# MIT License
#
# Copyright (c) 2021 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
#
# 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.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import threading, time
import importlib

from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal


if importlib.util.find_spec('pyodideProxy'):
    import pyodideProxy
    class TTkTimer():
        _timers = {}
        _uid = 0

        __slots__ = (
            '_id', '_running', '_timer',
            'timeout', '_timerEvent',
            '_delay', '_delayLock', '_quit',
            '_stopTime')

        def __init__(self):
            # Define Signals
            self.timeout = pyTTkSignal()
            self._running = True
            self._timer = None

            self._id = TTkTimer._uid
            TTkTimer._uid +=1
            TTkTimer._timers[self._id] = self

        @staticmethod
        def triggerTimerId(tid):
            if tid in TTkTimer._timers:
                TTkTimer._timers[tid].timeout.emit()

        @staticmethod
        def quitAll():
            pass

        @staticmethod
        def pyodideQuit():
            for timer in TTkTimer._timers:
                TTkTimer._timers[timer].timeout.clearAll()
                TTkTimer._timers[timer]._running = False
                TTkTimer._timers[timer].quit()
            TTkTimer._timers = {}

        def quit(self):
            pass

        @pyTTkSlot(float)
        def start(self, sec=0.0):
            self.stop()
            if self._running:
                self._timer = pyodideProxy.setTimeout(int(sec*1000), self._id)
                # pyodideProxy.consoleLog(f"Timer {self._timer}")

        @pyTTkSlot()
        def stop(self):
            # pyodideProxy.consoleLog(f"Timer {self._timer}")
            if self._timer:
                pyodideProxy.stopTimeout(self._timer)
                self._timer = None
else:
    class TTkTimer(threading.Thread):
        _timers = []
        __slots__ = (
            'timeout', '_delay',
            '_timer', '_quit', '_start')
        def __init__(self):
            self.timeout = pyTTkSignal()
            self._delay = 0
            self._quit  = threading.Event()
            self._start = threading.Event()
            self._timer = threading.Event()
            super().__init__()
            TTkTimer._timers.append(self)

        @staticmethod
        def quitAll():
            for timer in TTkTimer._timers:
                timer.quit()

        def quit(self):
            self._quit.set()
            self._timer.set()
            self._start.set()

        def run(self):
            while not self._quit.is_set():
                self._start.wait()
                self._start.clear()
                if not self._timer.wait(self._delay):
                    self.timeout.emit()

        @pyTTkSlot(float)
        def start(self, sec=0.0):
            self._delay = sec
            self._timer.set()
            self._timer.clear()
            self._start.set()
            if not self.native_id:
                super().start()

        @pyTTkSlot()
        def stop(self):
            self._timer.set()