from os import environ

import requests


def get_since_id() -> str:
    with open("since_id", mode="r", encoding="utf8") as since_file:
        since_id = since_file.read()
        return since_id


def set_since_id(since_id: str) -> None:
    with open("since_id", mode="w", encoding="utf8") as since_file:
        since_file.write(since_id)


def fetch_notifications():
    since_id = get_since_id()
    since_param = ""

    if since_id != "":
        since_param = f"&since_id={since_id}"

    token: str = environ.get("NOTIFICATIONS_PUSHOVER_GTS_TOKEN", "")
    notifications_url: str = environ.get("NOTIFICATIONS_PUSHOVER_GTS_URL", "")
    headers = {"Authorization": f"Bearer {token}"}

    response: requests.Response = requests.get(
        f"{notifications_url}?types[]=mention{since_param}",
        headers=headers,
        timeout=10,
    )
    return response.json()


def push_notification(notification: dict) -> None:
    token: str = environ.get("NOTIFICATIONS_PUSHOVER_PO_TOKEN", "")
    user: str = environ.get("NOTIFICATIONS_PUSHOVER_PO_USER", "")
    url: str = environ.get(
        "NOTIFICATIONS_PUSHOVER_PO_URL", "shortcuts://run-shortcut?name=Open in Mona"
    )
    url_title: str = environ.get("NOTIFICATIONS_PUSHOVER_PO_URL_TITLE", "Open in Mona")

    requests.post(
        "https://api.pushover.net/1/messages.json",
        params={
            "token": token,
            "user": user,
            "title": "New Mention",
            "message": f"<p>From {notification['account']['display_name']} (@{notification['account']['acct']}):</p>{notification['status']['content']}",
            "html": 1,
            "url": f"{url}&text={notification['status']['url']}",
            "url_title": url_title,
        },
        timeout=10,
    )


def main() -> None:
    notifications = fetch_notifications()

    if len(notifications) == 0:
        print("No new notifications")
        return

    print(f"Found {len(notifications)} new notifications")

    while notifications:
        notification = notifications.pop()
        print(
            f"From {notification['account']['display_name']} (@{notification['account']['acct']}): {notification['status']['content']}\n"
        )
        push_notification(notification)

    set_since_id(notification["id"])


if __name__ == "__main__":
    main()