from __future__ import annotations

from functools import lru_cache
from typing import List

from pydantic import Field, field_validator
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    project_name: str = "Resume Branches API"
    api_prefix: str = "/api/v1"
    environment: str = Field(default="local", alias="ENVIRONMENT")
    database_url: str = Field(
        default="postgresql+asyncpg://postgres:postgres@localhost:5432/resume_branches",
        alias="DATABASE_URL",
    )
    cors_origins: List[str] = Field(
        default_factory=lambda: ["http://localhost:3000"], alias="CORS_ORIGINS"
    )

    storage_bucket: str = Field(default="resume-branches", alias="MINIO_BUCKET")
    storage_region: str = Field(default="us-east-1", alias="MINIO_REGION")
    storage_endpoint_url: str | None = Field(
        default="http://localhost:9900", alias="MINIO_ENDPOINT"
    )
    storage_access_key: str | None = Field(default=None, alias="MINIO_ROOT_USER")
    storage_secret_key: str | None = Field(default=None, alias="MINIO_ROOT_PASSWORD")
    storage_path_prefix: str = Field(default="artifacts/cv")

    auth_oidc_issuer: str | None = Field(default=None, alias="AUTH_OIDC_ISSUER")
    auth_oidc_audience: str | None = Field(default=None, alias="AUTH_OIDC_AUDIENCE")
    auth_disable_verification: bool = Field(
        default=True, alias="AUTH_DISABLE_VERIFICATION"
    )

    celery_broker_url: str = Field(
        default="redis://localhost:6379/0", alias="CELERY_BROKER_URL"
    )
    celery_result_backend: str | None = Field(
        default=None, alias="CELERY_RESULT_BACKEND"
    )

    public_base_url: str = Field(
        default="https://cv.alves.world", alias="PUBLIC_BASE_URL"
    )
    publish_domain: str = Field(default="cv.alves.world", alias="CV_PUBLIC_DOMAIN")

    class Config:
        env_file = ".env"
        extra = "ignore"

    @field_validator("cors_origins", mode="before")
    @classmethod
    def _split_origins(cls, value):
        if isinstance(value, str):
            return [origin.strip() for origin in value.split(",") if origin.strip()]
        return value


@lru_cache(maxsize=1)
def get_settings() -> Settings:
    return Settings()  # type: ignore[arg-type]