# ///
# config.py
# 描述：系统配置管理，支持多环境配置
# 作者：AI Generated
# 创建日期：2026-04-05
# ///

import os
from typing import Dict, List, Optional
from pydantic import BaseModel
from pydantic_settings import BaseSettings


class NodeConfig(BaseModel):
    node_id: str
    name: str
    api_url: str
    api_key: str
    enabled: bool = True
    description: str = ""
    group: str = "default"


class PluginConfig(BaseModel):
    name: str
    enabled: bool = True
    config: Dict = {}


class WebhookConfig(BaseModel):
    urls: List[str] = []
    enabled: bool = False
    timeout: int = 10
    retry_times: int = 3
    format: str = "wechat"
    event_types: List[str] = ["api_error", "wechat_offline", "wechat_online", "node_offline", "node_online"]


class MonitorConfig(BaseModel):
    enabled: bool = True
    check_interval: int = 60


class RedisConfig(BaseModel):
    url: str = "redis://localhost:6379/0"
    db: int = 0
    password: Optional[str] = None


class DatabaseConfig(BaseModel):
    url: str = "postgresql://wxauto:wxauto@localhost:5432/wxauto"
    pool_size: int = 10
    max_overflow: int = 20

    class Config:
        populate_by_name = True


class Settings(BaseSettings):
    app_name: str = "WXAuto Center"
    host: str = "0.0.0.0"
    port: int = 8080
    debug: bool = False
    secret_key: str = "wxauto-center-secret-key-change-in-production"

    nodes: List[NodeConfig] = []
    plugins: List[PluginConfig] = []
    webhook: WebhookConfig = WebhookConfig()
    monitor: MonitorConfig = MonitorConfig()
    redis: RedisConfig = RedisConfig()
    database: DatabaseConfig = DatabaseConfig()

    cors_origins: List[str] = ["*"]
    api_prefix: str = "/api/v1"
    external_api_key: str = "your-external-api-key"
    workers: int = 1

    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"
        populate_by_name = True
        extra = "allow"
        env_nested_delimiter = "_"

_settings: Optional[Settings] = None
_config_file: str = "config.json"


def get_settings() -> Settings:
    global _settings
    if _settings is None:
        _settings = Settings()
        _settings.database.url = os.environ.get("DATABASE_URL", _settings.database.url)
        _settings.redis.url = os.environ.get("REDIS_URL", _settings.redis.url)
    return _settings


def update_settings(**kwargs):
    global _settings
    if _settings is None:
        _settings = Settings()
    for key, value in kwargs.items():
        if hasattr(_settings, key):
            setattr(_settings, key, value)


def load_config_from_file(config_file: str = "config.json") -> bool:
    global _settings, _config_file
    _config_file = config_file

    if not os.path.exists(config_file):
        return False

    try:
        import json
        with open(config_file, "r", encoding="utf-8") as f:
            data = json.load(f)

        settings = get_settings()
        settings.app_name = data.get("app_name", settings.app_name)
        settings.host = data.get("host", settings.host)
        settings.port = data.get("port", settings.port)
        settings.debug = data.get("debug", settings.debug)
        settings.secret_key = data.get("secret_key", settings.secret_key)
        settings.cors_origins = data.get("cors_origins", settings.cors_origins)
        settings.api_prefix = data.get("api_prefix", settings.api_prefix)
        settings.external_api_key = data.get("external_api_key", settings.external_api_key)

        plugins_data = data.get("plugins", [])
        settings.plugins = [PluginConfig(**p) for p in plugins_data]

        monitor_data = data.get("monitor", {})
        settings.monitor = MonitorConfig(**monitor_data) if monitor_data else MonitorConfig()

        settings.workers = data.get("workers", 1)

        settings.database.url = os.environ.get("DATABASE_URL", settings.database.url)
        settings.redis.url = os.environ.get("REDIS_URL", settings.redis.url)

        return True
    except Exception:
        return False


def save_config_to_file(config_file: str = None):
    global _config_file
    if config_file:
        _config_file = config_file

    import json
    settings = get_settings()
    config_data = {
        "app_name": settings.app_name,
        "host": settings.host,
        "port": settings.port,
        "debug": settings.debug,
        "secret_key": settings.secret_key,
        "plugins": [p.model_dump() for p in settings.plugins],
        "monitor": settings.monitor.model_dump(),
        "workers": settings.workers,
        "cors_origins": settings.cors_origins,
        "api_prefix": settings.api_prefix,
        "external_api_key": settings.external_api_key,
    }
    with open(_config_file, "w", encoding="utf-8") as f:
        json.dump(config_data, f, indent=2, ensure_ascii=False)


class ConfigManager:
    def __init__(self, config_file: str = "config.json"):
        self.config_file = config_file

    def get_node(self, node_id: str) -> Optional[NodeConfig]:
        settings = get_settings()
        for node in settings.nodes:
            if node.node_id == node_id:
                return node
        return None

    def get_all_nodes(self) -> List[NodeConfig]:
        return get_settings().nodes

    def get_enabled_nodes(self) -> List[NodeConfig]:
        return [n for n in get_settings().nodes if n.enabled]

    def add_node(self, node: NodeConfig) -> bool:
        existing = self.get_node(node.node_id)
        if existing:
            return False
        get_settings().nodes.append(node)
        return True

    def update_node(self, node_id: str, **kwargs) -> bool:
        for i, node in enumerate(get_settings().nodes):
            if node.node_id == node_id:
                for key, value in kwargs.items():
                    if hasattr(node, key):
                        setattr(node, key, value)
                return True
        return False

    def remove_node(self, node_id: str) -> bool:
        for i, node in enumerate(get_settings().nodes):
            if node.node_id == node_id:
                get_settings().nodes.pop(i)
                return True
        return False

    def save_config(self):
        save_config_to_file(self.config_file)

    def load_config(self) -> bool:
        return load_config_from_file(self.config_file)