"""
配置管理
"""
import os
from pathlib import Path
from typing import Optional
from dataclasses import dataclass
from pydantic import BaseModel


@dataclass
class DatabaseConfig:
    """数据库配置"""
    url: str = "sqlite:///./data/alert_platform.db"


@dataclass
class COSConfig:
    """腾讯云 COS 存储配置（通过 CVM 角色认证，无需密钥）"""
    region: str = "ap-beijing"
    bucket: str = ""                   # 格式: bucketname-appid
    upload_prefix: str = "alerts"      # 对象 Key 前缀
    presign_expire: int = 1800         # 预签名URL有效期（秒），默认30分钟
    enabled: bool = False              # 是否启用 COS


@dataclass
class AppConfig:
    """应用配置"""
    host: str = "0.0.0.0"
    port: int = 8000
    debug: bool = True
    dev_mode: bool = True  # 开发模式：跳过认证验证，返回超级管理员权限


@dataclass
class AIModelConfig:
    """AI 模型配置"""
    endpoint: str = ""
    api_key: str = ""


@dataclass
class VLMConfig:
    """VLM 视觉语言模型配置"""
    api_key: str = ""
    base_url: str = "https://dashscope.aliyuncs.com/compatible-mode/v1"
    model: str = "qwen3-vl-flash-2026-01-22"
    timeout: int = 10
    enabled: bool = False
    enable_thinking: bool = False


@dataclass
class WeChatConfig:
    """企微通知配置"""
    corp_id: str = ""
    agent_id: str = ""
    secret: str = ""
    token: str = ""
    encoding_aes_key: str = ""
    enabled: bool = False
    test_uids: str = ""        # 演示模式：逗号分隔的企微userid，如 "zhangsan,lisi"
    service_base_url: str = "" # H5页面公网地址，如 https://vsp.viewshanghai.com


@dataclass
class AgentConfig:
    """交互Agent配置"""
    llm_api_key: str = ""
    llm_base_url: str = "https://dashscope.aliyuncs.com/compatible-mode/v1"
    llm_model: str = "qwen-plus"
    llm_timeout: int = 15
    enabled: bool = False


@dataclass
class RedisConfig:
    """Redis 配置"""
    host: str = "localhost"
    port: int = 6379
    password: str = ""
    db: int = 0
    max_connections: int = 50
    decode_responses: bool = True
    enabled: bool = True


@dataclass
class CameraNameConfig:
    """摄像头名称格式化配置"""
    # WVP API基础URL
    wvp_api_base: str = "http://localhost:18080"

    # 显示格式模板（支持变量：{camera_code}, {name}, {stream}）
    # 可选格式：
    # - "{name}" - 仅名称（推荐，告警列表使用）
    # - "{camera_code} {name}/{stream}" - cam_xxx 名称/流id（完整格式）
    # - "{name}/{stream}" - 名称/流id
    # - "{camera_code}" - 仅code
    display_format: str = "{name}"

    # 名称字段优先级（从高到低）
    # 从StreamProxy对象中提取名称时的字段优先级
    # 注意：gb_name 可能包含 "/" 后缀，会自动去除
    name_field_priority: list = None

    # 查询超时（秒）
    query_timeout: int = 15

    def __post_init__(self):
        if self.name_field_priority is None:
            # 默认优先级：gb_name > app > stream
            self.name_field_priority = ["gbName", "app", "stream"]


class Settings(BaseModel):
    """全局配置"""
    database: DatabaseConfig = DatabaseConfig()
    cos: COSConfig = COSConfig()
    app: AppConfig = AppConfig()
    ai_model: AIModelConfig = AIModelConfig()
    vlm: VLMConfig = VLMConfig()
    wechat: WeChatConfig = WeChatConfig()
    agent: AgentConfig = AgentConfig()
    redis: RedisConfig = RedisConfig()
    camera_name: CameraNameConfig = CameraNameConfig()


