import time
import datetime
import logging

logging.basicConfig(
    level=logging.DEBUG, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
)


class Job:
    def __init__(self, target, interval, times: int):
        self.target = target
        self.interval = interval
        self.next_run = datetime.datetime.now() + interval
        self.times = times
        self.last_run = None

    @property
    def should_run(self):
        if self.times == 0:
            return False
        return datetime.datetime.now() >= self.next_run

    def run(self):
        logging.info(f"Running job {self}")
        self.last_run = datetime.datetime.now()
        self.target()
        self.times -= 1
        self.next_run = self.last_run + self.interval
        logging.debug(f"Last run {self.last_run}")
        logging.debug(f"Next run {self.next_run}")
        logging.debug(f"Should run {self.should_run}")


class Scheduler:
    jobs: [Job] = []

    def every(self, interval: datetime.timedelta, target, times=-1):
        self.jobs.append(Job(target, interval, times))

    def at(self, time, target):
        interval = time - datetime.datetime.now()
        self.jobs.append(Job(target, interval, 1))

    def run(self):
        for job in self.jobs:
            if job.should_run:
                job.run()
        # else:
        #     logging.info("No jobs to run…")