from kivy.lang import Builder
from plyer import gps
from kivy.app import App
from kivy.properties import StringProperty
from kivy.clock import Clock, mainthread

kv = '''
BoxLayout:
    orientation: 'vertical'

    Label:
        text: app.gps_location

    Label:
        text: app.gps_status

    BoxLayout:
        size_hint_y: None
        height: '48dp'
        padding: '4dp'

        ToggleButton:
            text: 'Start' if self.state == 'normal' else 'Stop'
            on_state:
                app.gps.start() if self.state == 'down' else app.gps.stop()
'''


class GpsTest(App):

    gps_location = StringProperty()
    gps_status = StringProperty('Click Start to get GPS location updates')
    gps_conn = False

    def build(self):
        self.gps = gps
        try:
            self.gps.configure(on_location=self.on_location,
                               on_status=self.on_status)
        except NotImplementedError:
            import traceback
            traceback.print_exc()
            self.gps_status = 'GPS is not implemented for your platform'

        return Builder.load_string(kv)

    def on_pause(self):
        '''
        called on appication pause
        '''
        if self.gps_conn:
            self.gps.stop()

        return True

    def on_resume(self):
        '''
        called on appication resume
        '''
        if self.gps_conn :
            self.gps.start()


    def gpsstart(self):
        if not self.gps_conn :
            self.gps.start()
#            self.gps_conn = True

    def gpsstop(self):
        if self.gps_conn :
            self.gps.stop()
            self.gps_conn = False

    @mainthread
    def on_location(self, **kwargs):
        self.gps_location = '\n'.join([
            '{}={}'.format(k, v) for k, v in kwargs.items()])

    @mainthread
    def on_status(self, stype, status):
        self.gps_status = 'type={}\n{}'.format(stype, status)

if __name__ == '__main__':
    GpsTest().run()