#!/usr/bin/env python3
# -*- coding: utf-8 -*-

#
# SPDX-License-Identifier: GPL-3.0
#
# GNU Radio Python Flow Graph
# Title: Waterfall
# GNU Radio version: 3.10.7.0

from packaging.version import Version as StrictVersion
from PyQt5 import Qt
from gnuradio import qtgui
from gnuradio import blocks
import pmt
from gnuradio import gr
from gnuradio.filter import firdes
from gnuradio.fft import window
import sys
import signal
from PyQt5 import Qt
from argparse import ArgumentParser
from gnuradio.eng_arg import eng_float, intx
from gnuradio import eng_notation
import sip



class waterfall(gr.top_block, Qt.QWidget):

    def __init__(self, filepath='', sample_rate='1e6'):
        gr.top_block.__init__(self, "Waterfall", catch_exceptions=True)
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Waterfall")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except BaseException as exc:
            print(f"Qt GUI: Could not set Icon: {str(exc)}", file=sys.stderr)
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "waterfall")

        try:
            if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
                self.restoreGeometry(self.settings.value("geometry").toByteArray())
            else:
                self.restoreGeometry(self.settings.value("geometry"))
        except BaseException as exc:
            print(f"Qt GUI: Could not restore geometry: {str(exc)}", file=sys.stderr)

        ##################################################
        # Parameters
        ##################################################
        self.filepath = filepath
        self.sample_rate = sample_rate

        ##################################################
        # Blocks
        ##################################################

        self.qtgui_waterfall_sink_x_0 = qtgui.waterfall_sink_c(
            1024, #size
            window.WIN_BLACKMAN_hARRIS, #wintype
            0, #fc
            float(sample_rate), #bw
            "", #name
            1, #number of inputs
            None # parent
        )
        self.qtgui_waterfall_sink_x_0.set_update_time(0.10)
        self.qtgui_waterfall_sink_x_0.enable_grid(False)
        self.qtgui_waterfall_sink_x_0.enable_axis_labels(True)



        labels = ['', '', '', '', '',
                  '', '', '', '', '']
        colors = [0, 0, 0, 0, 0,
                  0, 0, 0, 0, 0]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
                  1.0, 1.0, 1.0, 1.0, 1.0]

        for i in range(1):
            if len(labels[i]) == 0:
                self.qtgui_waterfall_sink_x_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_waterfall_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_waterfall_sink_x_0.set_color_map(i, colors[i])
            self.qtgui_waterfall_sink_x_0.set_line_alpha(i, alphas[i])

        self.qtgui_waterfall_sink_x_0.set_intensity_range(-140, 10)

        self._qtgui_waterfall_sink_x_0_win = sip.wrapinstance(self.qtgui_waterfall_sink_x_0.qwidget(), Qt.QWidget)

        self.top_grid_layout.addWidget(self._qtgui_waterfall_sink_x_0_win, 3, 0, 6, 4)
        for r in range(3, 9):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 4):
            self.top_grid_layout.setColumnStretch(c, 1)
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, float(sample_rate),True)
        self.blocks_file_source_0 = blocks.file_source(gr.sizeof_gr_complex*1, filepath, True, 0, 0)
        self.blocks_file_source_0.set_begin_tag(pmt.PMT_NIL)


        ##################################################
        # Connections
        ##################################################
        self.connect((self.blocks_file_source_0, 0), (self.blocks_throttle_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.qtgui_waterfall_sink_x_0, 0))


    def closeEvent(self, event):
        self.settings = Qt.QSettings("GNU Radio", "waterfall")
        self.settings.setValue("geometry", self.saveGeometry())
        self.stop()
        self.wait()

        event.accept()

    def get_filepath(self):
        return self.filepath

    def set_filepath(self, filepath):
        self.filepath = filepath
        self.blocks_file_source_0.open(self.filepath, True)

    def get_sample_rate(self):
        return self.sample_rate

    def set_sample_rate(self, sample_rate):
        self.sample_rate = sample_rate
        self.blocks_throttle_0.set_sample_rate(float(self.sample_rate))
        self.qtgui_waterfall_sink_x_0.set_frequency_range(0, float(self.sample_rate))



def argument_parser():
    parser = ArgumentParser()
    parser.add_argument(
        "--filepath", dest="filepath", type=str, default='',
        help="Set filepath [default=%(default)r]")
    parser.add_argument(
        "--sample-rate", dest="sample_rate", type=str, default='1e6',
        help="Set 1e6 [default=%(default)r]")
    return parser


def main(top_block_cls=waterfall, options=None):
    if options is None:
        options = argument_parser().parse_args()

    if StrictVersion("4.5.0") <= StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
        style = gr.prefs().get_string('qtgui', 'style', 'raster')
        Qt.QApplication.setGraphicsSystem(style)
    qapp = Qt.QApplication(sys.argv)

    tb = top_block_cls(filepath=options.filepath, sample_rate=options.sample_rate)

    tb.start()

    tb.show()

    def sig_handler(sig=None, frame=None):
        tb.stop()
        tb.wait()

        Qt.QApplication.quit()

    signal.signal(signal.SIGINT, sig_handler)
    signal.signal(signal.SIGTERM, sig_handler)

    timer = Qt.QTimer()
    timer.start(500)
    timer.timeout.connect(lambda: None)

    qapp.exec_()

if __name__ == '__main__':
    main()
