"""환경 설정"""
from pydantic_settings import BaseSettings
from functools import lru_cache
from typing import List


class Settings(BaseSettings):
    """환경 설정 클래스"""

    # 서버 설정
    app_name: str = "AI Service (Python)"
    host: str = "0.0.0.0"
    port: int = 8087

    # Claude API
    claude_api_key: str = "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"
    claude_model: str = "claude-sonnet-4-5-20250929"
    claude_max_tokens: int = 8192  # 4096 → 8192 증가 (더 많은 제안사항 생성 가능)
    claude_temperature: float = 0.7

    # Redis
    redis_host: str = "20.249.177.114"
    redis_port: int = 6379
    redis_password: str = ""
    redis_db: int = 4

    # Azure Event Hub
    eventhub_connection_string: str = "Endpoint=sb://hgzero-eventhub-ns.servicebus.windows.net/;SharedAccessKeyName=RootManageSharedAccessKey;SharedAccessKey=VUqZ9vFgu35E3c6RiUzoOGVUP8IZpFvlV+AEhC6sUpo="
    eventhub_name: str = "hgzero-eventhub-name"
    eventhub_consumer_group: str = "ai-transcript-group"

    # CORS
    cors_origins: List[str] = [
        "http://localhost:8888",
        "http://localhost:8080",
        "http://localhost:3000",
        "http://127.0.0.1:8888",
        "http://127.0.0.1:8080",
        "http://127.0.0.1:3000",
        "http://localhost:*"  # 모든 localhost 포트 허용
    ]

    # 로깅
    log_level: str = "INFO"

    # 분석 임계값 (실시간 응답을 위해 낮춤)
    min_segments_for_analysis: int = 2  # 2개 세그먼트 (약 30초, 빠른 피드백)
    text_retention_seconds: int = 300  # 5분

    class Config:
        env_file = ".env"
        case_sensitive = False


@lru_cache()
def get_settings() -> Settings:
    """싱글톤 설정 인스턴스"""
    return Settings()