import assert from "node:assert/strict";
import { Then, When } from "@cucumber/cucumber";
import { prisma } from "../../src/db/prisma.js";
import { slugify } from "../../src/utils/slugify.js";
import type { CustomWorld } from "../support/world.js";

/** Splits a comma-separated list of names from a `.feature` string into trimmed, non-empty parts. */
function splitNames(names: string): string[] {
  return names
    .split(",")
    .map((name) => name.trim())
    .filter(Boolean);
}

/**
 * Resolves allergen names (as written in a `.feature` file, e.g.
 * "Arachides") to their Allergy id — scenarios still name allergens by their
 * French label for readability, so this slugifies before matching against
 * `Category.key` (see reference.service.ts for why the key lives on
 * Category, not Allergy).
 */
async function allergyIdsFor(names: string[]): Promise<number[]> {
  const allergies = await prisma.allergy.findMany({ include: { category: true } });
  return names.map((name) => {
    const key = slugify(name);
    const match = allergies.find((allergy) => allergy.category.key === key);
    if (!match) throw new Error(`No seeded allergen named "${name}"`);
    return match.id;
  });
}

When("I set my regime to {string}", async function (this: CustomWorld, dietName: string) {
  const diet = await prisma.diet.findFirstOrThrow({ where: { key: slugify(dietName) } });
  this.response = await this.agent.patch("/profile/diet").send({ dietId: diet.id });
});

Then(
  "my profile's regime should be {string}",
  async function (this: CustomWorld, dietName: string) {
    const diet = await prisma.diet.findFirstOrThrow({ where: { key: slugify(dietName) } });
    assert.equal(this.response.body.dietId, diet.id);
  },
);

When("I set my allergens to {string}", async function (this: CustomWorld, names: string) {
  const allergyIds = await allergyIdsFor(splitNames(names));
  this.response = await this.agent.patch("/profile/allergies").send({ allergyIds });
});

Then("my selected allergens should be {string}", async function (this: CustomWorld, names: string) {
  const expected = (await allergyIdsFor(splitNames(names))).sort();
  const actual = [...this.response.body].sort();
  assert.deepEqual(actual, expected);
});