.local/share/task/hooks/on-add/on-modify

on-add.py

#!/usr/bin/python3

from datetime import datetime, time, timezone
from json import dumps, loads
from os.path import expanduser
from sys import stdin, stdout
from zoneinfo import ZoneInfo


def parse_due(dues: str) -> datetime:
    due = datetime.strptime(dues, "%Y%m%dT%H%M%SZ")
    return due.replace(tzinfo=timezone.utc).astimezone(ZoneInfo("localtime"))


def fix_due(due: datetime) -> str:
    due = datetime.combine(due.date(), time.min)
    return due.astimezone(timezone.utc).strftime("%Y%m%dT%H%M%SZ")


def remind_remove(uuid: str) -> None:
    with open(expanduser("~/.remind/todo.rem"), encoding="utf-8") as rem:
        reminders = rem.readlines()
    for num, line in enumerate(reminders):
        if uuid in line:
            del reminders[num]
            del reminders[num]
            break
    with open(expanduser("~/.remind/todo.rem"), "w", encoding="utf-8") as rem:
        rem.writelines(reminders)


def remind_add(task: dict[str, str], due: datetime) -> None:
    if task["status"] != "pending":
        return
    uuid = task["uuid"]
    date = due.strftime("%b %d %Y")
    until = due.strftime("'%Y-%m-%d'")
    description = task["description"]
    line = f"# task: {uuid}\nREM {date} *1 UNTIL [ max({until}, realtoday()) ] MSG {description} (TODO)\n"
    with open(expanduser("~/.remind/todo.rem"), "a", encoding="utf-8") as rem:
        rem.write(line)


def main() -> None:
    tasks = stdin.readline()

    new = stdin.readline()
    if new:
        task = loads(tasks)
        if "due" in task:
            remind_remove(task["uuid"])
        tasks = new

    task = loads(tasks)
    if "due" in task:
        due = parse_due(task["due"])
        task["due"] = fix_due(due)
        remind_add(task, due)
    stdout.write(dumps(task, ensure_ascii=False))


if __name__ == "__main__":
    main()