import { describe, expect, it } from "vitest";
import { cartValidationsGenerateRun as run } from "../src/cart_validations_generate_run.js";

const line = (amount, qty = 1, fee = false) => ({
  quantity: qty,
  cost: { amountPerQuantity: { amount: String(amount) } },
  merchandise: { __typename: "ProductVariant", requiresShipping: true, product: { isFee: fee } },
});
const input = (o = {}) => ({
  buyerJourney: { step: "CHECKOUT_COMPLETION" },
  cart: { selection: o.sel === undefined ? null : { value: o.sel }, lines: o.lines ?? [line("19.99", 2)] },
  shop: { localTime: { date: o.today ?? "2026-11-05" } },
  validation: { metafield: o.config === undefined ? { jsonValue: { requireScheduling: true } } : o.config },
});
const sel = (o = {}) => JSON.stringify({ t: "tok_aaaaaaaaaaaaaaaa", m: "delivery", l: "kit", d: "2026-11-07", s: "10:00-13:00", f: 0, ...o });
const msgs = (r) => r.operations.flatMap((op) => op.validationAdd.errors.map((e) => e.message));

describe("checkout guard", () => {
  it("never blocks while adding to cart", () => {
    expect(run({ ...input(), buyerJourney: { step: "CART_INTERACTION" } }).operations).toEqual([]);
  });
  it("blocks a missing time when required", () => {
    expect(msgs(run(input()))[0]).toMatch(/choose a delivery or pickup time/);
  });
  it("allows a missing time when not required", () => {
    expect(run(input({ config: { jsonValue: { requireScheduling: false } } })).operations).toEqual([]);
  });
  it("defaults to required when the metafield is missing", () => {
    expect(msgs(run(input({ config: null }))).length).toBe(1);
  });
  it("passes a valid selection with no fee", () => {
    expect(run(input({ sel: sel() })).operations).toEqual([]);
  });
  it("blocks a past date", () => {
    expect(msgs(run(input({ sel: sel({ d: "2026-11-04" }) })))[0]).toMatch(/passed/);
  });
  it("checks the fee line against the quote", () => {
    const ok = input({ sel: sel({ f: 1299 }), lines: [line("19.99"), line("12.99", 1, true)] });
    expect(run(ok).operations).toEqual([]);
    const tampered = input({ sel: sel({ f: 0 }), lines: [line("19.99"), line("12.99", 1, true)] });
    expect(msgs(run(tampered))[0]).toMatch(/fee doesn't match/);
    const removed = input({ sel: sel({ f: 1299 }), lines: [line("19.99")] });
    expect(msgs(run(removed))[0]).toMatch(/fee doesn't match/);
  });
  it("blocks a fee without a selection", () => {
    const r = run(input({ config: { jsonValue: { requireScheduling: false } }, lines: [line("5"), line("7.99", 1, true)] }));
    expect(msgs(r)[0]).toMatch(/no delivery time/);
  });
  it("treats malformed JSON as missing", () => {
    expect(msgs(run(input({ sel: "{oops" })))[0]).toMatch(/choose a delivery/);
  });
});