"""
Anthropic API相关功能模块 - 提供Anthropic Claude API的调用和验证功能
"""
import requests

def validate_api_key(api_key):
    """
    验证Anthropic API密钥是否有效
    
    Args:
        api_key (str): 需要验证的Anthropic API密钥
    
    Returns:
        dict: 包含验证结果的字典，包括:
            - success (bool): API密钥验证成功为True，失败为False
            - return_message (str): 验证响应的具体消息，成功时为"200: Success!"，失败时为错误详情
            - balance (float): 账户余额，固定为0
            - states (str): 账户状态，付费版或免费版
    """
    url = "https://api.anthropic.com/v1/messages"
    
    headers = {
        "x-api-key": api_key,
        "content-type": "application/json",
        "anthropic-version": "2023-06-01"
    }
    
    payload = {
        "model": "claude-3-5-sonnet-20241022",
        "max_tokens": 1,
        "messages": [
            {"role": "user", "content": "Hello"}
        ]
    }
    
    try:
        response = requests.post(url, headers=headers, json=payload)
        
        if response.status_code == 200:
            states = ""
            rateLimit = response.headers.get("anthropic-ratelimit-input-tokens-limit")
            if rateLimit:
                tokens = int(rateLimit)
                if tokens == 40000:
                    states = "Tier1"
                elif tokens == 80000:
                    states = "Tier2"
                elif tokens == 160000:
                    states = "Tier3"
                elif tokens == 400000:
                    states = "Tier4"
                else:
                    states = "Unknown"
            
            return {
                "success": True,
                "return_message": "200: Success!",
                "balance": 0,
                "states": states
            }
        else:
            return_message = ""
            try:
                error_data = response.json()
                if "error" in error_data:
                    return_message = error_data["error"].get("message", "")
                    return_message = f"{response.status_code}: {return_message}"
            except:
                return_message = f"{response.status_code}: {response.text or f'HTTP错误'}"
                
            return {
                "success": False,
                "return_message": return_message,
                "balance": 0,
                "states": ""
            }
    except Exception as e:
        error_str = str(e)
        print(f"验证API密钥时出错: {error_str}")
        return {
            "success": False,
            "return_message": f"500: 请求异常: {error_str}",
            "balance": 0,
            "states": ""
        }