from kivy.app import App
from kivy.lang import Builder
from kivy.uix.recycleview import RecycleView
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.gridlayout import GridLayout
from kivy.config import Config
import webbrowser


Config.set("graphics", 'resizable', 0)
Config.set("graphics", 'height', 1280)
Config.set("graphics", 'width', 720)
Builder.load_string("""
#:import webbrowser webbrowser
<Button1@Button>:
    background_color:255, 255, 255, 1
    size:300,150
    size_hint:None, None

<Button2@Button>:
    background_color:255, 255, 255, 1
    size:540,320
    size_hint:None, None

<Image>:
    source:'фон.jpg'
    allow_stretch: True

<Label>:
    color:0,0,0,1
    font_size:30


<BoxLayout>:
    orientation:'vertical'
    spacing:320
    padding:90,160
    background_color:1,1,1,1

<GridLayout10@GridLayout>:
    cols:2
    spacing:40,40
    padding:35

<MainScreen>:
    name:"Menu"
    Image
    BoxLayout:
        Button2:
            font_size:60
            on_press:root.manager.current="Subjects"
            text:"Subjects"
        Button2:
            font_size:60
            text:"Special subjects"
            on_press:root.manager.current="Special"


<SubjectsScreen>:
    name:"Subjects"
    Image
    BoxLayout:
        Button2:
            font_size:60
            text:"10 class"
            on_press:root.manager.current="SubjectsScreen10"
        Button2:
            font_size:60
            text:"11 class"
            on_press:root.manager.current="SubjectsScreen11"

<SubjectsScreen10>:
    name:"SubjectsScreen10"
    Image
    GridLayout10:
        Button1:
            text:"Geometry"
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud/ge', new=2)
        Button1:
            text:"Algebra"
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud/al', new=2)
        Button1:
            text:"Chemistry"
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud/ch', new=2)
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud', new=2)
        Button1:
            text:"Physics"
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud/ph', new=2)
        Button1:
            text:"Russian literature"
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud/rl', new=2)
        Button1:
            text:"Russian language "
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloudrlang', new=2)

        Button1:
            text:"Geography"
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud/geogr', new=2)
        Button1:
            text:"Biology"
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud/bio', new=2)
        Button1:
            text:"Belarusian language"
            on_press: webbrowser.open('https://s3.nl-ams.scw.cloud/bl', new=2)

<SubjectsScreen11>:
    name:"SubjectsScreen11"
    Image
    GridLayout10:
        Button1:
            text:"Алгебра"
        Button1:
            text:"Геометрия"
        Button1:
            text:"Физика"
        Button1:
            text:"Химия"
        Button1:
            text:"Русская литература"
        Button1:
            text:"Русский язык"
            on_press:self.russ_yaz


        Button1:
            text:"География"
        Button1:
            text:"Биология"
        Button1:
            text:"Белорусский язык"
        Button1:
            text:"Астрономия"

<SpecialSubjectsScreen>:
    name:"Special"
    Image
    AnchorLayout:
        Button1:
            text:"No material(Back)"
            on_press: root.manager.current='Menu'
""")


class MainScreen(Screen):
    pass


class SpecialSubjectsScreen(Screen):
    pass


class SubjectsScreen(Screen):
    pass


class SubjectsScreen10(Screen):
    def russ_yaz(self):
        global a
        a = 'Дудников, А.В Русский язык.pdf'


class SubjectsScreen11(Screen):
    pass


sm = ScreenManager()
sm.add_widget(MainScreen(name='Menu'))
sm.add_widget(SpecialSubjectsScreen(name='Special'))
sm.add_widget(SubjectsScreen(name="Subjects"))
sm.add_widget(SubjectsScreen10(name="SubjectsScreen10"))
sm.add_widget(SubjectsScreen11(name="SubjectsScreen11"))


class LibraryApp(App):
    def build(self):
        return sm


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