import allure
import logging
import cv2
import numpy as np
import squish
from PIL import ImageGrab

import configs
import driver
import shortuuid
from datetime import datetime
from configs.system import IS_LIN
from driver import context
from driver.server import SquishServer
from gui.objects_map.names import statusDesktop_mainWindow
from scripts.utils import system_path, local_system
from scripts.utils.system_path import SystemPath
from scripts.utils.wait_for_port import wait_for_port

LOG = logging.getLogger(__name__)


class AUT:
    def __init__(
            self,
            app_path: system_path.SystemPath = configs.AUT_PATH,
            user_data: SystemPath = None
    ):
        super(AUT, self).__init__()
        self.path = app_path
        self.ctx = None
        self.pid = None
        self.port = None
        self.aut_id = f'AUT_{datetime.now():%H%M%S}'
        self.app_data = configs.testpath.STATUS_DATA / f'app_{shortuuid.ShortUUID().random(length=10)}'
        if user_data is not None:
            user_data.copy_to(self.app_data / 'data')
        self.options = ''
        driver.testSettings.setWrappersForApplication(self.aut_id, ['Qt'])

    def __str__(self):
        return type(self).__qualname__

    def __enter__(self):
        return self.launch()

    def __exit__(self, exc_type, exc_value, traceback):
        if exc_type:
            try:
                self.attach()
                driver.waitForObjectExists(statusDesktop_mainWindow).setVisible(True)
                configs.testpath.TEST.mkdir(parents=True, exist_ok=True)
                screenshot = configs.testpath.TEST / f'{self.aut_id}.png'

                rect = driver.object.globalBounds(driver.waitForObject(statusDesktop_mainWindow))
                img = ImageGrab.grab(
                    bbox=(rect.x, rect.y, rect.x + rect.width, rect.y + rect.height),
                    xdisplay=configs.system.DISPLAY if IS_LIN else None)
                view = cv2.cvtColor(np.array(img), cv2.COLOR_BGR2RGB)
                cv2.imwrite(str(screenshot), view)

                allure.attach(
                    name=f'Screenshot on fail: {self.aut_id}',
                    body=screenshot.read_bytes(),
                    attachment_type=allure.attachment_type.PNG)
            except Exception as err:
                LOG.error(err)

        self.stop()

    def detach_context(self):
        if self.ctx is None:
            return
        squish.currentApplicationContext().detach()
        self.ctx = None

    def kill_process(self):
        if self.pid is None:
            LOG.warning('No PID available for AUT.')
            return
        local_system.kill_process_with_retries(self.pid)
        self.pid = None

    @allure.step('Attach Squish to Test Application')
    def attach(self):
        LOG.info('Attaching to AUT: localhost:%d', self.port)
        for i in range(3):
            try:
                SquishServer().add_attachable_aut(self.aut_id, self.port)
                if self.ctx is None:
                    self.ctx = context.get_context(self.aut_id)
                else:
                    if self.ctx is None:
                        for j in range(3):
                            try:
                                context.get_context(self.aut_id)
                            except AttributeError:
                                continue

                squish.setApplicationContext(self.ctx)
                assert squish.waitFor(lambda: self.ctx.isRunning, configs.timeouts.PROCESS_TIMEOUT_SEC)
            except Exception as err:
                LOG.error('Failed to attach AUT: %s', err)
                self.stop()
                raise err
        LOG.info('Successfully attached AUT!')
        return self

    @allure.step('Start AUT')
    def startaut(self):
        LOG.info('Launching AUT: %s', self.path)
        self.port = local_system.find_free_port(configs.squish.AUT_PORT, 100)
        command = [
            str(configs.testpath.SQUISH_DIR / 'bin/startaut'),
            '--verbose',
            f'--port={self.port}',
            str(self.path),
            f'--datadir={self.app_data}',
            f'--LOG_LEVEL={configs.testpath.LOG_LEVEL}',
        ]
        try:
            with open(configs.AUT_LOG_FILE, "ab") as log:
                self.pid = local_system.execute(command, stderr=log, stdout=log)
        except Exception as err:
            LOG.error('Failed to start AUT: %s', err)
            self.stop()
            raise err
        LOG.info('Launched AUT under PID: %d', self.pid)
        return self

    @allure.step('Close application')
    def stop(self):
        LOG.info('Stopping AUT: %s', self.path)
        self.detach_context()
        self.kill_process()

    @allure.step("Start and attach AUT")
    def launch(self) -> 'AUT':
        self.startaut()
        self.wait()
        self.attach()
        return self

    @allure.step('Waiting for port')
    def wait(self, timeout: int = 3, retries: int = 10):
        LOG.info('Waiting for AUT port localhost:%d...', self.port)
        try:
            wait_for_port('localhost', self.port, timeout, retries)
        except TimeoutError as err:
            LOG.error('Wait for AUT port timed out: %s', err)
            self.stop()
            raise err
        LOG.info('AUT port available!')

    @allure.step('Restart application')
    def restart(self):
        self.stop()
        self.launch()