import { NextRequest, NextResponse } from "next/server";
import { db, recipes, recipeIngredients } from "@epicure/db";
import { eq, and, or, ne } from "@epicure/db";
import { requireSession } from "@/lib/api-auth";
import { estimateNutrition } from "@/lib/ai/features/estimate-nutrition";

type Params = { params: Promise<{ id: string }> };

export async function GET(_req: NextRequest, { params }: Params) {
  const { session, response } = await requireSession();
  if (response) return response;
  const { id } = await params;

  const recipe = await db.query.recipes.findFirst({
    where: and(
      eq(recipes.id, id),
      or(
        eq(recipes.authorId, session!.user.id),
        ne(recipes.visibility, "private")
      )
    ),
  });

  if (!recipe) return NextResponse.json({ error: "Not found" }, { status: 404 });

  return NextResponse.json({ nutrition: recipe.nutritionData ?? null });
}

export async function POST(_req: NextRequest, { params }: Params) {
  const { session, response } = await requireSession();
  if (response) return response;
  const { id } = await params;

  const recipe = await db.query.recipes.findFirst({
    where: and(
      eq(recipes.id, id),
      or(
        eq(recipes.authorId, session!.user.id),
        ne(recipes.visibility, "private")
      )
    ),
    with: {
      ingredients: { orderBy: (t, { asc }) => asc(t.order) },
    },
  });

  if (!recipe) return NextResponse.json({ error: "Not found" }, { status: 404 });

  const result = await estimateNutrition({
    title: recipe.title,
    baseServings: recipe.baseServings,
    ingredients: recipe.ingredients.map((i) => ({
      rawName: i.rawName,
      quantity: i.quantity,
      unit: i.unit,
    })),
  });

  await db.update(recipes).set({ nutritionData: result }).where(and(eq(recipes.id, id), eq(recipes.authorId, session!.user.id)));

  return NextResponse.json({ nutrition: result });
}