import time
from enum import Enum
from subprocess import CREATE_NO_WINDOW

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium.webdriver.remote.webelement import WebElement

from common import (Asset, User, Account, Platform, Step)
from common import (BaseApplication)
from common import (notify_err_message, block_input, unblock_input)


class Command(Enum):
    TYPE = 'type'
    CLICK = 'click'
    OPEN = 'open'


def _execute_type(ele: WebElement, value: str):
    ele.send_keys(value)


def _execute_click(ele: WebElement, value: str):
    ele.click()


commands_func_maps = {
    Command.CLICK: _execute_click,
    Command.TYPE: _execute_type,
    Command.OPEN: _execute_type,
}


class StepAction:
    methods_map = {
        "NAME": By.NAME,
        "ID": By.ID,
        "CLASS_NAME": By.CLASS_NAME,
        "CSS_SELECTOR": By.CSS_SELECTOR,
        "CSS": By.CSS_SELECTOR,
        "XPATH": By.XPATH
    }

    def __init__(self, target='', value='', command=Command.TYPE, **kwargs):
        self.target = target
        self.value = value
        self.command = command

    def execute(self, driver: webdriver.Chrome) -> bool:
        if not self.target:
            return True
        target_name, target_value = self.target.split("=", 1)
        by_name = self.methods_map.get(target_name.upper(), By.NAME)
        ele = driver.find_element(by=by_name, value=target_value)
        if not ele:
            return False
        if self.command == 'type':
            ele.send_keys(self.value)
        elif self.command in ['click', 'button']:
            ele.click()
        elif self.command in ['open']:
            driver.get(self.value)
        return True

    def _execute_command_type(self, ele, value):
        ele.send_keys(value)


def execute_action(driver: webdriver.Chrome, step: StepAction) -> bool:
    try:
        return step.execute(driver)
    except Exception as e:
        print(e)
        notify_err_message(str(e))
        return False


class WebAPP(object):

    def __init__(self, app_name: str = '', user: User = None, asset: Asset = None,
                 account: Account = None, platform: Platform = None, **kwargs):
        self.app_name = app_name
        self.user = user
        self.asset = asset
        self.account = account
        self.platform = platform

        self.extra_data = self.asset.spec_info
        self._steps = list()
        autofill_type = self.asset.spec_info.autofill
        if autofill_type == "basic":
            self._steps = self._default_custom_steps()
        elif autofill_type == "script":
            script_list = self.asset.spec_info.script
            steps = sorted(script_list, key=lambda step_item: step_item.step)
            for item in steps:
                val = item.value
                if val:
                    val = val.replace("{USERNAME}", self.account.username)
                    val = val.replace("{SECRET}", self.account.secret)
                item.value = val
                self._steps.append(item)

    def _default_custom_steps(self) -> list:
        account = self.account
        spec_info = self.asset.spec_info
        default_steps = [
            Step({
                "step": 1,
                "value": account.username,
                "target": spec_info.username_selector,
                "command": "type"
            }),
            Step({
                "step": 2,
                "value": account.secret,
                "target": spec_info.password_selector,
                "command": "type"
            }),
            Step({
                "step": 3,
                "value": "",
                "target": spec_info.submit_selector,
                "command": "click"
            })
        ]
        return default_steps

    def execute(self, driver: webdriver.Chrome) -> bool:
        if not self.asset.address:
            return True

        for step in self._steps:
            action = StepAction(target=step.target, value=step.value,
                                command=step.command)
            ret = execute_action(driver, action)
            if not ret:
                unblock_input()
                notify_err_message(f"执行失败: target: {action.target} command: {action.command}")
                block_input()
                return False
        return True


def default_chrome_driver_options():
    options = webdriver.ChromeOptions()
    options.add_argument("start-maximized")
    # 禁用 扩展
    options.add_argument("--disable-extensions")
    # 禁用开发者工具
    options.add_argument("--disable-dev-tools")
    # 禁用 密码管理器弹窗
    prefs = {"credentials_enable_service": False,
             "profile.password_manager_enabled": False}
    options.add_experimental_option("prefs", prefs)
    options.add_experimental_option("excludeSwitches", ['enable-automation'])
    return options


class AppletApplication(BaseApplication):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.driver = None
        self.app = WebAPP(app_name=self.app_name, user=self.user,
                          account=self.account, asset=self.asset, platform=self.platform)
        self._chrome_options = default_chrome_driver_options()

    def run(self):
        service = Service()
        #  driver 的 console 终端框不显示
        service.creationflags = CREATE_NO_WINDOW
        self.driver = webdriver.Chrome(options=self._chrome_options, service=service)
        self.driver.implicitly_wait(10)
        if self.app.asset.address != "":
            self.driver.get(self.app.asset.address)
            ok = self.app.execute(self.driver)
            if not ok:
                print("执行失败")
        self.driver.maximize_window()

    def wait(self):
        disconnected_msg = "Unable to evaluate script: disconnected: not connected to DevTools\n"
        closed_msg = "Unable to evaluate script: no such window: target window already closed"

        while True:
            time.sleep(5)
            logs = self.driver.get_log('driver')
            if len(logs) == 0:
                continue
            ret = logs[-1]
            if isinstance(ret, dict):
                message = ret.get('message', '')
                if disconnected_msg in message or closed_msg in message:
                    break
                print("ret: ", ret)
        self.close()

    def close(self):
        if self.driver:
            try:
                # quit 退出全部打开的窗口
                self.driver.quit()
            except Exception as e:
                print(e)