# app/config/settings.py
import os
from typing import Optional

class Settings:
    """환경 변수 기반 설정 클래스"""
    
    # 애플리케이션 메타데이터
    APP_TITLE = os.getenv("APP_TITLE", "음식점 Vector DB 구축 서비스")
    APP_VERSION = os.getenv("APP_VERSION", "1.0.0")
    APP_DESCRIPTION = os.getenv("APP_DESCRIPTION", "소상공인을 위한 AI 기반 경쟁업체 분석 및 액션 추천 시스템")
    
    # 서버 설정
    HOST = os.getenv("HOST", "0.0.0.0")
    PORT = int(os.getenv("PORT", "8000"))
    LOG_LEVEL = os.getenv("LOG_LEVEL", "info")
    
    # Restaurant API 설정
    RESTAURANT_API_HOST = os.getenv("RESTAURANT_API_HOST", "0.0.0.0")
    RESTAURANT_API_PORT = os.getenv("RESTAURANT_API_PORT", "18000")
    
    @property
    def RESTAURANT_API_URL(self) -> str:
        return f"http://{self.RESTAURANT_API_HOST}:{self.RESTAURANT_API_PORT}"
    
    # Review API 설정  
    REVIEW_API_HOST = os.getenv("REVIEW_API_HOST", "0.0.0.0")
    REVIEW_API_PORT = os.getenv("REVIEW_API_PORT", "19000")
    
    @property
    def REVIEW_API_URL(self) -> str:
        return f"http://{self.REVIEW_API_HOST}:{self.REVIEW_API_PORT}"
    
    # Claude API 설정
    CLAUDE_API_KEY = os.getenv("CLAUDE_API_KEY", "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")
    CLAUDE_MODEL = os.getenv("CLAUDE_MODEL", "claude-sonnet-4-20250514")
    
    # Vector DB 설정
    VECTOR_DB_PATH = os.getenv("VECTOR_DB_PATH", "./vectordb")
    VECTOR_DB_COLLECTION = os.getenv("VECTOR_DB_COLLECTION", "restaurant_reviews")
    EMBEDDING_MODEL = os.getenv("EMBEDDING_MODEL", "sentence-transformers/all-MiniLM-L6-v2")
    
    # 데이터 수집 설정
    MAX_RESTAURANTS_PER_CATEGORY = int(os.getenv("MAX_RESTAURANTS_PER_CATEGORY", "50"))
    MAX_REVIEWS_PER_RESTAURANT = int(os.getenv("MAX_REVIEWS_PER_RESTAURANT", "100"))
    REQUEST_DELAY = float(os.getenv("REQUEST_DELAY", "0.1"))
    REQUEST_TIMEOUT = int(os.getenv("REQUEST_TIMEOUT", "600"))
    
    # 환경 감지
    @property
    def IS_K8S_ENV(self) -> bool:
        """Kubernetes 환경인지 확인"""
        return (
            os.getenv("KUBERNETES_SERVICE_HOST") is not None or
            self.RESTAURANT_API_HOST in ["restaurant-api-service", "kakao-review-api-service"] or
            self.REVIEW_API_HOST in ["restaurant-api-service", "kakao-review-api-service"]
        )
    
    def get_restaurant_api_url(self) -> str:
        """환경에 따른 Restaurant API URL 반환"""
        if self.IS_K8S_ENV:
            host = "restaurant-api-service"
            port = "80"
        else:
            host = self.RESTAURANT_API_HOST
            port = self.RESTAURANT_API_PORT
        return f"http://{host}:{port}"
    
    def get_review_api_url(self) -> str:
        """환경에 따른 Review API URL 반환"""
        if self.IS_K8S_ENV:
            host = "kakao-review-api-service"
            port = "80"
        else:
            host = self.REVIEW_API_HOST
            port = self.REVIEW_API_PORT
        return f"http://{host}:{port}"

# 설정 인스턴스
settings = Settings()