"""
配置管理模块
从环境变量加载配置
"""
import os
from pathlib import Path
from typing import Optional
from pydantic_settings import BaseSettings
from functools import lru_cache


# 查找.env文件的位置
def find_env_file():
    """查找.env文件，支持从backend目录或项目根目录启动"""
    current_dir = Path.cwd()

    # 尝试当前目录
    env_path = current_dir / ".env"
    if env_path.exists():
        print(f"[Config] 找到.env文件: {env_path}")
        return str(env_path)

    # 尝试父目录（项目根目录）
    env_path = current_dir.parent / ".env"
    if env_path.exists():
        print(f"[Config] 找到.env文件: {env_path}")
        return str(env_path)

    # 尝试backend的父目录
    if current_dir.name == "backend":
        env_path = current_dir.parent / ".env"
        if env_path.exists():
            print(f"[Config] 找到.env文件: {env_path}")
            return str(env_path)

    # 尝试从环境变量指定的路径
    if os.getenv('ENV_FILE'):
        env_path = Path(os.getenv('ENV_FILE'))
        if env_path.exists():
            print(f"[Config] 从ENV_FILE环境变量找到.env文件: {env_path}")
            return str(env_path)

    print(f"[Config] 警告：未找到.env文件，当前目录: {current_dir}")
    # 默认返回当前目录的.env
    return ".env"


class Settings(BaseSettings):
    """应用配置"""

    # Tushare配置
    tushare_token: str = ""

    # LLM配置
    zhipuai_api_key: str = ""
    deepseek_api_key: str = ""

    # 数据库配置
    database_url: str = "sqlite:///./stock_agent.db"

    # API配置
    api_host: str = "0.0.0.0"
    api_port: int = 8000
    debug: bool = True

    # 安全配置
    secret_key: str = "change-this-secret-key-in-production"
    rate_limit: str = "100/minute"

    # JWT配置
    jwt_algorithm: str = "HS256"
    jwt_expire_days: int = 7

    # 腾讯云短信配置
    tencent_sms_app_id: str = "1400961527"
    tencent_sms_secret_id: str = "AKIDxnbGj281iHtKallqqzvlV5YxBCrPltnS"  # 腾讯云SecretId
    tencent_sms_secret_key: str = "ta6PXTMBsX7dzA7IN6uYUFn8F9uTovoU"  # 腾讯云SecretKey
    tencent_sms_sign_id: str = "629073"
    tencent_sms_template_id: str = "2353142"

    # 验证码配置
    code_expire_minutes: int = 5
    code_resend_seconds: int = 60
    code_max_per_hour: int = 10

    # 白名单手机号（无需验证码即可登录）
    whitelist_phones: str = "18583366860,18583926860"

    # CORS配置
    cors_origins: str = "http://localhost:8000,http://127.0.0.1:8000"

    # Binance 配置（公开数据不需要 API 密钥）
    binance_api_key: str = ""
    binance_api_secret: str = ""

    # 飞书机器人配置
    feishu_webhook_url: str = "https://open.feishu.cn/open-apis/bot/v2/hook/8a1dcf69-6753-41e2-a393-edc4f7822db0"
    feishu_enabled: bool = True  # 是否启用飞书通知

    # Telegram 机器人配置
    telegram_bot_token: str = ""  # 从 @BotFather 获取
    telegram_channel_id: str = ""  # 频道 ID，如 @your_channel 或 -1001234567890
    telegram_enabled: bool = True  # 是否启用 Telegram 通知

    # 加密货币交易智能体配置
    crypto_symbols: str = "BTCUSDT,ETHUSDT"  # 监控的交易对，逗号分隔
    crypto_analysis_interval: int = 60  # 分析间隔（秒）
    crypto_llm_threshold: float = 0.7  # 触发 LLM 分析的置信度阈值

    # Brave Search API 配置
    brave_api_key: str = ""

    # 模拟交易配置
    paper_trading_enabled: bool = True  # 是否启用模拟交易
    paper_trading_position_a: float = 1000  # A级信号仓位 (USDT)
    paper_trading_position_b: float = 500   # B级信号仓位 (USDT)
    paper_trading_position_c: float = 200   # C级信号仓位 (USDT)

    class Config:
        env_file = find_env_file()
        case_sensitive = False


@lru_cache()
def get_settings() -> Settings:
    """获取配置单例"""
    return Settings()