"""Feature plans remain versioned inputs to the shared template research path."""

from fastapi import HTTPException

from .assets import Assets
from .workspace_contracts import AssetWrite


class Features:
    def __init__(self, db):
        self.assets = Assets(db)

    async def to_template(self, asset_id, version):
        feature = await self.assets.get(asset_id, version, "feature")
        if not feature["content"].get("template"):
            raise HTTPException(422, "特征方案尚未定义输出模板")
        return await self.assets.save(
            AssetWrite(kind="template", content=feature["content"]["template"]),
            provenance={"feature": feature},
        )