# Copyright © 2026 Remco van 't Veer
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.

import time

class Events:
    events = []

    def push(self, event):
        self.events.append(event)

    def pop(self, timeout_ms = 500):
        before = time.ticks_ms()
        while True:
            value = self.events.pop() if self.events else None
            if value is not None:
                return value
            elif time.ticks_ms() - before >= timeout_ms:
                return None
            time.sleep_ms(50)

if __name__ == "__main__":
    q = Events()
    q.push(1)
    print("pop one", q.pop())
    print("pop empty", q.pop())