/**
 * The ↔ / ↕ buttons beside a sprite's Width and Height: fit that side to the proportions of the
 * picture the sprite wears, set both sides to its pixel size, and not exist at all while it wears
 * no picture. With both on offer the button is the menu form "↔ ▾", which is what the checks
 * below distinguish.
 *
 * Runs on the sheet the texture steps imported (64 × 48) and adds a frame with a deliberately
 * different shape, which is what makes "sheet or frame?" a question the numbers can answer.
 */

/** The rows are read as numbers, so a float from a division needs a tolerance. */
const near = (value, expected) => Math.abs(value - expected) < 0.01;

const spriteProp = (key) => `__gm.state.project.assets.find((a) => a.id === 'tex-sprite').props.${key}`;

export async function aspect(t) {
  const { check, sleep, json, evaluate, shot, clickText, press, undo, mutate, select } = t;

  /** Whether the size button of a row is there at all, in either its plain or its menu form. */
  const sizeButton = async (glyph) =>
    (await json(`__gm.locate('${glyph}')`))
      ? 'plain'
      : (await json(`__gm.locate('${glyph} ▾')`))
        ? 'menu'
        : '';

  await press('Escape');
  await evaluate('document.activeElement instanceof HTMLElement && document.activeElement.blur()');
  const sheet = await json("(__gm.state.project.assets.find((a) => a.type === 'texture') ?? {}).id ?? ''");
  check('the imported sheet is still there', sheet !== '', sheet);

  // 26. A sprite wearing nothing has nothing to be proportional to, so the buttons are absent.
  //     Edited as an asset: one base value per row instead of an override, so the numbers below
  //     say what they mean.
  await mutate(`
    const props = __gm.state.project.assets.find((a) => a.id === 'tex-sprite').props;
    props.texture = '';
    props.width = 100;
    props.height = 100`);
  await select({ kind: 'asset', assetId: 'tex-sprite' });
  await sleep(600);
  check('the sprite asset is in the inspector', Boolean(await json("__gm.locate('Width')")));
  check('no texture, no aspect buttons', (await sizeButton('↔')) === '' && (await sizeButton('↕')) === '');
  await shot('40-aspect-without-a-texture');

  // 27. Wearing the 64 x 48 sheet, a 100 x 100 sprite is neither proportional nor at pixel size,
  //     so both rows offer two things and show the menu form.
  await mutate(`${spriteProp('texture')} = ${JSON.stringify(sheet)}`);
  await sleep(500);
  check(
    'a texture brings both buttons out, offering fit and pixel size',
    (await sizeButton('↔')) === 'menu' && (await sizeButton('↕')) === 'menu',
  );
  await shot('41-aspect-buttons');

  // 28. Fit moves the width only, to the sheet's ratio: 100 x 64/48.
  await clickText('↔ ▾');
  await sleep(400);
  await clickText('Fit to 64 × 48');
  await sleep(500);
  const fitted = { w: await json(spriteProp('width')), h: await json(spriteProp('height')) };
  check(
    '↔ sets the width from the height and the sheet ratio',
    near(fitted.w, (100 * 64) / 48) && fitted.h === 100,
    JSON.stringify(fitted),
  );
  check(
    'and the fit drops out of the menu once the sprite is proportional',
    (await sizeButton('↔')) === 'plain' && (await sizeButton('↕')) === 'plain',
  );
  await shot('42-aspect-fitted');

  // 28a. One command, so it is one undo step – and the menu form comes back with the old shape.
  await undo();
  await sleep(500);
  check('undo takes the width back', (await json(spriteProp('width'))) === 100);
  check('and the buttons return with it', (await sizeButton('↔')) === 'menu');
  await t.redo();
  await sleep(500);

  // 28b. What is left over is the pixel size, now a direct button: it writes *both* sides, and
  //      the whole button goes because there is nothing left to offer.
  await clickText('↔');
  await sleep(500);
  const pixels = { w: await json(spriteProp('width')), h: await json(spriteProp('height')) };
  check(
    'the pixel-size action sets both sides to the picture',
    pixels.w === 64 && pixels.h === 48,
    JSON.stringify(pixels),
  );
  check(
    'and nothing is left to offer, so no button is drawn',
    (await sizeButton('↔')) === '' && (await sizeButton('↕')) === '',
  );
  await undo();
  await sleep(500);
  check(
    'both sides come back in one undo step',
    near(await json(spriteProp('width')), (100 * 64) / 48) && (await json(spriteProp('height'))) === 100,
  );
  await t.redo();
  await sleep(500);

  // 29. A frame is the picture the sprite wears, not the sheet it was cut from: 40 x 10 against
  //     the sheet's 64 x 48, so the two ratios cannot be confused for one another.
  await mutate(`
    const asset = __gm.state.project.assets.find((a) => a.id === ${JSON.stringify(sheet)});
    asset.frames.push({ id: 'aspect-frame', name: 'Wide', x: 0, y: 0, w: 40, h: 10 });
    ${spriteProp('texture')} = 'aspect-frame'`);
  await sleep(500);
  check('a frame of another shape brings the buttons back', (await sizeButton('↕')) === 'menu');

  const before = await json(spriteProp('width'));
  await clickText('↕ ▾');
  await sleep(400);
  await clickText('Fit to 40 × 10');
  await sleep(500);
  const framed = { w: await json(spriteProp('width')), h: await json(spriteProp('height')) };
  check(
    '↕ sets the height from the frame ratio, not the sheet it belongs to',
    near(framed.h, (before * 10) / 40) && framed.w === before,
    JSON.stringify({ framed, sheetWouldGive: (before * 48) / 64 }),
  );
  check('and only the pixel size is left to offer', (await sizeButton('↕')) === 'plain');

  // 30. The same rows on a placed object write an override rather than the asset value.
  await mutate(`${spriteProp('texture')} = ${JSON.stringify(sheet)}`);
  await select({ kind: 'object', holderId: 'scene1', objectIds: ['otex'], objectId: 'otex' });
  await sleep(600);
  await mutate("__gm.state.activeScene.objects.find((o) => o.id === 'otex').overrides.height = 90");
  await sleep(400);
  check('the object row offers the fit as well', (await sizeButton('↔')) === 'menu');
  // The crowded case: an overridden, out-of-proportion row carries ↔ ▾ next to ↑ and ↺.
  check('and shows it beside the override buttons', (await json('__gm.textOverflows()')).length === 0);
  await shot('43-aspect-beside-the-override-buttons');
  await clickText('↔ ▾');
  await sleep(400);
  await clickText('Fit to 64 × 48');
  await sleep(500);
  const override = await json("__gm.state.activeScene.objects.find((o) => o.id === 'otex').overrides");
  check(
    'fitting a scene object writes an override, leaving the asset alone',
    near(override.width, (90 * 64) / 48) && near(await json(spriteProp('width')), framed.w),
    JSON.stringify({ override, asset: await json(spriteProp('width')) }),
  );
  await shot('44-aspect-on-an-object');

  // 30a. The pixel size on an object writes both overrides, and as one undo step.
  await clickText('↔');
  await sleep(500);
  const sized = await json("__gm.state.activeScene.objects.find((o) => o.id === 'otex').overrides");
  check(
    'the pixel size writes both overrides at once',
    sized.width === 64 && sized.height === 48,
    JSON.stringify(sized),
  );
  await undo();
  await sleep(500);
  const back = await json("__gm.state.activeScene.objects.find((o) => o.id === 'otex').overrides");
  check(
    'and one undo takes both back',
    near(back.width, (90 * 64) / 48) && back.height === 90,
    JSON.stringify(back),
  );
}