# -*- coding: utf-8 -*-
"""诊断标题输入框的正确选择器"""
import socket, json, urllib.request, urllib.parse

HOST = 'localhost'
PORT = 9223

pages = json.loads(urllib.request.urlopen(f'http://{HOST}:{PORT}/json').read())
page_id = [p['id'] for p in pages if 'baijiahao.baidu.com' in p['url']][0]

ws_url = f'ws://{HOST}:{PORT}/devtools/page/{page_id}'
parsed = urllib.parse.urlparse(ws_url)
sock = socket.create_connection((parsed.hostname, parsed.port or 80), timeout=15)
key = 'dGhlIHNhbXBsZSBub25jZQ=='
handshake = f'GET {parsed.path} HTTP/1.1\r\nHost:{parsed.hostname}:{parsed.port}\r\nUpgrade:websocket\r\nConnection:Upgrade\r\nSec-WebSocket-Key:{key}\r\nSec-WebSocket-Version:13\r\n\r\n'
sock.send(handshake.encode())
resp = b''
while b'\r\n\r\n' not in resp:
    resp += sock.recv(4096)

def send(s, d):
    data = json.dumps(d).encode('utf-8')
    n = len(data)
    mask = b'\x01\x02\x03\x04'
    if n <= 125:
        hdr = bytes([0x81, n|0x80]) + mask
    elif n <= 65535:
        hdr = bytes([0x81, 0xFE]) + n.to_bytes(2, 'big') + mask
    s.send(hdr + bytes(data[i] ^ mask[i%4] for i in range(n)))

def recv(s):
    h = s.recv(2)
    n = h[1] & 0x7f
    if n == 126:
        n = int.from_bytes(s.recv(2), 'big')
    elif n == 127:
        n = int.from_bytes(s.recv(8), 'big')
    return s.recv(n).decode('utf-8')

# 查找标题输入框 - 尝试多种方式
expr = """
(function(){
    var results = [];
    
    // 方法1: 查找包含titleWrap的元素
    var titleWrap = document.querySelector('[class*="titleWrap"]');
    if(titleWrap) results.push({method: 'titleWrap', html: titleWrap.outerHTML.substring(0,500)});
    
    // 方法2: 查找包含titleInput的元素
    var titleInput = document.querySelector('[class*="titleInput"]');
    if(titleInput) results.push({method: 'titleInput', html: titleInput.outerHTML.substring(0,500)});
    
    // 方法3: 查找包含title-input的元素
    var titleInput2 = document.querySelector('[class*="title-input"]');
    if(titleInput2) results.push({method: 'title-input', html: titleInput2.outerHTML.substring(0,500)});
    
    // 方法4: 在 form 中查找
    var forms = document.querySelectorAll('form');
    for(var f of forms){
        var inputs = f.querySelectorAll('input');
        for(var inp of inputs){
            results.push({method: 'form input', type: inp.type, placeholder: inp.placeholder, class: inp.className.substring(0,50)});
        }
    }
    
    // 方法5: 查找所有带input的父元素
    var cheetahInputs = document.querySelectorAll('cheetah-input, * > cheetah-input');
    for(var ci of cheetahInputs){
        results.push({method: 'cheetah-input', tag: ci.tagName, class: ci.className.substring(0,50)});
    }
    
    return JSON.stringify(results);
})()
"""
send(sock, {'id':1,'method':'Runtime.evaluate','params':{'expression':expr}})
r = recv(sock)
print('标题元素诊断:')
print(json.loads(r)['result']['result']['value'])

sock.close()
