from fooder.context import Context
from fooder.controller.preset import PresetController
from fooder.domain import Meal, Preset, PresetEntry


async def save_meal_as_preset(
    ctx: Context, meal: Meal, name: str | None = None
) -> Preset:
    await ctx.repo.meal.session.refresh(meal)
    ctrl = await PresetController.create(ctx, name=name or meal.name)
    for entry in meal.entries:
        preset_entry = PresetEntry(
            grams=entry.grams,
            product_id=entry.product_id,
            preset_id=ctrl.obj.id,
        )
        await ctx.repo.preset_entry.create(preset_entry)
    await ctx.repo.preset.session.refresh(ctrl.obj)
    return ctrl.obj