import numpy as np

from module.base.timer import Timer
from module.base.utils import red_overlay_transparency, get_color
from module.combat.combat import Combat
from module.handler.assets import *
from module.logger import logger


def ambush_letter_preprocess(image):
    """
    Args:
        image (np.ndarray):

    Returns:
        np.ndarray
    """
    return (image - 64) / 0.75


TEMPLATE_AMBUSH_EVADE_SUCCESS.set_preprocess_func(ambush_letter_preprocess)
TEMPLATE_AMBUSH_EVADE_FAILED.set_preprocess_func(ambush_letter_preprocess)


class AmbushHandler(Combat):
    MAP_AMBUSH_OVERLAY_TRANSPARENCY_THRESHOLD = 0.40
    MAP_AIR_RAID_OVERLAY_TRANSPARENCY_THRESHOLD = 0.35  # Usually (0.50, 0.53)
    MAP_AIR_RAID_CONFIRM_SECOND = 0.5

    def ambush_color_initial(self):
        MAP_AMBUSH.load_color(self.device.image)
        MAP_AIR_RAID.load_color(self.device.image)

    def _ambush_appear(self):
        return red_overlay_transparency(MAP_AMBUSH.color, get_color(self.device.image, MAP_AMBUSH.area)) > \
               self.MAP_AMBUSH_OVERLAY_TRANSPARENCY_THRESHOLD

    def _air_raid_appear(self):
        return red_overlay_transparency(MAP_AIR_RAID.color, get_color(self.device.image, MAP_AIR_RAID.area)) > \
               self.MAP_AIR_RAID_OVERLAY_TRANSPARENCY_THRESHOLD

    def _handle_air_raid(self):
        logger.info('Map air raid')
        disappear = Timer(self.MAP_AIR_RAID_CONFIRM_SECOND)
        disappear.start()
        while 1:
            self.device.screenshot()
            if self._air_raid_appear():
                disappear.reset()
            else:
                if disappear.reached():
                    break

    def _handle_ambush(self):
        logger.info('Map ambushed')
        self.wait_until_appear_then_click(MAP_AMBUSH_EVADE)
        # self.sleep(0.8)
        # while 1:
        #     self.screenshot()
        #     if self.handle_info_bar():
        #         if self.combat_appear():
        #             logger.info('Ambush evade failed')
        #             self.combat()
        #         break
        self.wait_until_appear(INFO_BAR_1)
        if TEMPLATE_AMBUSH_EVADE_SUCCESS.match(self.device.image):
            logger.info('Ambush evade success')
        elif TEMPLATE_AMBUSH_EVADE_FAILED.match(self.device.image):
            logger.info('Ambush evade failed')
            self.combat(expected_end='no_searching')
        else:
            logger.warning('Unrecognised info when ambush evade.')
            self.ensure_no_info_bar()
            if self.combat_appear():
                self.combat()

    def handle_ambush(self):
        if not self.config.MAP_HAS_AMBUSH:
            return False

        if self._air_raid_appear():
            self._handle_air_raid()
            return True

        if self._ambush_appear():
            self._handle_ambush()
            return True

        return False