# -*- coding: utf-8 -*-
"""
消息模块基础, 用于打开浏览器等相关操作
"""
import random

from playwright.sync_api import sync_playwright
import time


class CryptoCrawler:
    def __init__(self, url, selector, headless=True):
        self.url = url
        self.selector = selector
        self.headless = headless

    def main(self):
        with sync_playwright() as playwright:
            browser = playwright.webkit.launch(headless=self.headless)
            if self.headless:
                context = browser.new_context()
            else:
                context = browser.new_context(viewport={'width': 1920, 'height': 1080})
            page = context.new_page()

            result = ""
            try:
                page.goto(self.url)
                page.wait_for_load_state('load')
                time.sleep(2)  # 确保页面完全加载

                element = page.query_selector(self.selector)
                if element:
                    res = element.text_content().strip()
                    result = res
            except Exception as e:
                err_str = f"Error fetching {self.url}: {e}"
                return err_str

            page.close()
            browser.close()

            if result:
                return result
            return None