// Module 7: Resolving rules. Each test matches a heading in scenarios.md.
import { expect, test } from "vitest";
import { newBaba, type Baba } from "../src/harness";

/** An empty level `width` wide and `height` high. */
const emptyLevel = (width: number, height: number) => ({ width, height, objects: [] });

/** Place one text object per word: `[word, x, y]`. */
function write(b: Baba, words: [string, number, number][]): void {
  for (const [word, x, y] of words) b.place(`text:${word}`, x, y);
}

test("test_07_not_overrides", () => {
  const b = newBaba(emptyLevel(4, 5));
  write(b, [
    ["BABA", 0, 0],
    ["IS", 1, 0],
    ["YOU", 2, 0],
  ]);
  const baba = b.place("baba", 0, 4);

  expect(b.hasProperty(baba, "YOU")).toBe(true);

  write(b, [
    ["BABA", 0, 2],
    ["IS", 1, 2],
    ["NOT", 2, 2],
    ["YOU", 3, 2],
  ]);

  expect(b.rules()).toEqual(["BABA IS NOT YOU", "BABA IS YOU", "TEXT IS PUSH"]);
  expect(b.activeRules()).toEqual(["BABA IS NOT YOU", "TEXT IS PUSH"]);
  expect(b.hasProperty(baba, "YOU")).toBe(false);
});

test("test_07_x_is_x_blocks_conversion", () => {
  const b = newBaba(emptyLevel(3, 5));
  write(b, [
    ["BABA", 0, 0],
    ["IS", 1, 0],
    ["BABA", 2, 0],
    ["BABA", 0, 2],
    ["IS", 1, 2],
    ["ROCK", 2, 2],
    ["ROCK", 0, 4],
    ["IS", 1, 4],
    ["BABA", 2, 4],
  ]);

  expect(b.rules()).toEqual(["BABA IS BABA", "BABA IS ROCK", "ROCK IS BABA", "TEXT IS PUSH"]);
  expect(b.activeRules()).toEqual(["BABA IS BABA", "ROCK IS BABA", "TEXT IS PUSH"]);
});

test("test_07_x_is_not_x_deletes_and_unlocks", () => {
  const b = newBaba(emptyLevel(4, 5));
  write(b, [
    ["BABA", 0, 0],
    ["IS", 1, 0],
    ["NOT", 2, 0],
    ["BABA", 3, 0],
    ["BABA", 0, 2],
    ["IS", 1, 2],
    ["BABA", 2, 2],
    ["BABA", 0, 4],
    ["IS", 1, 4],
    ["ROCK", 2, 4],
  ]);

  expect(b.rules()).toEqual(["BABA IS BABA", "BABA IS NOT BABA", "BABA IS ROCK", "TEXT IS PUSH"]);
  expect(b.activeRules()).toContain("BABA IS ROCK");
  expect(b.activeRules()).not.toContain("BABA IS BABA");
});

test("test_07_text_is_not_push", () => {
  const b = newBaba(emptyLevel(4, 3));
  const rockText = b.place("text:ROCK", 0, 2);
  const rock = b.place("rock", 3, 2);

  expect(b.activeRules()).toEqual(["TEXT IS PUSH"]);
  expect(b.hasProperty(rockText, "PUSH")).toBe(true);
  expect(b.hasProperty(rock, "PUSH")).toBe(false);

  const textText = b.place("text:TEXT", 0, 0);
  write(b, [
    ["IS", 1, 0],
    ["NOT", 2, 0],
    ["PUSH", 3, 0],
  ]);

  expect(b.rules()).toEqual(["TEXT IS NOT PUSH", "TEXT IS PUSH"]);
  expect(b.activeRules()).toEqual(["TEXT IS NOT PUSH"]);
  expect(b.hasProperty(rockText, "PUSH")).toBe(false);
  expect(b.hasProperty(textText, "PUSH")).toBe(false);
});

test("test_07_leading_not_breaks_sentence", () => {
  const b = newBaba(emptyLevel(4, 2));
  write(b, [
    ["NOT", 0, 0],
    ["BABA", 1, 0],
    ["IS", 2, 0],
    ["YOU", 3, 0],
  ]);
  const baba = b.place("baba", 0, 1);

  expect(b.rules()).toEqual(["TEXT IS PUSH"]);
  expect(b.activeRules()).toEqual(["TEXT IS PUSH"]);
  expect(b.hasProperty(baba, "YOU")).toBe(false);
});