import config
import devices
import geo
import logging
import geo.sun
import mqtt
import random
import report
import state_machine
import time

logger = logging.getLogger(config.APP_NAME)


class day_states(state_machine.state_machine):
    LOG_PREFIX = 'Day states:'

    STATE_NIGHT = 'state_night'
    STATE_MORNING = 'state_morning'
    STATE_DAY = 'state_day'
    STATE_EVENING = 'state_evening'

    CONDITION_NIGHT_END = 'condition_night_end'
    CONDITION_MORNING_END = 'condition_morning_end'
    CONDITION_DAY_END = 'condition_day_end'
    CONDITION_EVENING_END = 'condition_evening_end'

    TRANSITIONS = {
        STATE_NIGHT: (
            (CONDITION_NIGHT_END, 1, STATE_MORNING),
        ),
        STATE_MORNING: (
            (CONDITION_MORNING_END, 1, STATE_DAY),
        ),
        STATE_DAY: (
            (CONDITION_DAY_END, 1, STATE_EVENING),
        ),
        STATE_EVENING: (
            (CONDITION_EVENING_END, 1, STATE_NIGHT),
        ),
    }

    def condition_night_end(self):
        ltime = time.localtime(time.time())
        return ltime.tm_hour >= 5 and ltime.tm_min >= 20 and not self.condition_morning_end()   # 2nd condition to ensure day change

    def condition_morning_end(self):
        ltime = time.mktime(time.localtime(time.time()))
        sunrise = time.mktime(geo.sun.sunrise(config.GEO_POSITION)) + 30 * 60
        return ltime > sunrise

    def condition_day_end(self):
        ltime = time.mktime(time.localtime(time.time()))
        sunset = time.mktime(geo.sun.sunset(config.GEO_POSITION)) - 30 * 60
        return ltime > sunset

    def condition_evening_end(self):
        ltime = time.localtime(time.time())
        return ltime.tm_hour >= 20 and ltime.tm_min >= 30


def get_sorted_sw_offs(num):
    SWITCH_DURATION = 30 * 60
    rv = []
    for i in range(0, num):
        rv.append(random.randint(0, SWITCH_DURATION))
    rv.sort()
    return rv


def switch_x(state: bool, sm: day_states, mydevs: list):
    tm = time.time()
    random.shuffle(mydevs)
    offsets = get_sorted_sw_offs(len(mydevs))
    logger.info("State changed to %s with offsets = %s", repr(sm.this_state()), repr(offsets))
    allowed_states = [sm.STATE_EVENING, sm.STATE_MORNING] if state else [sm.STATE_DAY, sm.STATE_NIGHT]
    while (len(mydevs) > 0 and sm.this_state() in allowed_states):
        sm.work()
        dt = time.time() - tm
        if dt > offsets[0]:
            offsets.pop(0)
            d: devices.tradfri_sw_br_ct = mydevs.pop()
            logger.info("Swiching %s to state %s", d.topic, repr(state))
            d.set_output_0(state)
        time.sleep(0.25)


def switch_on(sm: day_states, devs: list):
    switch_x(True, sm, devs[:])


def switch_off(sm: day_states, devs: list):
    switch_x(False, sm, devs[:])


if __name__ == "__main__":
    #
    # Logging
    #
    if config.DEBUG:
        report.appLoggingConfigure(None, 'stdout', ((config.APP_NAME, logging.DEBUG), ),
                                   target_level=logging.WARNING, fmt=report.SHORT_FMT, host='localhost', port=19996)
    else:
        report.stdoutLoggingConfigure(((config.APP_NAME, config.LOGLEVEL), ), report.SHORT_FMT)

    #
    # MQTT Client
    #
    mc = mqtt.mqtt_client(host=config.MQTT_SERVER, port=config.MQTT_PORT, username=config.MQTT_USER,
                          password=config.MQTT_PASSWORD, name=config.APP_NAME)

    #
    # Smarthome physical Devices
    devs = []
    devs.append(devices.tradfri_sw_br_ct(mc, "zigbee_gfe/gfe/room1/window_light"))
    devs.append(devices.tradfri_sw_br_ct(mc, "zigbee_gfe/gfe/room2/window_light"))
    devs.append(devices.tradfri_sw_br_ct(mc, "zigbee_gfe/gfe/room3/window_light"))

    #
    # Functionality
    #
    sm = day_states(day_states.STATE_DAY, logging.DEBUG)
    sm.register_state_change_callback(sm.STATE_NIGHT, None, switch_off, sm, devs)
    sm.register_state_change_callback(sm.STATE_MORNING, None, switch_on, sm, devs)
    sm.register_state_change_callback(sm.STATE_DAY, None, switch_off, sm, devs)
    sm.register_state_change_callback(sm.STATE_EVENING, None, switch_on, sm, devs)
    while True:
        sm.work()
        time.sleep(0.25)