/**
 * Selecting, renaming and scrubbing in the inspector, dragging in the viewport, autosave to
 * the server, and undo/redo of all of it.
 */
export async function inspector(t) {
  const {
    check,
    sleep,
    json,
    locate,
    shot,
    click,
    mouse,
    evaluate,
    settle,
    doubleClick,
    clickText,
    drag,
    press,
    typeText,
    mutate,
    undo,
    redo,
    state,
    object,
    api,
    sceneOf,
    projectId,
  } = t;

  // 2a. Select the blue crate in the hierarchy.
  await clickText('Blue crate');
  let s = await state();
  check(
    'hierarchy click selects object',
    s.selection?.kind === 'object' && s.selection.objectId === 'o2',
    JSON.stringify(s.selection),
  );
  await shot('02-object-selected');

  // 2a-ii. Groups with a band as their head (#290). The band runs from edge to edge of the panel in
  //        the header colour, the rows under it stand on the panel's own; the switches have a group.
  const section = (title) => json(`__gm.section(${JSON.stringify(title)})`);
  const panel = await json(`__gm.inspectorRect()`);
  let transform = await section('TRANSFORM');
  const switches = await section('SWITCHES');
  const position = await section('POSITION');
  const enabledRow = await json(`__gm.inspectorField('Enabled')`);
  const colors = transform
    ? await json(
        `[__gm.pixelAt(${Math.round(transform.rect.x + 3)}, ${Math.round(transform.y)}),` +
          ` __gm.pixelAt(${Math.round(transform.rect.x + transform.rect.w - 6)}, ${Math.round(transform.y)}),` +
          ` __gm.pixelAt(${Math.round(transform.rect.x + 3)}, ${Math.round(transform.rect.y + transform.rect.h + 12)}),` +
          ` __gm.themeColor('panelHeader'), __gm.themeColor('panel')]`,
      )
    : [];
  check(
    'a group head is a band from edge to edge, in a colour the rows under it do not have',
    transform &&
      transform.rect.x === panel.x &&
      panel.w - transform.rect.w <= 4 &&
      colors[0] === colors[3] &&
      colors[1] === colors[3] &&
      colors[2] === colors[4] &&
      colors[3] !== colors[4],
    JSON.stringify({ panel, rect: transform?.rect, colors }),
  );
  check(
    'the switches of an object stand in a group of their own, above its position',
    switches && position && enabledRow && switches.y < enabledRow.y && enabledRow.y < position.y,
    JSON.stringify({ switches: switches?.y, enabled: enabledRow?.y, position: position?.y }),
  );
  // A click on the band folds the group: its rows go, and the next band moves up against it.
  const folds = () => json(`localStorage.getItem('game-maker.folded-sections')`);
  await click(transform.x, transform.y);
  await settle();
  transform = await section('TRANSFORM');
  let offset = await section('EDITOR OFFSET (SCENE VIEW ONLY)');
  const folded = {
    collapsed: transform.collapsed,
    rotation: await json(`__gm.inspectorField('Rotation')`),
    gap: offset.rect.y - (transform.rect.y + transform.rect.h),
    stored: await folds(),
  };
  await shot('02-section-folded');
  // Folded once, the group is folded on the next object too.
  await evaluate(
    `__gm.state.select({ kind: 'object', holderId: 'scene1', objectId: 'o1', objectIds: ['o1'] })`,
  );
  await settle();
  const onNext = (await section('TRANSFORM'))?.collapsed;
  await clickText('Blue crate');
  transform = await section('TRANSFORM');
  await click(transform.x, transform.y);
  await settle();
  transform = await section('TRANSFORM');
  offset = await section('EDITOR OFFSET (SCENE VIEW ONLY)');
  const rotationBack = await json(`__gm.inspectorField('Rotation')`);
  check(
    'a click on a band folds its group away, for every object, and another click brings it back',
    folded.collapsed === true &&
      folded.rotation === null &&
      folded.gap === -1 &&
      String(folded.stored).includes('inspector:TRANSFORM') &&
      onNext === true &&
      transform.collapsed === false &&
      rotationBack !== null &&
      offset.rect.y > rotationBack.y &&
      !String(await folds()).includes('inspector:TRANSFORM'),
    JSON.stringify({
      folded,
      onNext: onNext ?? null,
      open: transform.collapsed,
      rotationBack,
      stored: await folds(),
    }),
  );

