import { describe, expect, it } from 'vitest';
import { THE_ROYAL } from '../../src/scenes/floor/layouts/theRoyal';
import { isWalkable, tileAt, worldToTile } from '../../src/scenes/floor/venueMap';
import { assertLayout } from './layoutInvariants';

const map = THE_ROYAL.map;

const countTiles = (predicate: (kind: ReturnType<typeof tileAt>) => boolean): number => {
  let n = 0;
  for (let ty = 0; ty < map.height; ty++) {
    for (let tx = 0; tx < map.width; tx++) if (predicate(tileAt(map, tx, ty))) n++;
  }
  return n;
};

const propsOf = (kind: string) => THE_ROYAL.props.filter((p) => p.kind === kind);

describe('THE_ROYAL layout', () => {
  it('satisfies the shared venue invariants', () => {
    assertLayout(THE_ROYAL, { bar: 6, dance: 4, booth: 2, toilet: 2, smoke: 2, entry: 1, exit: 1 });
  });

  it('matches the venue id the ladder looks it up by', () => {
    // data/venues.ts finds a night's room by VenueDef.id — a typo here is a
    // venue that silently falls back to Voltage.
    expect(THE_ROYAL.id).toBe('theRoyal');
  });

  // ---- the horseshoe ---------------------------------------------------------
  it('wraps the public bar in counter on three sides with a workable pit inside', () => {
    expect(tileAt(map, 22, 17)).toBe('bar');   // north run
    expect(tileAt(map, 22, 25)).toBe('bar');   // south run
    expect(tileAt(map, 28, 21)).toBe('bar');   // the bend
    // The open west end is the whole point: the taps post lives in the pit, so
    // walling this in freezes the bar shift for the night.
    expect(isWalkable(map, 15, 21)).toBe(true);
    const taps = THE_ROYAL.posts.taps;
    expect(taps).toBeDefined();
    expect(tileAt(map, taps!.tx, taps!.ty)).toBe('floor');
  });

  // ---- the DJ corner ---------------------------------------------------------
  it('gives the DJ a folding table on the carpet, not a booth', () => {
    expect(countTiles((k) => k === 'djbooth' || k === 'djfloor')).toBe(0);
    const decks = THE_ROYAL.posts.decks;
    expect(decks).toBeDefined();
    expect(isWalkable(map, decks!.tx, decks!.ty)).toBe(true);
    for (const p of [...propsOf('deck'), ...propsOf('mixer'), ...propsOf('highTable')]) {
      if (p.tx < 50 || p.ty < 33) continue; // the pool-room leaner is not DJ gear
      expect(isWalkable(map, p.tx, p.ty), `'${p.id}' is not on plain floor`).toBe(true);
    }
  });

  // ---- the dunnies -----------------------------------------------------------
  it('has two cubicles, one of them plainly out of order', () => {
    expect(map.stalls).toHaveLength(2);
    expect(map.anchors.toilet).toHaveLength(2);
    for (const stall of map.stalls) {
      const inside = worldToTile(stall.inside.x, stall.inside.y);
      expect(tileAt(map, inside.tx, inside.ty)).toBe('stall');
    }
    // The story prop: a wet floor sign and a mop bucket parked at cubicle two.
    const wet = propsOf('wetFloor');
    expect(wet).toHaveLength(1);
    expect(propsOf('mopBucket')).toHaveLength(1);
    const secondDoor = worldToTile(map.stalls[1]!.door.x, map.stalls[1]!.door.y);
    expect(Math.abs(wet[0]!.tx - secondDoor.tx)).toBeLessThanOrEqual(2);
  });

  it('plumbs the dunnies with a trough and a single basin', () => {
    expect(propsOf('trough')).toHaveLength(1);
    expect(propsOf('sinkRow')).toHaveLength(1);
    // Both stand on 'sink' tiles, which are furniture: you cannot walk the trough.
    for (const p of [...propsOf('trough'), ...propsOf('sinkRow')]) {
      expect(tileAt(map, p.tx, p.ty), `'${p.id}' is not plumbed in`).toBe('sink');
    }
  });

