import asyncio
import base64
from crawl4ai import *
from pathlib import Path
import json
import pickle
OUTPUT_DIR = Path("output").absolute()
from crawl4ai.async_configs import BrowserConfig

# Using proxy URL
browser_config = BrowserConfig(
    # proxy="http://localhost:1881", 
    headless=False, 
    # user_agent_mode="random",
    # use_managed_browser=True,
    verbose=True,
    # use_persistent_context=True,
    user_data_dir=OUTPUT_DIR / "user_data_dir"
                               )
# 如果目录不存在则创建
def ensure_output_dir(output_dir: Path):
    if not output_dir.exists():
        output_dir.mkdir(parents=True, exist_ok=True)

# 保存到文件
def save_to_file(content, filename:Path):
    ensure_output_dir(filename.parent)
    if not isinstance(content, str):
    # 如果可以用 json 格式化，则格式化
        try:
            content = json.dumps(content, indent=4, ensure_ascii=False)
        except:
            # 如果不是 str ，则格式化
            if not isinstance(content, str):
                content = str(content)
    
    with open(filename, "w", encoding="utf-8") as file:
        file.write(content)
def save_to_pickle(obj, filename):
    with open(filename, "wb") as file:
        pickle.dump(obj, file)
    return filename    

def save_base64_to_file(base64_str, file_path):
    with open(file_path, 'wb') as file:
        file.write(base64.b64decode(base64_str))
    return file_path
def load_from_pickle(filename):
    with open(filename, "rb") as file:
        return pickle.load(file)
    
def save_all_result(result:CrawlResult, output_dir):
    # save result obj to pickle
    save_to_pickle(result, output_dir / "result.pickle")
    result_attributes = dir(result)
    for attr in result_attributes:
        if hasattr(result, attr) and not attr.startswith("__"):
            format_str = f"{attr}: {result.__getattribute__(attr)}"
            save_to_file(format_str, output_dir / f"{attr}.txt")

# 如果字符串有空格，替换成加号
def replace_space(search_key:str):
    if search_key.find(" ") != -1:
        return search_key.replace(" ", "+")
    return search_key