main.py

import eel
import json

todo_count = 0

eel.init("web")

def read_data():
    with open("data.json", "r") as file:
        content = json.loads(file.read())
    return content

def write_data(content):
    with open("data.json", "w") as file:
        file.write(json.dumps(content))
    return content

@eel.expose
def create_todo(title):
    global todo_count

    new_todo = {
        "id": todo_count + 1,
        "title": title
    }

    content = read_data()
    content['todos'].append(new_todo)

    write_data(content)
    todo_count += 1

    return new_todo

@eel.expose
def list_todo():
    return read_data()

@eel.expose
def delete_todo(id):
    global todo_count

    content = read_data()
    for todo in content['todos']:
        if todo['id'] == id:
            content['todos'].remove(todo)

    write_data(content)
    todo_count -= 1

import os
if not os.path.exists("data.json"):
    file = open("data.json", "w")
    file.write(json.dumps({"todos": []}))
    file.close()
else:
    content = read_data()
    todo_count = len(content['todos'])

eel.start("index.html")