"""
通用工具函数
"""
import os
import json
import uuid
from datetime import datetime
from typing import Dict


def get_current_timestamp():
    """获取当前时间戳"""
    return int(datetime.utcnow().timestamp())


def generate_unique_id():
    """生成唯一ID"""
    return str(uuid.uuid4())


def format_api_response(content: str, conversation_id: str = None, model: str = "qwen-plus"):
    """格式化API响应"""
    return {
        "id": generate_unique_id(),
        "conversationId": conversation_id or generate_unique_id(),
        "content": content,
        "model": model,
        "createdAt": get_current_timestamp()
    }


def log_request(method: str, path: str, client_ip: str = "unknown"):
    """记录请求日志"""
    print(f"[INFO] {datetime.now().strftime('%Y-%m-%d %H:%M:%S')} - "
          f"HTTP {method} {path} - IP: {client_ip}")


def log_response(status_code: int, process_time: float):
    """记录响应日志"""
    print(f"[INFO] {datetime.now().strftime('%Y-%m-%d %H:%M:%S')} - "
          f"Response {status_code}, Process Time: {process_time:.2f}ms")


def extract_delta_content(full_content: str, previous_content: str) -> str:
    """提取增量内容"""
    if len(full_content) > len(previous_content):
        return full_content[len(previous_content):]
    return ""