# -*- coding: utf-8 -*-
import asyncio
from functools import partial, wraps
from json import JSONDecodeError

import ftfy
from glom import glom
from playwright.async_api import Browser

from abs_spider import AbstractAiSeoSpider
from domain.ai_seo import AiAnswer, AiSearchResult
from utils import create_logger, parse_nested_json

logger = create_logger(__name__)


class DouBaoSpider(AbstractAiSeoSpider):

    def __init__(self, browser: Browser, prompt: str, keyword: str, think: bool = False):
        super().__init__(browser, prompt, keyword, think)
        self.__listen_response = self.handle_listen_response_error(self.__listen_response)

    def get_home_url(self) -> str:
        return 'https://www.doubao.com/chat'

    async def _do_spider(self) -> AiAnswer:
        # 初始化信息
        self._init_data()
        await self.browser_page.goto(self.get_home_url(), timeout=600000)
        await asyncio.sleep(3)
        if self.think:
            think_btn = self.browser_page.locator("//button[@title='深度思考']")
            if await think_btn.is_visible():
                clazz = (await think_btn.get_attribute('class')).split(' ')
                # 找出点击的class名称
                target_class = [c for c in clazz if c.startswith("active-")]
                if not target_class:
                    await think_btn.click()
                    await asyncio.sleep(2)
        # 开始操作
        chat_input_element = self.browser_page.locator("//textarea[@data-testid='chat_input_input']")
        # 输入提问词
        await chat_input_element.fill(self.prompt)
        await self.browser_page.keyboard.press('Enter')
        # 监听请求
        self.browser_page.on('response', partial(self.__listen_response))
        await asyncio.sleep(2)
        await self.completed_event.wait()

        # 报错检查
        if self.fail_status:
            raise self.fail_exception

        # 关闭侧边栏
        sider_bar_element = self.browser_page.locator("//button[@data-testid='siderbar_close_btn']")
        if await sider_bar_element.is_visible():
            await sider_bar_element.click()

        # 资料弹出框
        search_result_popup_element = self.browser_page.locator("//div[contains(@class, 'search-item-transition-')]")
        # 资料按钮
        search_result_btn_list = self.browser_page.locator("//div[contains(@class, 'entry-btn-')]")
        if await search_result_btn_list.count() > 0 and not await search_result_popup_element.count() > 0:
            await search_result_btn_list.nth(-1).click()
            await asyncio.sleep(2)
        # 搜索结果元素
        search_result_element_list = self.browser_page.locator("//a[contains(@class, 'search-')]")
        ai_search_result_list = []
        if await search_result_element_list.count() > 0:
            for index,search_result_element in enumerate(await search_result_element_list.all()):
                url = await search_result_element.get_attribute('href')
                title = ''
                desc = ''
                host_name = ''
                title_element = search_result_element.locator("xpath=.//div[contains(@class, 'search-item-title-')]")
                desc_element = search_result_element.locator("xpath=.//div[contains(@class, 'search-item-summary-')]")
                host_name_element = search_result_element.locator("xpath=.//span[contains(@class, 'footer-title-')]")
                # 获取标题
                if await title_element.is_visible():
                    title = await title_element.inner_text()
                # 获取描述
                if await desc_element.is_visible():
                    desc = await desc_element.inner_text()
                # 获取来源
                if await host_name_element.is_visible():
                    host_name = await host_name_element.inner_text()
                if index+1 in self.index_data:
                    is_referenced = "1"
                else:
                    is_referenced = "0"
                ai_search_result_list.append(AiSearchResult(
                    title=title,
                    url=url,
                    host_name=host_name,
                    body=desc,
                    is_referenced=is_referenced
                ))
                logger.debug(f'搜索结果: [{host_name}]{title}({url})')
        self.ai_answer.search_result = ai_search_result_list
        # 获取回答元素
        answer_element = self.browser_page.locator("//div[@data-testid='receive_message']").nth(-1)
        box = await answer_element.bounding_box()
        logger.debug(f'answer_element: {box}')
        view_port_height = box['height'] + 500
        # 调整视口大小
        await self.browser_page.set_viewport_size({
            'width': 1920,
            'height': int(view_port_height)
        })
        # 截图
        screenshot_path = self._get_screenshot_path()
        await self.browser_page.screenshot(path=screenshot_path, full_page=True)
        self.ai_answer.screenshot_file = screenshot_path
        return self.ai_answer

    def handle_listen_response_error(self, func):
        """
        装饰器 用于处理请求回调中的异常
        :param func:
        :return:
        """

        @wraps(func)
        async def wrapper(*args, **kwargs):
            try:
                return await func(*args, **kwargs)
            except Exception as e:
                logger.error(f"{self.get_platform_name()}响应异常: {e}", exc_info=True)
                # 标记失败状态 记录异常
                self.fail_status = True
                self.fail_exception = e
                self.completed_event.set()

        return wrapper

    async def __listen_response(self, response):
        # 读取流式数据
        if '/samantha/chat/completion' in response.url:
            answer = ''
            datas = []
            index_data = list()
            response_text = ftfy.fix_text(await response.text())
            lines = response_text.split("\n\n")
            for line in lines:
                if line.startswith('data: '):
                    line = line[6:]
                try:
                    data = parse_nested_json(line)
                    datas.append(data)
                    event_data = data.get('event_data', {})
                    target_key = 'message.content.text'
                    text = glom(event_data, target_key, default=None)
                    if not text is None:
                        answer = answer + str(text)
                except JSONDecodeError:
                    continue
            logger.debug(f"ai回复: {answer}")
            self.index_data = list(set(index_data))
            self.ai_answer.answer = answer
            self.completed_event.set()

    def get_platform_id(self) -> int:
        return 5

    def get_platform_name(self) -> str:
        return 'DouBao'