main.py

from kivymd.app import MDApp
from kivymd.uix.dialog import MDDialog
from kivymd.uix.boxlayout import MDBoxLayout
from kivymd.uix.pickers import MDDatePicker
from datetime import datetime
from kivymd.uix.list import TwoLineAvatarIconListItem, ILeftBodyTouch
from kivymd.uix.selectioncontrol import MDCheckbox
from kivy.utils import platform

if platform == "android":
    from android.permissions import request_permissions, Permission
    request_permissions([Permission.READ_EXTERNAL_STORAGE, Permission.WRITE_EXTERNAL_STORAGE])


from database import Database

# Initialize db instance
db = Database()


class DialogContent(MDBoxLayout):
    """OPENS A DIALOG BOX THAT GETS THE TASK FROM THE USER"""
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.ids.date_text.text = str(datetime.now().strftime('%A %d %B %Y'))

    
    def show_date_picker(self):
        """Opens the date picker"""
        date_dialog = MDDatePicker()
        date_dialog.bind(on_save=self.on_save)
        date_dialog.open()

    def on_save(self, instance, value, date_range):
        """This functions gets the date from the date picker and converts its it a
        more friendly form then changes the date label on the dialog to that"""

        date = value.strftime('%A %d %B %Y')
        self.ids.date_text.text = str(date)


class ListItemWithCheckbox(TwoLineAvatarIconListItem):
    '''Custom list item'''

    def __init__(self, pk=None, **kwargs):
        super().__init__(**kwargs)
        # state a pk which we shall use link the list items with the database primary keys
        self.pk = pk


    def mark(self, check, the_list_item):
        '''mark the task as complete or incomplete'''
        if check.active == True:
            the_list_item.text = '[s]'+the_list_item.text+'[/s]'
            db.mark_task_as_complete(the_list_item.pk)# here
        else:
            the_list_item.text = str(db.mark_task_as_incomplete(the_list_item.pk))# Here

    def delete_item(self, the_list_item):
        '''Delete the task'''
        self.parent.remove_widget(the_list_item)
        db.delete_task(the_list_item.pk)# Here



class LeftCheckbox(ILeftBodyTouch, MDCheckbox):
    '''Custom left container'''



class MainApp(MDApp):
    task_list_dialog = None
    def build(self):
        # Setting theme to my favorite theme
        self.theme_cls.primary_palette = "DeepPurple"

    def show_task_dialog(self):
        if not self.task_list_dialog:
            self.task_list_dialog = MDDialog(
                title="Create Task",
                type="custom",
                content_cls=DialogContent(),
            )

        self.task_list_dialog.open()

    def on_start(self):
        """Load the saved tasks and add them to the MDList widget when the application starts"""
        try:
            completed_tasks, uncomplete_tasks = db.get_tasks()

            if uncomplete_tasks != []:
                for task in uncomplete_tasks:
                    add_task = ListItemWithCheckbox(pk=task[0],text=task[1], secondary_text=task[2])
                    self.root.ids.container.add_widget(add_task)

            if completed_tasks != []:
                for task in completed_tasks:
                    add_task = ListItemWithCheckbox(pk=task[0],text='[s]'+task[1]+'[/s]', secondary_text=task[2])
                    add_task.ids.check.active = True
                    self.root.ids.container.add_widget(add_task)
        except Exception as e:
            print(e)
            pass

    def close_dialog(self, *args):
        self.task_list_dialog.dismiss()

    def add_task(self, task, task_date):
        '''Add task to the list of tasks'''

        # Add task to the db
        created_task = db.create_task(task.text, task_date)# Here

        # return the created task details and create a list item
        self.root.ids['container'].add_widget(ListItemWithCheckbox(pk=created_task[0], text='[b]'+created_task[1]+'[/b]', secondary_text=created_task[2]))# Here
        task.text = ''

if __name__ == '__main__':
    app = MainApp()
    app.run()