from __future__ import annotations
from typing import Literal
from pydantic import BaseModel


class RouteResponse(BaseModel):
    sectors: list[str]
    lens: list[str]
    type: list[str]


class BindResponse(BaseModel):
    indicator_id: str
    variables: list[str]
    measurable: Literal["MEASURABLE", "PROXY", "NOT_MEASURABLE"]
    reasons: str
    result_ids: list[str] = []


class PickVarsResponse(BaseModel):
    candidate_variables: list[str]  # 1–2 Kobo variable names; empty if no match found