from dataclasses import dataclass, field
import os

@dataclass(frozen=True)
class Settings:
    database_url: str = os.getenv(
        "RAG_DATABASE_URL",
        "postgresql://courtrix:courtrix@localhost:5432/courtrix?sslmode=disable",
    )
    gemini_api_key: str = os.getenv("GEMINI_API_KEY", "AIzaSyDdD78KJBTOLCwpG3J7lDUnNwNR5vyqbBI")
    gemini_chat_model: str = os.getenv("GEMINI_CHAT_MODEL", "gemini-2.5-flash")
    gemini_embedding_model: str = os.getenv(
        "GEMINI_EMBEDDING_MODEL",
        "gemini-embedding-001",
    )
    groq_api_key: str = os.getenv("GROQ_API_KEY","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")
    HUGGINGFACE_API_TOKEN: str = os.getenv("HUGGINGFACE_API_TOKEN","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")
    minio_endpoint: str = os.getenv("MINIO_ENDPOINT", "localhost")
    minio_port: int = int(os.getenv("MINIO_PORT", "9000"))
    minio_use_ssl: bool = os.getenv("MINIO_USE_SSL", "false").lower() == "true"
    minio_access_key: str = os.getenv("MINIO_ACCESS_KEY", "courtrixminio")
    minio_secret_key: str = os.getenv("MINIO_SECRET_KEY", "courtrixminiosecret")
    service_secret: str = os.getenv("RAG_SERVICE_SECRET", "courtrix-rag-secret")
    default_top_k: int = int(os.getenv("RAG_TOP_K", "5"))
    chunk_size: int = int(os.getenv("RAG_CHUNK_SIZE", "1200"))
    chunk_overlap: int = int(os.getenv("RAG_CHUNK_OVERLAP", "200"))
    
    # Fallback configuration
    openrouter_api_key: str = os.getenv("OPENROUTER_API_KEY", "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")
    xai_api_key: str = os.getenv("XAI_API_KEY", "")
    
    google_fallback_models: list[str] = field(default_factory=lambda: [
        "gemini-2.5-flash",
        "gemini-1.5-pro",
        "gemini-1.5-flash"
    ])
    openrouter_fallback_models: list[str] = field(default_factory=lambda: [
        "meta-llama/llama-3.3-70b-instruct:free"
    ])
    xai_fallback_models: list[str] = field(default_factory=lambda: [
        "grok-2-1212"
    ])


settings = Settings()