from pydantic import BaseModel
import sqlite3
from pywebpush import webpush


class PushSubscriptionData(BaseModel):
    endpoint: str
    keys: object


conn = sqlite3.connect("db.db", check_same_thread=False)
cursor = conn.cursor()

f = open("private_key.pem", "r")
PRIVATE_VAPID_KEY = f.read()
f.close()

cursor.execute("""
CREATE TABLE IF NOT EXISTS subscriptions (
    endpoint TEXT PRIMARY KEY,
    keys_p256dh TEXT NOT NULL,
    keys_auth TEXT NOT NULL
);""")


# --- subscribe
def subscribe(data: PushSubscriptionData):
    cursor.execute("SELECT * FROM subscriptions WHERE endpoint = ?", (data.endpoint,))
    row = cursor.fetchall()

    if len(row) > 0:
        return data.endpoint

    cursor.execute("""
    INSERT INTO subscriptions (endpoint, keys_p256dh, keys_auth)
    VALUES (?, ?, ?)""", (data.endpoint, data.keys["p256dh"], data.keys["auth"]))
    conn.commit()
    return data.endpoint


# --- send notification
# ---- not used yet
def send_notification(endpoint: str):
    cursor.execute("SELECT * FROM subscriptions WHERE endpoint = ?", (endpoint,))
    row = cursor.fetchall()[0]
    subscription_info = {
        "endpoint": endpoint,
        "keys": {
            "p256dh": row[2],
            "auth": row[3],
        },
    }

    try:
        webpush(
            subscription_info=subscription_info,
            data="Hello, world!",
            vapid_private_key=PRIVATE_VAPID_KEY,
            vapid_claims={
                "sub": "mailto:dev@altafcreator.com",
            },
        )
    except Exception as exception:
        print(exception)