/**
 * 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,
    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');

  // 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');
  await press('Enter');
  await sleep(200);
  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');
  await sleep(200);
  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();
  await sleep(200);
  check(
    'undo takes that rename back',
    (await object('o2')).name === 'Renamed crate',
    JSON.stringify((await object('o2')).name),
  );

  // 2e. Scrub the X field (right of the "X" label) by 100 px.
  const xLabel = await locate('X');
  await drag(xLabel.x + 160, xLabel.y, xLabel.x + 260, xLabel.y);
  const xNow = (await object('o2')).position.x;
  check('scrubbing X moved the object', xNow > 120, `x=${xNow}`);
  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()');
  await click(xLabel.x + 160, xLabel.y); // plain click → text editing with everything selected
  await typeText('300');
  await click(center.x, center.y + 250);
  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.
  await drag(center.x - 150, center.y, center.x - 50, 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(center.x, center.y + 200); // 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');
  await sleep(200);
  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 = ''");
}