import sqlite3
import os

DB_PATH = "messenger.db"

def get_connection():
    return sqlite3.connect(DB_PATH)

def init_db():
    if not os.path.exists(DB_PATH):
        conn = get_connection()
        cursor = conn.cursor()
        cursor.execute('''
            CREATE TABLE IF NOT EXISTS chats (
                id INTEGER PRIMARY KEY AUTOINCREMENT,
                title TEXT NOT NULL
            )
        ''')
        cursor.execute('INSERT INTO chats (title) VALUES (?)', ("Чат с Alice",))
        conn.commit()
        conn.close()