import requests
import re
#一、首先定义获取弹幕huqudanmu函数   
def huoqudanmu(cid):
    url=f'https://api.bilibili.com/x/v1/dm/list.so?oid={cid}'#通过cid值获取对应视频的弹幕
    Hddf = {
    "user-agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0"
    }
    resp= requests.get(url,headers=Hddf)#从网址获取弹幕
    resp.encoding="utf-8"#弹幕中文编码
    Data=resp.text#提取text文本
    context=re.findall('<d p=.*?>(.*?)</d>',Data)#提取弹幕文本
    print(context)
    for index in context:
        with open('总弹幕.txt',mode='a',encoding='utf-8')as f:
            f.write(index)#写入text文件
            f.write('\n')

#二、获取所需弹幕地址
headers0={
    "user-agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0"
}#请求头
for page0 in range(1,11):#从搜索的十页获取网址，一页30个视频
    if page0==1 :
        url="https://search.bilibili.com/all?vt=93020172&keyword=2024%E5%B7%B4%E9%BB%8E%E5%A5%A5%E8%BF%90%E4%BC%9A&from_source=webtop_search&spm_id_from=333.1007&search_source=5"
    else:
        url=f"https://search.bilibili.com/all?vt=93020172&keyword=2024%E5%B7%B4%E9%BB%8E%E5%A5%A5%E8%BF%90%E4%BC%9A&from_source=webtop_search&spm_id_from=333.1007&search_source=5&page={page0}"
    res0=requests.get(url,headers=headers0)#获取网页数据
    Text0=res0.text
    bvid=re.findall('bvid:"(.*?)",title:',Text0)#获取视频bvid号
    for bvid1 in bvid:#
        url=f"https://www.bilibili.com/video/{bvid1.strip()}/?spm_id_from=333.337.search-card.all.click&vd_source=516714ff716c382225c801afa2c87d8d"
        res0=requests.get(url,headers=headers0)#获取视频数据
        Text0=res0.text
        oid=re.findall('"embedPlayer":{"p":.*?,"aid":.*?,"bvid":".*?","cid":(.*?),',Text0)#获取oid值(多余空格去除，不然匹配不到)
        for oid1 in oid:#提取oid值
            huoqudanmu(oid1)#调用获取弹幕的函数