  // 2b. Deviations are shown in gold – on the inspector label and on the hierarchy row. The blue
  //     crate overrides width and color, the camera and the red crate's subtree nothing.
  const GOLD = '#f2c84b';
  const PLAIN = '#e6e8ee';
  const rowColor = (id) => json(`__gm.hierarchyRowColor('${id}')`);
  check('an overridden object is marked gold in the hierarchy', (await rowColor('o2')) === GOLD);
  check('an untouched object is not', (await rowColor('o3')) === PLAIN, await rowColor('o3'));
  check('nor is a parent whose subtree is untouched', (await rowColor('o1')) === PLAIN);
  check(
    'the overridden field is gold, an inherited one is not',
    (await json(`__gm.textColor('Width')`)) === GOLD &&
      (await json(`__gm.textColor('Height')`)) === '#8a90a0',
    JSON.stringify(await json(`[__gm.textColor('Width'), __gm.textColor('Height')]`)),
  );
  // The mark also travels up: with the crate's own overrides taken away the row must stay gold
  // for the sake of its collider child, which keeps one. Put back right after, byte for byte.
  await mutate(`__gm.state.activeScene.objects.find(o => o.id === 'o2').overrides = {}`);
  check('a parent carries the mark of a deviating child', (await rowColor('o2')) === GOLD);
  await mutate(
    `__gm.state.activeScene.objects.find(o => o.id === 'o2').overrides = { width: 140, color: 0x4488ff }`,
  );

  // 2c. Rename via inspector: the name field sits right of the "Name" label.
  const nameLabel = await locate('Name');
  await click(nameLabel.x + 160, nameLabel.y);
  await press('a', { ctrl: true });
  await typeText('Renamed crate');
  await shot('03-typing');
  // The focus border runs all the way round, not only through the rounded corners: the field's
  // clip once took in its own border and cut the straight edges away.
  const field = await json(`__gm.focusedRect()`);
  const edges = field
    ? await json(
        `[[${field.x + field.w / 2}, ${field.y}], [${field.x + field.w / 2}, ${field.y + field.h - 1}],` +
          ` [${field.x}, ${field.y + field.h / 2}], [${field.x + field.w - 1}, ${field.y + field.h / 2}]]` +
          `.map(([x, y]) => __gm.pixelAt(Math.round(x), Math.round(y)))`,
      )
    : [];
  check(
    'the focused field is outlined along all four edges',
    edges.length === 4 && edges.every((c) => c === '#4c8dff'),
    JSON.stringify({ field, edges }),
  );
  await press('Enter');
  check(
    'typing + Enter renamed the object',
    (await object('o2')).name === 'Renamed crate',
    JSON.stringify((await object('o2')).name),
  );
  await shot('04-renamed');

  // 2d. A double-click into a text field selects its content, so the next keystroke replaces the
  //     whole name instead of inserting into it. Renamed back, since later checks go by the name.
  await doubleClick(nameLabel.x + 160, nameLabel.y);
  await typeText('Twice');
  await press('Enter');
  check(
    'double-clicking a text field selects all – typing replaces the name',
    (await object('o2')).name === 'Twice',
    JSON.stringify((await object('o2')).name),
  );
  // Undone rather than typed back: check 2h further down counts its undos, so this must not
  // leave a step on the stack.
  await undo();
  check(
    'undo takes that rename back',
    (await object('o2')).name === 'Renamed crate',
    JSON.stringify((await object('o2')).name),
  );

  // 2d-ii. A drag from right to left selects the whole name (#236). The hidden input reported its
  //     range ordered, and its selectionchange echo made the caret the anchor after the first move.
  await click(nameLabel.x + 160, nameLabel.y);
  const nameField = await json('__gm.focusedRect()');
  await press('Escape');
  const midY = nameField.y + nameField.h / 2;
  await drag(nameField.x + nameField.w - 4, midY, nameField.x + 3, midY);
  const backward = await json(
    '({ start: document.activeElement?.selectionStart, end: document.activeElement?.selectionEnd,' +
      ' direction: document.activeElement?.selectionDirection })',
  );
  await press('Escape');
  check(
    'dragging from right to left selects the whole name',
    backward.start === 0 && backward.end === 'Renamed crate'.length && backward.direction === 'backward',
    JSON.stringify(backward),
  );

  // 2e. Scrub the X field (right of the "X" label) by 100 px. The model follows every move, the
  //     editor hears of it once per frame at most (#274): counted while the button is still held.
  const xLabel = await locate('X');
  await evaluate(`(() => {
    const seen = (window.__scrub02 = { events: 0, frames: 0, done: false });
    seen.stop = __gm.state.on('project', () => (seen.events += 1));
    const frame = () => { if (seen.done) return; seen.frames += 1; requestAnimationFrame(frame); };
    requestAnimationFrame(frame);
  })()`);
  await mouse('mouseMoved', xLabel.x + 160, xLabel.y);
  await mouse('mousePressed', xLabel.x + 160, xLabel.y);
  for (let i = 1; i <= 25; i++) {
    await mouse('mouseMoved', xLabel.x + 160 + i * 4, xLabel.y, 'left', { buttons: 1 });
    await sleep(8);
  }
  await settle();
  const held = await json(
    '(() => { const s = window.__scrub02; s.done = true; s.stop(); return { events: s.events, frames: s.frames }; })()',
  );
  const xHeld = (await object('o2')).position.x;
  await mouse('mouseReleased', xLabel.x + 260, xLabel.y);
  await settle();
  const xNow = (await object('o2')).position.x;
  check('scrubbing X moved the object', xNow > 120, `x=${xNow}`);
  check(
    'a held scrub writes every move and previews once per frame at most',
    xHeld === 220 && xNow === 220 && held.events >= 1 && held.events <= held.frames,
    JSON.stringify({ xHeld, xNow, ...held }),
  );
  await shot('05-scrubbed');

