/**
 * MPO-23 / 10 B.3 item 3: a consumer `getTheme` that returns something CSS
 * cannot resolve must fail at BUILD, not at paint.
 *
 * Two halves, and both are the acceptance criterion: a deliberate violation in
 * a fixture fails, and the mpo tree's own defaults pass. A check that only
 * does the first is a check nobody can keep.
 */
import { describe, expect, it, vi } from "vitest";

vi.mock("tamagui", () => ({
  createTamagui: vi.fn((config: Record<string, unknown>) => config),
}));
// The reanimated driver imports react-native, which has no Node build.
vi.mock("./animations/index", () => ({ animations: {} }));

import { createDefaultThemeConfig } from "./createDefaultThemeConfig";
import { isResolvableThemeValue } from "./themeValue";

describe("isResolvableThemeValue", () => {
  it.each([
    ["$color5", "token reference"],
    ["#fff", "3-digit hex"],
    ["#ff00aa", "6-digit hex"],
    ["#ff00aa80", "8-digit hex"],
    ["rgba(0, 0, 0, 0.5)", "rgba()"],
    ["hsla(210, 50%, 40%, 0.2)", "hsla()"],
    ["oklch(0.7 0.1 200)", "oklch()"],
    ["color-mix(in srgb, red 50%, blue)", "color-mix()"],
    ["var(--fb-wall)", "var()"],
    ["transparent", "keyword"],
    ["currentColor", "keyword"],
    ["rebeccapurple", "named colour"],
    [0.5, "number"],
  ])("accepts %s (%s)", (value, _kind) => {
    expect(isResolvableThemeValue(value)).toBe(true);
  });

  it.each([
    ["", "empty string"],
    ["   ", "whitespace"],
    ["undefined", "the literal string undefined"],
    ["vaR(--x)", "a misspelled function"],
    ["reddish", "a word that is not a colour"],
    ["bakcground", "a typo"],
    ["$", "a bare dollar"],
    [{}, "an object"],
  ])("rejects %s (%s)", (value, _kind) => {
    expect(isResolvableThemeValue(value)).toBe(false);
  });

  it("does not accept an arbitrary bare word — the typo case is the whole point", () => {
    // A `/^[a-z]+$/` shortcut would pass all three of these.
    expect(isResolvableThemeValue("backgroundd")).toBe(false);
    expect(isResolvableThemeValue("greeen")).toBe(false);
    expect(isResolvableThemeValue("green")).toBe(true);
  });
});

describe("composeGetTheme validates at build (10 B.3 item 3)", () => {
  it("throws on a deliberate fixture violation, naming theme, key and value", () => {
    expect(() =>
      createDefaultThemeConfig({
        builderOptions: { getTheme: () => ({ borderColor: "vaR(--x)" }) },
      }),
    ).toThrow(/unresolvable value for "borderColor".*vaR\(--x\)/s);
  });

  it("throws on the literal string 'undefined', which nullish-dropping lets through", () => {
    expect(() =>
      createDefaultThemeConfig({
        builderOptions: { getTheme: () => ({ backgroundPress: "undefined" }) },
      }),
    ).toThrow(/unresolvable value for "backgroundPress"/);
  });

  it("still drops nullish rather than failing on it (DF-03 is unchanged)", () => {
    expect(() =>
      createDefaultThemeConfig({
        builderOptions: {
          getTheme: () => ({ borderColor: undefined, outlineColor: undefined }),
        },
      }),
    ).not.toThrow();
  });

  it("passes on a real consumer override", () => {
    expect(() =>
      createDefaultThemeConfig({
        builderOptions: { getTheme: () => ({ borderColor: "#ff00aa" }) },
      }),
    ).not.toThrow();
  });

  it("passes on the mpo tree's own defaults, with no consumer getTheme", () => {
    expect(() => createDefaultThemeConfig()).not.toThrow();
  });
});