from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.button import Button
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput
from kivy.lang import Builder
# import asyncio
# from bleak import BleakClient,BleakScanner

# import json

STM32_UUID = "00001101-0000-1000-8000-00805F9B34FB"

class InfoWidget(Widget): 
    # def __init__(self, **kwargs):
    #     super(InfoWidget, self).__init__(**kwargs)
        

    def discover_devices(self):
        self.size = (800,480)
        grid00 = GridLayout(cols=1,rows=2,width=self.width,height=self.height / 4)
        grid00.top = self.top
        self.add_widget(grid00)
        grid01 = GridLayout(cols=2,rows=1,width=grid00.width,height=grid00.height / 2)
        grid00.add_widget(grid01)
        grid01.add_widget(Label(text="Device Name:",width=grid00.width / 2,height=grid00.height / 2,font_size=50))
        deviceName = "HC-06"
        grid01.add_widget(TextInput(text=deviceName,width=grid00.width / 2,height=grid00.height / 2,font_size=40))
        connect_button = Button(text="Connect",width=grid00.width,height=grid00.height / 2,center_x=grid00.center_x,font_size=40)
        Builder.load_string('''
<Button>:
    id: connect_button
    on_touch_down: root.root.remove_widget(grid00)
                            ''')
        grid00.add_widget(connect_button)

        # for d in devices:
        #     if d.name == deviceName:
        #         await self.connect_and_receive(d.address)
        #         self.add_widget(Label(text="Connected",width=self.width,height=self.height / 4))
        #         break
        # grid1 = GridLayout(cols=2,rows=5,width=self.width,height=self.height)
        # self.add_widget(grid1)
        # for num,d in enumerate(devices):
        #     button = Button(text=f"{d.name}")
        #     button.height = grid1.height / 5
        #     button.width = grid1.width / 2
        #     button.on_touch_down = lambda instance, d=d: asyncio.run(self.connect_and_receive(d.address))
        #     grid1.add_widget(button)
        #     if num >= 9:
        #         break

    # async def connect_and_receive(self, address):
    #     async with BleakClient(address) as client:
    #         if await client.is_connected():
    #             rawdata = await client.read_gatt_char(STM32_UUID)
    #             data = rawdata.decode("utf-8")
    #             if data.startswith("[") and data.endswith("]"):
    #                 list = json.loads(data)
    #                 info = "基波频率：" + str(list[0]) + "Hz\n" + \
    #                             "THD：" + str(list[6]) + "%\n" + \
    #                             "基波幅值：" + str(list[1]) + "V\n" + \
    #                             "二次谐波：" + str(list[2]) + "V\n" + \
    #                             "三次谐波：" + str(list[3]) + "V\n" + \
    #                             "四次谐波：" + str(list[4]) + "V\n" + \
    #                             "五次谐波：" + str(list[5]) + "V\n"
    #             else:
    #                 info = "传输数据出错"
    #             label = Label(text=info)
    #             self.add_widget(label)
    #             return 
    #         else:
    #             print("Failed to connect to device.")
    # def debug(self):
    #     # self.size = (800,480)
    #     grid = GridLayout(cols=2,rows=4,width=self.width,height=self.height)
    #     self.add_widget(grid)
    #     for i in range(8):
    #         button = Button(text=str(i))
    #         button.width = grid.width / 2
    #         button.height = grid.height / 4
    #         grid.add_widget(button)

class STI2021A(App):
    def build(self):
        info = InfoWidget()
        info.discover_devices()
        # info.debug()
        return info


if __name__ == '__main__':
    STI2021A().run()