import time

from unittest.test import equivalency_chk

from .help import DELAY_SET_GET, DELAY_FLASH, set_precondition

FLASH_TRIGGER_LONGPUSH = 'longpush'
FLASH_TRIGGER_ACTIVATE = 'activate'


def device_follow(tLogger, master, master_key, slave, slave_key, values, switch_on):
    prepare_list = []
    # Prepare System
    if switch_on is not None:
        prepare_list.append((switch_on, switch_on.KEY_OUTPUT_0, True, True))
    start_state = values[-1]
    prepare_list.append((master, master_key, start_state, False))
    prepare_list.append((slave, slave_key, start_state, False))
    set_precondition(tLogger, prepare_list)
    #
    master_exp = master.get(master_key)
    slave_exp = slave.get(slave_key)
    equivalency_chk((master_exp, slave_exp), (start_state, start_state), tLogger, "Start state (master, slave)")
    #
    # Test devices
    for value in values:
        master.set(master_key, value)
        time.sleep(DELAY_SET_GET)
        tLogger.debug("Setting state of %s to %s", master.get_name(master_key, master.topic), repr(value))
        result = slave.get(slave_key)
        equivalency_chk(result, value, tLogger, f"Value for {slave.get_name(slave_key, slave.topic)}")


def device_flash(tLogger, device, device_flash_key, trigger_device, trigger_device_key, start_state):
    #
    # Precondition
    #
    time.sleep(DELAY_SET_GET + DELAY_FLASH)     # Wait for possibly flashing dvice to finish
    set_precondition(tLogger, ((trigger_device, trigger_device_key, False, False), (device, device_flash_key, start_state, False), ))

    #
    # Trigger
    #
    trigger_device.set(trigger_device_key, True)

    #
    # Test
    #
    time.sleep(DELAY_SET_GET)
    #
    tLogger.debug("Waiting for first state change after %.1fs.", DELAY_SET_GET)
    equivalency_chk(not start_state, device.get(device_flash_key), tLogger, f"Value for {device.get_name(device_flash_key, device.topic)}")
    #
    time.sleep(DELAY_FLASH)
    tLogger.debug("Waiting for second state change after %.1fs.", DELAY_FLASH)
    equivalency_chk(start_state, device.get(device_flash_key), tLogger, f"Value for {device.get_name(device_flash_key, device.topic)}")

    # Reset Trigger
    trigger_device.set(trigger_device_key, False)
    time.sleep(DELAY_SET_GET)
    tLogger.debug("Collect finalise logs.")