from functools import lru_cache
from pathlib import Path
from pydantic import Field
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    qdrant_url: str = Field(default="http://localhost:6333", alias="QDRANT_URL")
    qdrant_api_key: str | None = Field(default=None, alias="QDRANT_API_KEY")
    asset_root: Path = Field(default=Path("../data/assets"), alias="AFTERIMAGE_ASSET_ROOT")
    manifest_path: Path = Field(default=Path("../data/manifest.json"), alias="AFTERIMAGE_MANIFEST")
    allow_fake_embeddings: bool = Field(default=False, alias="AFTERIMAGE_ALLOW_FAKE_EMBEDDINGS")
    cors_origins: str = Field(default="http://localhost:5173", alias="AFTERIMAGE_CORS_ORIGINS")
    collection_name: str = "object_memory"
    vector_size: int = 512
    model_name: str = "Qdrant/clip-ViT-B-32-vision"
    text_model_name: str = "Qdrant/clip-ViT-B-32-text"

    model_config = SettingsConfigDict(env_file=".env", extra="ignore")

    @property
    def cors_origin_list(self) -> list[str]:
        return [origin.strip() for origin in self.cors_origins.split(",") if origin.strip()]

    @property
    def resolved_asset_root(self) -> Path:
        return self.asset_root.expanduser().resolve()

    @property
    def resolved_manifest_path(self) -> Path:
        return self.manifest_path.expanduser().resolve()


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