (*_dev)[named_prop_t(DEVICE_PROP_MBOARD, mb_name)];
    }
    wax::obj _rx_dsp(size_t mboard){
        return _mboard(mboard)[MBOARD_PROP_RX_DSP];
    }
    wax::obj _tx_dsp(size_t mboard){
        return _mboard(mboard)[MBOARD_PROP_TX_DSP];
    }
    wax::obj _rx_dboard(size_t chan){
        std::string db_name = get_rx_subdev_spec(chan/rx_cpm()).at(chan%rx_cpm()).db_name;
        return _mboard(chan/rx_cpm())[named_prop_t(MBOARD_PROP_RX_DBOARD, db_name)];
    }
    wax::obj _tx_dboard(size_t chan){
        std::string db_name = get_tx_subdev_spec(chan/tx_cpm()).at(chan%tx_cpm()).db_name;
        return _mboard(chan/tx_cpm())[named_prop_t(MBOARD_PROP_TX_DBOARD, db_name)];
    }
    wax::obj _rx_subdev(size_t chan){
        std::string sd_name = get_rx_subdev_spec(chan/rx_cpm()).at(chan%rx_cpm()).sd_name;
        return _rx_dboard(chan)[named_prop_t(DBOARD_PROP_SUBDEV, sd_name)];
    }
    wax::obj _tx_subdev(size_t chan){
        std::string sd_name = get_tx_subdev_spec(chan/tx_cpm()).at(chan%tx_cpm()).sd_name;
        return _tx_dboard(chan)[named_prop_t(DBOARD_PROP_SUBDEV, sd_name)];
    }
    gain_group::sptr _rx_gain_group(size_t chan){
        std::string sd_name = get_rx_subdev_spec(chan/rx_cpm()).at(chan%rx_cpm()).sd_name;
        return _rx_dboard(chan)[named_prop_t(DBOARD_PROP_GAIN_GROUP, sd_name)].as<gain_group::sptr>();
    }
    gain_group::sptr _tx_gain_group(size_t chan){
        std::string sd_name = get_tx_subdev_spec(chan/tx_cpm()).at(chan%tx_cpm()).sd_name;
        return _tx_dboard(chan)[named_prop_t(DBOARD_PROP_GAIN_GROUP, sd_name)].as<gain_group::sptr>();
    }
};

/***********************************************************************
 * The Make Function
 **********************************************************************/
multi_usrp::sptr multi_usrp::make(const device_addr_t &dev_addr){
    return sptr(new multi_usrp_impl(dev_addr));
}