  // ---- the beer garden -------------------------------------------------------
  it('opens the beer garden to the sky inside a fence, with one gate', () => {
    const yard = countTiles((k) => k === 'yard');
    expect(yard).toBeGreaterThan(200);
    // Every yard tile must sit inside the fence rectangle, or the rain falls in
    // the pub (the renderer keys the weather off 'yard', not off a room id).
    for (let ty = 0; ty < map.height; ty++) {
      for (let tx = 0; tx < map.width; tx++) {
        if (tileAt(map, tx, ty) !== 'yard') continue;
        expect(tx).toBeGreaterThan(12);
        expect(tx).toBeLessThan(45);
        expect(ty).toBeGreaterThan(33);
        expect(ty).toBeLessThan(43);
      }
    }
    expect(countTiles((k) => k === 'smokeDoor')).toBe(1);
    expect(tileAt(map, 29, 33)).toBe('smokeDoor');
    expect(tileAt(map, 29, 32)).toBe('floor');
    expect(tileAt(map, 29, 34)).toBe('yard');
    // It is the nicest room in the pub, so it is furnished like one.
    expect(propsOf('picnicTable').length).toBeGreaterThanOrEqual(4);
    expect(propsOf('beerUmbrella').length).toBeGreaterThanOrEqual(2);
    expect(propsOf('patioHeater')).toHaveLength(1);
    expect(propsOf('buttBin')).toHaveLength(1);
  });

  // ---- the rooms that are not the dance floor ---------------------------------
  it('keeps the dance floor smaller than the pool room it plays second fiddle to', () => {
    const dance = countTiles((k) => k === 'dance');
    expect(dance).toBeGreaterThan(0);
    // Voltage's floor is 375 tiles. This one is an afterthought bolted on in 2004.
    expect(dance).toBeLessThan(150);
    expect(propsOf('poolTable')).toHaveLength(2);
    expect(propsOf('cueRack')).toHaveLength(1);
    expect(propsOf('dartboard')).toHaveLength(1);
    expect(propsOf('pokie')).toHaveLength(6);
    expect(propsOf('tabBoard').length).toBeGreaterThanOrEqual(2);
    expect(propsOf('bistroTable').length).toBeGreaterThanOrEqual(4);
    expect(propsOf('bainMarie')).toHaveLength(1);
    expect(propsOf('raffleDrum')).toHaveLength(1);
    expect(propsOf('jukebox')).toHaveLength(1);
    expect(propsOf('discoball')).toHaveLength(1);
  });

  // ---- light signature -------------------------------------------------------
  it('lights the pub amber and spends its one signature colour on the pokies', () => {
    const AMBER = 0xd8a020;
    const POKIE_BLUE = 0x4aa0c0;
    const allowed = new Set([
      AMBER, POKIE_BLUE,
      0x30a050,  // pool-table cone
      0x50c060,  // dunnies fluoro
      0xd03470,  // dance + entry pink
      0x3060c0,  // DJ
      0x6080a0,  // beer garden
    ]);
    for (const l of THE_ROYAL.lights) {
      expect(allowed.has(l.colour), `light '${l.id}' invents a colour`).toBe(true);
    }
    expect(THE_ROYAL.lights.filter((l) => l.colour === AMBER).length).toBeGreaterThanOrEqual(6);
    expect(THE_ROYAL.lights.filter((l) => l.colour === POKIE_BLUE).length).toBeGreaterThanOrEqual(2);
    expect(THE_ROYAL.lights.filter((l) => l.colour === 0x30a050)).toHaveLength(2);

    // No pink anywhere but the dance corner and the way out (VENUES.md §2).
    for (const l of THE_ROYAL.lights) {
      if (l.colour !== 0xd03470) continue;
      const onDance = tileAt(map, l.tx, l.ty) === 'dance';
      expect(onDance || l.id === 'entry', `pink light '${l.id}' is loose in the pub`).toBe(true);
      if (onDance) expect(l.pulse).toBe('beat');
    }
  });

  it('lays pub carpet rather than club floor', () => {
    expect(THE_ROYAL.palette?.floor).toBeDefined();
    // Warm: more red than blue, which is the whole difference from Voltage.
    const floor = THE_ROYAL.palette!.floor!;
    expect((floor >> 16) & 0xff).toBeGreaterThan(floor & 0xff);
  });
});