from __future__ import annotations

from pathlib import Path

from pydantic import Field, field_validator
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """Runtime configuration for the wallet daemon service."""

    app_name: str = Field(default="AITBC Wallet Daemon")
    debug: bool = Field(default=False)

    coordinator_base_url: str = Field(default="http://localhost:8011", alias="COORDINATOR_BASE_URL")
    coordinator_api_key: str = Field(..., alias="COORDINATOR_API_KEY")

    rest_prefix: str = Field(default="/v1", alias="REST_PREFIX")
    ledger_db_path: Path = Field(default=Path("./data/wallet_ledger.db"), alias="LEDGER_DB_PATH")

    @field_validator('coordinator_api_key')
    @classmethod
    def validate_api_key(cls, v: str) -> str:
        if v.startswith('$') or not v or v == 'your_api_key_here':
            raise ValueError('COORDINATOR_API_KEY must be set to a valid value and cannot be a template placeholder')
        return v

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


settings = Settings()