  // 2f. Type into X, then click straight into the empty viewport: the typed value must be
  //     committed (not reverted) even though the click deselects and rebuilds the inspector.
  const center = await json('__gm.viewportCenter()');
  // Searched, not guessed: with the console panel below, a fixed offset from the centre can
  // land on an object instead of empty space.
  const emptySpot = await json('__gm.emptySpot()');
  await click(xLabel.x + 160, xLabel.y); // plain click → text editing with everything selected
  await typeText('300');
  await click(emptySpot.x, emptySpot.y);
  const xTyped = (await object('o2')).position.x;
  s = await state();
  check(
    'typed X survives clicking into the viewport',
    xTyped === 300 && s.selection === null,
    `x=${xTyped} selection=${JSON.stringify(s.selection)}`,
  );

  // 2g. Drag the red crate in the viewport. It is at world (-150,0); the view is centred
  //    on the origin, so compute its screen position from the viewport centre. Pressed right of
  //    its middle: the crate wears a collider, whose icon stands on the middle.
  await drag(center.x - 120, center.y, center.x - 20, center.y - 70);
  const o1Now = (await object('o1')).position;
  check('viewport drag moved the red crate', o1Now.x > -150, JSON.stringify(o1Now));
  await shot('06-dragged');

  await sleep(1800);
  const saved = await api(`projects/${projectId}`);
  const renamed = sceneOf(saved).objects.find((o) => o.id === 'o2');
  check('rename persisted', renamed.name === 'Renamed crate', renamed.name);
  check('scrub persisted', renamed.position.x > 120, JSON.stringify(renamed.position));
  check('override kept', renamed.overrides.color === 4491519, JSON.stringify(renamed.overrides));
  check('save status is saved', (await state()).save === 'saved');

  // 2h. Undo four times (drag, typed X, scrub, rename) with Ctrl+Z, then redo once.
  await click(emptySpot.x, emptySpot.y); // click empty viewport → deselect, drop focus
  for (let i = 0; i < 4; i++) await undo();
  const afterUndo = (await t.objects()).map((o) => ({ id: o.id, name: o.name, x: o.position.x }));
  check(
    'undo reverted drag, typed X, scrub and rename',
    afterUndo[0].x === -150 && afterUndo[1].x === 120 && afterUndo[1].name === 'Blue crate',
    JSON.stringify(afterUndo),
  );
  await redo();
  check('redo restored the rename', (await object('o2')).name === 'Renamed crate');
  await shot('07-undo-redo');

  // 2i. A change to the *structure* of what is shown normally rebuilds the inspector, which
  //    destroys the widget being typed in. While a field in here has focus the rebuild has to
  //    wait – otherwise a field whose value decides the structure cannot be typed into at all.
  await clickText('Renamed crate');
  const xRow = await locate('X');
  await click(xRow.x + 160, xRow.y);
  // The value it already has: Escape cancels the widget but not the preview it wrote, so
  // typing anything else here would leave that value behind for the later steps.
  await typeText('120');
  const before = await json('__gm.inspectorInfo()');
  // The parent is part of the object's structure signature, so this asks for a rebuild.
  await mutate("__gm.state.activeScene.objects.find(o => o.id === 'o2').parentId = 'o1'");
  const during = await json('__gm.inspectorInfo()');
  const stillTyping = await json(
    '({ tag: document.activeElement?.tagName, value: document.activeElement?.value })',
  );
  check(
    'a structure change while typing does not rebuild the inspector',
    during.rebuilds === before.rebuilds && during.postponed,
    JSON.stringify(during),
  );
  check(
    'the field being typed in survives it',
    stillTyping.tag === 'INPUT' && stillTyping.value === '120',
    JSON.stringify(stillTyping),
  );
  await press('Escape');
  const after = await json('__gm.inspectorInfo()');
  check(
    'leaving the field runs the postponed rebuild',
    after.rebuilds === before.rebuilds + 1 && !after.postponed,
    JSON.stringify(after),
  );
  await mutate("__gm.state.activeScene.objects.find(o => o.id === 'o2').parentId = ''");
}