def load_settings() -> Settings:
    """从环境变量加载配置"""
    from dotenv import load_dotenv
    load_dotenv()

    return Settings(
        database=DatabaseConfig(
            url=os.getenv("DATABASE_URL", "sqlite:///./data/alert_platform.db"),
        ),
        cos=COSConfig(
            region=os.getenv("COS_REGION", "ap-beijing"),
            bucket=os.getenv("COS_BUCKET", ""),
            upload_prefix=os.getenv("COS_UPLOAD_PREFIX", "alerts"),
            presign_expire=int(os.getenv("COS_PRESIGN_EXPIRE", "1800")),
            enabled=os.getenv("COS_ENABLED", "false").lower() == "true",
        ),
        app=AppConfig(
            host=os.getenv("APP_HOST", "0.0.0.0"),
            port=int(os.getenv("APP_PORT", "8000")),
            debug=os.getenv("DEBUG", "true").lower() == "true",
            dev_mode=os.getenv("DEV_MODE", "true").lower() == "true",
        ),
        ai_model=AIModelConfig(
            endpoint=os.getenv("AI_MODEL_ENDPOINT", ""),
            api_key=os.getenv("AI_MODEL_API_KEY", ""),
        ),
        vlm=VLMConfig(
            api_key=os.getenv("DASHSCOPE_API_KEY", ""),
            base_url=os.getenv("VLM_BASE_URL", "https://dashscope.aliyuncs.com/compatible-mode/v1"),
            model=os.getenv("VLM_MODEL", "qwen3-vl-flash-2026-01-22"),
            timeout=int(os.getenv("VLM_TIMEOUT", "10")),
            enabled=os.getenv("VLM_ENABLED", "false").lower() == "true",
            enable_thinking=os.getenv("VLM_ENABLE_THINKING", "false").lower() == "true",
        ),
        wechat=WeChatConfig(
            corp_id=os.getenv("WECHAT_CORP_ID", ""),
            agent_id=os.getenv("WECHAT_AGENT_ID", ""),
            secret=os.getenv("WECHAT_SECRET", ""),
            token=os.getenv("WECHAT_TOKEN", ""),
            encoding_aes_key=os.getenv("WECHAT_ENCODING_AES_KEY", ""),
            enabled=os.getenv("WECHAT_ENABLED", "false").lower() == "true",
            test_uids=os.getenv("WECHAT_TEST_UIDS", ""),
            service_base_url=os.getenv("SERVICE_BASE_URL", ""),
        ),
        agent=AgentConfig(
            llm_api_key=os.getenv("DASHSCOPE_API_KEY", ""),
            llm_base_url=os.getenv("AGENT_LLM_BASE_URL", "https://dashscope.aliyuncs.com/compatible-mode/v1"),
            llm_model=os.getenv("AGENT_LLM_MODEL", "qwen-plus"),
            llm_timeout=int(os.getenv("AGENT_LLM_TIMEOUT", "15")),
            enabled=os.getenv("AGENT_ENABLED", "false").lower() == "true",
        ),
        redis=RedisConfig(
            host=os.getenv("REDIS_HOST", "localhost"),
            port=int(os.getenv("REDIS_PORT", "6379")),
            password=os.getenv("REDIS_PASSWORD", ""),
            db=int(os.getenv("REDIS_DB", "0")),
            max_connections=int(os.getenv("REDIS_MAX_CONNECTIONS", "50")),
            enabled=os.getenv("REDIS_ENABLED", "true").lower() == "true",
        ),
        camera_name=CameraNameConfig(
            wvp_api_base=os.getenv("WVP_API_BASE", "http://localhost:18080"),
            display_format=os.getenv("CAMERA_NAME_FORMAT", "{name}"),
            query_timeout=int(os.getenv("CAMERA_QUERY_TIMEOUT", "15")),
        ),
    )


settings = load_settings()