# app/config.py - Application configuration

from pydantic_settings import BaseSettings
from typing import Optional
from functools import lru_cache


class Settings(BaseSettings):
    """Application settings loaded from environment variables."""
    
    # Application
    APP_NAME: str = "Scam Honeypot API"
    VERSION: str = "2.0.0"
    DEBUG: bool = False
    GUVI_API_KEY: str = ""  # Set via environment variable 'GUVI_API_KEY'
    
    # LLM Configuration
    LLM_PROVIDER: str = "groq"
    OPENAI_API_KEY: Optional[str] = None
    ANTHROPIC_API_KEY: Optional[str] = None
    GROQ_API_KEY: Optional[str] = None
    OPENROUTER_API_KEY: Optional[str] = None
    
    # Model names
    GPT_MODEL: str = "gpt-4-turbo-preview"
    CLAUDE_MODEL: str = "claude-3-sonnet-20240229"
    GROQ_MODEL: str = "llama-3.3-70b-versatile"
    OPENROUTER_MODEL: str = "meta-llama/llama-3.1-70b-instruct"
    
    # LLM parameters
    LLM_TEMPERATURE: float = 0.7
    LLM_MAX_TOKENS: int = 500
    
    # Conversation
    MAX_CONVERSATION_LENGTH: int = 50
    CONVERSATION_TTL_HOURS: int = 24
    
    # Rate Limiting
    RATE_LIMIT_PER_MINUTE: int = 60
    
    # Feature Flags
    ENABLE_LLM_DETECTION: bool = True
    ENABLE_LLM_RESPONSES: bool = True
    ENABLE_THREAT_INTELLIGENCE: bool = True
    ENABLE_LAW_ENFORCEMENT_API: bool = True
    
    # Database (SQLite default, PostgreSQL/Supabase via env)
    DATABASE_URL: str = "sqlite+aiosqlite:///./data/honeypot.db"
    
    # Compliance
    SANDBOX_MODE: bool = True
    ANONYMIZE_LOGS: bool = True
    SYNTHETIC_DATA_ONLY: bool = True
    
    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"
        case_sensitive = True


@lru_cache()
def get_settings() -> Settings:
    return Settings()


settings = get_settings()