import sqlite3
from flask import Flask

# =====================================================
# Database Helpers
# =====================================================

def get_db(app: Flask):
    """
    Returnerar en SQLite-connection baserat på appens DB_PATH
    """
    conn = sqlite3.connect(app.config["DB_PATH"])
    conn.row_factory = sqlite3.Row
    return conn


def init_db(app: Flask):
    """
    Skapar databasen och todo-tabellen om den inte redan finns
    """
    with get_db(app) as conn:
        conn.execute(
            """
            CREATE TABLE IF NOT EXISTS todo (
              id INTEGER PRIMARY KEY AUTOINCREMENT,
              title TEXT NOT NULL,
              description TEXT NOT NULL,
              status TEXT NOT NULL DEFAULT 'not-started'
                CHECK (status IN ('not-started','in-progress','done')),
              created TEXT NOT NULL,
              edited TEXT
            );
            """
        )