# Configuration file for this FastAPI app.
import os
from pydantic import BaseSettings
from typing import Any, Dict, List, Optional, Union

class Settings(BaseSettings):
    AETHER_CFG: Dict[str, Any] = {
        "id": os.getenv('AE_CFG_ID', 0)
    }
    
    JWT_KEY: str = os.getenv('AE_API_JWT_KEY', 'EHmSXZFKfMEW65E8kxCKmQ')

    # Database Connection
    # We use first-level attributes so BaseSettings can map them automatically if needed,
    # but we keep the DB dictionary structure for compatibility with the rest of the app.
    DB_SERVER: str = os.getenv('AE_DB_SERVER', 'mariadb')
    DB_PORT: str = os.getenv('AE_DB_PORT', '3306')
    DB_NAME: str = os.getenv('AE_DB_NAME', 'aether_dev')
    DB_USER: str = os.getenv('AE_DB_USERNAME', 'aether_dev')
    DB_PASS: str = os.getenv('AE_DB_PASSWORD', '')

    @property
    def SQLALCHEMY_DB_URI(self) -> str:
        # Use a property to ensure the URI is built dynamically and safely
        return f"mysql://{self.DB_USER}:{self.DB_PASS}@{self.DB_SERVER}:{self.DB_PORT}/{self.DB_NAME}"

    @property
    def DB(self) -> Dict[str, Any]:
        # Compatibility dictionary
        return {
            "server": self.DB_SERVER,
            "port": self.DB_PORT,
            "name": self.DB_NAME,
            "username": self.DB_USER,
            "password": self.DB_PASS,
            "connect_timeout": int(os.getenv('AE_DB_CONNECTION_TIMEOUT', 20)),
            "pool_recycle": int(os.getenv('AE_DB_POOL_RECYCLE', 1800))
        }

    # Logging
    LOG_PATH: Dict[str, str] = {
        "app": os.getenv('AE_API_LOG_PATH', '/logs/aether_api.log')
    }

    # Redis
    REDIS: Dict[str, str] = {
        "server": os.getenv('AE_REDIS_SERVER', 'redis'),
        "port": os.getenv('AE_REDIS_PORT', '6379')
    }

    # --- CRITICAL CONFIGURATIONS ---
    # The following dictionaries are REQUIRED by the application logic.
    # Do not remove them during refactors, as the app (e.g., lib_email.py) 
    # accesses these attributes directly on the settings object.

    # Send SMTP Email
    # Used by app/lib_email.py for outbound communications.
    SMTP: Dict[str, str] = {
        "server": os.getenv('AE_SMTP_SERVER', 'linode.oneskyit.com'),
        "port": os.getenv('AE_SMTP_PORT', '465'),
        "username": os.getenv('AE_SMTP_USERNAME', 'send_mail'),
        "password": os.getenv('AE_SMTP_PASSWORD', 'set-in-ae-sql-db-cnf-tbl')
    }

    # Server Hosted File Paths
    # Used extensively for file uploads, downloads, and exports.
    FILES_PATH: Dict[str, str] = {
        "hosted_files_root": os.getenv('AE_FILES_PATH_ROOT', '/srv/hosted_files'),
        "hosted_tmp_root": os.getenv('AE_FILES_PATH_TMP', '/srv/hosted_tmp')
    }

    # --- END CRITICAL CONFIGURATIONS ---

    # CORS
    ORIGINS_REGEX: str = os.getenv('AE_API_ORIGINS_REGEX', '(https://.*\.oneskyit\.com)|(https://.*\.oneskyit\.com:4443)')
    ORIGINS: List[str] = ['https://oneskyit.com']

settings = Settings()