import requests
import json
import os

CONFIG_PATH = os.path.join(os.path.dirname(__file__), 'config.json')

def load_config():
    if os.path.exists(CONFIG_PATH):
        with open(CONFIG_PATH, 'r') as f:
            return json.load(f)
    return {"server_url": "http://localhost:5000", "default_expiry": "24h"}

def save_config(config):
    with open(CONFIG_PATH, 'w') as f:
        json.dump(config, f, indent=4)

def upload_file(filepath, expiry='24h', server_url=None, progress_callback=None):
    if server_url is None:
        config = load_config()
        server_url = config.get('server_url', 'http://localhost:5000')
    
    url = f"{server_url}/api/upload"
    
    with open(filepath, 'rb') as f:
        files = {'file': (os.path.basename(filepath), f)}
        data = {'expiry': expiry}
        
        response = requests.post(url, files=files, data=data)
    
    if response.status_code == 200:
        return response.json()
    else:
        error_msg = response.json().get('error', '未知错误')
        raise Exception(f"上传失败: {error_msg}")

def get_file_info(file_id, server_url=None):
    if server_url is None:
        config = load_config()
        server_url = config.get('server_url', 'http://localhost:5000')
    
    url = f"{server_url}/api/file/{file_id}"
    response = requests.get(url)
    
    if response.status_code == 200:
        return response.json()
    else:
        return None